computer-playbook/roles/server_docker-nextcloud/README.md

# role docker-nextcloud

## precondition

Before executing cli commands the following variable needs to be set:

```bash
NEXTCLOUD_APPLICATION_DOCKER_CONTAINER=nextcloud-application-1
```

## update

To update the nextcloud container execute the following commands on the server:
```bash
  docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ maintenance:mode --on
  sudo python /home/administrator/scripts/docker-volume-backup/docker-volume-backup.py
  export COMPOSE_HTTP_TIMEOUT=600
  export DOCKER_CLIENT_TIMEOUT=600
  cd /home/administrator/docker-compose/nextcloud && docker-compose down
```

Afterwards update the ***nextcloud_version*** variable to the next version and run the this repository with this ansible role.

It is only possible to update from one to the next major version at a time

Wait for the update to finish.

You can verify that the update is finished by checking the following logs:

```bash
docker logs $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER
```

and

```bash
docker exec -it $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER top
```

If nextcloud stays in the maintenance mode after the update try the following:

```bash
  docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ maintenance:mode --on
  docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ upgrade
  docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ maintenance:mode --off
```

If the update process fails execute

```bash
  docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ maintenance:repair
```

and disable the not functioning apps.

## recover latest backup
```bash
cd /home/administrator/docker-compose/nextcloud &&
docker-compose down &&
docker exec -i nextcloud_database_1 mysql -u nextcloud -pPASSWORT nextcloud < "/Backups/$(sha256sum /etc/machine-id | head -c 64)/docker-volume-backup/latest/nextcloud_database/sql/backup.sql" &&
cd /home/administrator/scripts/docker-volume-backup &&
bash ./docker-volume-recover.sh "nextcloud_data" "$(sha256sum /etc/machine-id | head -c 64)"
```

## database
### database access
To access the database execute
```bash
  docker exec -it nextcloud_database_1 mysql -u nextcloud -D nextcloud -p
```

### recreate database with new volume:
```bash
docker run --detach --name nextcloud_database_1 --env MYSQL_USER="nextcloud" --env MYSQL_PASSWORD=PASSWORD --env MYSQL_ROOT_PASSWORD=PASSWORD --env MYSQL_DATABASE="nextcloud" -v nextcloud_database:/var/lib/mysql
```

The process can be checked with:

```bash
show processlist;
```

## occ

To use occ run:

```bash
  docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ
```

## app relevant tables
- oc_appconfig
- oc_migrations

### initialize duplicates

```bash
  sudo docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ duplicates:find-all --output
```

### unlock files
```bash
  docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ maintenance:mode --on
  docker exec -it nextcloud_database_1 mysql -u nextcloud -pPASSWORD1234132 -D nextcloud -e "delete from oc_file_locks where 1"
  docker exec -it -u www-data $NEXTCLOUD_APPLICATION_DOCKER_CONTAINER /var/www/html/occ maintenance:mode --off
```

## architecture
### Maria DB
Until NC24 MariaDB version has to be used.

## performance
### 504 Gateway Timeout

```bash
  docker logs nextcloud_web_1 --tail 1000 | grep 504
```

#### See
- https://support.f5.com/csp/article/K48373902
- https://github.com/nextcloud/server/issues/25436
- https://help.nextcloud.com/t/update-to-next-cloud-21-0-2-has-get-an-error/117028/23?page=2
- https://serverfault.com/questions/178671/nginx-php-fpm-504-gateway-time-out-error-with-almost-zero-load-on-a-test-se
- https://help.nextcloud.com/t/solved-manual-lemp-install-php-fpm-timing-out/39070

## further information
- https://github.com/nextcloud/docker/blob/master/.examples/docker-compose/with-nginx-proxy/mariadb/fpm/docker-compose.yml
- https://goneuland.de/nextcloud-upgrade-auf-neue-versionen-mittels-docker/
- https://help.nextcloud.com/t/cant-start-nextcloud-because-the-version-of-the-data-is-higher-than-the-docker-image-version-and-downgrading-is-not-supported/109438
- https://github.com/nextcloud/docker/issues/1302
- https://help.nextcloud.com/t/update-to-22-failed-with-database-error-updated/120682
- https://help.nextcloud.com/t/nc-update-to-21-0-0-beta1-exception-database-error/101124/4
- https://wolfgang.gassler.org/reset-password-mariadb-mysql-docker/
- https://unix.stackexchange.com/questions/478855/ansible-docker-container-and-depends-on
- https://github.com/gdiepen/docker-convenience-scripts
- https://help.nextcloud.com/t/several-issues-after-upgrading-to-nextcloud-21/113118/3
- https://forum.openmediavault.org/index.php?thread/31782-docker-nextcloud-talk-plugin-and-turnserver/
- https://help.nextcloud.com/t/nextcloud-talk-im-docker-container-turn-server-auf-docker-host-kein-video/84133/10