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二进制装置 Kubernetes（k8s）v1.21.13 IPv4/IPv6 双栈
Kubernetes 开源不易，帮忙点个 star，谢谢了🌹
介绍
kubernetes 二进制装置
后续尽可能第一工夫更新新版本文档
1.21.13 和 1.22.10 和 1.23.3 和 1.23.4 和 1.23.5 和 1.23.6 和 1.23.7 和 1.24.0 和 1.24.1 文档以及安装包已生成。
我应用 IPV6 的目标是在公网进行拜访，所以我配置了 IPV6 动态地址。
若您没有 IPV6 环境，或者不想应用 IPv6，不对主机进行配置 IPv6 地址即可。
不配置 IPV6，不影响后续，不过集群仍旧是反对 IPv6 的。为前期留有扩大可能性。
我的项目地址：https://github.com/cby-chen/K…
每个初始版本会打上 releases，安装包在 releases 页面
https://github.com/cby-chen/K…
（下载更快）我本人的网盘：https://pan.oiox.cn/s/PetV
1. 环境
| 主机名称 | IP 地址 | 阐明 | 软件 |
|---|---|---|---|
| Master01 | 10.0.0.81 | master 节点 | kube-apiserver、kube-controller-manager、kube-scheduler、etcd、 kubelet、kube-proxy、nfs-client、haproxy、keepalived |
| Master02 | 10.0.0.82 | master 节点 | kube-apiserver、kube-controller-manager、kube-scheduler、etcd、 kubelet、kube-proxy、nfs-client、haproxy、keepalived |
| Master03 | 10.0.0.83 | master 节点 | kube-apiserver、kube-controller-manager、kube-scheduler、etcd、 kubelet、kube-proxy、nfs-client、haproxy、keepalived |
| Node01 | 10.0.0.84 | node 节点 | kubelet、kube-proxy、nfs-client |
| Node02 | 10.0.0.85 | node 节点 | kubelet、kube-proxy、nfs-client |
| 10.0.0.89 | VIP |
| 软件 | 版本 |
|---|---|
| 内核 | 4.18.0-373.el8.x86_64 |
| CentOS 8 | v8 或者 v7 |
| kube-apiserver、kube-controller-manager、kube-scheduler、kubelet、kube-proxy | v1.21.13 |
| etcd | v3.5.4 |
| containerd | v1.6.6 |
| cfssl | v1.6.1 |
| cni | v1.1.1 |
| crictl | v1.23.0 |
| haproxy | v1.8.27 |
| keepalived | v2.1.5 |
网段
物理主机：192.168.1.0/24
service：10.96.0.0/12
pod：172.16.0.0/12
如果有条件倡议 k8s 集群与 etcd 集群离开装置
1.1.k8s 根底零碎环境配置
1.2. 配置 IP
ssh root@10.1.1.112 "nmcli con mod ens160 ipv4.addresses 10.0.0.81/8; nmcli con mod ens160 ipv4.gateway 10.0.0.1; nmcli con mod ens160 ipv4.method manual; nmcli con mod ens160 ipv4.dns"8.8.8.8"; nmcli con up ens160"
ssh root@10.1.1.102 "nmcli con mod ens160 ipv4.addresses 10.0.0.82/8; nmcli con mod ens160 ipv4.gateway 10.0.0.1; nmcli con mod ens160 ipv4.method manual; nmcli con mod ens160 ipv4.dns"8.8.8.8"; nmcli con up ens160"
ssh root@10.1.1.104 "nmcli con mod ens160 ipv4.addresses 10.0.0.83/8; nmcli con mod ens160 ipv4.gateway 10.0.0.1; nmcli con mod ens160 ipv4.method manual; nmcli con mod ens160 ipv4.dns"8.8.8.8"; nmcli con up ens160"
ssh root@10.1.1.105 "nmcli con mod ens160 ipv4.addresses 10.0.0.84/8; nmcli con mod ens160 ipv4.gateway 10.0.0.1; nmcli con mod ens160 ipv4.method manual; nmcli con mod ens160 ipv4.dns"8.8.8.8"; nmcli con up ens160"
ssh root@10.1.1.106 "nmcli con mod ens160 ipv4.addresses 10.0.0.85/8; nmcli con mod ens160 ipv4.gateway 10.0.0.1; nmcli con mod ens160 ipv4.method manual; nmcli con mod ens160 ipv4.dns"8.8.8.8"; nmcli con up ens160"
ssh root@10.0.0.81 "nmcli con mod ens160 ipv6.addresses 2408:8207:78ca:9fa1:181c::10; nmcli con mod ens160 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens160 ipv6.method manual; nmcli con mod ens160 ipv6.dns"2001:4860:4860::8888"; nmcli con up ens160"
ssh root@10.0.0.82 "nmcli con mod ens160 ipv6.addresses 2408:8207:78ca:9fa1:181c::20; nmcli con mod ens160 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens160 ipv6.method manual; nmcli con mod ens160 ipv6.dns"2001:4860:4860::8888"; nmcli con up ens160"
ssh root@10.0.0.83 "nmcli con mod ens160 ipv6.addresses 2408:8207:78ca:9fa1:181c::30; nmcli con mod ens160 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens160 ipv6.method manual; nmcli con mod ens160 ipv6.dns"2001:4860:4860::8888"; nmcli con up ens160"
ssh root@10.0.0.84 "nmcli con mod ens160 ipv6.addresses 2408:8207:78ca:9fa1:181c::40; nmcli con mod ens160 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens160 ipv6.method manual; nmcli con mod ens160 ipv6.dns"2001:4860:4860::8888"; nmcli con up ens160"
ssh root@10.0.0.85 "nmcli con mod ens160 ipv6.addresses 2408:8207:78ca:9fa1:181c::50; nmcli con mod ens160 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens160 ipv6.method manual; nmcli con mod ens160 ipv6.dns"2001:4860:4860::8888"; nmcli con up ens160"1.3. 设置主机名
hostnamectl set-hostname k8s-master01
hostnamectl set-hostname k8s-master02
hostnamectl set-hostname k8s-master03
hostnamectl set-hostname k8s-node01
hostnamectl set-hostname k8s-node021.4. 配置 yum 源
# 对于 CentOS 7
sudo sed -e 's|^mirrorlist=|#mirrorlist=|g' \
-e 's|^#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tuna.tsinghua.edu.cn|g' \
-i.bak \
/etc/yum.repos.d/CentOS-*.repo
# 对于 CentOS 8
sudo sed -e 's|^mirrorlist=|#mirrorlist=|g' \
-e 's|^#baseurl=http://mirror.centos.org/$contentdir|baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos|g' \
-i.bak \
/etc/yum.repos.d/CentOS-*.repo
sed -e 's|^mirrorlist=|#mirrorlist=|g' -e 's|^#baseurl=http://mirror.centos.org/\$contentdir|baseurl=http://10.0.0.123/centos|g' -i.bak /etc/yum.repos.d/CentOS-*.repo1.5. 装置一些必备工具
yum -y install wget jq psmisc vim net-tools nfs-utils telnet yum-utils device-mapper-persistent-data lvm2 git network-scripts tar curl -y1.6. 选择性下载须要工具
1. 下载 kubernetes1.21.+ 的二进制包
github 二进制包下载地址：https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.21.md
wget https://dl.k8s.io/v1.21.13/kubernetes-server-linux-amd64.tar.gz
2. 下载 etcdctl 二进制包
github 二进制包下载地址：https://github.com/etcd-io/etcd/releases
wget https://github.com/etcd-io/etcd/releases/download/v3.5.4/etcd-v3.5.4-linux-amd64.tar.gz
3.containerd 二进制包下载
github 下载地址：https://github.com/containerd/containerd/releases
containerd 下载时下载带 cni 插件的二进制包。wget https://github.com/containerd/containerd/releases/download/v1.6.6/cri-containerd-cni-1.6.6-linux-amd64.tar.gz
4. 下载 cfssl 二进制包
github 二进制包下载地址：https://github.com/cloudflare/cfssl/releases
wget https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssl_1.6.1_linux_amd64
wget https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssljson_1.6.1_linux_amd64
wget https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssl-certinfo_1.6.1_linux_amd64
5.cni 插件下载
github 下载地址：https://github.com/containernetworking/plugins/releases
wget https://github.com/containernetworking/plugins/releases/download/v1.1.1/cni-plugins-linux-amd64-v1.1.1.tgz
6.crictl 客户端二进制下载
github 下载：https://github.com/kubernetes-sigs/cri-tools/releases
wget https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.23.0/crictl-v1.23.0-linux-amd64.tar.gz1.7. 敞开防火墙
systemctl disable --now firewalld1.8. 敞开 SELinux
setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config1.9. 敞开替换分区
sed -ri 's/.*swap.*/#&/' /etc/fstab
swapoff -a && sysctl -w vm.swappiness=0
cat /etc/fstab
# /dev/mapper/centos-swap swap swap defaults 0 01.10. 敞开 NetworkManager 并启用 network (lb 除外)
systemctl disable --now NetworkManager
systemctl start network && systemctl enable network1.11. 进行工夫同步
服务端
yum install chrony -y
cat > /etc/chrony.conf << EOF
pool ntp.aliyun.com iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
allow 10.0.0.8/8
local stratum 10
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF
systemctl restart chronyd
systemctl enable chronyd
客户端
yum install chrony -y
cat > /etc/chrony.conf << EOF
pool 10.0.0.81 iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF
systemctl restart chronyd ; systemctl enable chronyd
应用客户端进行验证
chronyc sources -v1.12. 配置 ulimit
ulimit -SHn 65535
cat >> /etc/security/limits.conf <<EOF
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* seft memlock unlimited
* hard memlock unlimitedd
EOF1.13. 配置免密登录
yum install -y sshpass
ssh-keygen -f /root/.ssh/id_rsa -P ''export IP="10.0.0.81 10.0.0.82 10.0.0.83 10.0.0.84 10.0.0.85"
export SSHPASS=123123
for HOST in $IP;do
sshpass -e ssh-copy-id -o StrictHostKeyChecking=no $HOST
done1.14. 增加启用源
为 RHEL- 8 或 CentOS- 8 配置源
yum install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm
为 RHEL-7 SL-7 或 CentOS-7 装置 ELRepo
yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm
查看可用安装包
yum --disablerepo="*" --enablerepo="elrepo-kernel" list available1.15. 降级内核至 4.18 版本以上
装置最新的内核
# 我这里抉择的是稳定版 kernel-ml 如需更新长期保护版本 kernel-lt
yum --enablerepo=elrepo-kernel install kernel-ml
查看已装置那些内核
rpm -qa | grep kernel
kernel-core-4.18.0-358.el8.x86_64
kernel-tools-4.18.0-358.el8.x86_64
kernel-ml-core-5.16.7-1.el8.elrepo.x86_64
kernel-ml-5.16.7-1.el8.elrepo.x86_64
kernel-modules-4.18.0-358.el8.x86_64
kernel-4.18.0-358.el8.x86_64
kernel-tools-libs-4.18.0-358.el8.x86_64
kernel-ml-modules-5.16.7-1.el8.elrepo.x86_64
查看默认内核
grubby --default-kernel
/boot/vmlinuz-5.16.7-1.el8.elrepo.x86_64
若不是最新的应用命令设置
grubby --set-default /boot/vmlinuz-「您的内核版本」.x86_64
重启失效
reboot
v8 整合命令为：yum install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm -y ; yum --disablerepo="*" --enablerepo="elrepo-kernel" list available -y ; yum --enablerepo=elrepo-kernel install kernel-ml -y ; grubby --default-kernel ; reboot
v7 整合命令为：yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm -y ; yum --disablerepo="*" --enablerepo="elrepo-kernel" list available -y ; yum --enablerepo=elrepo-kernel install kernel-ml -y ; grubby --set-default \$(ls /boot/vmlinuz-* | grep elrepo) ; grubby --default-kernel1.16. 装置 ipvsadm
yum install ipvsadm ipset sysstat conntrack libseccomp -y
cat >> /etc/modules-load.d/ipvs.conf <<EOF
ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF
systemctl restart systemd-modules-load.service
lsmod | grep -e ip_vs -e nf_conntrack
ip_vs_sh 16384 0
ip_vs_wrr 16384 0
ip_vs_rr 16384 0
ip_vs 180224 6 ip_vs_rr,ip_vs_sh,ip_vs_wrr
nf_conntrack 176128 1 ip_vs
nf_defrag_ipv6 24576 2 nf_conntrack,ip_vs
nf_defrag_ipv4 16384 1 nf_conntrack
libcrc32c 16384 3 nf_conntrack,xfs,ip_vs1.17. 批改内核参数
cat <<EOF > /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
fs.may_detach_mounts = 1
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_watches=89100
fs.file-max=52706963
fs.nr_open=52706963
net.netfilter.nf_conntrack_max=2310720
net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl =15
net.ipv4.tcp_max_tw_buckets = 36000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_max_orphans = 327680
net.ipv4.tcp_orphan_retries = 3
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.ip_conntrack_max = 65536
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.tcp_timestamps = 0
net.core.somaxconn = 16384
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv6.conf.all.forwarding = 0
EOF
sysctl --system1.18. 所有节点配置 hosts 本地解析
cat > /etc/hosts <<EOF
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
2408:8207:78ca:9fa1:181c::10 k8s-master01
2408:8207:78ca:9fa1:181c::20 k8s-master02
2408:8207:78ca:9fa1:181c::30 k8s-master03
2408:8207:78ca:9fa1:181c::40 k8s-node01
2408:8207:78ca:9fa1:181c::50 k8s-node02
10.0.0.81 k8s-master01
10.0.0.82 k8s-master02
10.0.0.83 k8s-master03
10.0.0.84 k8s-node01
10.0.0.85 k8s-node02
10.0.0.89 lb-vip
EOF2.k8s 根本组件装置
2.1. 所有 k8s 节点装置 Containerd 作为 Runtime
wget https://github.com/containernetworking/plugins/releases/download/v1.1.1/cni-plugins-linux-amd64-v1.1.1.tgz
#创立 cni 插件所需目录
mkdir -p /etc/cni/net.d /opt/cni/bin
#解压 cni 二进制包
tar xf cni-plugins-linux-amd64-v1.1.1.tgz -C /opt/cni/bin/
wget https://github.com/containerd/containerd/releases/download/v1.6.6/cri-containerd-cni-1.6.6-linux-amd64.tar.gz
#解压
tar -C / -xzf cri-containerd-cni-1.6.6-linux-amd64.tar.gz
#创立服务启动文件
cat > /etc/systemd/system/containerd.service <<EOF
[Unit]
Description=containerd container runtime
Documentation=https://containerd.io
After=network.target local-fs.target
[Service]
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/local/bin/containerd
Type=notify
Delegate=yes
KillMode=process
Restart=always
RestartSec=5
LimitNPROC=infinity
LimitCORE=infinity
LimitNOFILE=infinity
TasksMax=infinity
OOMScoreAdjust=-999
[Install]
WantedBy=multi-user.target
EOF2.1.1 配置 Containerd 所需的模块
cat <<EOF | sudo tee /etc/modules-load.d/containerd.conf
overlay
br_netfilter
EOF2.1.2 加载模块
systemctl restart systemd-modules-load.service2.1.3 配置 Containerd 所需的内核
cat <<EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF
# 加载内核
sysctl --system2.1.4 创立 Containerd 的配置文件
mkdir -p /etc/containerd
containerd config default | tee /etc/containerd/config.toml
批改 Containerd 的配置文件
sed -i "s#SystemdCgroup\ \=\ false#SystemdCgroup\ \=\ true#g" /etc/containerd/config.toml
cat /etc/containerd/config.toml | grep SystemdCgroup
sed -i "s#k8s.gcr.io#registry.cn-hangzhou.aliyuncs.com/chenby#g" /etc/containerd/config.toml
cat /etc/containerd/config.toml | grep sandbox_image
# 找到 containerd.runtimes.runc.options，在其下退出 SystemdCgroup = true
[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
SystemdCgroup = true
[plugins."io.containerd.grpc.v1.cri".cni]
# 将 sandbox_image 默认地址改为合乎版本地址
sandbox_image = "registry.cn-hangzhou.aliyuncs.com/chenby/pause:3.6"2.1.5 启动并设置为开机启动
systemctl daemon-reload
systemctl enable --now containerd2.1.6 配置 crictl 客户端连贯的运行时地位
wget https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.23.0/crictl-v1.23.0-linux-amd64.tar.gz
#解压
tar xf crictl-v1.23.0-linux-amd64.tar.gz -C /usr/bin/
#生成配置文件
cat > /etc/crictl.yaml <<EOF
runtime-endpoint: unix:///run/containerd/containerd.sock
image-endpoint: unix:///run/containerd/containerd.sock
timeout: 10
debug: false
EOF
#测试
systemctl restart containerd
crictl info
2.2.k8s 与 etcd 下载及装置（仅在 master01 操作）
2.2.1 解压 k8s 安装包
解压 k8s 安装文件
tar -xf kubernetes-server-linux-amd64.tar.gz --strip-components=3 -C /usr/local/bin kubernetes/server/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy}
解压 etcd 安装文件
tar -xf etcd-v3.5.4-linux-amd64.tar.gz --strip-components=1 -C /usr/local/bin etcd-v3.5.4-linux-amd64/etcd{,ctl}
# 查看 /usr/local/bin 下内容
ls /usr/local/bin/
etcd etcdctl kube-apiserver kube-controller-manager kubectl kubelet kube-proxy kube-scheduler2.2.2 查看版本
[root@localhost ~]# kubelet --version
Kubernetes v1.21.13
[root@localhost ~]# etcdctl version
etcdctl version: 3.5.4
API version: 3.5
[root@localhost ~]# 2.2.3 将组件发送至其余 k8s 节点
Master='k8s-master02 k8s-master03'
Work='k8s-node01 k8s-node02'
for NODE in $Master; do echo $NODE; scp /usr/local/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy} $NODE:/usr/local/bin/; scp /usr/local/bin/etcd* $NODE:/usr/local/bin/; done
for NODE in $Work; do scp /usr/local/bin/kube{let,-proxy} $NODE:/usr/local/bin/ ; done2.3 创立证书相干文件
mkdir pki
cd pki
cat > admin-csr.json << EOF
{
"CN": "admin",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "system:masters",
"OU": "Kubernetes-manual"
}
]
}
EOF
cat > ca-config.json << EOF
{
"signing": {
"default": {"expiry": "876000h"},
"profiles": {
"kubernetes": {
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
],
"expiry": "876000h"
}
}
}
}
EOF
cat > etcd-ca-csr.json << EOF
{
"CN": "etcd",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "etcd",
"OU": "Etcd Security"
}
],
"ca": {"expiry": "876000h"}
}
EOF
cat > front-proxy-ca-csr.json << EOF
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"ca": {"expiry": "876000h"}
}
EOF
cat > kubelet-csr.json << EOF
{
"CN": "system:node:\$NODE",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing",
"O": "system:nodes",
"OU": "Kubernetes-manual"
}
]
}
EOF
cat > manager-csr.json << EOF
{
"CN": "system:kube-controller-manager",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "system:kube-controller-manager",
"OU": "Kubernetes-manual"
}
]
}
EOF
cat > apiserver-csr.json << EOF
{
"CN": "kube-apiserver",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "Kubernetes",
"OU": "Kubernetes-manual"
}
]
}
EOF
cat > ca-csr.json << EOF
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "Kubernetes",
"OU": "Kubernetes-manual"
}
],
"ca": {"expiry": "876000h"}
}
EOF
cat > etcd-csr.json << EOF
{
"CN": "etcd",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "etcd",
"OU": "Etcd Security"
}
]
}
EOF
cat > front-proxy-client-csr.json << EOF
{
"CN": "front-proxy-client",
"key": {
"algo": "rsa",
"size": 2048
}
}
EOF
cat > kube-proxy-csr.json << EOF
{
"CN": "system:kube-proxy",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "system:kube-proxy",
"OU": "Kubernetes-manual"
}
]
}
EOF
cat > scheduler-csr.json << EOF
{
"CN": "system:kube-scheduler",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "system:kube-scheduler",
"OU": "Kubernetes-manual"
}
]
}
EOF
cd ..
mkdir bootstrap
cd bootstrap
cat > bootstrap.secret.yaml << EOF
apiVersion: v1
kind: Secret
metadata:
name: bootstrap-token-c8ad9c
namespace: kube-system
type: bootstrap.kubernetes.io/token
stringData:
description: "The default bootstrap token generated by'kubelet '."
token-id: c8ad9c
token-secret: 2e4d610cf3e7426e
usage-bootstrap-authentication: "true"
usage-bootstrap-signing: "true"
auth-extra-groups: system:bootstrappers:default-node-token,system:bootstrappers:worker,system:bootstrappers:ingress
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: kubelet-bootstrap
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:node-bootstrapper
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: Group
name: system:bootstrappers:default-node-token
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: node-autoapprove-bootstrap
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:certificates.k8s.io:certificatesigningrequests:nodeclient
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: Group
name: system:bootstrappers:default-node-token
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: node-autoapprove-certificate-rotation
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:certificates.k8s.io:certificatesigningrequests:selfnodeclient
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: Group
name: system:nodes
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:kube-apiserver-to-kubelet
rules:
- apiGroups:
- ""
resources:
- nodes/proxy
- nodes/stats
- nodes/log
- nodes/spec
- nodes/metrics
verbs:
- "*"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: system:kube-apiserver
namespace: ""
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:kube-apiserver-to-kubelet
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: User
name: kube-apiserver
EOF
cd ..
mkdir coredns
cd coredns
cat > coredns.yaml << EOF
apiVersion: v1
kind: ServiceAccount
metadata:
name: coredns
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:coredns
rules:
- apiGroups:
- ""
resources:
- endpoints
- services
- pods
- namespaces
verbs:
- list
- watch
- apiGroups:
- discovery.k8s.io
resources:
- endpointslices
verbs:
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:coredns
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:coredns
subjects:
- kind: ServiceAccount
name: coredns
namespace: kube-system
---
apiVersion: v1
kind: ConfigMap
metadata:
name: coredns
namespace: kube-system
data:
Corefile: |
.:53 {
errors
health {lameduck 5s}
ready
kubernetes cluster.local in-addr.arpa ip6.arpa {fallthrough in-addr.arpa ip6.arpa}
prometheus :9153
forward . /etc/resolv.conf {max_concurrent 1000}
cache 30
loop
reload
loadbalance
}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: coredns
namespace: kube-system
labels:
k8s-app: kube-dns
kubernetes.io/name: "CoreDNS"
spec:
# replicas: not specified here:
# 1. Default is 1.
# 2. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
selector:
matchLabels:
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: kube-dns
spec:
priorityClassName: system-cluster-critical
serviceAccountName: coredns
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
nodeSelector:
kubernetes.io/os: linux
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- weight: 100
podAffinityTerm:
labelSelector:
matchExpressions:
- key: k8s-app
operator: In
values: ["kube-dns"]
topologyKey: kubernetes.io/hostname
containers:
- name: coredns
image: registry.cn-beijing.aliyuncs.com/dotbalo/coredns:1.8.6
imagePullPolicy: IfNotPresent
resources:
limits:
memory: 170Mi
requests:
cpu: 100m
memory: 70Mi
args: ["-conf", "/etc/coredns/Corefile"]
volumeMounts:
- name: config-volume
mountPath: /etc/coredns
readOnly: true
ports:
- containerPort: 53
name: dns
protocol: UDP
- containerPort: 53
name: dns-tcp
protocol: TCP
- containerPort: 9153
name: metrics
protocol: TCP
securityContext:
allowPrivilegeEscalation: false
capabilities:
add:
- NET_BIND_SERVICE
drop:
- all
readOnlyRootFilesystem: true
livenessProbe:
httpGet:
path: /health
port: 8080
scheme: HTTP
initialDelaySeconds: 60
timeoutSeconds: 5
successThreshold: 1
failureThreshold: 5
readinessProbe:
httpGet:
path: /ready
port: 8181
scheme: HTTP
dnsPolicy: Default
volumes:
- name: config-volume
configMap:
name: coredns
items:
- key: Corefile
path: Corefile
---
apiVersion: v1
kind: Service
metadata:
name: kube-dns
namespace: kube-system
annotations:
prometheus.io/port: "9153"
prometheus.io/scrape: "true"
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
kubernetes.io/name: "CoreDNS"
spec:
selector:
k8s-app: kube-dns
clusterIP: 10.96.0.10
ports:
- name: dns
port: 53
protocol: UDP
- name: dns-tcp
port: 53
protocol: TCP
- name: metrics
port: 9153
protocol: TCP
EOF
cd ..
mkdir metrics-server
cd metrics-server
cat > metrics-server.yaml << EOF
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: metrics-server
rbac.authorization.k8s.io/aggregate-to-admin: "true"
rbac.authorization.k8s.io/aggregate-to-edit: "true"
rbac.authorization.k8s.io/aggregate-to-view: "true"
name: system:aggregated-metrics-reader
rules:
- apiGroups:
- metrics.k8s.io
resources:
- pods
- nodes
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: metrics-server
name: system:metrics-server
rules:
- apiGroups:
- ""
resources:
- pods
- nodes
- nodes/stats
- namespaces
- configmaps
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: metrics-server
name: metrics-server-auth-reader
namespace: kube-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: extension-apiserver-authentication-reader
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: metrics-server
name: metrics-server:system:auth-delegator
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:auth-delegator
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: metrics-server
name: system:metrics-server
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:metrics-server
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: v1
kind: Service
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
ports:
- name: https
port: 443
protocol: TCP
targetPort: https
selector:
k8s-app: metrics-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
selector:
matchLabels:
k8s-app: metrics-server
strategy:
rollingUpdate:
maxUnavailable: 0
template:
metadata:
labels:
k8s-app: metrics-server
spec:
containers:
- args:
- --cert-dir=/tmp
- --secure-port=4443
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
- --kubelet-use-node-status-port
- --metric-resolution=15s
- --kubelet-insecure-tls
- --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem # change to front-proxy-ca.crt for kubeadm
- --requestheader-username-headers=X-Remote-User
- --requestheader-group-headers=X-Remote-Group
- --requestheader-extra-headers-prefix=X-Remote-Extra-
image: registry.cn-beijing.aliyuncs.com/dotbalo/metrics-server:0.5.0
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 3
httpGet:
path: /livez
port: https
scheme: HTTPS
periodSeconds: 10
name: metrics-server
ports:
- containerPort: 4443
name: https
protocol: TCP
readinessProbe:
failureThreshold: 3
httpGet:
path: /readyz
port: https
scheme: HTTPS
initialDelaySeconds: 20
periodSeconds: 10
resources:
requests:
cpu: 100m
memory: 200Mi
securityContext:
readOnlyRootFilesystem: true
runAsNonRoot: true
runAsUser: 1000
volumeMounts:
- mountPath: /tmp
name: tmp-dir
- name: ca-ssl
mountPath: /etc/kubernetes/pki
nodeSelector:
kubernetes.io/os: linux
priorityClassName: system-cluster-critical
serviceAccountName: metrics-server
volumes:
- emptyDir: {}
name: tmp-dir
- name: ca-ssl
hostPath:
path: /etc/kubernetes/pki
---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
labels:
k8s-app: metrics-server
name: v1beta1.metrics.k8s.io
spec:
group: metrics.k8s.io
groupPriorityMinimum: 100
insecureSkipTLSVerify: true
service:
name: metrics-server
namespace: kube-system
version: v1beta1
versionPriority: 100
EOF3. 相干证书生成
master01 节点下载证书生成工具
wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssl_1.6.1_linux_amd64" -O /usr/local/bin/cfssl
wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssljson_1.6.1_linux_amd64" -O /usr/local/bin/cfssljson
chmod +x /usr/local/bin/cfssl /usr/local/bin/cfssljson3.1. 生成 etcd 证书
特地阐明除外，以下操作在所有 master 节点操作
3.1.1 所有 master 节点创立证书寄存目录
mkdir /etc/etcd/ssl -p3.1.2master01 节点生成 etcd 证书
cd Kubernetes/pki/
# 生成 etcd 证书和 etcd 证书的 key（如果你感觉当前可能会扩容，能够在 ip 那多写几个预留进去）cfssl gencert -initca etcd-ca-csr.json | cfssljson -bare /etc/etcd/ssl/etcd-ca
cfssl gencert \
-ca=/etc/etcd/ssl/etcd-ca.pem \
-ca-key=/etc/etcd/ssl/etcd-ca-key.pem \
-config=ca-config.json \
-hostname=127.0.0.1,k8s-master01,k8s-master02,k8s-master03,10.0.0.81,10.0.0.82,10.0.0.83 \
-profile=kubernetes \
etcd-csr.json | cfssljson -bare /etc/etcd/ssl/etcd3.1.3 将证书复制到其余节点
Master='k8s-master02 k8s-master03'
for NODE in $Master; do ssh $NODE "mkdir -p /etc/etcd/ssl"; for FILE in etcd-ca-key.pem etcd-ca.pem etcd-key.pem etcd.pem; do scp /etc/etcd/ssl/${FILE} $NODE:/etc/etcd/ssl/${FILE}; done; done3.2. 生成 k8s 相干证书
特地阐明除外，以下操作在所有 master 节点操作
3.2.1 所有 k8s 节点创立证书寄存目录
mkdir -p /etc/kubernetes/pki3.2.2master01 节点生成 k8s 证书
# 生成一个根证书
cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/kubernetes/pki/ca
# 10.96.0.1 是 service 网段的第一个地址，须要计算，10.0.0.89 为高可用 vip 地址
cfssl gencert \
-ca=/etc/kubernetes/pki/ca.pem \
-ca-key=/etc/kubernetes/pki/ca-key.pem \
-config=ca-config.json \
-hostname=10.96.0.1,10.0.0.89,127.0.0.1,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local,x.oiox.cn,k.oiox.cn,l.oiox.cn,o.oiox.cn,10.0.0.81,10.0.0.82,10.0.0.83,10.0.0.84,10.0.0.85,10.0.0.86,10.0.0.87,10.0.0.88,10.0.0.89,192.168.1.90,192.168.1.40,192.168.1.41 \
-profile=kubernetes apiserver-csr.json | cfssljson -bare /etc/kubernetes/pki/apiserver3.2.3 生成 apiserver 聚合证书
cfssl gencert -initca front-proxy-ca-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-ca
# 有一个正告，能够疏忽
cfssl gencert \
-ca=/etc/kubernetes/pki/front-proxy-ca.pem \
-ca-key=/etc/kubernetes/pki/front-proxy-ca-key.pem \
-config=ca-config.json \
-profile=kubernetes front-proxy-client-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-client3.2.4 生成 controller-manage 的证书
cfssl gencert \
-ca=/etc/kubernetes/pki/ca.pem \
-ca-key=/etc/kubernetes/pki/ca-key.pem \
-config=ca-config.json \
-profile=kubernetes \
manager-csr.json | cfssljson -bare /etc/kubernetes/pki/controller-manager
# 设置一个集群项
kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=https://10.0.0.89:8443 \
--kubeconfig=/etc/kubernetes/controller-manager.kubeconfig
# 设置一个环境项，一个上下文
kubectl config set-context system:kube-controller-manager@kubernetes \
--cluster=kubernetes \
--user=system:kube-controller-manager \
--kubeconfig=/etc/kubernetes/controller-manager.kubeconfig
# 设置一个用户项
kubectl config set-credentials system:kube-controller-manager \
--client-certificate=/etc/kubernetes/pki/controller-manager.pem \
--client-key=/etc/kubernetes/pki/controller-manager-key.pem \
--embed-certs=true \
--kubeconfig=/etc/kubernetes/controller-manager.kubeconfig
# 设置默认环境
kubectl config use-context system:kube-controller-manager@kubernetes \
--kubeconfig=/etc/kubernetes/controller-manager.kubeconfig
cfssl gencert \
-ca=/etc/kubernetes/pki/ca.pem \
-ca-key=/etc/kubernetes/pki/ca-key.pem \
-config=ca-config.json \
-profile=kubernetes \
scheduler-csr.json | cfssljson -bare /etc/kubernetes/pki/scheduler
kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=https://10.0.0.89:8443 \
--kubeconfig=/etc/kubernetes/scheduler.kubeconfig
kubectl config set-credentials system:kube-scheduler \
--client-certificate=/etc/kubernetes/pki/scheduler.pem \
--client-key=/etc/kubernetes/pki/scheduler-key.pem \
--embed-certs=true \
--kubeconfig=/etc/kubernetes/scheduler.kubeconfig
kubectl config set-context system:kube-scheduler@kubernetes \
--cluster=kubernetes \
--user=system:kube-scheduler \
--kubeconfig=/etc/kubernetes/scheduler.kubeconfig
kubectl config use-context system:kube-scheduler@kubernetes \
--kubeconfig=/etc/kubernetes/scheduler.kubeconfig
cfssl gencert \
-ca=/etc/kubernetes/pki/ca.pem \
-ca-key=/etc/kubernetes/pki/ca-key.pem \
-config=ca-config.json \
-profile=kubernetes \
admin-csr.json | cfssljson -bare /etc/kubernetes/pki/admin
kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=https://10.0.0.89:8443 \
--kubeconfig=/etc/kubernetes/admin.kubeconfig
kubectl config set-credentials kubernetes-admin \
--client-certificate=/etc/kubernetes/pki/admin.pem \
--client-key=/etc/kubernetes/pki/admin-key.pem \
--embed-certs=true \
--kubeconfig=/etc/kubernetes/admin.kubeconfig
kubectl config set-context kubernetes-admin@kubernetes \
--cluster=kubernetes \
--user=kubernetes-admin \
--kubeconfig=/etc/kubernetes/admin.kubeconfig
kubectl config use-context kubernetes-admin@kubernetes --kubeconfig=/etc/kubernetes/admin.kubeconfig3.2.5 创立 ServiceAccount Key ——secret
openssl genrsa -out /etc/kubernetes/pki/sa.key 2048
openssl rsa -in /etc/kubernetes/pki/sa.key -pubout -out /etc/kubernetes/pki/sa.pub3.2.6 将证书发送到其余 master 节点
for NODE in k8s-master02 k8s-master03; do for FILE in $(ls /etc/kubernetes/pki | grep -v etcd); do scp /etc/kubernetes/pki/${FILE} $NODE:/etc/kubernetes/pki/${FILE}; done; for FILE in admin.kubeconfig controller-manager.kubeconfig scheduler.kubeconfig; do scp /etc/kubernetes/${FILE} $NODE:/etc/kubernetes/${FILE}; done; done3.2.7 查看证书
ls /etc/kubernetes/pki/
admin.csr apiserver-key.pem ca.pem front-proxy-ca.csr front-proxy-client-key.pem scheduler.csr
admin-key.pem apiserver.pem controller-manager.csr front-proxy-ca-key.pem front-proxy-client.pem scheduler-key.pem
admin.pem ca.csr controller-manager-key.pem front-proxy-ca.pem sa.key scheduler.pem
apiserver.csr ca-key.pem controller-manager.pem front-proxy-client.csr sa.pub
# 一共 23 个就对了
ls /etc/kubernetes/pki/ |wc -l
234.k8s 零碎组件配置
4.1.etcd 配置
4.1.1master01 配置
cat > /etc/etcd/etcd.config.yml << EOF
name: 'k8s-master01'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.81:2380'
listen-client-urls: 'https://10.0.0.81:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.81:2380'
advertise-client-urls: 'https://10.0.0.81:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
peer-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
peer-client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF4.1.2master02 配置
cat > /etc/etcd/etcd.config.yml << EOF
name: 'k8s-master02'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.82:2380'
listen-client-urls: 'https://10.0.0.82:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.82:2380'
advertise-client-urls: 'https://10.0.0.82:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
peer-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
peer-client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF4.1.3master03 配置
cat > /etc/etcd/etcd.config.yml << EOF
name: 'k8s-master03'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.83:2380'
listen-client-urls: 'https://10.0.0.83:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.83:2380'
advertise-client-urls: 'https://10.0.0.83:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
peer-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
peer-client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF4.2. 创立 service（所有 master 节点操作）
4.2.1 创立 etcd.service 并启动
cat > /usr/lib/systemd/system/etcd.service << EOF
[Unit]
Description=Etcd Service
Documentation=https://coreos.com/etcd/docs/latest/
After=network.target
[Service]
Type=notify
ExecStart=/usr/local/bin/etcd --config-file=/etc/etcd/etcd.config.yml
Restart=on-failure
RestartSec=10
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
Alias=etcd3.service
EOF4.2.2 创立 etcd 证书目录
mkdir /etc/kubernetes/pki/etcd
ln -s /etc/etcd/ssl/* /etc/kubernetes/pki/etcd/
systemctl daemon-reload
systemctl enable --now etcd4.2.3 查看 etcd 状态
export ETCDCTL_API=3
etcdctl --endpoints="10.0.0.83:2379,10.0.0.82:2379,10.0.0.81:2379" --cacert=/etc/kubernetes/pki/etcd/etcd-ca.pem --cert=/etc/kubernetes/pki/etcd/etcd.pem --key=/etc/kubernetes/pki/etcd/etcd-key.pem endpoint status --write-out=table
+-------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+-------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| 10.0.0.83:2379 | 7cb7be3df5c81965 | 3.5.2 | 20 kB | false | false | 2 | 9 | 9 | |
| 10.0.0.82:2379 | c077939949ab3f8b | 3.5.2 | 20 kB | false | false | 2 | 9 | 9 | |
| 10.0.0.81:2379 | 2ee388f67565dac9 | 3.5.2 | 20 kB | true | false | 2 | 9 | 9 | |
+-------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
[root@k8s-master01 pki]# 5. 高可用配置
5.1 在 master01 和 master02 和 master03 服务器上操作
5.1.1 装置 keepalived 和 haproxy 服务
yum -y install keepalived haproxy5.1.2 批改 haproxy 配置文件（配置文件一样）
# cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak
cat >/etc/haproxy/haproxy.cfg<<"EOF"
global
maxconn 2000
ulimit-n 16384
log 127.0.0.1 local0 err
stats timeout 30s
defaults
log global
mode http
option httplog
timeout connect 5000
timeout client 50000
timeout server 50000
timeout http-request 15s
timeout http-keep-alive 15s
frontend monitor-in
bind *:33305
mode http
option httplog
monitor-uri /monitor
frontend k8s-master
bind 0.0.0.0:8443
bind 127.0.0.1:8443
mode tcp
option tcplog
tcp-request inspect-delay 5s
default_backend k8s-master
backend k8s-master
mode tcp
option tcplog
option tcp-check
balance roundrobin
default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
server k8s-master01 10.0.0.81:6443 check
server k8s-master02 10.0.0.82:6443 check
server k8s-master03 10.0.0.83:6443 check
EOF5.1.3 配置 keepalived master 节点
#cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak
cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived
global_defs {router_id LVS_DEVEL}
vrrp_script chk_apiserver {
script "/etc/keepalived/check_apiserver.sh"
interval 5
weight -5
fall 2
rise 1
}
vrrp_instance VI_1 {
state MASTER
interface ens160
mcast_src_ip 10.0.0.81
virtual_router_id 51
priority 100
nopreempt
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {10.0.0.89}
track_script {chk_apiserver} }
EOF5.1.4lb02 配置 keepalived backup 节点
# cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak
cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived
global_defs {router_id LVS_DEVEL}
vrrp_script chk_apiserver {
script "/etc/keepalived/check_apiserver.sh"
interval 5
weight -5
fall 2
rise 1
}
vrrp_instance VI_1 {
state BACKUP
interface ens160
mcast_src_ip 192.168.1.82
virtual_router_id 51
priority 50
nopreempt
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {10.0.0.89}
track_script {chk_apiserver} }
EOF5.1.5 配置 keepalived backup 节点
# cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak
cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived
global_defs {router_id LVS_DEVEL}
vrrp_script chk_apiserver {
script "/etc/keepalived/check_apiserver.sh"
interval 5
weight -5
fall 2
rise 1
}
vrrp_instance VI_1 {
state BACKUP
interface ens160
mcast_src_ip 192.168.1.83
virtual_router_id 51
priority 30
nopreempt
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {10.0.0.89}
track_script {chk_apiserver} }
EOF5.1.5 健康检查脚本配置
cat > /etc/keepalived/check_apiserver.sh << EOF
#!/bin/bash
err=0
for k in \$(seq 1 3)
do
check_code=\$(pgrep haproxy)
if [[\$check_code == ""]]; then
err=\$(expr \$err + 1)
sleep 1
continue
else
err=0
break
fi
done
if [[\$err != "0"]]; then
echo "systemctl stop keepalived"
/usr/bin/systemctl stop keepalived
exit 1
else
exit 0
fi
EOF
# 给脚本受权
chmod +x /etc/keepalived/check_apiserver.sh5.1.6 启动服务
systemctl daemon-reload
systemctl enable --now haproxy
systemctl enable --now keepalived5.1.7 测试高可用
# 能 ping 同
[root@k8s-node02 ~]# ping 10.0.0.89
# 能 telnet 拜访
[root@k8s-node02 ~]# telnet 10.0.0.89 8443
# 敞开主节点，看 vip 是否漂移到备节点 6.k8s 组件配置（区别于第 4 点）
所有 k8s 节点创立以下目录
mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes6.1. 创立 apiserver（所有 master 节点）
6.1.1master01 节点配置
cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target
[Service]
ExecStart=/usr/local/bin/kube-apiserver \
--v=2 \
--logtostderr=true \
--allow-privileged=true \
--bind-address=0.0.0.0 \
--secure-port=6443 \
--insecure-port=0 \
--advertise-address=10.0.0.81 \
--service-cluster-ip-range=10.96.0.0/12,fd00::/108 \
--feature-gates=IPv6DualStack=true \
--service-node-port-range=30000-32767 \
--etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 \
--etcd-cafile=/etc/etcd/ssl/etcd-ca.pem \
--etcd-certfile=/etc/etcd/ssl/etcd.pem \
--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem \
--client-ca-file=/etc/kubernetes/pki/ca.pem \
--tls-cert-file=/etc/kubernetes/pki/apiserver.pem \
--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem \
--kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem \
--kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem \
--service-account-key-file=/etc/kubernetes/pki/sa.pub \
--service-account-signing-key-file=/etc/kubernetes/pki/sa.key \
--service-account-issuer=https://kubernetes.default.svc.cluster.local \
--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname \
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota \
--authorization-mode=Node,RBAC \
--enable-bootstrap-token-auth=true \
--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem \
--proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem \
--proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem \
--requestheader-allowed-names=aggregator \
--requestheader-group-headers=X-Remote-Group \
--requestheader-extra-headers-prefix=X-Remote-Extra- \
--requestheader-username-headers=X-Remote-User \
--enable-aggregator-routing=true
# --token-auth-file=/etc/kubernetes/token.csv
Restart=on-failure
RestartSec=10s
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF6.1.2master02 节点配置
cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target
[Service]
ExecStart=/usr/local/bin/kube-apiserver \
--v=2 \
--logtostderr=true \
--allow-privileged=true \
--bind-address=0.0.0.0 \
--secure-port=6443 \
--insecure-port=0 \
--advertise-address=10.0.0.82 \
--service-cluster-ip-range=10.96.0.0/12,fd00::/108 \
--feature-gates=IPv6DualStack=true \
--service-node-port-range=30000-32767 \
--etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 \
--etcd-cafile=/etc/etcd/ssl/etcd-ca.pem \
--etcd-certfile=/etc/etcd/ssl/etcd.pem \
--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem \
--client-ca-file=/etc/kubernetes/pki/ca.pem \
--tls-cert-file=/etc/kubernetes/pki/apiserver.pem \
--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem \
--kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem \
--kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem \
--service-account-key-file=/etc/kubernetes/pki/sa.pub \
--service-account-signing-key-file=/etc/kubernetes/pki/sa.key \
--service-account-issuer=https://kubernetes.default.svc.cluster.local \
--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname \
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota \
--authorization-mode=Node,RBAC \
--enable-bootstrap-token-auth=true \
--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem \
--proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem \
--proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem \
--requestheader-allowed-names=aggregator \
--requestheader-group-headers=X-Remote-Group \
--requestheader-extra-headers-prefix=X-Remote-Extra- \
--requestheader-username-headers=X-Remote-User \
--enable-aggregator-routing=true
# --token-auth-file=/etc/kubernetes/token.csv
Restart=on-failure
RestartSec=10s
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF6.1.3master03 节点配置
cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target
[Service]
ExecStart=/usr/local/bin/kube-apiserver \
--v=2 \
--logtostderr=true \
--allow-privileged=true \
--bind-address=0.0.0.0 \
--secure-port=6443 \
--insecure-port=0 \
--advertise-address=10.0.0.83 \
--service-cluster-ip-range=10.96.0.0/12,fd00::/108 \
--feature-gates=IPv6DualStack=true \
--service-node-port-range=30000-32767 \
--etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 \
--etcd-cafile=/etc/etcd/ssl/etcd-ca.pem \
--etcd-certfile=/etc/etcd/ssl/etcd.pem \
--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem \
--client-ca-file=/etc/kubernetes/pki/ca.pem \
--tls-cert-file=/etc/kubernetes/pki/apiserver.pem \
--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem \
--kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem \
--kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem \
--service-account-key-file=/etc/kubernetes/pki/sa.pub \
--service-account-signing-key-file=/etc/kubernetes/pki/sa.key \
--service-account-issuer=https://kubernetes.default.svc.cluster.local \
--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname \
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota \
--authorization-mode=Node,RBAC \
--enable-bootstrap-token-auth=true \
--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem \
--proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem \
--proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem \
--requestheader-allowed-names=aggregator \
--requestheader-group-headers=X-Remote-Group \
--requestheader-extra-headers-prefix=X-Remote-Extra- \
--requestheader-username-headers=X-Remote-User \
--enable-aggregator-routing=true
# --token-auth-file=/etc/kubernetes/token.csv
Restart=on-failure
RestartSec=10s
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF6.1.4 启动 apiserver（所有 master 节点）
systemctl daemon-reload && systemctl enable --now kube-apiserver
# 留神查看状态是否启动失常
systemctl status kube-apiserver6.2. 配置 kube-controller-manager service
所有 master 节点配置，且配置雷同
172.16.0.0/12 为 pod 网段，按需要设置你本人的网段
cat > /usr/lib/systemd/system/kube-controller-manager.service << EOF
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=network.target
[Service]
ExecStart=/usr/local/bin/kube-controller-manager \
--v=2 \
--logtostderr=true \
--address=127.0.0.1 \
--root-ca-file=/etc/kubernetes/pki/ca.pem \
--cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem \
--cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem \
--service-account-private-key-file=/etc/kubernetes/pki/sa.key \
--kubeconfig=/etc/kubernetes/controller-manager.kubeconfig \
--leader-elect=true \
--use-service-account-credentials=true \
--node-monitor-grace-period=40s \
--node-monitor-period=5s \
--pod-eviction-timeout=2m0s \
--controllers=*,bootstrapsigner,tokencleaner \
--allocate-node-cidrs=true \
--service-cluster-ip-range=10.96.0.0/12,fd00::/108 \
--cluster-cidr=172.16.0.0/12,fc00::/48 \
--node-cidr-mask-size-ipv4=24 \
--node-cidr-mask-size-ipv6=64 \
--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem \
--feature-gates=IPv6DualStack=true
Restart=always
RestartSec=10s
[Install]
WantedBy=multi-user.target
EOF6.2.1 启动 kube-controller-manager，并查看状态
systemctl daemon-reload
systemctl enable --now kube-controller-manager
systemctl status kube-controller-manager6.3. 配置 kube-scheduler service
6.3.1 所有 master 节点配置，且配置雷同
cat > /usr/lib/systemd/system/kube-scheduler.service << EOF
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
After=network.target
[Service]
ExecStart=/usr/local/bin/kube-scheduler \
--v=2 \
--logtostderr=true \
--address=127.0.0.1 \
--leader-elect=true \
--kubeconfig=/etc/kubernetes/scheduler.kubeconfig
Restart=always
RestartSec=10s
[Install]
WantedBy=multi-user.target
EOF6.3.2 启动并查看服务状态
systemctl daemon-reload
systemctl enable --now kube-scheduler
systemctl status kube-scheduler7.TLS Bootstrapping 配置
7.1 在 master01 上配置
cd /root/Kubernetes/bootstrap
kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/pki/ca.pem \
--embed-certs=true --server=https://10.0.0.89:8443 \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
kubectl config set-credentials tls-bootstrap-token-user \
--token=c8ad9c.2e4d610cf3e7426e \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
kubectl config set-context tls-bootstrap-token-user@kubernetes \
--cluster=kubernetes \
--user=tls-bootstrap-token-user \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
kubectl config use-context tls-bootstrap-token-user@kubernetes \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
# token 的地位在 bootstrap.secret.yaml，如果批改的话到这个文件批改
mkdir -p /root/.kube ; cp /etc/kubernetes/admin.kubeconfig /root/.kube/config7.2 查看集群状态，没问题的话持续后续操作
kubectl get cs
Warning: v1 ComponentStatus is deprecated in v1.19+
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
controller-manager Healthy ok
etcd-0 Healthy {"health":"true","reason":""}
etcd-2 Healthy {"health":"true","reason":""}
etcd-1 Healthy {"health":"true","reason":""}
kubectl create -f bootstrap.secret.yaml8.node 节点配置
8.1. 在 master01 上将证书复制到 node 节点
cd /etc/kubernetes/
for NODE in k8s-master02 k8s-master03 k8s-node01 k8s-node02; do ssh $NODE mkdir -p /etc/kubernetes/pki; for FILE in pki/ca.pem pki/ca-key.pem pki/front-proxy-ca.pem bootstrap-kubelet.kubeconfig; do scp /etc/kubernetes/$FILE $NODE:/etc/kubernetes/${FILE}; done; done8.2.kubelet 配置
8.2.1 所有 k8s 节点创立相干目录
mkdir -p /var/lib/kubelet /var/log/kubernetes /etc/systemd/system/kubelet.service.d /etc/kubernetes/manifests/
所有 k8s 节点配置 kubelet service
cat > /usr/lib/systemd/system/kubelet.service << EOF
[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/kubernetes/kubernetes
After=containerd.service
Requires=containerd.service
[Service]
ExecStart=/usr/local/bin/kubelet \
--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig \
--kubeconfig=/etc/kubernetes/kubelet.kubeconfig \
--config=/etc/kubernetes/kubelet-conf.yml \
--network-plugin=cni \
--cni-conf-dir=/etc/cni/net.d \
--cni-bin-dir=/opt/cni/bin \
--container-runtime=remote \
--runtime-request-timeout=15m \
--container-runtime-endpoint=unix:///run/containerd/containerd.sock \
--cgroup-driver=systemd \
--node-labels=node.kubernetes.io/node= \
--feature-gates=IPv6DualStack=true
Restart=always
StartLimitInterval=0
RestartSec=10
[Install]
WantedBy=multi-user.target
EOF 留神若是 CentOS7，将 --node-labels=node.kubernetes.io/node='' 替换为 --node-labels=node.kubernetes.io/node=
将 '' 删除
8.2.2 所有 k8s 节点创立 kubelet 的配置文件
cat > /etc/kubernetes/kubelet-conf.yml <<EOF
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
address: 0.0.0.0
port: 10250
readOnlyPort: 10255
authentication:
anonymous:
enabled: false
webhook:
cacheTTL: 2m0s
enabled: true
x509:
clientCAFile: /etc/kubernetes/pki/ca.pem
authorization:
mode: Webhook
webhook:
cacheAuthorizedTTL: 5m0s
cacheUnauthorizedTTL: 30s
cgroupDriver: systemd
cgroupsPerQOS: true
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
containerLogMaxFiles: 5
containerLogMaxSize: 10Mi
contentType: application/vnd.kubernetes.protobuf
cpuCFSQuota: true
cpuManagerPolicy: none
cpuManagerReconcilePeriod: 10s
enableControllerAttachDetach: true
enableDebuggingHandlers: true
enforceNodeAllocatable:
- pods
eventBurst: 10
eventRecordQPS: 5
evictionHard:
imagefs.available: 15%
memory.available: 100Mi
nodefs.available: 10%
nodefs.inodesFree: 5%
evictionPressureTransitionPeriod: 5m0s
failSwapOn: true
fileCheckFrequency: 20s
hairpinMode: promiscuous-bridge
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 20s
imageGCHighThresholdPercent: 85
imageGCLowThresholdPercent: 80
imageMinimumGCAge: 2m0s
iptablesDropBit: 15
iptablesMasqueradeBit: 14
kubeAPIBurst: 10
kubeAPIQPS: 5
makeIPTablesUtilChains: true
maxOpenFiles: 1000000
maxPods: 110
nodeStatusUpdateFrequency: 10s
oomScoreAdj: -999
podPidsLimit: -1
registryBurst: 10
registryPullQPS: 5
resolvConf: /etc/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 2m0s
serializeImagePulls: true
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 4h0m0s
syncFrequency: 1m0s
volumeStatsAggPeriod: 1m0s
EOF8.2.3 启动 kubelet
systemctl daemon-reload
systemctl restart kubelet
systemctl enable --now kubelet8.2.4 查看集群
[root@k8s-master01 ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-master01 Ready <none> 2m33s v1.22.10
k8s-master02 Ready <none> 2m26s v1.22.10
k8s-master03 Ready <none> 2m27s v1.22.10
k8s-node01 Ready <none> 21s v1.22.10
k8s-node02 Ready <none> 21s v1.22.10
[root@k8s-master01 ~]#
8.3.kube-proxy 配置
8.3.1 此配置只在 master01 操作
cd /root/Kubernetes/
kubectl -n kube-system create serviceaccount kube-proxy
kubectl create clusterrolebinding system:kube-proxy \
--clusterrole system:node-proxier \
--serviceaccount kube-system:kube-proxy
SECRET=$(kubectl -n kube-system get sa/kube-proxy \
--output=jsonpath='{.secrets[0].name}')
JWT_TOKEN=$(kubectl -n kube-system get secret/$SECRET \
--output=jsonpath='{.data.token}' | base64 -d)
PKI_DIR=/etc/kubernetes/pki
K8S_DIR=/etc/kubernetes
kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=https://10.0.0.89:8443 \
--kubeconfig=${K8S_DIR}/kube-proxy.kubeconfig
kubectl config set-credentials kubernetes \
--token=${JWT_TOKEN} \
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig
kubectl config set-context kubernetes \
--cluster=kubernetes \
--user=kubernetes \
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig
kubectl config use-context kubernetes \
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig8.3.2 将 kubeconfig 发送至其余节点
for NODE in k8s-master02 k8s-master03; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig; done
for NODE in k8s-node01 k8s-node02; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig; done8.3.3 所有 k8s 节点增加 kube-proxy 的配置和 service 文件
cat > /usr/lib/systemd/system/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Kube Proxy
Documentation=https://github.com/kubernetes/kubernetes
After=network.target
[Service]
ExecStart=/usr/local/bin/kube-proxy \
--config=/etc/kubernetes/kube-proxy.yaml \
--v=2
Restart=always
RestartSec=10s
[Install]
WantedBy=multi-user.target
EOFcat > /etc/kubernetes/kube-proxy.yaml << EOF
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
clientConnection:
acceptContentTypes: ""
burst: 10
contentType: application/vnd.kubernetes.protobuf
kubeconfig: /etc/kubernetes/kube-proxy.kubeconfig
qps: 5
clusterCIDR: 172.16.0.0/12,fc00::/48
configSyncPeriod: 15m0s
conntrack:
max: null
maxPerCore: 32768
min: 131072
tcpCloseWaitTimeout: 1h0m0s
tcpEstablishedTimeout: 24h0m0s
enableProfiling: false
healthzBindAddress: 0.0.0.0:10256
hostnameOverride: ""
iptables:
masqueradeAll: false
masqueradeBit: 14
minSyncPeriod: 0s
syncPeriod: 30s
ipvs:
masqueradeAll: true
minSyncPeriod: 5s
scheduler: "rr"
syncPeriod: 30s
kind: KubeProxyConfiguration
metricsBindAddress: 127.0.0.1:10249
mode: "ipvs"
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""
udpIdleTimeout: 250ms
EOF8.3.4 启动 kube-proxy
systemctl daemon-reload
systemctl enable --now kube-proxy9. 装置 Calico
9.1 以下步骤只在 master01 操作
9.1.1 更改 calico 网段
# vim calico.yaml
vim calico-ipv6.yaml
# calico-config ConfigMap 处
"ipam": {
"type": "calico-ipam",
"assign_ipv4": "true",
"assign_ipv6": "true"
},
- name: IP
value: "autodetect"
- name: IP6
value: "autodetect"
- name: CALICO_IPV4POOL_CIDR
value: "172.16.0.0/16"
- name: CALICO_IPV6POOL_CIDR
value: "fc00::/48"
- name: FELIX_IPV6SUPPORT
value: "true"
# kubectl apply -f calico.yaml
kubectl apply -f calico-ipv6.yaml9.1.2 查看容器状态
[root@k8s-master01 ~]# kubectl get pod -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-8584d8c997-292bv 1/1 Running 0 48s
kube-system calico-node-6r5qq 1/1 Running 0 48s
kube-system calico-node-dpgx8 1/1 Running 0 48s
kube-system calico-node-p68z4 1/1 Running 0 48s
kube-system calico-node-rc7gx 1/1 Running 0 48s
kube-system calico-node-xqvsx 1/1 Running 0 48s
kube-system calico-typha-687cbc9f97-nlx2q 1/1 Running 0 48s
[root@k8s-master01 ~]# 10. 装置 CoreDNS
10.1 以下步骤只在 master01 操作
10.1.1 批改文件
cd CoreDNS/
sed -i "s#KUBEDNS_SERVICE_IP#10.96.0.10#g" coredns.yaml
cat coredns.yaml | grep clusterIP:
clusterIP: 10.96.0.10 10.1.2 装置
kubectl create -f coredns.yaml
serviceaccount/coredns created
clusterrole.rbac.authorization.k8s.io/system:coredns created
clusterrolebinding.rbac.authorization.k8s.io/system:coredns created
configmap/coredns created
deployment.apps/coredns created
service/kube-dns created11. 装置 Metrics Server
11.1 以下步骤只在 master01 操作
11.1.1 装置 Metrics-server
在新版的 Kubernetes 中系统资源的采集均应用 Metrics-server，能够通过 Metrics 采集节点和 Pod 的内存、磁盘、CPU 和网络的使用率
装置 metrics server
cd metrics-server/
kubectl create -f .
serviceaccount/metrics-server created
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrole.rbac.authorization.k8s.io/system:metrics-server created
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
service/metrics-server created
deployment.apps/metrics-server created
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created11.1.2 稍等片刻查看状态
kubectl top node
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
k8s-master01 154m 1% 1715Mi 21%
k8s-master02 151m 1% 1274Mi 16%
k8s-master03 523m 6% 1345Mi 17%
k8s-node01 84m 1% 671Mi 8%
k8s-node02 73m 0% 727Mi 9% 12. 集群验证
12.1 部署 pod 资源
cat<<EOF | kubectl apply -f -
apiVersion: v1
kind: Pod
metadata:
name: busybox
namespace: default
spec:
containers:
- name: busybox
image: busybox:1.28
command:
- sleep
- "3600"
imagePullPolicy: IfNotPresent
restartPolicy: Always
EOF
# 查看
kubectl get pod
NAME READY STATUS RESTARTS AGE
busybox 1/1 Running 0 17s12.2 用 pod 解析默认命名空间中的 kubernetes
kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 17h
kubectl exec busybox -n default -- nslookup kubernetes
3Server: 10.96.0.10
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local
Name: kubernetes
Address 1: 10.96.0.1 kubernetes.default.svc.cluster.local12.3 测试跨命名空间是否能够解析
kubectl exec busybox -n default -- nslookup kube-dns.kube-system
Server: 10.96.0.10
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local
Name: kube-dns.kube-system
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local12.4 每个节点都必须要能拜访 Kubernetes 的 kubernetes svc 443 和 kube-dns 的 service 53
telnet 10.96.0.1 443
Trying 10.96.0.1...
Connected to 10.96.0.1.
Escape character is '^]'.
telnet 10.96.0.10 53
Trying 10.96.0.10...
Connected to 10.96.0.10.
Escape character is '^]'.
curl 10.96.0.10:53
curl: (52) Empty reply from server12.5Pod 和 Pod 之前要能通
kubectl get po -owide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
busybox 1/1 Running 0 17m 172.27.14.193 k8s-node02 <none> <none>
kubectl get po -n kube-system -owide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
calico-kube-controllers-5dffd5886b-4blh6 1/1 Running 0 77m 172.25.244.193 k8s-master01 <none> <none>
calico-node-fvbdq 1/1 Running 1 (75m ago) 77m 10.0.0.81 k8s-master01 <none> <none>
calico-node-g8nqd 1/1 Running 0 77m 10.0.0.84 k8s-node01 <none> <none>
calico-node-mdps8 1/1 Running 0 77m 10.0.0.85 k8s-node02 <none> <none>
calico-node-nf4nt 1/1 Running 0 77m 10.0.0.83 k8s-master03 <none> <none>
calico-node-sq2ml 1/1 Running 0 77m 10.0.0.82 k8s-master02 <none> <none>
calico-typha-8445487f56-mg6p8 1/1 Running 0 77m 10.0.0.85 k8s-node02 <none> <none>
calico-typha-8445487f56-pxbpj 1/1 Running 0 77m 10.0.0.81 k8s-master01 <none> <none>
calico-typha-8445487f56-tnssl 1/1 Running 0 77m 10.0.0.84 k8s-node01 <none> <none>
coredns-5db5696c7-67h79 1/1 Running 0 63m 172.25.92.65 k8s-master02 <none> <none>
metrics-server-6bf7dcd649-5fhrw 1/1 Running 0 61m 172.18.195.1 k8s-master03 <none> <none>
# 进入 busybox ping 其余节点上的 pod
kubectl exec -ti busybox -- sh
/ # ping 10.0.0.84
PING 10.0.0.84 (10.0.0.84): 56 data bytes
64 bytes from 10.0.0.84: seq=0 ttl=63 time=0.358 ms
64 bytes from 10.0.0.84: seq=1 ttl=63 time=0.668 ms
64 bytes from 10.0.0.84: seq=2 ttl=63 time=0.637 ms
64 bytes from 10.0.0.84: seq=3 ttl=63 time=0.624 ms
64 bytes from 10.0.0.84: seq=4 ttl=63 time=0.907 ms
# 能够连通证实这个 pod 是能够跨命名空间和跨主机通信的 12.6 创立三个正本，能够看到 3 个正本散布在不同的节点上（用完能够删了）
cat > deployments.yaml << EOF
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: nginx
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.14.2
ports:
- containerPort: 80
EOF
kubectl apply -f deployments.yaml
deployment.apps/nginx-deployment created
kubectl get pod
NAME READY STATUS RESTARTS AGE
busybox 1/1 Running 0 6m25s
nginx-deployment-9456bbbf9-4bmvk 1/1 Running 0 8s
nginx-deployment-9456bbbf9-9rcdk 1/1 Running 0 8s
nginx-deployment-9456bbbf9-dqv8s 1/1 Running 0 8s
# 删除 nginx
[root@k8s-master01 ~]# kubectl delete -f deployments.yaml 13. 装置 dashboard
cd dashboard/
kubectl create -f .
serviceaccount/admin-user created
clusterrolebinding.rbac.authorization.k8s.io/admin-user created
namespace/kubernetes-dashboard created
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
deployment.apps/dashboard-metrics-scraper created13.1 创立管理员用户
cat > admin.yaml << EOF
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin-user
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kube-system
EOF13.2 执行 yaml 文件
kubectl apply -f admin.yaml -n kube-system
serviceaccount/admin-user created
clusterrolebinding.rbac.authorization.k8s.io/admin-user created13.3 更改 dashboard 的 svc 为 NodePort，如果已是请疏忽
kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard
type: NodePort13.4 查看端口号
kubectl get svc kubernetes-dashboard -n kubernetes-dashboard
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes-dashboard NodePort 10.98.201.22 <none> 443:31245/TCP 10m13.5 查看 token
kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}')
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes-dashboard NodePort 10.107.222.221 <none> 443:31824/TCP 30s
[root@k8s-master01 dashboard]# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}')
Name: admin-user-token-qfmf6
Namespace: kube-system
Labels: <none>
Annotations: kubernetes.io/service-account.name: admin-user
kubernetes.io/service-account.uid: 944c5bf6-059a-4e5e-8b18-462956dd0466
Type: kubernetes.io/service-account-token
Data
====
namespace: 11 bytes
token: eyJhbGciOiJSUzI1NiIsImtpZCI6IjZ3RFhuV1U5dmgwbmJESEdHYjR2SUNHeWFjdzMwWnRUb2pYZXNGNUlrb2cifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLXFmbWY2Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiI5NDRjNWJmNi0wNTlhLTRlNWUtOGIxOC00NjI5NTZkZDA0NjYiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.I7QJPtETU3FuIqQEMyq7T0yC7wsr7-mQSlcxr4qBl3JKqODOdp2t3wBgpE76rb8eHtFb7PdJa5-hmsyDPbtOwXoji2RKkt_ODBX0hpc-cS8OC4VFgTTnQVNTObLn1nP2sPTlAMJHkN5gza1W-lJanpXDwm-pzxUfVyoBn0a_AWwCc7AamhFrkSGHwEyoOFiN7-UuLAfWnjJtiiWWhugQbduzhvO78QGCWHGwewpSZ74qzfZgQftchXhJa_284_L9LhIFyh8qin5eoRZUi0ALz3wHsGD0L8hMXWqqSnHPswO3SkBRUMtt9CNCqDpH9WeNMNyut7m5MAg5I0nWMhggJQ
ca.crt: 1363 bytes
13.6 登录 dashboard
https://10.0.0.81:31245/
eyJhbGciOiJSUzI1NiIsImtpZCI6IjZ3RFhuV1U5dmgwbmJESEdHYjR2SUNHeWFjdzMwWnRUb2pYZXNGNUlrb2cifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLXFmbWY2Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiI5NDRjNWJmNi0wNTlhLTRlNWUtOGIxOC00NjI5NTZkZDA0NjYiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.I7QJPtETU3FuIqQEMyq7T0yC7wsr7-mQSlcxr4qBl3JKqODOdp2t3wBgpE76rb8eHtFb7PdJa5-hmsyDPbtOwXoji2RKkt_ODBX0hpc-cS8OC4VFgTTnQVNTObLn1nP2sPTlAMJHkN5gza1W-lJanpXDwm-pzxUfVyoBn0a_AWwCc7AamhFrkSGHwEyoOFiN7-UuLAfWnjJtiiWWhugQbduzhvO78QGCWHGwewpSZ74qzfZgQftchXhJa_284_L9LhIFyh8qin5eoRZUi0ALz3wHsGD0L8hMXWqqSnHPswO3SkBRUMtt9CNCqDpH9WeNMNyut7m5MAg5I0nWMhggJQ
14.ingress 装置
14.1 写入配置文件，并执行
[root@hello ~/yaml]# vim deploy.yaml
[root@hello ~/yaml]#
[root@hello ~/yaml]#
[root@hello ~/yaml]# cat deploy.yaml
apiVersion: v1
kind: Namespace
metadata:
name: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
---
# Source: ingress-nginx/templates/controller-serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
automountServiceAccountToken: true
---
# Source: ingress-nginx/templates/controller-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller
namespace: ingress-nginx
data:
allow-snippet-annotations: 'true'
---
# Source: ingress-nginx/templates/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
name: ingress-nginx
rules:
- apiGroups:
- ''
resources:
- configmaps
- endpoints
- nodes
- pods
- secrets
- namespaces
verbs:
- list
- watch
- apiGroups:
- ''
resources:
- nodes
verbs:
- get
- apiGroups:
- ''
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- events
verbs:
- create
- patch
- apiGroups:
- networking.k8s.io
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- networking.k8s.io
resources:
- ingressclasses
verbs:
- get
- list
- watch
---
# Source: ingress-nginx/templates/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
name: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-nginx
subjects:
- kind: ServiceAccount
name: ingress-nginx
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
rules:
- apiGroups:
- ''
resources:
- namespaces
verbs:
- get
- apiGroups:
- ''
resources:
- configmaps
- pods
- secrets
- endpoints
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- networking.k8s.io
resources:
- ingressclasses
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- configmaps
resourceNames:
- ingress-controller-leader
verbs:
- get
- update
- apiGroups:
- ''
resources:
- configmaps
verbs:
- create
- apiGroups:
- ''
resources:
- events
verbs:
- create
- patch
---
# Source: ingress-nginx/templates/controller-rolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: ingress-nginx
subjects:
- kind: ServiceAccount
name: ingress-nginx
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-service-webhook.yaml
apiVersion: v1
kind: Service
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller-admission
namespace: ingress-nginx
spec:
type: ClusterIP
ports:
- name: https-webhook
port: 443
targetPort: webhook
appProtocol: https
selector:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
---
# Source: ingress-nginx/templates/controller-service.yaml
apiVersion: v1
kind: Service
metadata:
annotations:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller
namespace: ingress-nginx
spec:
type: NodePort
externalTrafficPolicy: Local
ipFamilyPolicy: SingleStack
ipFamilies:
- IPv4
ports:
- name: http
port: 80
protocol: TCP
targetPort: http
appProtocol: http
- name: https
port: 443
protocol: TCP
targetPort: https
appProtocol: https
selector:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
---
# Source: ingress-nginx/templates/controller-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller
namespace: ingress-nginx
spec:
selector:
matchLabels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
revisionHistoryLimit: 10
minReadySeconds: 0
template:
metadata:
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
spec:
dnsPolicy: ClusterFirst
containers:
- name: controller
image: registry.cn-hangzhou.aliyuncs.com/chenby/controller:v1.1.3
imagePullPolicy: IfNotPresent
lifecycle:
preStop:
exec:
command:
- /wait-shutdown
args:
- /nginx-ingress-controller
- --election-id=ingress-controller-leader
- --controller-class=k8s.io/ingress-nginx
- --configmap=$(POD_NAMESPACE)/ingress-nginx-controller
- --validating-webhook=:8443
- --validating-webhook-certificate=/usr/local/certificates/cert
- --validating-webhook-key=/usr/local/certificates/key
securityContext:
capabilities:
drop:
- ALL
add:
- NET_BIND_SERVICE
runAsUser: 101
allowPrivilegeEscalation: true
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: LD_PRELOAD
value: /usr/local/lib/libmimalloc.so
livenessProbe:
failureThreshold: 5
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
readinessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
ports:
- name: http
containerPort: 80
protocol: TCP
- name: https
containerPort: 443
protocol: TCP
- name: webhook
containerPort: 8443
protocol: TCP
volumeMounts:
- name: webhook-cert
mountPath: /usr/local/certificates/
readOnly: true
resources:
requests:
cpu: 100m
memory: 90Mi
nodeSelector:
kubernetes.io/os: linux
serviceAccountName: ingress-nginx
terminationGracePeriodSeconds: 300
volumes:
- name: webhook-cert
secret:
secretName: ingress-nginx-admission
---
# Source: ingress-nginx/templates/controller-ingressclass.yaml
# We don't support namespaced ingressClass yet
# So a ClusterRole and a ClusterRoleBinding is required
apiVersion: networking.k8s.io/v1
kind: IngressClass
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: nginx
namespace: ingress-nginx
spec:
controller: k8s.io/ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/validating-webhook.yaml
# before changing this value, check the required kubernetes version
# https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/#prerequisites
apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingWebhookConfiguration
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
name: ingress-nginx-admission
webhooks:
- name: validate.nginx.ingress.kubernetes.io
matchPolicy: Equivalent
rules:
- apiGroups:
- networking.k8s.io
apiVersions:
- v1
operations:
- CREATE
- UPDATE
resources:
- ingresses
failurePolicy: Fail
sideEffects: None
admissionReviewVersions:
- v1
clientConfig:
service:
namespace: ingress-nginx
name: ingress-nginx-controller-admission
path: /networking/v1/ingresses
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: ingress-nginx-admission
namespace: ingress-nginx
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
rules:
- apiGroups:
- admissionregistration.k8s.io
resources:
- validatingwebhookconfigurations
verbs:
- get
- update
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-nginx-admission
subjects:
- kind: ServiceAccount
name: ingress-nginx-admission
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: ingress-nginx-admission
namespace: ingress-nginx
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
rules:
- apiGroups:
- ''
resources:
- secrets
verbs:
- get
- create
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/rolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: ingress-nginx-admission
namespace: ingress-nginx
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: ingress-nginx-admission
subjects:
- kind: ServiceAccount
name: ingress-nginx-admission
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/job-createSecret.yaml
apiVersion: batch/v1
kind: Job
metadata:
name: ingress-nginx-admission-create
namespace: ingress-nginx
annotations:
helm.sh/hook: pre-install,pre-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
template:
metadata:
name: ingress-nginx-admission-create
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
containers:
- name: create
image: registry.cn-hangzhou.aliyuncs.com/chenby/kube-webhook-certgen:v1.1.1
imagePullPolicy: IfNotPresent
args:
- create
- --host=ingress-nginx-controller-admission,ingress-nginx-controller-admission.$(POD_NAMESPACE).svc
- --namespace=$(POD_NAMESPACE)
- --secret-name=ingress-nginx-admission
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
securityContext:
allowPrivilegeEscalation: false
restartPolicy: OnFailure
serviceAccountName: ingress-nginx-admission
nodeSelector:
kubernetes.io/os: linux
securityContext:
runAsNonRoot: true
runAsUser: 2000
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/job-patchWebhook.yaml
apiVersion: batch/v1
kind: Job
metadata:
name: ingress-nginx-admission-patch
namespace: ingress-nginx
annotations:
helm.sh/hook: post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
template:
metadata:
name: ingress-nginx-admission-patch
labels:
helm.sh/chart: ingress-nginx-4.0.10
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.1.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
containers:
- name: patch
image: registry.cn-hangzhou.aliyuncs.com/chenby/kube-webhook-certgen:v1.1.1
imagePullPolicy: IfNotPresent
args:
- patch
- --webhook-name=ingress-nginx-admission
- --namespace=$(POD_NAMESPACE)
- --patch-mutating=false
- --secret-name=ingress-nginx-admission
- --patch-failure-policy=Fail
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
securityContext:
allowPrivilegeEscalation: false
restartPolicy: OnFailure
serviceAccountName: ingress-nginx-admission
nodeSelector:
kubernetes.io/os: linux
securityContext:
runAsNonRoot: true
runAsUser: 2000
[root@hello ~/yaml]#
14.2 启用后端，写入配置文件执行
[root@hello ~/yaml]# vim backend.yaml
[root@hello ~/yaml]# cat backend.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: default-http-backend
labels:
app.kubernetes.io/name: default-http-backend
namespace: kube-system
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: default-http-backend
template:
metadata:
labels:
app.kubernetes.io/name: default-http-backend
spec:
terminationGracePeriodSeconds: 60
containers:
- name: default-http-backend
image: registry.cn-hangzhou.aliyuncs.com/chenby/defaultbackend-amd64:1.5
livenessProbe:
httpGet:
path: /healthz
port: 8080
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5
ports:
- containerPort: 8080
resources:
limits:
cpu: 10m
memory: 20Mi
requests:
cpu: 10m
memory: 20Mi
---
apiVersion: v1
kind: Service
metadata:
name: default-http-backend
namespace: kube-system
labels:
app.kubernetes.io/name: default-http-backend
spec:
ports:
- port: 80
targetPort: 8080
selector:
app.kubernetes.io/name: default-http-backend
[root@hello ~/yaml]#
14.3 装置测试利用
[root@hello ~/yaml]# vim ingress-demo-app.yaml
[root@hello ~/yaml]#
[root@hello ~/yaml]# cat ingress-demo-app.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: hello-server
spec:
replicas: 2
selector:
matchLabels:
app: hello-server
template:
metadata:
labels:
app: hello-server
spec:
containers:
- name: hello-server
image: registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/hello-server
ports:
- containerPort: 9000
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: nginx-demo
name: nginx-demo
spec:
replicas: 2
selector:
matchLabels:
app: nginx-demo
template:
metadata:
labels:
app: nginx-demo
spec:
containers:
- image: nginx
name: nginx
---
apiVersion: v1
kind: Service
metadata:
labels:
app: nginx-demo
name: nginx-demo
spec:
selector:
app: nginx-demo
ports:
- port: 8000
protocol: TCP
targetPort: 80
---
apiVersion: v1
kind: Service
metadata:
labels:
app: hello-server
name: hello-server
spec:
selector:
app: hello-server
ports:
- port: 8000
protocol: TCP
targetPort: 9000
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-host-bar
spec:
ingressClassName: nginx
rules:
- host: "hello.chenby.cn"
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: hello-server
port:
number: 8000
- host: "demo.chenby.cn"
http:
paths:
- pathType: Prefix
path: "/nginx"
backend:
service:
name: nginx-demo
port:
number: 8000
[root@hello ~/yaml]#
[root@hello ~/yaml]# kubectl get ingress
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress-demo-app <none> app.demo.com 10.0.0.81 80 20m
ingress-host-bar nginx hello.chenby.cn,demo.chenby.cn 10.0.0.81 80 2m17s
[root@hello ~/yaml]#
14.4 执行部署
root@hello:~# kubectl apply -f deploy.yaml
namespace/ingress-nginx created
serviceaccount/ingress-nginx created
configmap/ingress-nginx-controller created
clusterrole.rbac.authorization.k8s.io/ingress-nginx created
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx created
role.rbac.authorization.k8s.io/ingress-nginx created
rolebinding.rbac.authorization.k8s.io/ingress-nginx created
service/ingress-nginx-controller-admission created
service/ingress-nginx-controller created
deployment.apps/ingress-nginx-controller created
ingressclass.networking.k8s.io/nginx created
validatingwebhookconfiguration.admissionregistration.k8s.io/ingress-nginx-admission created
serviceaccount/ingress-nginx-admission created
clusterrole.rbac.authorization.k8s.io/ingress-nginx-admission created
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created
role.rbac.authorization.k8s.io/ingress-nginx-admission created
rolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created
job.batch/ingress-nginx-admission-create created
job.batch/ingress-nginx-admission-patch created
root@hello:~#
root@hello:~# kubectl apply -f backend.yaml
deployment.apps/default-http-backend created
service/default-http-backend created
root@hello:~#
root@hello:~# kubectl apply -f ingress-demo-app.yaml
deployment.apps/hello-server created
deployment.apps/nginx-demo created
service/nginx-demo created
service/hello-server created
ingress.networking.k8s.io/ingress-host-bar created
root@hello:~#
14.5 过滤查看 ingress 端口
[root@hello ~/yaml]# kubectl get svc -A | grep ingress
default ingress-demo-app ClusterIP 10.68.231.41 <none> 80/TCP 51m
ingress-nginx ingress-nginx-controller NodePort 10.68.93.71 <none> 80:32746/TCP,443:30538/TCP 32m
ingress-nginx ingress-nginx-controller-admission ClusterIP 10.68.146.23 <none> 443/TCP 32m
[root@hello ~/yaml]#
15. 装置命令行主动补全性能
yum install bash-completion -y
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)
echo "source <(kubectl completion bash)" >> ~/.bashrc对于
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发表至： kubernetes
2022-06-15
