Nextcloud is spawning endless cron jobs that never ends with 100% CPU usage.

[Dominik-1980]

---

Expected Behavior

Cronjob should finish within some minutes.

Current Behavior

Cronjob hangs forever going to D state (uninterruptible sleep) and spawns a new one ever 5 minutes.
No chance to kill the process because of the D state.
Even no chance to kill the docker nextcloud container.
It prevents my whole system to shutdown regularly.

Steps to Reproduce

Just run nextcloud docker image

Environment

OS: Raspbian
CPU architecture: armhf
How docker service was installed: Native on Raspbian

Command used to create docker container (run/create/compose/screenshot)

`version: "2"
services:

nextcloud:
image: linuxserver/nextcloud:version-21.0.2
container_name: nextcloud
networks:
- homeserver
environment:
- PUID=1000
- PGID=1000
- TZ=Europe/Berlin
volumes:
- /srv/dev-disk-by-uuid-77365390-c57e-4b8a-846f-42fa099bf411/docker/appdata/nextcloud/config:/config
- /srv/dev-disk-by-uuid-77365390-c57e-4b8a-846f-42fa099bf411/docker/appdata/nextcloud/data:/data
links:
- mariadb
labels:
- "diun.enable=true"
restart: unless-stopped

mariadb:
image: yobasystems/alpine-mariadb:armhf
container_name: mariadb
networks:
homeserver:
ipv4_address: 172.18.0.20
environment:
- PUID=1000
- PGID=1000
- TZ=Europe/Berlin
- MYSQL_DATABASE=nextcloud
- MYSQL_USER=nextcloud
- MYSQL_PASSWORD=xxx
- MYSQL_ROOT_PASSWORD=
volumes:
- /srv/dev-disk-by-uuid-77365390-c57e-4b8a-846f-42fa099bf411/docker/appdata/mariadb/logs:/var/lib/mysql/mysql-bin
- /srv/dev-disk-by-uuid-77365390-c57e-4b8a-846f-42fa099bf411/docker/appdata/mariadb/mysql/_data:/var/lib/mysql
restart: unless-stopped

phpmyadmin:
container_name: phpmyadmin-nextcloud
image: phpmyadmin
networks:
- homeserver
restart: unless-stopped
environment:
- PMA_HOST=172.18.0.20
- PMA_PORT=3306
ports:
- 8182:80

networks:
homeserver:
external:
name: homeserver
`

Docker logs

[github-actions]

Thanks for opening your first issue here! Be sure to follow the bug or feature issue templates!

[Dominik-1980]

No one else with this problem??

Any chance to find out which part of the cronjob doesn't respond?

[j0nnymoe]

Are you able to provide any logs from the container? This is the first time we've heard of an issue like this.

[Dominik-1980]

There are many people with this problem.
But most is related to the maps app…
If you type „nextcloud cronjob hangs“ into google, there are many discussions on the nextcloud forum.
But for me, I got no workaround…
How can I provide some logs from the cronjob?

[j0nnymoe]

Logs from the /config/logs also an output of all the processes that keep spawning please.

[aptalca]

If you type „nextcloud cronjob hangs“ into google, there are many discussions on the nextcloud forum.

I clicked on a few of those links and it seems it's not an issue with our image. The culprit seems to be the maps app. Not sure if there is anything we can do as it's an upstream issue.

[homerr]

If you are able to find any further information on this one to give us a steer on if we have a container issue or not, please reopen. Until then closing this one down.

[Bodenseematze]

I currently also have this problem - with Nextcloud 22.2.3 and I don't have the maps app installed!
I have the following two errors in my log - which I think are not related to the problem:

{"reqId":"5vKYh0f4vESMq12cJ79e","level":3,"time":"2021-12-15T10:51:27+01:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Function libxml_disable_entity_loader() is deprecated at /home/www/nextcloud-22/lib/private/Updater/VersionCheck.php#100","userAgent":"--","version":"22.2.3.0","exception":{"Exception":"Error","Message":"Function libxml_disable_entity_loader() is deprecated at /home/www/nextcloud-22/lib/private/Updater/VersionCheck.php#100","Code":0,"Trace":[{"file":"/home/www/nextcloud-22/lib/private/Updater/VersionCheck.php","line":100,"function":"onError","class":"OC\\Log\\ErrorHandler","type":"::","args":[8192,"Function libxml_disable_entity_loader() is deprecated","/home/www/nextcloud-22/lib/private/Updater/VersionCheck.php",100]},{"file":"/home/www/nextcloud-22/apps/updatenotification/lib/Notification/BackgroundJob.php","line":101,"function":"check","class":"OC\\Updater\\VersionCheck","type":"->","args":[]},{"file":"/home/www/nextcloud-22/apps/updatenotification/lib/Notification/BackgroundJob.php","line":86,"function":"checkCoreUpdate","class":"OCA\\UpdateNotification\\Notification\\BackgroundJob","type":"->","args":[]},{"file":"/home/www/nextcloud-22/lib/private/BackgroundJob/Job.php","line":51,"function":"run","class":"OCA\\UpdateNotification\\Notification\\BackgroundJob","type":"->","args":[null]},{"file":"/home/www/nextcloud-22/lib/private/BackgroundJob/TimedJob.php","line":58,"function":"execute","class":"OC\\BackgroundJob\\Job","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"},{"__class__":"OC\\Log"}]},{"file":"/home/www/nextcloud-22/cron.php","line":127,"function":"execute","class":"OC\\BackgroundJob\\TimedJob","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"},{"__class__":"OC\\Log"}]}],"File":"/home/www/nextcloud-22/lib/private/Log/ErrorHandler.php","Line":92,"CustomMessage":"--"},"id":"61b9be1c9f10e"}

and

`[no app in context] Error: Repair step 'OCA\Mail\Command\RepairMailTheads' is unknown

GET /settings/apps/update/mail`

[nerozero]

I have same issue, logs are empty.