Moodle Backup and Restore in Docker

Backup moodle & mariadb images to a folder

First, Run the docker commit container command this is just for copying the container image (where  moodle-moodle-1 & moodle-mariadb-1 is the name of the constainer try: "docker ps" to look for the name of that container you want to commit) :

1. # docker commit -p moodle-moodle-1 backup-moodle-moodle-1
   # docker commit -p moodle-mariadb-1 backup-moodle-mariadb-1

2. Alternatively, we can save it as a tar file in any directory and move it freely to any desired docker host system for a deployment:

   # docker save -o ~/backup-moodle-moodle-1.tar backup-moodle-moodle-1

# docker save -o ~/backup-moodle-mariadb-1.tar backup-moodle-mariadb-1

1. Backing up Docker volumes to a folder

2. # docker volume ls
3. Secondly , Backup the data in the docker volumes into a compressed file archive and save it to the local directory /tmp or any directory you want (just change only the /tmp to any directory you want) the mariadb_data, moodle_data, moodledata_data are the volumes so write according to the name of the volumes:

# docker run --rm -v mariadb_data:/bitnami/mariadb -v /tmp/:/backup ubuntu tar -czvf /backup/mysql-backup.tar.gz /bitnami/mariadb

# docker run --rm -v moodle_data:/bitnami/moodle -v /tmp/:/backup ubuntu tar -czvf /backup/moodle-backup.tar.gz /bitnami/moodle

# docker run --rm -v moodledata_data:/bitnami/moodledata -v /tmp/:/backup ubuntu tar -czvf /backup/moodle-data-backup.tar.gz /bitnami/moodledata

Restore moodle & mariadb (container + data volume)

First, load the image from the previous backup archive file so that the container can be created :

1. # docker load -i backup-moodle-moodle-1.tar

docker load -i backup-moodle-mariadb-1.tar

docker images

Second, restore the backup data volume from the archive file into a new Docker volume, create a new Docker volume, and then restore the data from the archive file into the newly created Docker volume :

# docker volume create moodle_mariadb_data
# docker volume create moodle_moodle_data
# docker volume create moodle_moodledata_data

# docker run --rm -v moodle_mariadb_data:/bitnami/mariadb -v /tmp:/backup ubuntu tar -xvzf /backup/mysql-backup.tar.gz -C /

# docker run --rm -v moodle_moodle_data:/bitnami/moodle -v /tmp:/backup ubuntu tar -xvzf /backup/moodle-backup.tar.gz -C /

# docker run --rm -v moodle_moodledata_data:/bitnami/moodledata -v /tmp:/backup ubuntu tar -xvzf /backup/moodle-data-backup.tar.gz -C /

Third, edit the Docker Compose file used at the beginning. Note that in this new Docker Compose file, we will be using the existing Docker volume that has been filled with data from the previous restoration process (Better to edit the old docker compose file and try to copy from the old and mix with this in order to run properly without errors)

version: '2' services: mbda_mariadb: image: backup-mariadb environment: # ALLOW_EMPTY_PASSWORD is recommended only for development. - ALLOW_EMPTY_PASSWORD=yes - MARIADB_USER=bn_moodle - MARIADB_DATABASE=bitnami_moodle - MARIADB_CHARACTER_SET=utf8mb4 - MARIADB_COLLATE=utf8mb4_unicode_ci volumes: - 'mariadb_data:/bitnami/mariadb' #ports: #- '3307:3306' mbda_moodle: image: backup-moodle ports: - '8000:8080' - '8001:8443' environment: - MOODLE_DATABASE_HOST=mbda_mariadb - MOODLE_DATABASE_PORT_NUMBER=3306 - MOODLE_DATABASE_USER=bn_moodle - MOODLE_DATABASE_NAME=bitnami_moodle # ALLOW_EMPTY_PASSWORD is recommended only for development. - ALLOW_EMPTY_PASSWORD=yes volumes: - 'moodle_data:/bitnami/moodle' - 'moodledata_data:/bitnami/moodledata' depends_on: - mbda_mariadb volumes: mariadb_data: external: true name: moodle_mariadb_data moodle_data: external: true name: moodle_moodle_data moodledata_data: external: true name: moodle_moodledata_data

Finally, we just need to run docker-compose up, then verify that the Moodle application is running and all the stored data is still intact.

Commands to Troubleshoot

Check for process all

docker ps -a

docker ps -a -f status=exited (to list all container that is stop)

To Stop/Remove a container

docker stop <container-name>

docker rm <container-name>

To check for Logs for a container (pass -f to not stop):

docker logs <container-name>

To check/remove/inspect for a network :

docker network ls

docker network rm <network-name>

docker network inspect <network-name>