Modify the running container port mapping

docker run When you create and run a container , Can pass -p Specify port mapping rules . however , We often encounter that we forget to set the port mapping at the beginning or need to modify it due to the wrong setting . When docker start Running the container does not provide a -p Options or settings , Let you modify the specified port mapping rules . So where should we go in this situation

Method 1 ： Delete the original container , Rebuild new containers

The solution is the simplest , Delete the original container , Build a new one . Of course, don't forget to add port mapping this time .

Advantages and disadvantages ： The advantage is simple and quick , It is used more in test environment . The disadvantage is that if it's database mirroring , Then rebuild one and reconfigure it again , It's a little bit more complicated .

Method 2 ： Modify container profile , restart docker service

 Profile path ：/var/lib/docker/containers/“ Press tab Key completion ”/hostconfig.json

notes ： Stop the container before modifying the configuration file
Modification steps ：（vim Open will be messy ）
1、vim /var/lib/docker/containers/“ Press tab Key completion ”/hostconfig.json
2、/HostPort Find this place to modify
3、 Save and exit
4、 Restart the service systemctl restart docker

Advantages and disadvantages ： The advantage of this method is that there are no side effects , It's easy to operate . The disadvantage is that you need to restart the whole docker service , If there are multiple container services running on the same host , It will affect other container services .

Method 3 ： utilize docker commit New mirror image

docker commit： Change the file and configuration information of a container commit To a new mirror . This will be very useful when testing , Import all the file changes and configuration information of the container into a new docker Mirror image , Then use the new image to restart a container , This has no effect on the previous container .

Advantages and disadvantages ： The advantage of this approach is that it does not affect other containers on the unified host , The disadvantage is that the management is chaotic , Not as intuitive as the second method .

docker commit course ：https://blog.csdn.net/Virgo626249038/article/details/119254784?spm=1001.2014.3001.5501

This article is from 《docker The Chinese community 》 I'll add some content by myself , This article is used for record keeping .
Original text ：https://mp.weixin.qq.com/s/9omcc2rq7_nmQnoI3TZpVg