feat(prometheus-pushgateway)

[luk43]

Description

• introducing the prometheus pushgateway.
• Sadly it is not part of the current KPS stack
  • [kube-prometheus-stack] possible to support Pushgateway? prometheus-community/helm-charts#2030

I would need to add a config example. I need to work this out.

Issues

Checklist

• This PR contains a description of the changes I'm making
• I updated the version in Chart.yaml
• I updated the changelog with an artifacthub.io/changes annotation in Chart.yaml, check the example in the documentation.
• I updated applicable README.md files using pre-commit run
• I documented any high-level concepts I'm introducing in docs/
• CI is currently green and this is ready for review
• I am ready to test changes after they are applied and released

[hairmare]

the docs say this:

... infra-apps chart which contains apps we consider valuable on most clusters ...

IMO this doesn't fit that bill

[bobs-bits]

I suggest a use case is for Prometheus Exporter in the stack is providing an endpoint for batch jobs to report to (e.g., Kubernetes Jobs). For instance, I would like like a job to report through to a dashboard the number of good and bad records to recieved, and to generate alerts when it receives bad records, and or the number of records drastically changes.

It looks like https://github.com/latchmihay got a start on a push gateway integration, perhaps this could be merged into the stack (by someone more skilled than I...apologies for not raising a PR myself)?

https://github.com/latchmihay/kube-prometheus-pushgateway

[MeCode4Food]

Just as single-instance jobs are a common use case, having a reliable destination for logs from batch jobs is equally important.

Since Kubernetes supports single-run Jobs, incorporating Pushgateway into the stack would enhance the handling of logs for these Jobs.