Docker setup & cron

Reiner_Nippes · August 28, 2020, 3:15pm

Reiner_Nippes:

      #!/bin/bash
      docker exec redis redis-cli -a <your-redis-password> FLUSHALL
      docker exec --user www-data nextcloud php occ files:scan --all
      docker exec --user www-data nextcloud php occ files:scan-app-data
      exit 0

use this script as cronjob. do not try to enable cron inside the contaier. inside any container.

so you just add docker exec --user www-data nextcloud php occ preview:pre-generate assuming that your container name is nextcloud and www-data the web server user.

just saying.

github.com

nextcloud/docker/blob/488378f8e88071a68bec5c0f846c294fb61ddd76/18.0/apache/cron.sh#L4


      
          #!/bin/sh
          set -eu
          
          exec busybox crond -f -l 0 -L /dev/stdout

this is a way to enable crond inside a container.

exec executes everything you use as the first argument. e.g. a shell skript has no +x bit. exec that-skript is your friend. and busybox crond just starts the cron daemon inside the container.

nevertheless after i wrote the comment above i found this article in german Projekt Rootserver - geschlossen it says: don’t do it with busybox. not a good idea. the authors advice: use the host cron + docker exec