feat(tempo): add grafana sidecar datasource to tempo

Signed-off-by: Yordis Prieto <[email protected]>

Author: yordis

charts/tempo/README.md

@@ -105,6 +105,9 @@ Grafana Tempo Single Binary Mode
 | tempo.storage.trace.wal.path | string | `"/var/tempo/wal"` |  |
 | tempo.tag | string | `""` |  |
 | tempo.updateStrategy | string | `"RollingUpdate"` |  |
+| tempo.datasource.isDefault | bool | `false` | Whether to set this datasource as the default in Grafana |
+| tempo.datasource.jsonData | string | `"{}"` | Additional JSON data to configure the datasource |
+| tempo.datasource.uid | string | `""` | Unique identifier for the datasource |
 | tempoQuery.enabled | bool | `false` | if False the tempo-query container is not deployed |
 | tempoQuery.extraArgs | object | `{}` |  |
 | tempoQuery.extraEnv | list | `[]` | Environment variables to add |
@@ -124,6 +127,11 @@ Grafana Tempo Single Binary Mode
 | tempoQuery.service.port | int | `16686` |  |
 | tempoQuery.tag | string | `nil` |  |
 | tolerations | list | `[]` | Tolerations for pod assignment. See: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/ |
+| grafana.sidecar.datasources.enabled | bool | `true` | Enable the Grafana datasource sidecar |
+| grafana.sidecar.datasources.label | string | `""` | Label to use for the Grafana datasource sidecar |
+| grafana.sidecar.datasources.labelValue | string | `""` | Label value to use for the Grafana datasource sidecar |
+| grafana.sidecar.datasources.maxLines | int | `1000` | Maximum number of lines to read from the datasource config file |
+
 
 ## Chart Repo
 

charts/tempo/templates/datasources.yaml

@@ -0,0 +1,34 @@
+{{- if .Values.grafana.sidecar.datasources.enabled }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "tempo.fullname" . }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: {{ include "tempo.name" . }}
+    chart: {{ include "tempo.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+    {{- if .Values.grafana.sidecar.datasources.label }}
+    {{ .Values.grafana.sidecar.datasources.label }}: {{ .Values.grafana.sidecar.datasources.labelValue | quote }}
+    {{- else }}
+    grafana_datasource: "1"
+    {{- end }}
+data:
+  tempo-datasource.yaml: |-
+    apiVersion: 1
+    datasources:
+    - name: Tempo
+      type: tempo
+      access: proxy
+      url: {{ tpl .Values.tempo.datasource.url . | quote }}
+      version: 1
+      isDefault: {{ default false .Values.tempo.datasource.isDefault }}
+      {{- with .Values.tempo.datasource.uid }}
+      uid: {{ . | quote }}
+      {{- end }}
+      {{- with .Values.tempo.datasource.jsonData }}
+      jsonData:
+        {{- tpl . $ | nindent 8 }}
+      {{- end }}
+{{- end }}

charts/tempo/values.yaml

@@ -165,6 +165,11 @@ tempo:
   #   mountPath: /mnt/volume
   #   readOnly: true
   #   existingClaim: volume-claim
+  datasource:
+    isDefault: false
+    jsonData: "{}"
+    uid: ""
+    url: "http://{{ include "tempo.fullname" . }}:{{ .Values.tempo.server.http_listen_port }}"
 
 # -- Tempo configuration file contents
 # @default -- Dynamically generated tempo configmap
@@ -413,3 +418,11 @@ networkPolicy:
     ##  - namespaceSelector:
     ##    matchExpressions:
   ##    - {key: role, operator: In, values: [tempo]}
+
+grafana:
+  sidecar:
+    datasources:
+      enabled: true
+      label: ""
+      labelValue: ""
+      maxLines: 1000