support deleteDatasources

[pschulten]

Currently there is no way to delete auto-provisioned datasources before update/create (as described here: https://grafana.com/docs/grafana/latest/administration/provisioning/#data-sources)

Does it make sense to support that?

[brancz]

This repository is all about maintaining Grafana instances in an immutable way where everything is configured via files, so I don't see how deleting data sources can be combined with that philosophy. Can you explain why you would need this? Can't you just delete the data source from the files and it won't be provisioned anymore?

[pschulten]

Thanks for getting back!

I read the official the grafana provisioning docs (linked above) and they describe the datasources.yaml file by first deleting the standard datasource(s) before defining them.

Maybe that's not needed anymore...
But this library "implements" the creation part but not the deletion part in

kubernetes-grafana/grafana/grafana.libsonnet

Line 185 in 199e363

'datasources.yaml': std.manifestJsonEx(

It should either expose the datasources.yaml file completely or also provide users a way to define the deleteDatasources object.

I don't want to start a hairsplitting contest here, so please close this issue, if you disagree

[brancz]

Aha I see! The whole file is actually templated using _config.datasources configuration:

kubernetes-grafana/grafana/grafana.libsonnet

Line 188 in 199e363

datasources: g._config.datasources,

This means that you can arbitrarily configure that configuration option and it will be reflected when starting Grafana with that configuration, since it's all 100% declarative.