前言:
后端小伙伴们筹备搞 pvp 对战服务。配置核心选型抉择了阿里云的 nacos 服务。参照 https://nacos.io/zh-cn/docs。因为业务布局都在 kubernetes 集群上,就简略参照 https://nacos.io/zh-cn/docs/use-nacos-with-kubernetes.html 做了一个 demo 让他们先玩一下。
对于 nacos:
参照:https://nacos.io/zh-cn/docs/what-is-nacos.html
- 服务发现和衰弱监测: 反对基于 DNS 和基于 RPC 的服务发现。服务提供者应用 原生 SDK、OpenAPI、或一个独立的 Agent TODO 注册 Service 后,服务消费者能够应用 DNS TODO 或 HTTP&API 查找和发现服务。提供对服务的实时的健康检查,阻止向不衰弱的主机或服务实例发送申请
- 动静配置服务: Nacos 提供配置对立治理性能,可能帮忙咱们将配置以中心化、内部化和动态化的形式治理所有环境的利用配置和服务配置。
- 动静 DNS 服务: Nacos 反对动静 DNS 服务权重路由,可能让咱们很容易地实现中间层负载平衡、更灵便的路由策略、流量管制以及数据中心内网的简略 DNS 解析服务。
- 服务及其元数据管理: Nacos 反对从微服务平台建设的视角治理数据中心的所有服务及元数据,包含治理服务的形容、生命周期、服务的动态依赖剖析、服务的衰弱状态、服务的流量治理、路由及安全策略、服务的 SLA 以及最首要的 metrics 统计数据。
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嗯 还有更多的个性列表 ……
一. nacos on kubernetes
根本的装置过程参照:https://github.com/nacos-group/nacos-k8s/blob/master/README-CN.md
1. 创立命名空间
嗯当然了第一步还是先创立一个搭建 nacos 服务的 namespace 了:
kubectl create ns nacos
2. git clone 仓库
git clone https://github.com/nacos-group/nacos-k8s.git
根本都会因为网络起因无奈 clone, 我是间接下载包到本地 而后上传到服务器了。
3. 部署初始化 mysql 服务器
生产的话必定是用云商的云数据库了,比方腾讯云的 rds 服务。因为只是给程序整一个 demo 让他们玩一下,就讲 mysql 整合在 kubernetes 中了。 集体存储 storageclass 都是应用默认的腾讯云的 cbs-csi。
cd /nacos-k8s/mysql(当然了我是上传的目录门路是 /root/nacos/nacos-k8s-master/deploy/mysql)1. 部署 mysql 服务
cat pvc.yaml
apiVersion: v1 kind: PersistentVolumeClaim metadata: name: nacos-mysql-pvc namespace: nacos spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi storageClassName: cbs-csi
mysql 的部署文件间接复制了 mysql-ceph.yaml 的批改了一下:
cat mysql.yamlapiVersion: v1 kind: PersistentVolumeClaim metadata: name: nacos-mysql-pvc namespace: nacos spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi storageClassName: cbs-csi [root@sh-master-01 mysql]# cat mysql.yaml apiVersion: v1 kind: ReplicationController metadata: name: mysql labels: name: mysql spec: replicas: 1 selector: name: mysql template: metadata: labels: name: mysql spec: containers: - name: mysql image: nacos/nacos-mysql:5.7 ports: - containerPort: 3306 env: - name: MYSQL_ROOT_PASSWORD value: "root" - name: MYSQL_DATABASE value: "nacos_devtest" - name: MYSQL_USER value: "nacos" - name: MYSQL_PASSWORD value: "nacos" volumeMounts: - name: mysql-persistent-storage mountPath: /var/lib/mysql subPath: mysql readOnly: false volumes: - name: mysql-persistent-storage persistentVolumeClaim: claimName: nacos-mysql-pvc --- apiVersion: v1 kind: Service metadata: name: mysql labels: name: mysql spec: ports: - port: 3306 targetPort: 3306 selector: name: mysql
kubectl apply -f pvc.yaml kubectl apply -f mysql.yaml -n nacos kubectl get pods -n nacos
期待 mysql pods running
$kubectl get pods -n nacos NAME READY STATUS RESTARTS AGE mysql-hhs5q 1/1 Running 0 3h51m
2. 进入 mysql 容器执行初始化脚本
kubectl exec -it mysql-hhs5q bash -n nacos mysql -uroot -p root ***** create database nacos_devtest; use nacos_devtest; ### 我是图省事,把这 sql 脚本外面间接复制进去搞了... https://github.com/alibaba/nacos/blob/develop/distribution/conf/nacos-mysql.sql ------- 退出 mysql 控制台,并退出容器 quit; exit
4. 部署 nacos
从 mysql 目录 cd ../nacos
cat nacos.yaml--- apiVersion: v1 kind: Service metadata: name: nacos-headless labels: app: nacos annotations: service.alpha.kubernetes.io/tolerate-unready-endpoints: "true" spec: ports: - port: 8848 name: server targetPort: 8848 - port: 7848 name: rpc targetPort: 7848 clusterIP: None selector: app: nacos --- apiVersion: v1 kind: ConfigMap metadata: name: nacos-cm data: mysql.db.name: "nacos_devtest" mysql.port: "3306" mysql.user: "nacos" mysql.password: "nacos" --- apiVersion: apps/v1 kind: StatefulSet metadata: name: nacos spec: serviceName: nacos-headless replicas: 3 template: metadata: labels: app: nacos annotations: pod.alpha.kubernetes.io/initialized: "true" spec: affinity: podAntiAffinity: requiredDuringSchedulingIgnoredDuringExecution: - labelSelector: matchExpressions: - key: "app" operator: In values: - nacos topologyKey: "kubernetes.io/hostname" initContainers: - name: peer-finder-plugin-install image: nacos/nacos-peer-finder-plugin:1.0 imagePullPolicy: Always volumeMounts: - mountPath: /home/nacos/plugins/peer-finder name: plguindir containers: - name: nacos imagePullPolicy: Always image: nacos/nacos-server:latest resources: requests: memory: "2Gi" cpu: "500m" ports: - containerPort: 8848 name: client-port - containerPort: 7848 name: rpc env: - name: NACOS_REPLICAS value: "2" - name: SERVICE_NAME value: "nacos-headless" - name: DOMAIN_NAME value: "layabox.daemon" - name: POD_NAMESPACE valueFrom: fieldRef: apiVersion: v1 fieldPath: metadata.namespace - name: MYSQL_SERVICE_DB_NAME valueFrom: configMapKeyRef: name: nacos-cm key: mysql.db.name - name: MYSQL_SERVICE_PORT valueFrom: configMapKeyRef: name: nacos-cm key: mysql.port - name: MYSQL_SERVICE_USER valueFrom: configMapKeyRef: name: nacos-cm key: mysql.user - name: MYSQL_SERVICE_PASSWORD valueFrom: configMapKeyRef: name: nacos-cm key: mysql.password - name: NACOS_SERVER_PORT value: "8848" - name: NACOS_APPLICATION_PORT value: "8848" - name: PREFER_HOST_MODE value: "hostname" volumeMounts: - name: plguindir mountPath: /home/nacos/plugins/peer-finder - name: datadir mountPath: /home/nacos/data - name: logdir mountPath: /home/nacos/logs volumeClaimTemplates: - metadata: name: plguindir spec: accessModes: ["ReadWriteOnce"] storageClassName: "cbs-csi" resources: requests: storage: 10Gi - metadata: name: datadir spec: accessModes: ["ReadWriteOnce"] storageClassName: "cbs-csi" resources: requests: storage: 10Gi - metadata: name: logdir spec: accessModes: ["ReadWriteOnce"] storageClassName: "cbs-csi" resources: requests: storage: 10Gi selector: matchLabels: app: nacos
次要就是批改了 storageclassName 为 cbs-csi。并批改了 accessmodes, 还有 DOMAIN_NAME 变量批改为本人命名的集群后缀. 简略 demo 不做具体阐述。
kubectl apply -f nacos.yaml -n nacos
期待服务 running
5. 对外裸露服务
代理集体应用的是 traefik。过来都是用 ingresroute 的形式对外映射裸露服务,当初用想 ingress 的形式:
cat ingress.yamlapiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: nacos-headless-http namespace: nacos annotations: kubernetes.io/ingress.class: traefik traefik.ingress.kubernetes.io/router.entrypoints: web spec: rules: - host: nacos-server.saynaihe.com http: paths: - pathType: Prefix path: / backend: service: name: nacos-headless port: number: 8848
kubectl apply -f ingress.yaml
拜访:https://nacos-server.layame.com/nacos 肯定记得域名前面跟上 nacos。否则是 404 呢,当然了也能够在 ingress 配置下面重定向间接到 nacos 下?看集体怎么玩了。
默认用户名明码:nacos nacos。当然了第一件事是批改明码 ……
嗯 先扔给程序去玩下了。还有很多配置的货色省略了。比方很多参数和变量,能够参照下官网配置进行搞一下 ……