如何通过简单的 script.sql 初始化通过 Kubernetes mysql-operator 创建的 InnoDB Cluster

Question

我已经在 Kubernetes 中成功部署了InnoDB Clustervia mysql-operator，并且还设置了计划备份。我还可以通过 InnoDB 创建的相同备份来初始化数据库。

但是，我无法找到通过导入由简单脚本定义的简单逻辑备份来首次初始化数据库.sql的方法。

是否可以通过 mysql-operator 或 InnoDB kubernetes 清单来实现？可能的替代方案？

相关文档：

• 运算符参考架构：https://dev.mysql.com/doc/mysql-operator/en/mysql-operator-properties.html
• 转储文档：https://dev.mysql.com/doc/mysql-shell/8.0/en/mysql-shell-utilities-dump-instance-schema.html
• 负载转储文档：https://dev.mysql.com/doc/mysql-shell/8.0/en/mysql-shell-utilities-load-dump.html

InnoDBCluster 清单：

apiVersion: mysql.oracle.com/v2
kind: InnoDBCluster
metadata:
  name: mysql-cluster
  namespace: cr-platform
spec:
  secretName: mysql-root-user
  instances: 2
  tlsUseSelfSigned: true
  router:
    instances: 1
  backupSchedules:
    - name: daily-2300
      enabled: true
      schedule: "0 23 * * *"
      backupProfileName: s3-backup
  backupProfiles:
    - name: s3-backup
      dumpInstance:
        dumpOptions:
          chunking: false
        storage:
          s3:
            bucketName: al-mysql
            prefix: /backup
            config: s3-secret
            profile: default
            endpoint: https://s3-endpoint
  ## Restore from InnoDB dump but not from .sql script
  initDB:
    dump:
      dumpOptions:
        dryRun: false
      storage:
        # backup
        s3:
          bucketName: al-mysql
          prefix: /init
          config: s3-secret
          profile: default
          endpoint: https://s3-endpoint

Answer 1

我发现的方法是执行 mysql 客户端 pod，进行登录，然后导入 sql 脚本。

# 1. deploy mysql-client
apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql-init
data:
  1-init.sql:
    # YOUR SQL INIT SCRIPT HERE
---
apiVersion: v1
kind: Pod
metadata:
  name: mysql-client
spec:
  containers:
  - name: mysql
    image: mysql:8.0
    ports:
    - containerPort: 80
    env:
    - name: MYSQL_ALLOW_EMPTY_PASSWORD
      value: "true"
    volumeMounts:
      - name: config-volume
        mountPath: /init/
  volumes:
    - name: config-volume
      configMap:
        # Provide the name of the ConfigMap containing the files you want
        # to add to the container
        name: mysql-init



# 2. run the import:
# enter the shell for the client pod and run the following commands by substituting:
# <MYSQL-SERVER-HOST> with the service name exposing the mysql-cluster on kubernetes cluster and <USER>/<PASSWORD> credentials with the ones defined as kubernetes secret in the mysql-cluster namespace


mysql -h <MYSQL-SERVER-HOST> -u<USER> -p<PASSWORD> -e 'SHOW databases;'
mysql -h <MYSQL-SERVER-HOST> -u<USER> -p<PASSWORD> < init/1-init.sql