kubernetes集群：nacos搭建

kubernetes集群：nacos搭建

根据官网搭建失败后（失败原因详细见https://www.cnblogs.com/zoujiaojiao/p/12558946.html）。参考http://www.fengzhihai.cn/2020/03/17/k8s-nacos/重新搭建了一遍。搭建k8s集群1个多月，一直在学习中。有不足的请看客指出。

文件说明

• custom.properties

server.servlet.contextPath=/nacos
server.port=8848
db.num=1
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
db.user=root
db.password=密码
management.metrics.export.elastic.enabled=false
management.metrics.export.influx.enabled=false
server.tomcat.accesslog.enabled=true
server.tomcat.accesslog.pattern=%h %l %u %t "%r" %s %b %D %{User-Agent}i
server.tomcat.basedir=
nacos.security.ignore.urls=/,/error,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/v1/auth/**,/v1/console/health/**,/actuator/**,/v1/console/server/**
nacos.core.auth.system.type=nacos
nacos.core.auth.enabled=true
nacos.core.auth.default.token.expire.seconds=18000
nacos.core.auth.default.token.secret.key=SecretKey012345678901234567890123456789012345678901234567890123456789
nacos.core.auth.caching.enabled=false
nacos.istio.mcp.server.enabled=false

• configmap.sh
  -n kube-ops 是命名空间。

kubectl create configmap custom.properties --from-file=./custom.properties -n kube-ops

生成配置：# sh configmap.sh

• nacos-pvc.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: nacos-pv
spec:
  capacity:
    storage: 50Gi
  accessModes:
  - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  nfs:
    server: 10.10.3.84   nfs服务器地址
    path: /data/nacos    nfs挂载的目录。一定要确保存在。

---

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: nacos-pvc
  namespace: kube-ops
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 50Gi

创建pv 和 pvc ：

# kubectl create -f nacos-pvc.yaml

查看：

# kubectl get pv -n kube-ops|grep nacos
# kubectl get pvc -n kube-ops|grep nacos

图片中，一部分pv是之前按照官网搭建时产生的。可以删除

删除方式：
确保pod都删除了。先删除pvc

# kubectl get pvc 
# kubectl delete pvc datadir-nacos-0

再删除pv

# kubectl delete pv pvc-04b58b4c-06c7-431b-a0cc-e6c624dc6b9f 

• nacos-deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nacos
  namespace: kube-ops
  labels:
    name: nacos
spec:
  selector:
    matchLabels:
      name: nacos
  template:
    metadata:
      name: nacos
      labels:
        name: nacos
    spec:
      containers:
      - name: nacos-mysql
        image: nacos/nacos-mysql:5.7
        imagePullPolicy: IfNotPresent
        env:
        - name: MYSQL_USER
          value: "root"
        - name: MYSQL_DATABASE
          value: "nacos"
        - name: MYSQL_ROOT_PASSWORD
          value: "密码"
        volumeMounts:
        - mountPath: /var/lib/mysql
          name: nacos-pv
          subPath: mysql
        ports:
        - containerPort: 3306
          name: "mysql-port"
      - name: nacos
        image: nacos/nacos-server:latest
        imagePullPolicy: Always
        name: nacos-server
        env:
        - name: "PREFER_HOST_MODE"
          value: "hostname"
        - name: "MODE"
          value: "standalone"
        - name: "SPRING_DATASOURCE_PLATFORM"
          value: "mysql"
        - name: "MYSQL_SERVICE_HOST"
          value: "mysql"
        - name: "MYSQL_SERVICE_DB_NAME"
          value: "nacos_devtest"
        - name: "MYSQL_SERVICE_PORT"
          value: "3306"
        - name: "MYSQL_SERVICE_USER"
          value: "root"
        - name: "MYSQL_SERVICE_PASSWORD"
          value: "nacos123"
        ports:
        - containerPort: 8848
          name: "nacos-port"
        volumeMounts:
        - mountPath: /home/nacos/logs
          name: nacos-pv
          subPath: logs
        - name: nacos-config
          mountPath: /home/nacos/init.d/custom.properties
          subPath: custom.properties
        - mountPath: /etc/localtime
          name: nacostime
      volumes:
      - name: nacos-pv
        persistentVolumeClaim:
          claimName: nacos-pvc
      - name: nacos-config
        configMap:
          name: custom.properties
      - name: nacostime
        hostPath:
          path: /etc/localtime

生成nacos的deployment

# kubectl create -f nacos-deployment.yaml 

查看pod:

# kubectl describe pods nacos-9b8479dd5-jlpsz  -n kube-ops

查看mysql pod的日志：

# kubectl logs nacos-9b8479dd5-jlpsz  nacos-mysql -n kube-ops

查看nacos pod的日志：

# kubectl logs nacos-9b8479dd5-jlpsz nacos-server -n kube-ops

• nacos-service.yaml

apiVersion: v1
kind: Service
metadata:
  name: nacos-service
  namespace: kube-ops
spec:
#  type: NodePort
  ports:
    - port: 3306
      targetPort: 3306
      name: "nacos-mysql-port"
    - port: 8848
      targetPort: 8848
      name: "nacos-port"
  selector:
    name: nacos

生成service

# kubectl create -f nacos-service.yaml

• nacos-ingress.yaml

---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
    nginx.ingress.kubernetes.io/proxy-body-size: "1024m"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "600"
    nginx.ingress.kubernetes.io/proxy-send-timeout: "600"
  name: nacos
  namespace: kube-ops
  annotations:
    kubernetes.io/ingress.class: "nginx"
spec:
  rules:
  - host: nacos.vonedao.com
    http:
      paths:
      - backend:
          serviceName: nacos-service
          servicePort: 8848

生成ingress:

# kubectl create -f nacos-ingress.yaml

验证

配置本地hosts。
访问http://nacos.vonedao.com/ 会报错。需要访问：http://nacos.vonedao.com/nacos