Backup volumes of docker-compose services

backup_volumes_of_docker_compose_services.txt

THIS SOLUTION ASSUMES THAT YOUR service container has tar installed and to be able to be used! 


latest update: 
i wrote 2 commands onmy .bash_profile: 

checkvol <DOCKER_COMPOSE_SERVICE_NAME>
checkvol gitea

dockerbackup <DOCKER_COMPOSE_SERVICE_NAME> <DIR_TO_COPY> <FILENAME_TO_COMPRESS>
dockerbackup gitea /var/lib/gitea var-lib-gitea-backup.tar.gz

i'll post working ones later.



-- get container id of a docker compose service by service name:
$ docker-compose ps -q your-service-name

#docker compose volume destinations list for a given service name (i.e: gitea)
#when you have a configuration like this: 
#... example of gitea service in a docker-compose.yaml file
#  volumes: 
#    - ./gitea-data:/var/lib/gitea
#    - ./gitea-config:/etc/gitea
#...
#this command will give you the output of the volume paths for example: 
#/var/lib/gitea /etc/gitea
$ sudo docker inspect -f '{{range .Mounts}}{{.Destination}} {{end}}' $(sudo docker-compose -f <YOUR_DIR>/docker-compose.yaml ps -q gitea)

// for me (my aliases helped me)
$ sudo docker inspect -f '{{range .Mounts}}{{.Destination}} {{end}}' $(dc ps -q gitea)

# then you can just back them up these directories one by one like this!
# your /var/lib/gitea will be compressed to var-lib-gitea-backup.tar.gz file!
$ cd <YOUR_BACKUP_DIR>
$ dc run --rm -v $(pwd):/backup gitea tar -czvf /backup/var-lib-gitea-backup.tar.gz /var/lib/gitea
and 
# your /etc/gitea will be compressed to etc-gitea-backup.tar.gz file!
$ cd <YOUR_BACKUP_DIR>
$ dc run --rm -v $(pwd):/backup gitea tar -czvf /backup/etc-gitea-backup.tar.gz /etc/gitea

cheers!