k8s安装mysql

summerking

发布于 2022-09-19 10:58:57

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发布于 2022-09-19 10:58:57

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# 大概步骤

创建一个新的namespace
在该namespace下创建一个deployment
deployment自动部署好replicaSet和pod
创建对应服务
验证是否成功

# 1.创建一个新的namespace

[root@master kmysql]# kubectl create namespace  summer
namespace/ summer created

# 2.在该namespace下创建一个deployment

（env中设置了mysql的root用户的密码）

[root@master kmysql]# cat mysql-deployment.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql-deployment
  namespace:  summer
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - name: mysql
        image: mysql:5.7
        imagePullPolicy: IfNotPresent
        args:
          - "--ignore-db-dir=lost+found"
        ports:
        - containerPort: 3306
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: "hadoop"

# kubectl create -f mysql-deployment.yaml --record

deployment自动部署好replicaSet和pod

[root@master kmysql]# kubectl get rs -n  summer
NAME                          DESIRED   CURRENT   READY   AGE
mysql-deployment-66bf8d5bf4   1         1         1       11s
[root@master kmysql]# kubectl get pod -n  summer
NAME                                READY   STATUS    RESTARTS   AGE
mysql-deployment-66bf8d5bf4-4rbq7   1/1     Running   0          33s

# 4.创建对应服务

（注意定义type=NodePort,并对应的nodeport端口号，以便集群外访问该服务）

[root@master kmysql]# cat mysql-svc.yaml 
apiVersion: v1
kind: Service
metadata:
  name: mysql-svc
  namespace:  summer
  labels:
    name: mysql-svc
spec:
  type: NodePort
  ports:
  - port: 3306
    protocol: TCP
    targetPort: 3306
    name: http
    nodePort: 30306
  selector:
    app: mysql

# kubectl create -f mysql-svc.yaml --record