Manage the default datasource

[ludzzz]

Hi,

Is there a way to interact with the default datasource (the one named prometheus)?

Specifically, I would like to rename it through config/jsonnet.
Or completely disable it and to add it myself in the _config.grafana+.datasources+

Thank you

[brancz]

Yes you can do this. As you noted you can find it in _config.grafana.datasources. An example modifying it could be:

local grafana = import 'grafana/grafana.libsonnet';

{
  local basic =
    (grafana {
       _config+:: {
         namespace: 'monitoring-grafana',
         grafana+:: {
           datasources: [{
             name: 'prometheus',
             type: 'prometheus',
             access: 'proxy',
             orgId: 1,
             url: 'http://my-prometheus:1234',
             version: 1,
             editable: false,
           }],
         },
       },
     }).grafana,

  apiVersion: 'v1',
  kind: 'List',
  items:
    basic.dashboardDefinitions +
    [
      basic.dashboardSources,
      basic.dashboardDatasources,
      basic.deployment,
      basic.serviceAccount,
      basic.service {
        spec+: { ports: [
          port {
            nodePort: 30910,
          }
          for port in super.ports
        ] },
      },
    ],
}

Does that help?

[ludzzz]

It did help!

first I am sorry, I didn't give you the full picture.
I am using the Kube-Prometheus stack, I am not directly using this library, But since my question was related to this library I thought it would be a good place to ask.
I am a layer upper. So I am using the kube-prometheus stack on one of my clusters with grafana included and it will connect to other Prometheus instances on other clusters.

But overall, thanks to your answer, I got the mechanism and I understood the main issue was my knowledge of the jsonnet.

Here with what I came up with:
If you reading this careful I am using it on the kube-prometheus stack

local kp =
  (import 'kube-prometheus/kube-prometheus.libsonnet') +
  {
    _config+:: {
      grafana+: {
        datasources: [
                       if x.name == 'prometheus'
                       then x { name: 'cluster1-prometheus', url: 'http://prometheus.cluster1:9090' }
                       else x
                       for x in super.datasources
                     ] +
                     [
                       {
                         name: 'cluster2-prometheus',
                         type: 'prometheus',
                         org_id: 2,
                         url: 'http://prometheus.cluster2:9090',
                         version: 1,
                         editable: true,
                       },
                     ],
      },
    },
  };
{ ['grafana-' + name]: kp._config.grafana[name] for name in std.filter((function(name) name == 'datasources'), std.objectFields(kp._config.grafana)) }

Do you think I need to post it on kube-prometheus for knowledge sharing?

[brancz]

I think it's absolutely worth adding a documentation page for this in the kube-prometheus project!