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This article is about how to modify the storage directory of the image container in docker. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

By default, the default location for Docker images and containers is: / var/lib/docker

In general, we don't give too much under the root partition. There are more and more images and containers. Generally speaking, we have two solutions:

1. Mount a large partition to / var/lib/docker

Generally choose to establish a logical partition lvm to facilitate later expansion of the collective.

Create a new partition and format it

[root@localhost lib] # lvcreate-L 300G lv_docker vg_home [root@localhost lib] # mkfs.ext4 / dev/vg_home/lv__docker

Mount the new partition to the temporary mount point

[root@localhost lib] # mkdir / mnt/docker [root@localhost lib] # mount / dev/vg_home/lv_docker / mnt/docker/

After stopping the docker service, copy the data under / var/lib/docker to the temporary mount point

[root@localhost lib] # service docker stop [root@localhost lib] # cp-r / var/lib/docker/* / mtn/docker

Modify / var/lib/docker to / var/lib/docker.bak and create / var/lib/docker

[root@localhost lib] # mv / var/lib/docker {, .bak} [root@localhost lib] # mkdir / var/lib/docker

Mount the new partition to / var/lib/docker and set up auto-mount on boot

[root@localhost lib] # mount / dev/vg_home/lv_docker / var/lib/docker [root@localhost lib] # vim / etc/fstab--- / dev/vg_home/lv_docker / var/lib/docker ext4 defaults 00 Murray-

Start the Docker service and check whether the Docker service is available and whether the data is complete

[root@localhost lib] # / etc/init.d/docker start [root@localhost lib] # docker images [root@localhost lib] # docker ps-a

Unmount the temporary mount point after confirmation and delete / var/lib/docker.bak

[root@localhost lib] # umount / mnt/docker [root@localhost lib] # rm-rf / var/lib/docker.bak

two。 Modify the storage path of images and containers

Modify the parameters of the image and container storage path in the Docker service configuration file / etc/sysconfig/docker, and add:

Other_args= "--graph=/data/docker"

The specific implementation steps are as follows:

Stop the Docker service

[root@localhost lib] # service docker stop

Backup data to a new storage path

[root@localhost lib] # cp-rf / var/lib/docker / data/

Modify backup / var/lib/docker path

[root@localhost lib] # mv / var/lib/docker {, .bak}

Start the Docker service

[root@localhost lib] # service docker start

Test the Docker service

[root@localhost lib] # docker info Thank you for reading! This is the end of the article on "how to modify the storage directory of the image container in docker". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

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