Disaster Recovery Test [Nextcloud]

[veerendra2]

Disaster Recovery Test [Nextcloud]

[veerendra2]

• https://github.com/ReinerNippes/nextcloud

[veerendra2]

• https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html
• https://github.com/ReinerNippes/nextcloud/blob/master/roles/restic_backup/templates/backup_nextcloud.sh.j2

[veerendra2]

CRONTAB metrics into Prometheus -> https://www.robustperception.io/using-the-textfile-collector-from-a-shell-script/
Created -> https://gist.github.com/veerendra2/462264542e3de75b4ffbed7bba8a41b3

[veerendra2]

• Moved nextcloud data directory to disk to test

[veerendra2]

veerendra@atom:~$ docker exec -it -u www-data nextcloud php occ maintenance:mode --on
An unhandled exception has been thrown:
RedisException: NOAUTH Authentication required. in /var/www/html/lib/private/Memcache/Redis.php:48
...

[veerendra2]

Intersting tool: duplicati

• https://hub.docker.com/r/linuxserver/duplicati
• https://docs.linuxserver.io/images/docker-duplicati

[veerendra2]

Backup

docker exec postgres \
      bash -c 'pg_dump -c -U `cat $POSTGRES_USER_FILE` -Fc `cat $POSTGRES_DB_FILE`' > test.dump

Restore

docker exec -i postgres \
    bash -c 'pg_restore -c -U `cat $POSTGRES_USER_FILE` -d `cat $POSTGRES_DB_FILE` -v' < test.dump

[veerendra2]

Restoring database is not working, some roles, indexes, etc are missing.

Tested below procedure. Simple directory backup and restore

Backup

• Set maintenance or docker-compose down
• Copy nextcloud directory from production to backup disk
• Copy postgres directory from production to backup disk

Restore

While restoring, the credentials should be same as before disaster

• Copy nextcloud directory from backup disk to production
• Copy postgres directory from backup disk to production
• In docker-compose.yml file mount the restored directories nextcloud and postgres
• Run docker-compose up

Same procedure can follow with restic