导语：通过flyway的方式制作sql初始化的job

需要2个文件 Dockerfile、flyway-commandline-5.0.7.tar.gz

Dockerfile

FROM openjdk:8u151-jdk-alpine3.7

WORKDIR /flyway

ENV FLYWAY_VERSION 5.0.7
ENV TZ=Asia/Shanghai

RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

RUN apk update && apk add bash

COPY ./flyway-commandline-5.0.7.tar.gz /flyway

RUN tar -xzf flyway-commandline-${FLYWAY_VERSION}.tar.gz --strip-components=1 \
  && rm flyway-commandline-${FLYWAY_VERSION}.tar.gz \
  && ln -s /flyway/flyway /usr/local/bin/flyway

ENTRYPOINT ["/usr/local/bin/flyway"]
CMD ["-?"]

使用示例

  sql-migration:
    image: med-harbor.yitu-inc.com/default/sql-migration:latest
    container_name: your_container_name
    restart: on-failure
    depends_on:
      db:
        condition: service_healthy
    links:
      - db
    command: ['migrate', '-X']
    volumes:
      - ./migration_sql:/migrations # 将 sql 文件放在 ./migration_sql 
      - /etc/localtime:/etc/localtime
    environment:
      - FLYWAY_URL=jdbc:postgresql://db:5432/databasename?currentSchema=mammography # 配置下数据库名
      - FLYWAY_USER=mammo # 配置下数据库用户
      - FLYWAY_PASSWORD=mammo # 配置下数据库密码
      - FLYWAY_LOCATIONS=filesystem:/migrations
      - FLYWAY_VALIDATE_ON_MIGRATE=false

可以把sql的文件夹在dockerfile中加进去或者部署的时候挂载进去 。我这里选择了构建的时候创建，以便版本维护

FROM openjdk:8u151-jdk-alpine3.7

WORKDIR /flyway

ENV FLYWAY_VERSION 5.0.7
ENV TZ=Asia/Shanghai

RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

RUN apk update && apk add bash

COPY ./flyway-commandline-5.0.7.tar.gz /flyway
COPY ./migration_sql /migrations
RUN tar -xzf flyway-commandline-${FLYWAY_VERSION}.tar.gz --strip-components=1 \
  && rm flyway-commandline-${FLYWAY_VERSION}.tar.gz \
  && ln -s /flyway/flyway /usr/local/bin/flyway

ENTRYPOINT ["/usr/local/bin/flyway"]
CMD ["-?"]

sql-migration.yaml

apiVersion: batch/v1
kind: Job
metadata:
  name: sql-migration
spec:
  template:
    metadata:
      name: sql-migration
    spec:
      containers:
      - name: sql-migration
        image: harbor.deepwise.com/dev/sql-migration:test02
        command: ["sh","-c","/usr/local/bin/flyway migrate"]
        #command: ["/sbin/init"]
        env:
        - name: FLYWAY_URL
          value: "jdbc:mysql://mysql-headless:3306/terraapi?autoReconnect=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true&useSSL=false&createDatabaseIfNotExist=true"
          #value: "jdbc:mysql://mysql-headless:3306/terraapi?autoReconnect=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true&useSSL=false"
        - name: FLYWAY_USER
          value: root
        - name: FLYWAY_PASSWORD
          value: PASSWORD
        - name: FLYWAY_LOCATIONS
          value: filesystem:/migrations
        - name: FLYWAY_VALIDATE_ON_MIGRATE
          value: "false"
      restartPolicy: OnFailure

感觉比自己做一个执行sql的job方便了不少。sql一股脑往文件夹里扔就完事了。