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Output 的 Dockerfile 不等于 output 的相同命令在容器内运行

[英]Output of Dockerfile not equal to output of same commands run inside container

 原文  2019-09-18 23:15:57  1   1    mysql/ docker

问题描述

I'm confused about some behavior in Docker.我对 Docker 中的某些行为感到困惑。 I have a minimal Dockerfile running on an OSX host:我有一个最小的 Dockerfile 在 OSX 主机上运行：

FROM ubuntu:16.04

RUN apt-get update -y && \
  apt-get upgrade -y && \
  apt-get install -y gcc \
  build-essential \
  libmysqlclient-dev

RUN \
  echo mysql-server mysql-server/root_password password womp | debconf-set-selections && \
  echo mysql-server mysql-server/root_password_again password womp | debconf-set-selections && \
    apt-get -y install mysql-server

I build this image with:我使用以下方法构建此图像：

docker build --tag wonk --file Dockerfile .

Then I create a container for this image via:然后我通过以下方式为此图像创建一个容器：

docker run -dit wonk

Then I find the container's id:然后我找到容器的 id：

docker ps -a

And use that to drop a shell inside the container:并使用它在容器内放置 shell ：

docker exec -it {{ CONTAINER_ID }} /bin/bash

If I then try to start the mysql server from inside the client:如果我尝试从客户端内部启动 mysql 服务器：

/etc/init.d/mysql start

but this fails.但这失败了。

However , if I remove the entire second RUN command from my docker file, repeat the steps above, and then run the second RUN command inside the container, I'm able to start mysql.但是，如果我从 docker 文件中删除整个第二个 RUN 命令，重复上述步骤，然后在容器内运行第二个 RUN 命令，我就可以启动 mysql。

Does anyone know why this would be the case?有谁知道为什么会这样？ Any suggestions would be very helpful!任何建议都会非常有帮助！

EDIT: In fact while the version of mysql is identical in the two containers described above, the one that installs mysql-server in the Dockerfile ends up with directories /var/lib/mysql and /var/run/mysqld , but those directories are not present in the container wherein I install mysql-server from inside the container.编辑：事实上，虽然 mysql 的版本在上述两个容器中是相同的，但在 Dockerfile 中安装 mysql-server 的容器最终会得到目录/var/lib/mysql和/var/run/mysqld ，但这些目录是不存在于我从容器内部安装 mysql-server 的容器中。 Why would that be?为什么会这样？

Contents of /var/log/mysql/error.log /var/log/mysql/error.log 的内容

2019-09-18T23:39:50.957874Z mysqld_safe Logging to '/var/log/mysql/error.log'.
2019-09-18T23:39:50.981668Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2019-09-18T23:39:51.162825Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2019-09-18T23:39:51.164124Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.27-0ubuntu0.16.04.1) starting as process 3456 ...
2019-09-18T23:39:51.168209Z 0 [Note] InnoDB: PUNCH HOLE support available
2019-09-18T23:39:51.168258Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2019-09-18T23:39:51.168289Z 0 [Note] InnoDB: Uses event mutexes
2019-09-18T23:39:51.168319Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2019-09-18T23:39:51.168349Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.8
2019-09-18T23:39:51.168378Z 0 [Note] InnoDB: Using Linux native AIO
2019-09-18T23:39:51.168600Z 0 [Note] InnoDB: Number of pools: 1
2019-09-18T23:39:51.168719Z 0 [Note] InnoDB: Using CPU crc32 instructions
2019-09-18T23:39:51.169949Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2019-09-18T23:39:51.178954Z 0 [Note] InnoDB: Completed initialization of buffer pool
2019-09-18T23:39:51.181161Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2019-09-18T23:39:51.194860Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2019-09-18T23:39:51.216975Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-09-18T23:39:51.217101Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-09-18T23:39:51.285152Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2019-09-18T23:39:51.287382Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2019-09-18T23:39:51.287434Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2019-09-18T23:39:51.288015Z 0 [Note] InnoDB: Waiting for purge to start
2019-09-18T23:39:51.339200Z 0 [Note] InnoDB: 5.7.27 started; log sequence number 2625955
2019-09-18T23:39:51.340684Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool
2019-09-18T23:39:51.340844Z 0 [Note] Plugin 'FEDERATED' is disabled.
2019-09-18T23:39:51.343146Z 0 [Note] InnoDB: Buffer pool(s) load completed at 190918 23:39:51
2019-09-18T23:39:51.346475Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key
2019-09-18T23:39:51.346536Z 0 [Note] Server hostname (bind-address): '127.0.0.1'; port: 3306
2019-09-18T23:39:51.346580Z 0 [Note]   - '127.0.0.1' resolves to '127.0.0.1';
2019-09-18T23:39:51.346631Z 0 [Note] Server socket created on IP: '127.0.0.1'.
2019-09-18T23:39:51.353776Z 0 [ERROR] Fatal error: Can't open and lock privilege tables: Table storage engine for 'proxies_priv' doesn't have this option
2019-09-18T23:39:51.353845Z 0 [ERROR] Fatal error: Failed to initialize ACL/grant/time zones structures or failed to remove temporary table files.
2019-09-18T23:39:51.353946Z 0 [ERROR] Aborting

2019-09-18T23:39:51.354042Z 0 [Note] Binlog end
2019-09-18T23:39:51.354162Z 0 [Note] Shutting down plugin 'ngram'
2019-09-18T23:39:51.354209Z 0 [Note] Shutting down plugin 'partition'
2019-09-18T23:39:51.354246Z 0 [Note] Shutting down plugin 'BLACKHOLE'
2019-09-18T23:39:51.354283Z 0 [Note] Shutting down plugin 'ARCHIVE'
2019-09-18T23:39:51.354318Z 0 [Note] Shutting down plugin 'INNODB_SYS_VIRTUAL'
2019-09-18T23:39:51.354355Z 0 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2019-09-18T23:39:51.354390Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2019-09-18T23:39:51.354425Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2019-09-18T23:39:51.354461Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2019-09-18T23:39:51.354496Z 0 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2019-09-18T23:39:51.354531Z 0 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2019-09-18T23:39:51.354574Z 0 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2019-09-18T23:39:51.354612Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2019-09-18T23:39:51.354647Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2019-09-18T23:39:51.354683Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2019-09-18T23:39:51.354718Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2019-09-18T23:39:51.354753Z 0 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2019-09-18T23:39:51.354788Z 0 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2019-09-18T23:39:51.354823Z 0 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2019-09-18T23:39:51.354859Z 0 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2019-09-18T23:39:51.354897Z 0 [Note] Shutting down plugin 'INNODB_METRICS'
2019-09-18T23:39:51.354933Z 0 [Note] Shutting down plugin 'INNODB_TEMP_TABLE_INFO'
2019-09-18T23:39:51.354968Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2019-09-18T23:39:51.355003Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2019-09-18T23:39:51.355039Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2019-09-18T23:39:51.355074Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2019-09-18T23:39:51.355109Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2019-09-18T23:39:51.355145Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2019-09-18T23:39:51.355180Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM'
2019-09-18T23:39:51.355215Z 0 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2019-09-18T23:39:51.355251Z 0 [Note] Shutting down plugin 'INNODB_CMP'
2019-09-18T23:39:51.355286Z 0 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2019-09-18T23:39:51.355321Z 0 [Note] Shutting down plugin 'INNODB_LOCKS'
2019-09-18T23:39:51.355357Z 0 [Note] Shutting down plugin 'INNODB_TRX'
2019-09-18T23:39:51.355392Z 0 [Note] Shutting down plugin 'InnoDB'
2019-09-18T23:39:51.355583Z 0 [Note] InnoDB: FTS optimize thread exiting.
2019-09-18T23:39:51.355914Z 0 [Note] InnoDB: Starting shutdown...
2019-09-18T23:39:51.462147Z 0 [Note] InnoDB: Dumping buffer pool(s) to /var/lib/mysql/ib_buffer_pool
2019-09-18T23:39:51.462633Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 190918 23:39:51
2019-09-18T23:39:52.922232Z 0 [Note] InnoDB: Shutdown completed; log sequence number 2625974
2019-09-18T23:39:52.925597Z 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-09-18T23:39:52.925658Z 0 [Note] Shutting down plugin 'MRG_MYISAM'
2019-09-18T23:39:52.925694Z 0 [Note] Shutting down plugin 'MEMORY'
2019-09-18T23:39:52.925728Z 0 [Note] Shutting down plugin 'CSV'
2019-09-18T23:39:52.925763Z 0 [Note] Shutting down plugin 'MyISAM'
2019-09-18T23:39:52.925800Z 0 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2019-09-18T23:39:52.925902Z 0 [Note] Shutting down plugin 'sha256_password'
2019-09-18T23:39:52.925936Z 0 [Note] Shutting down plugin 'mysql_native_password'
2019-09-18T23:39:52.926081Z 0 [Note] Shutting down plugin 'binlog'
2019-09-18T23:39:52.926560Z 0 [Note] /usr/sbin/mysqld: Shutdown complete

2019-09-18T23:39:53.037681Z mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

1 个解决方案

解决方案1
 0  2019-09-19 00:09:57

It seems to be a privilege issue.这似乎是一个特权问题。 Can you create an image again?你能再创建一个图像吗？ I've optimized you Dockerfile a bit:)我已经优化了你 Dockerfile 一点:)

FROM ubuntu:16.04

RUN apt-get update -y && \
  apt-get upgrade -y && \
  apt-get install -y gcc \
  build-essential \
  libmysqlclient-dev && \
  echo mysql-server mysql-server/root_password password womp | debconf-set-selections && \
  echo mysql-server mysql-server/root_password_again password womp | debconf-set-selections && \
    apt-get -y install mysql-server

RUN chown -R mysql:mysql /var/lib/mysql /var/run/mysqld && \
    service mysql start

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