dockerHow to backup docker volume
We backup data volume from running container by creating second temporary container and making tar archive from what's inside the volume.
docker run -it --mount source=data,destination=/data ubuntu
docker run --rm --volumes-from 804e9d6977ba -v /tmp/data:/backup ubuntu tar czvf /backup/backup.tar.gz /datactrl + cdocker runrun specified image | -itinstantly connects to container command line |
--mountmounts specified volume | source=dataname of the volume to mount ( |
destination=/datapath that the volume will be available from the container | --rmremove container automatically after it stopped (used for backup container only) |
--volumes-fromspecify which container to mount volumes from (assume we have running containers to backup from) | 804e9d6977baid of our first container (to backup volume from) |
-vmount directory for container | /tmp/data:/backupmake local |
tar czvfcreates gzip acrhive | /backup/backup.tar.gzname of the backup file |
/datawhich directory to create gzip from ( | |
Usage example
docker run -it --mount source=data,destination=/data ubuntu
docker run --rm --volumes-from 804e9d6977ba -v /tmp/data:/backup ubuntu tar czvf /backup/backup.tar.gz /data
ls /tmp/dataoutput
tar: Removing leading `/' from member names
/data/
/data/hello.txt
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