中间件

使用 K8S 或 Docker 快速部署 Nacos集群

本文最后更新于 2024-11-11，距今已有 42 天，若文章内容或图片链接失效，请留言反馈。

前置条件

配置依赖

✨二进制部署任意版本docker✨

配置域名

address=/app-nacos1.basic.tanqidi.com/172.31.0.100
address=/app-nacos2.basic.tanqidi.com/172.31.0.101
address=/app-nacos3.basic.tanqidi.com/172.31.0.102

配置数据库

# 1. 创建数据库
CREATE DATABASE `nacosdb` CHARACTER SET 'utf8mb4' COLLATE 'utf8mb4_bin';

# 2. 导入sql
https://tanqidi.com/upload/nacos-mysql.sql

# 3. 创建账号与权限
CREATE USER `nacosdb`@`%` IDENTIFIED WITH mysql_native_password BY '123456';

GRANT Alter, Alter Routine, Create, Create Routine, Create Temporary Tables, Create View, Delete, Drop, Event, Execute, Index, Insert, Lock Tables, References, Select, Show View, Trigger, Update ON `nacosdb`.* TO `nacosdb`@`%`;

1. docker 部署

图片-nxks.png

# nacos-1, 运行在172.31.0.100
docker run -d \
  --name nacos-1 \
  -e MODE=cluster \
  -e PREFER_HOST_MODE=hostname \
  -e NACOS_SERVER_IP=app-nacos1.basic.tanqidi.com \
  -e NACOS_SERVERS="app-nacos1.basic.tanqidi.com:8848,app-nacos2.basic.tanqidi.com:8848,app-nacos3.basic.tanqidi.com:8848" \
  -e SPRING_DATASOURCE_PLATFORM=mysql \
  -e MYSQL_SERVICE_HOST=app-mysql1.basic.tanqidi.com \
  -e MYSQL_SERVICE_DB_NAME=nacosdb \
  -e MYSQL_SERVICE_USER=nacosdb \
  -e MYSQL_SERVICE_PASSWORD=123456 \
  -p 8848:8848 \
  -p 9848:9848 \
  -p 9849:9849 \
  -p 7848:7848 \
  --restart=always \
  nacos/nacos-server:v2.1.2

# nacos-2, 运行在172.31.0.101
docker run -d \
  --name nacos-2 \
  -e MODE=cluster \
  -e PREFER_HOST_MODE=hostname \
  -e NACOS_SERVER_IP=app-nacos2.basic.tanqidi.com \
  -e NACOS_SERVERS="app-nacos1.basic.tanqidi.com:8848,app-nacos2.basic.tanqidi.com:8848,app-nacos3.basic.tanqidi.com:8848" \
  -e SPRING_DATASOURCE_PLATFORM=mysql \
  -e MYSQL_SERVICE_HOST=app-mysql1.basic.tanqidi.com \
  -e MYSQL_SERVICE_DB_NAME=nacosdb \
  -e MYSQL_SERVICE_USER=nacosdb \
  -e MYSQL_SERVICE_PASSWORD=123456 \
  -p 8848:8848 \
  -p 9848:9848 \
  -p 9849:9849 \
  -p 7848:7848 \
  --restart=always \
  nacos/nacos-server:v2.1.2

# nacos-3, 运行在172.31.0.102
docker run -d \
  --name nacos-3 \
  -e MODE=cluster \
  -e PREFER_HOST_MODE=hostname \
  -e NACOS_SERVER_IP=app-nacos3.basic.tanqidi.com \
  -e NACOS_SERVERS="app-nacos1.basic.tanqidi.com:8848,app-nacos2.basic.tanqidi.com:8848,app-nacos3.basic.tanqidi.com:8848" \
  -e SPRING_DATASOURCE_PLATFORM=mysql \
  -e MYSQL_SERVICE_HOST=app-mysql1.basic.tanqidi.com \
  -e MYSQL_SERVICE_DB_NAME=nacosdb \
  -e MYSQL_SERVICE_USER=nacosdb \
  -e MYSQL_SERVICE_PASSWORD=123456 \
  -p 8848:8848 \
  -p 9848:9848 \
  -p 9849:9849 \
  -p 7848:7848 \
  --restart=always \
  nacos/nacos-server:v2.1.2

2. kubernetes 部署

图片-grmb.png

2.1 statefulset

kind: StatefulSet
apiVersion: apps/v1
metadata:
  name: nacos
  namespace: basic
  labels:
    app: nacos
  annotations:
    kubesphere.io/creator: admin
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nacos
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: nacos
      annotations:
        kubesphere.io/creator: admin
        kubesphere.io/imagepullsecrets: '{}'
        kubesphere.io/restartedAt: '2024-11-07T06:36:13.462Z'
    spec:
      volumes:
        - name: host-time
          hostPath:
            path: /etc/localtime
            type: ''
      containers:
        - name: nacos
          image: 'nacos/nacos-server:v2.1.2'
          ports:
            - name: http-8848
              containerPort: 8848
              protocol: TCP
            - name: http-9848
              containerPort: 9848
              protocol: TCP
            - name: http-9849
              containerPort: 9849
              protocol: TCP
            - name: http-7848
              containerPort: 7848
              protocol: TCP
          env:
            - name: MY_POD_NAME
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.name
            - name: nacos.inetutils.prefer-hostname-over-ip
              value: 'true'
            - name: nacos.inetutils.ip-address
              value: $(MY_POD_NAME).nacos.basic.svc.cluster.local
            - name: NACOS_MODE
              value: cluster
            - name: NACOS_SERVERS
              value: nacos-0.nacos.basic.svc.cluster.local:8848,nacos-1.nacos.basic.svc.cluster.local:8848,nacos-2.nacos.basic.svc.cluster.local:8848
            - name: SPRING_DATASOURCE_PLATFORM
              value: mysql
            - name: MYSQL_SERVICE_HOST
              value: app-mysql1.basic.tanqidi.com
            - name: MYSQL_SERVICE_DB_NAME
              value: nacosdb
            - name: MYSQL_SERVICE_USER
              value: nacosdb
            - name: MYSQL_SERVICE_PASSWORD
              value: '123456'
          resources: {}
          volumeMounts:
            - name: host-time
              readOnly: true
              mountPath: /etc/localtime
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          imagePullPolicy: IfNotPresent
      restartPolicy: Always
      terminationGracePeriodSeconds: 30
      dnsPolicy: ClusterFirst
      serviceAccountName: default
      serviceAccount: default
      securityContext: {}
      schedulerName: default-scheduler
  serviceName: nacos
  podManagementPolicy: OrderedReady
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      partition: 0
  revisionHistoryLimit: 10

2.2 service 内部

kind: Service
apiVersion: v1
metadata:
  name: nacos
  namespace: basic
  labels:
    app: nacos
  annotations:
    kubesphere.io/creator: admin
spec:
  ports:
    - name: http-8848
      protocol: TCP
      port: 8848
      targetPort: 8848
    - name: http-9848
      protocol: TCP
      port: 9848
      targetPort: 9848
    - name: http-9849
      protocol: TCP
      port: 9849
      targetPort: 9849
    - name: http-7848
      protocol: TCP
      port: 7848
      targetPort: 7848
  selector:
    app: nacos
  clusterIP: None
  clusterIPs:
    - None
  type: ClusterIP
  sessionAffinity: None
  ipFamilies:
    - IPv4
  ipFamilyPolicy: SingleStack
  internalTrafficPolicy: Cluster

2.3 service 外部

使用NodePort来试验访问

kind: Service
apiVersion: v1
metadata:
  name: nacos-external-http
  namespace: basic
  labels:
    app: nacos-external-http
  annotations:
    kubesphere.io/creator: admin
spec:
  ports:
    - name: http-8848
      protocol: TCP
      port: 8848
      targetPort: 8848
      nodePort: 32304
  selector:
    app: nacos
  type: NodePort
  sessionAffinity: None
  externalTrafficPolicy: Cluster
  ipFamilies:
    - IPv4
  ipFamilyPolicy: SingleStack
  internalTrafficPolicy: Cluster

2.4 coredns

rewrite name app-nacos1.basic.tanqidi.com nacos-0.nacos.basic.svc.cluster.local
rewrite name app-nacos2.basic.tanqidi.com nacos-1.nacos.basic.svc.cluster.local
rewrite name app-nacos3.basic.tanqidi.com nacos-2.nacos.basic.svc.cluster.local

3. 异常解决

3.1 下线异常

节点列表点击下线节点会出现错误还以为是搭建失败了，查看相关issure看到是功能不够完善没有开启，新的版本应该已经修复了吧？

https://developer.aliyun.com/ask/576495

https://github.com/alibaba/nacos/issues/9155
图片-ztuq.png

图片-iqyz.png

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nacos

使用 K8S 或 Docker 快速部署 Nacos集群

https://tanqidi.com/archives/bc70be98-2b20-44f3-bbe1-e9a3043dcd52

作者

世界哪有真情在

发布于

2024-11-06

更新于

2024-11-11

许可协议

CC BY 4.0

使用 K8S 或 Docker 快速部署 Nacos集群

前置条件

配置依赖

配置域名

配置数据库

1. docker 部署

2. kubernetes 部署

2.1 statefulset

2.2 service 内部

2.3 service 外部

2.4 coredns

3. 异常解决

3.1 下线异常

作者

发布于

更新于

许可协议

评论