运行docker容器时如何自动启动服务？ [英] How to automatically start a service when running a docker container?

问题描述

我有一个 Dockerfile 在容器中安装MySQL服务器，然后我开始这样做：

  sudo docker运行-t -i 09d18b9a12be / bin / bash 
  
 服务mysql start 
  
如何自动启动MySQL服务当我运行docker容器时？
解决方案
 问题 
在你的 Dockerfile  
 运行服务mysql restart&& /tmp/setup.sh 
  
首先，docker图像不会对您正在运行的进程进行快照，您的 RUN 命令只在 docker build 阶段运行，您需要指定在容器开始使用 CMD 或 ENTRYPOINT 命令如下
  CMD mysql start 
  
其次Docker容器需要进程（最后一个命令）继续运行，否则容器将出口。因此，正常的服务mysql start 命令不能直接在Dockerfile中使用
 
 
 
 解决方案 ：为了保持这个过程的运行：
 
 
 
通常情况下，您的 Dockerfile有三种方式 
 
 
 
 
 
使用服务命令，并附加非终止命令，如 tail -F  
  CMD服务mysql start&& tail -F /var/log/mysql/error.log 
  
 
 
 
 
或使用foreground命令这样做
  CMD / usr / bin / mysqld_safe 
  
 
 
 
 
或将脚本包装到 start.sh 中，并将其结束
  CMD /start.sh 
  
 
 
 
 
 
 
对于已启动的用户，不建议使用 supervisord ，更好地为一个容器使用单一服务。
 
 
 
 BTW：请检查 https://registry.hub.docker.com 以查找现有的mysql docker图像参考
 
I have a Dockerfile to install MySQL server in a container, which I then start like this:
sudo docker run -t -i 09d18b9a12be /bin/bash
But the MySQL service does not start automatically, I have to manually run (from within the container):
service mysql start
How do I automatically start the MySQL service when I run the docker container?
解决方案
Problem
In your Dockerfile
RUN service mysql restart && /tmp/setup.sh
Firstly, docker images doesn't snapshot your running process, your RUN command just run during docker build phase, you need to specify the command to run when container started using CMD or ENTRYPOINT command like below
CMD mysql start
Secondly Docker container needs the process (last command) keep running, otherwise the container will exit. Therefore normal service mysql start command can't be used directly in Dockerfile

Solution: In order to keep the process running:

There are three ways for your Dockerfile normally


Using service command and append non-end command after that like tail -F
CMD service mysql start && tail -F /var/log/mysql/error.log

or use foreground command to do this
CMD /usr/bin/mysqld_safe

or wrap your scripts into start.sh and put this in end
CMD /start.sh



For started user, supervisord is not recommended, better to use single service for one container.

BTW: please check https://registry.hub.docker.com for existing mysql docker images for reference

                        
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