Scheduling recurring, cron-like tasks using containers?

Archive Rancher 1.x
1

Is it possible to schedule containers through Rancher that run on a cron-like schedule? This would be useful for running daily backups and other recurring tasks.

6 Likes
2

I was going to just +1 this post, but I needed 20 characters. :neutral_face:
This would be a nice feature!

1 Like
3

I think the +1 feature is symbolized with a heart on this forum… :wink:

2 Likes
4

Even better, create a GitHub issue so more people could +1 your idea and we could put it on our roadmapif enough people want it. :slight_smile:

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I posted this in the GH issue, but I figured some people on the forums might not see it

I created a service that can start containers on a schedule. Its pretty easy to get going.

First, launch it using this docker-compose.yml:

rancher-cron:
  labels:
    io.rancher.container.create_agent: 'true'
    io.rancher.container.agent.role: environment
  image: socialengine/rancher-cron:0.1.0

Then, have a Start Once container in a service with com.socialengine.rancher-cron.schedule label:

your-cron-service:
  labels:
    io.rancher.container.start_once: 'true'
    com.socialengine.rancher-cron.schedule: '@every 10m'
  image: your-cron-image

Then, rancher-cron service will use rancher metadata to find the schedule, and will launch your-cron-service container every 10 minutes.

3 Likes
6

Is this available for K8s env ? I assume it should be, but I see it in the catalog as “Not Compatible”…

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No; k8s has its own cronjob controller… https://kubernetes.io/docs/concepts/workloads/controllers/cron-jobs/