flywithu/kopano-docker
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wip: Implement a scheduler to run recurring tasks (such as z-push-gabsync) (#123)

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* add scheduler container for gabsync
Adds a general scheduler container to trigger tasks within containers.
Also adds gabsync to zpush image
* make scheduler dynamic
execute each cron job once at startup to see if they would succeed
* remove services scripts from core container (now is part of the scheduler)
* add "CRONDELAY" for tasks that should not be executed at startup
* add documentation
* clear out crontab at startup
This commit is contained in:
Felix Bartels
2019-03-24 17:33:41 +01:00
committed by GitHub
parent 830ac3c838
commit caac8a5c03
12 changed files with 114 additions and 22 deletions
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README.md
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@@ -89,6 +89,19 @@ You can easily rebuild all images based on the currently available Kopano versio
To be able to easily go back to a previous version you can also "tag" you Docker images by running e.g. `make tag-core`.
### Recurring tasks and maintenance tasks within Kopano
There are certain tasks within Kopano that either need to be executed once (like creating the public store when starting a new environment for the first time) or on a regular base (like syncing the internal user list with and external ldap tree). For convinience this project includes a "schedular" container that will take care of this and that can be dynamically configured through env variables.
The container knows two kinds of cron jobs (syntax is the same as within crontab):
- `CRON_ZPUSHGAB=0 22 * * * docker exec kopano_zpush z-push-gabsync -a sync`
- Jobs prefixed with `CRON_` are executed once at container startup (and container startup will fail if one of the jobs fail) and then at the scheduled time.
- `CRONDELAYED_KBACKUP=30 1 * * * docker run --rm -it zokradonh/kopano_utils kopano-backup -h`
- Jobs prefixed with `CRONDELAYED_` are only executed at the scheduled time.
Instead of using the internal scheduler one can also just use an existing scheduler (cron on the docker host?) to execute these tasks.
### How to use the project with the official and supported Kopano releases?
This project also makes it possible to build Docker images based on the official Kopano releases. For this the following section needs to be modified in `.env`: