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1. 环境要求:
docker 安装环境:centos7 及以上
kernel 内核:3.10 及以上
可使用下面命令查看
2. 准备 docker 安装包和安装脚本
docker-18.06.3 安装包
docker 安装脚本
#!/bin/sh
usage(){
echo "使用方法: $0 FILE_NAME_DOCKER_CE_TAR_GZ"
echo "$0 docker-18.06.3-ce.tgz"
echo "Get docker-ce binary from: https://download.docker.com/linux/static/stable/x86_64/"
echo "eg: wget https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz"
echo ""
}
SYSTEMDDIR=/usr/lib/systemd/system
SERVICEFILE=docker.service
DOCKERDIR=/usr/bin
DOCKERBIN=docker
SERVICENAME=docker
if [$# -ne 1]; then
usage
exit 1
else
FILETARGZ="$1"
fi
if [! -f ${FILETARGZ} ]; then
echo "Docker binary tgz files does not exist, please check it"
echo "Get docker-ce binary from: https://download.docker.com/linux/static/stable/x86_64/"
echo "eg: wget https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz"
exit 1
fi
echo "##unzip : tar xvpf ${FILETARGZ}"
tar xvpf ${FILETARGZ}
echo
echo "##binary : ${DOCKERBIN} copy to ${DOCKERDIR}"
cp -p ${DOCKERBIN}/* ${DOCKERDIR} >/dev/null 2>&1
which ${DOCKERBIN}
echo "##systemd service: ${SERVICEFILE}"
echo "##docker.service: create docker systemd file"
cat >${SYSTEMDDIR}/${SERVICEFILE} <<EOF
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.com
After=network.target docker.socket
[Service]
Type=notify
EnvironmentFile=-/run/flannel/docker
WorkingDirectory=/usr/local/bin
ExecStart=/usr/bin/dockerd \
-H tcp://0.0.0.0:4243 \
-H unix:///var/run/docker.sock \
--selinux-enabled=false \
--log-opt max-size=1g
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
echo ""
systemctl daemon-reload
echo "##Service status: ${SERVICENAME}"
systemctl status ${SERVICENAME}
echo "##Service restart: ${SERVICENAME}"
systemctl restart ${SERVICENAME}
echo "##Service status: ${SERVICENAME}"
systemctl status ${SERVICENAME}
echo "##Service enabled: ${SERVICENAME}"
systemctl enable ${SERVICENAME}
cat >/etc/docker/daemon.json <<EOF
{"registry-mirrors": ["http://hub-mirror.c.163.com"]
}
EOF
swapoff -a
iptables -P FORWARD ACCEPT
sysctl --system
systemctl daemon-reload
systemctl restart docker.service
echo "## docker version"
docker version
3. 将 docker 安装脚本和安装包放在同一目录后执行安装脚本:
4.docker 启动情况确认
从上图可以看出 docker 服务能正常重启,其他命令自己可以尝试
5. 如果正常的 docker 环境出现了乱七八糟的问题,可以先把 /var/lib/docker 备份后再执行上述 1~4 步骤,这样大部分问题都可以解决。
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