kubernetes集群部署sql server数据库服务

news2024/9/21 10:43:13

背景：

因业务上线需要，研发中心要求在kubernetes测试集群部署一个sql server 2017的数据库，用于业务功能调试。

一、实施部署sql server数据库：

1、拉取sql server 2017的镜像：

[root@harbor-02 ~]# docker pull mcr.microsoft.com/mssql/server:2017-latest
2017-latest: Pulling from mssql/server
699451820735: Pull complete 
861e6e6e8e5e: Pull complete 
4403d783b046: Pull complete 
Digest: sha256:3b913841850a4d57fcfcb798be06acc88ea0f2acc5418bc0c140a43e91c4a545
Status: Downloaded newer image for mcr.microsoft.com/mssql/server:2017-latest

2、上传sql server 2017镜像到私库：

先tag处理一下。

[root@harbor-02 ~]# docker tag mcr.microsoft.com/mssql/server:2017-latest dockerhub.jiang.com/jiang-public/sqlserver:2017-latest

再上传到私有harbor库，

[root@harbor-02 ~]# docker push dockerhub.jiang.com/jiang-public/sqlserver:2017-latest
The push refers to repository [dockerhub.jiang.com/jiang-public/sqlserver]
fdfec26b634f: Pushed 
ef3ecb9d5e46: Pushed 
548a79621a42: Pushed 
2017-latest: digest: sha256:ff8a63a2c900cf3201b948526dff804db58fbeaed83287c94edd3b3359708854 size: 954

3、创建PersistentVolume、PersistentVolumeClaim存储：

因kubernetes集群环境是对接了hpe（华三）的iscsi存储，所以直接通过stoageclass创建pvc存储即可。不过这里会展示pv、pvc存储的yml配置内容。

pvc存储yml配置：

apiVersion: storage.k8s.io/v1
kind: PersistentVolumeClaim
metadata:
  name: sqlserver-db-pvc
  namespace: main-data-test
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: hpe-san
  volumeMode: Filesystem

pv存储的yml配置：

apiVersion: v1
kind: PersistentVolume
metadata:
  annotations:
    pv.kubernetes.io/provisioned-by: csi.hpe.com
  finalizers:
  - kubernetes.io/pv-protection
  - external-attacher/csi-hpe-com
  name: pvc-3361b2d3-7c05-4e38-8533-6a14a9a891f1
spec:
  accessModes:
  - ReadWriteOnce
  capacity:
    storage: 10Gi
  claimRef:
    apiVersion: v1
    kind: PersistentVolumeClaim
    name: sqlserver-db-pvc
    namespace: main-data-test
  csi:
    controllerExpandSecretRef:
      name: hpe-backend
      namespace: hpe-storage
    controllerPublishSecretRef:
      name: hpe-backend
      namespace: hpe-storage
    driver: csi.hpe.com
    fsType: xfs
    nodePublishSecretRef:
      name: hpe-backend
      namespace: hpe-storage
    nodeStageSecretRef:
      name: hpe-backend
      namespace: hpe-storage
    volumeAttributes:
      accessProtocol: iscsi
      allowOverrides: cpg,provisioningType
      compression: "false"
      cpg: SSD_r6
      description: Volume provisioned by the HPE CSI Driver
      fsType: xfs
      hostEncryption: "false"
      hostSeesVLUN: "true"
      provisioningType: tpvv
      snapCpg: SSD_r6
      storage.kubernetes.io/csiProvisionerIdentity: 1723080244247-8081-csi.hpe.com
      volumeAccessMode: mount
    volumeHandle: pvc-3361b2d3-7c05-4e38-8533-6a14a9a891f1
  persistentVolumeReclaimPolicy: Delete
  storageClassName: hpe-san
  volumeMode: Filesystem

4、创建无状态的sql server数据库：

这里的无状态就是deployment控制器的配置。

kind: Deployment
metadata:
  name: sqlserver-db-auuqd
  namespace: main-data-test
  generation: 1
  labels:
    app: sqlserver-db-auuqd
    name: sqlserver-db
    version: '2017'
spec:
  replicas: 1
  selector:
    matchLabels:
      app: sqlserver-db-auuqd
      name: sqlserver-db
  template:
    metadata:
      labels:
        app: sqlserver-db-auuqd
        name: sqlserver-db
        version: '2017'
    spec:
      volumes:
        - name: sqlserver-db-pvc
          persistentVolumeClaim:
            claimName: sqlserver-db-pvc
      containers:
        - name: sqlserver
          image: 'dockerhub.jiang.com/jiang-public/sqlserver:2017-latest'
          ports:
            - containerPort: 1433
              protocol: TCP
          env:
            - name: ACCEPT_EULA
              value: 'Y'
            - name: SA_PASSWORD
              value: mdm@1234
          resources:
            limits:
              cpu: '2'
              memory: 4Gi
            requests:
              cpu: '1'
              memory: 1Gi
          volumeMounts:
            - name: sqlserver-db-pvc
              mountPath: /var/opt/mssql
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          imagePullPolicy: IfNotPresent
          securityContext:
            privileged: false
      restartPolicy: Always
      terminationGracePeriodSeconds: 30
      dnsPolicy: ClusterFirst
      serviceAccountName: default
      serviceAccount: default
      securityContext: {}
  strategy:
    type: Recreate
  minReadySeconds: 10
  revisionHistoryLimit: 10
  progressDeadlineSeconds: 600

注：这里需要修改的内容主要如下：

1、volumes存储的声明：

2、volumeMounts:存储的挂载

3、env：环境变量的声明

- name: ACCEPT_EULA（表示接受最终用户协议）
value: 'Y'
- name: SA_PASSWORD（sa用户的密码）
value: mdm@1234

4、ports：端口的声明

这里默认的是1433

5、创建servcie控制器配置，对外提供访问：

sql server数据库需要对外提供服务，需要配置service控制器。

kind: Service
metadata:
  name: sqlserver-db
  namespace: main-data-test
  labels:
    name: sqlserver-db
    system/appName: master-data-base
spec:
  ports:
    - name: tcp-port-0
      protocol: TCP
      port: 1433
      targetPort: 1433
  selector:
    name: sqlserver-db
  clusterIP: 172.32.60.172
  type: ClusterIP
  sessionAffinity: None