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nacos使用外部數(shù)據(jù)庫部署到k8s實(shí)踐

更新時(shí)間：2026年02月25日 08:50:00 作者：lv2

Nacos 是一個(gè)用于發(fā)現(xiàn)、配置和管理微服務(wù)的平臺,提供了一系列簡單易用的特性,幫助快速實(shí)現(xiàn)動態(tài)服務(wù)發(fā)現(xiàn)、服務(wù)配置、服務(wù)元數(shù)據(jù)及流量管理,通過簡單的安裝和部署,可以快速構(gòu)建、交付和管理微服務(wù)平臺

概覽

Nacos 致力于幫助您發(fā)現(xiàn)、配置和管理微服務(wù)。Nacos 提供了一組簡單易用的特性集，幫助您快速實(shí)現(xiàn)動態(tài)服務(wù)發(fā)現(xiàn)、服務(wù)配置、服務(wù)元數(shù)據(jù)及流量管理。

Nacos 幫助您更敏捷和容易地構(gòu)建、交付和管理微服務(wù)平臺。 Nacos 是構(gòu)建以“服務(wù)”為中心的現(xiàn)代應(yīng)用架構(gòu) (例如微服務(wù)范式、云原生范式) 的服務(wù)基礎(chǔ)設(shè)施。

簡單快速安裝方式

# clone項(xiàng)目
git clone https://github.com/nacos-group/nacos-k8s.git
# 快速開始，無Pvc，僅作示例
cd nacos-k8s
chmod +x quick-startup.sh
./quick-startup.sh

使用外部數(shù)據(jù)庫安裝方式

修改配置

部署文件為：修改 deploy/nacos/nacos-no-pvc.yaml
修改對應(yīng)的命名空間及數(shù)據(jù)庫配置

###使用自建數(shù)據(jù)庫；使用Ingress發(fā)布配置后臺###
---
apiVersion: v1
kind: Service
metadata:
  name: nacos-headless
  namespace: tools
  labels:
    app: nacos-headless
spec:
  type: ClusterIP
  clusterIP: None
  ports:
    - port: 8848
      name: server
      targetPort: 8848
    - port: 9848
      name: client-rpc
      targetPort: 9848
    - port: 9849
      name: raft-rpc
      targetPort: 9849
      ## 兼容1.4.x版本的選舉端口
    - port: 7848
      name: old-raft-rpc
      targetPort: 7848
  selector:
    app: nacos
---
# 修改以下數(shù)據(jù)庫配置
apiVersion: v1
kind: ConfigMap
metadata:
  name: nacos-cm
  namespace: tools
data:
  mysql.host: "192.168.1.4"
  mysql.db.name: "nacos"
  mysql.port: "3306"
  mysql.user: "nacos"
  mysql.password: "abc123456"
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: nacos
  namespace: tools
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"
      containers:
        - name: k8snacos
          imagePullPolicy: Always
          image: nacos/nacos-server:latest
          resources:
            limits:
              cpu: "2000m"
              memory: "4096Mi"
            requests:
              memory: "2Gi"
              cpu: "500m"
          ports:
            - containerPort: 8848
              name: client
            - containerPort: 9848
              name: client-rpc
            - containerPort: 9849
              name: raft-rpc
            - containerPort: 7848
              name: old-raft-rpc
          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: NACOS_SERVERS
              value: "nacos-0.nacos-headless.tools.svc.cluster.local:8848 nacos-1.nacos-headless.tools.svc.cluster.local:8848 nacos-2.nacos-headless.tools.svc.cluster.local:8848"
  selector:
    matchLabels:
      app: nacos

創(chuàng)建Nacos

kubectl create -f nacos-k8s/deploy/nacos/nacos-no-pvc.yaml

部署ingress

ingress及對應(yīng)service文件：nacos-service.yaml
初始默認(rèn)帳號密碼：nacos/nacos

apiVersion: v1
kind: Service
metadata:
  name: nacos
  namespace: tools
spec:
  ports:
    - port: 8848
      name: server
      targetPort: 8848
    - port: 9848
      name: client-rpc
      targetPort: 9848
    - port: 9849
      name: raft-rpc
      targetPort: 9849
    - port: 7848
      name: old-raft-rpc
      targetPort: 7848
  selector:
    app: nacos
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nacos
  namespace: tools
  annotations:
    kubernetes.io/ingress.class: nginx-ingress
spec:
  rules:
  - host:nacosbeta.abc.tech
    http:
      paths:
      - path: /
        backend:
          serviceName: nacos
          servicePort: 8848
  tls:
  - secretName: abc-tech

測試

# 服務(wù)注冊
curl -X PUT 'http://172.27.254.153:8848/nacos/v1/ns/instance?serviceName=nacos.naming.serviceName&ip=20.18.7.10&port=8080'

# 服務(wù)發(fā)現(xiàn)
curl -X GET 'http://172.27.254.153:8848/nacos/v1/ns/instance/list?serviceName=nacos.naming.serviceName'

# 發(fā)布配置
curl -X POST "http://172.27.254.153:8848/nacos/v1/cs/configs?dataId=nacos.cfg.dataId&group=test&content=helloWorld"

# 獲取配置
curl -X GET "http://172.27.254.153:8848/nacos/v1/cs/configs?dataId=nacos.cfg.dataId&group=test"