Docker-compose mysql：导入 .sql

Posted 2023-02-24

【中文标题】Docker-compose mysql：导入 .sql

【英文标题】：Docker-compose mysql: import .sql

【发布时间】：2017-06-27 11:25:56

【问题描述】：

我的 docker-compose 脚本成功运行 mysql/mariadb 服务，并将包含数据库架构的“init.sql”脚本复制到“/docker-entrypoint-initdb.d”。但是，sql 脚本永远不会像应有的那样执行according to the docs。

没有错误，日志中没有任何内容。我检查了 sql 文件是否复制到容器中的正确位置。我检查了脚本在空数据库上运行时没有错误。

我错过了什么？如果脚本被执行（并且由于某种原因什么也没做），它甚至在日志中可见吗？

（编辑： docker-compose 版本：1.8.1，图像 mariadb:10.1.21）

# docker-compose.yml

version: '2'
volumes:
  data-volume: 
services:
  mysql:
    image: mariadb
    ports:
      - "3306:3306"
    environment:
      MYSQL_ROOT_PASSWORD: pwd
      MYSQL_DATABASE: users_db
    volumes:
      - data-volume:/var/lib/mysql
      - ./resources/docker-sql/init.sql:/docker-entrypoint-initdb.d/init.sql
  backend:
    image: myapp
    ports:
      - "8000:80"
    depends_on:
      - mysql
    links:
      - mysql

【问题讨论】：

根据docker-entrypoint.sh 的来源（应该执行init.sql 的脚本），如果执行，日志中应该有一行（第154 行）。你能添加docker logs 的输出吗？此外，您的脚本只会在容器第一次启动时执行（第 76 行）！您必须在两次尝试之间删除它。

哦，我确实不得不删除容器。谢谢！ docker-compose stop, docker-compose rm, docker-compose up.

你们谁来写一个正式的答案？ :)

请注意，没有打印出与实际运行的 sql 脚本相关的日志。也许有一个详细的选项。但不再是问题了。如果@fzgregor 没有写出答案，我明天再写。

【参考方案1】：

查看 mariadb 图像的docker-entrypoint.sh 文件的来源，应该执行您的init.sql 的脚本，很明显

该脚本只会在容器之前不包含数据库时执行（脚本的第 76 行），并且 会有一个日志输出通知您调用了您的脚本。

要使用docker-compose 实现此目的，您必须停止服务，移除容器（以删除数据库）并重新启动它：

docker-compose stop
docker-compose rm
docker-compose start

这是图像行为的示例，仅使用.sh 文件而不是.sql：

$ cat hello.sh 
echo "This is output of the hello script"
$ docker run -it -v `pwd`/hello.sh:/docker-entrypoint-initdb.d/hello.sh -v mariadb_test:/var/lib/mysql -e MYSQL_RANDOM_ROOT_PASSWORD=1 mariadb   
Initializing database
2017-02-09 14:13:54 140617005938624 [Note] /usr/sbin/mysqld (mysqld 10.1.21-MariaDB-1~jessie) starting as process 63 ...
2017-02-09 14:13:54 140617005938624 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2017-02-09 14:13:54 140617005938624 [Note] InnoDB: The InnoDB memory heap is disabled
2017-02-09 14:13:54 140617005938624 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
[...]
2017-02-09 14:14:03 139836212086528 [Note] InnoDB: Dumping buffer pool(s) not yet started
2017-02-09 14:14:03 139836971521984 [Note] Plugin 'FEEDBACK' is disabled.
2017-02-09 14:14:03 139836971521984 [Warning] 'user' entry 'root@830dbd0908f3' ignored in --skip-name-resolve mode.
2017-02-09 14:14:03 139836971521984 [Warning] 'proxies_priv' entry '@% root@830dbd0908f3' ignored in --skip-name-resolve mode.
2017-02-09 14:14:03 139836971521984 [Note] mysqld: ready for connections.
Version: '10.1.21-MariaDB-1~jessie'  socket: '/var/run/mysqld/mysqld.sock'  port: 0  mariadb.org binary distribution
Warning: Unable to load '/usr/share/zoneinfo/leap-seconds.list' as time zone. Skipping it.
GENERATED ROOT PASSWORD: dau6voh4eej2jooRohpiop4eh6ahl7Uz
2017-02-09 14:14:05 139836970654464 [Warning] 'proxies_priv' entry '@% root@830dbd0908f3' ignored in --skip-name-resolve mode.

/usr/local/bin/docker-entrypoint.sh: running /docker-entrypoint-initdb.d/hello.sh
This is output of the hello script

2017-02-09 14:14:05 139836970351360 [Note] mysqld: Normal shutdown

2017-02-09 14:14:05 139836970351360 [Note] Event Scheduler: Purging the queue. 0 events
2017-02-09 14:14:05 139836195301120 [Note] InnoDB: FTS optimize thread exiting.
2017-02-09 14:14:05 139836970351360 [Note] InnoDB: Starting shutdown...
2017-02-09 14:14:05 139836970351360 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2017-02-09 14:14:07 139836970351360 [Note] InnoDB: Shutdown completed; log sequence number 1616829
2017-02-09 14:14:07 139836970351360 [Note] mysqld: Shutdown complete


MySQL init process done. Ready for start up.
[...]

您在日志输出中的某处看到hello.sh 脚本的调用及其标准输出被掩埋。在容器的后续启动中，脚本不会执行，因为数据库已经创建（在本地 mariadb 卷中）：

$ docker run -it -v `pwd`/hello.sh:/docker-entrypoint-initdb.d/hello.sh -v mariadb_test:/var/lib/mysql -e MYSQL_RANDOM_ROOT_PASSWORD=1 mariadb
2017-02-09 14:19:13 140155189532608 [Note] mysqld (mysqld 10.1.21-MariaDB-1~jessie) starting as process 1 ...
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: The InnoDB memory heap is disabled
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Compressed tables use zlib 1.2.8
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Using Linux native AIO
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Using SSE crc32 instructions
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Initializing buffer pool, size = 256.0M
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Completed initialization of buffer pool
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Highest supported file format is Barracuda.
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: 128 rollback segment(s) are active.
2017-02-09 14:19:13 140155189532608 [Note] InnoDB: Waiting for purge to start
2017-02-09 14:19:13 140155189532608 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.34-79.1 started; log sequence number 1616839
2017-02-09 14:19:13 140154429736704 [Note] InnoDB: Dumping buffer pool(s) not yet started
2017-02-09 14:19:13 140155189532608 [Note] Plugin 'FEEDBACK' is disabled.
2017-02-09 14:19:13 140155189532608 [Note] Server socket created on IP: '::'.
2017-02-09 14:19:13 140155189532608 [Warning] 'proxies_priv' entry '@% root@830dbd0908f3' ignored in --skip-name-resolve mode.
2017-02-09 14:19:13 140155189532608 [Note] mysqld: ready for connections.
Version: '10.1.21-MariaDB-1~jessie'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  mariadb.org binary distribution

【讨论】：

其他有问题的人，docker-compose stop docker-compose rm 命令非常关键，因为它们可以帮助您重新开始。否则您对撰写文件的更改可能不会生效。

@GideonMaina 您缺少 && 符号。 docker-compose stop && docker-compose rm。我用 docker-compose down && docker-compose up 为我工作。

【参考方案2】：

可能有点晚了，但我找到了另一个更准确的解决方案。

通过depends_on 和healthcheck，在mysql 转储完成之前不要运行后端。唯一的细节是您必须使用 2.1 版运行它。

# docker-compose.yml

version: '2.1'
volumes:
  data-volume: 
services:
  mysql:
    image: mariadb
    ports:
      - "3306:3306"
    environment:
      MYSQL_ROOT_PASSWORD: pwd
      MYSQL_DATABASE: users_db
    depends_on:
      backend:
        condition: service_healthy
    volumes:
      - data-volume:/var/lib/mysql
      - ./resources/docker-sql/init.sql:/docker-entrypoint-initdb.d/init.sql
  backend:
    image: myapp
    ports:
      - "8000:80"
    depends_on:
      - mysql
    links:
      - mysql
    healthcheck:
      test: "/usr/bin/mysql --user=root --password=you_pass --database=your_db --execute \"SELECT * FROM last_table_of_your_dump;\""
      interval: 10s
      timeout: 3s
      retries: 10