k8s部署nacos集群（外接mysql数据库）

1.首先部署mysql

version: "3"
services:
  mysql:
    restart: always
    container_name: mysql
    image: 'nacos/nacos-mysql:5.7' #使用的镜像
    restart: always
    volumes:
      - ${PWD}/mysql/mysql:/var/lib/mysql  #挂载目录，持久化存储
      - /etc/localtime:/etc/localtime:ro
    ports:
      - '3306:3306'
    environment:
      TZ: Asia/Shanghai
      MYSQL_ROOT_PASSWORD: ******   #设置root用户的密码
    user: root
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2.创建nacos名称空间

kubectl create ns nacos
#cat nacos.yaml

---
kind: StatefulSet
apiVersion: apps/v1
metadata:
  name: nacos
  namespace: nacos
  labels:
    k8s.kuboard.cn/name: nacos
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nacos
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: nacos
      annotations:
        pod.alpha.kubernetes.io/initialized: 'true'
    spec:
      containers:
        - name: k8snacos
          image: 'nacos/nacos-server:1.4.2'
          ports:
            - name: client
              containerPort: 8848
              protocol: TCP
            - name: client-rpc
              containerPort: 9848
              protocol: TCP
            - name: raft-rpc
              containerPort: 9849
              protocol: TCP
            - name: old-raft-rpc
              containerPort: 7848
              protocol: TCP
          env:
            - name: NACOS_REPLICAS
              value: '3'
            - name: MYSQL_SERVICE_HOST
              valueFrom:
                configMapKeyRef:
                  name: nacos-cm
                  key: mysql.host
            - 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: MODE
              value: cluster
            - name: NACOS_SERVER_PORT
              value: '8848'
            - name: PREFER_HOST_MODE
              value: hostname
            - name: MYSQL_SERVICE_DB_PARAM
              value: >-
                characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false
            - name: NACOS_SERVERS
              value: >-
                nacos-0.nacos-headless.nacos.svc.cluster.local:8848
                nacos-1.nacos-headless.nacos.svc.cluster.local:8848
                nacos-2.nacos-headless.nacos.svc.cluster.local:8848
          resources:
            limits:
              memory: 1Gi
            requests:
              cpu: 500m
              memory: 512Mi
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          imagePullPolicy: IfNotPresent
      restartPolicy: Always
      terminationGracePeriodSeconds: 30
      dnsPolicy: ClusterFirst
      securityContext: {}
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: app
                    operator: In
                    values:
                      - nacos
              topologyKey: kubernetes.io/hostname
      schedulerName: default-scheduler
  serviceName: nacos-headless
  podManagementPolicy: OrderedReady
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      partition: 0
  revisionHistoryLimit: 10

---
kind: Service
apiVersion: v1
metadata:
  name: nacos-headless
  namespace: nacos
  labels:
    app: nacos-headless
spec:
  ports:
    - name: server
      protocol: TCP
      port: 8848
      targetPort: 8848
    - name: client-rpc
      protocol: TCP
      port: 9848
      targetPort: 9848
    - name: raft-rpc
      protocol: TCP
      port: 9849
      targetPort: 9849
    - name: old-raft-rpc
      protocol: TCP
      port: 7848
      targetPort: 7848
  selector:
    app: nacos
  clusterIP: None
  clusterIPs:
    - None
  type: ClusterIP
  sessionAffinity: None

---
kind: Ingress
apiVersion: networking.k8s.io/v1
metadata:
  name: nacos
  namespace: nacos
  labels:
    k8s.kuboard.cn/name: nacos
spec:
  ingressClassName: nginx
  rules:
    - host: nacos-dev.sisensing.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: nacos-headless
                port:
                  number: 8848

---
kind: ConfigMap
apiVersion: v1
metadata:
  name: nacos-cm
  namespace: nacos
data:
  mysql.db.name: nacos_devtest
  mysql.host: 192.168.100.117
  mysql.password: ******
  mysql.port: '3306'
  mysql.user: nacos
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