Docker

Volume containers

Backup and restore

Backup data in a container

Using this method you can create backups outside your container of any data stored in a volume.

General command:

docker run -ti --rm --volumes-from <container_name> -v <host directory>:<container directory> ubuntu <backup command>

Examples:

#Docker registry backup
docker run -ti --rm --volumes-from registry_volume -v /scratch:/backup ubuntu tar-pczvf /backup/registry_data.tgz /etc/registry /srv/registry-data

#Nexus backup
docker run -ti --rm --volumes-from nexus_volume -v /scratch:/backup ubuntu tar -pczvf /backup/nexus_data.tgz /sonatype-work

#Nginx backup
docker run -ti --rm --volumes-from nginx_volume -v /scratch:/backup ubuntu tar -pczvf /backup/nginx_data.tgz /etc/nginx /usr/share/nginx/html /var/log/nginx

Restore data in a container