Sometimes, we forget to add the parameter -- restart=always when creating the container. When the Docker is restarted, the container fails to start automatically,
Now what about adding this parameter? There are two methods:
1. Docker command modification
docker container update --restart=always container name
2. Directly change the configuration file
Stop the container first, otherwise the configuration file cannot be modified
The configuration file path is: / var/lib/docker/containers / container ID
Find a file "hostconfig.json" in the directory, and find the keyword "RestartPolicy" in the file
Configuration before modification: "RestartPolicy":{"Name":"no","MaximumRetryCount":0}
Modified configuration: "RestartPolicy":{"Name":"always","MaximumRetryCount":0}
Finally, start the container.
Modify the mount path of docker container
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Stop all docker containers
sudo docker stop $(docker ps -a | awk '{ print $1}' | tail -n +2) -
Stop docker service
sudo service docker stop
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Modify mysql path
cd ~ sudo cp -r mysql/ /home/server/
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Backup container profile
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 configuration path of the Source 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
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Start all docker containers
sudo docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)
Modify the default storage location of docker
All images and related information of docker are stored in / var/lib/docker
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View the default docker storage path
docker info |grep 'Docker Root Dir' WARNING: No swap limit support Docker Root Dir: /var/lib/docker
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Stop all docker containers
sudo docker stop $(docker ps -a | awk '{ print $1}' | tail -n +2)
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Stop docker service
sudo service docker stop cd /var/lib
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Package docker directory
sudo tar -czvf /usr/docker.tar.gz docker/ cd /usr/ sudo tar -xzvf docker.tar.gz
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Modify the default storage location of docker
sudo vim /etc/docker/daemon.json { "graph": "/home/server/docker" } -
Start docker service
sudo service docker start
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Start all docker containers
sudo docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)
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View the modified docker storage path
docker info |grep 'Docker Root Dir' WARNING: No swap limit support Docker Root Dir: /usr/docker
