Provide health check for celery beat

[nniehoff]

Environment

• Python version: 3.6
• Nautobot version: 1.2.0b1

We need to provide a healthcheck for Celery Beat. In the docker-compose development file, we are using nautobot-server health_check for the Celery pods today. Unfortunately, this health check doesn't check the health of the Celery worker or Celery beat. The helm chart uses a slightly different approach for the celery worker which is:

nautobot-server celery inspect ping --destination celery@$HOSTNAME

This works great for the Celery workers, but it doesn't work for Celery beat. In some quick research, we may need to implement a simple function to make this happen. I wanted to get this open before we ship 1.2.

[gneville-ot]

@nniehoff - Is there any update to this?

I've spotted that the health check applied to celery-beat in the Helm charts is nautobot-server celery inspect ping --destination celery@$HOSTNAME but won't work

[Kircheneer]

Possibly something like this can help? celery/celery#4079 (comment)

We are trialing this for the normal workers in a K8S environment

[glennmatthews]

That looks to be worker-specific to me, and what we're looking for in this issue is a healthcheck for beat rather than the workers. Thanks though!

[Kircheneer]

I thought that maybe there would be beat signals to cover the functionality, but it appears there is only beat-init and nothing after that.

[glennmatthews]

Desirable in LTM as well.

[glennmatthews]

Backported in #5430.