Sometimes, we forgot to add parameters --restart=always when creating the container . When Docker restarts, the container fails to start automatically.
Now what if we want to add this parameter, there are two methods:
1. Docker command modification
docker container update --restart=always 容器名字
我实际运行时，可以支持同时配置多个容器id，比如（其中container关键字可以忽略不写）
docker update 87cd61ad7f7c f488b0479f24 2109903220ce 1fb346ea1a46 --restart=no2. Change the configuration file directly
First stop the container, otherwise you cannot modify the configuration file
The configuration file path is:/var/lib/docker/containers/容器ID
Find a file in the directory hostconfig.json , find the keyword in the file RestartPolicy
Configuration before modification:"RestartPolicy":{"Name":"no","MaximumRetryCount":0}
Modified configuration:"RestartPolicy":{"Name":"always","MaximumRetryCount":0}
Finally, start the container.
Modify the mounting path of the docker container
- Stop all docker containers
sudo docker stop $(docker ps -a | awk '{ print $1}' | tail -n +2) - Stop the docker service
sudo service docker stop - Modify mysql path
cd ~ sudo cp -r mysql/ /home/server/
- Back up container configuration files
cd /var/lib/docker/containers/de9c6501cdd3 cp hostconfig.json hostconfig.json.bak cp config.v2.json config.v2.json.bak
- Modify the configuration path before the colon of hostconfig
vi hostconfig.json "Binds": ["/home/server/mysql/conf/my.cnf:/etc/mysql/my.cnf", "/home/server/mysql/logs:/logs", "/home/server/mysql/data:/mysql_data"],
- Modify the source configuration path of config
vi config.v2.json "MountPoints": { "/etc/mysql/my.cnf": { "Source": "/home/server/mysql/conf/my.cnf", "Destination": "/etc/mysql/my.cnf", "RW": true, "Name": "", "Driver": "", "Relabel": "", "Propagation": "rprivate", "Named": false, "ID": "" }, "/logs": { "Source": "/home/server/mysql/logs", "Destination": "/logs", "RW": true, "Name": "", "Driver": "", "Relabel": "", "Propagation": "rprivate", "Named": false, "ID": "" }, "/mysql_data": { "Source": "/home/server/mysql/data", "Destination": "/mysql_data", "RW": true, "Name": "", "Driver": "", "Relabel": "", "Propagation": "rprivate", "Named": false, "ID": "" }, "/var/lib/mysql": { "Source": "", "Destination": "/var/lib/mysql", "RW": true, "Name": "85d91bff7012b57606af819480ce267449084e81ab386737c80ace9fe75f6621", "Driver": "local", "Relabel": "", "Propagation": "", "Named": false, "ID": "897cd0152dd152166cb2715044ca4a3915a1b66280e0eb096eb74c2d737d7f77" } },
- Start docker service
sudo service docker start
- Start all docker containers
sudo docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)
Modify the default storage location of docker
The storage location of all images and related information of docker is: / var / lib / docker
- View the default docker storage path
docker info |grep 'Docker Root Dir' WARNING: No swap limit support Docker Root Dir: /var/lib/docker
- Stop all docker containers
sudo docker stop $(docker ps -a | awk '{ print $1}' | tail -n +2)
- Stop the docker service
sudo service docker stop cd /var/lib
- Package docker directory
sudo tar -czvf /usr/docker.tar.gz docker/ cd /usr/ sudo tar -xzvf docker.tar.gz
- Modify the default storage location of docker
sudo vim /etc/docker/daemon.json { "graph": "/home/server/docker" } - Start docker service
sudo service docker start
- Start all docker containers
sudo docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)
- View the modified docker storage path
docker info |grep 'Docker Root Dir' WARNING: No swap limit support Docker Root Dir: /usr/docker
