salt: Disable loki grafana dashboard if disabled

CHANGELOG.md

@@ -115,6 +115,10 @@
 - Do no longer use `latest` for `storage-operator` image
   (PR[#4299](https://github.com/scality/metalk8s/pull/4299))
 
+- Loki Grafana dashboard and datasources are enabled only
+  if Loki is enabled.
+  (PR[#4464](https://github.com/scality/metalk8s/pull/4464))
+
 ## Release 127.0.7 (in development)
 
 ## Release 127.0.6

buildchain/buildchain/salt_tree.py

@@ -311,18 +311,18 @@ def task(self) -> types.TaskDict:
     ),
     Path("salt/metalk8s/addons/dex/deployed/nginx-ingress-ca-cert-configmap.sls"),
     Path("salt/metalk8s/addons/logging/deployed/init.sls"),
-    Path("salt/metalk8s/addons/logging/deployed/dashboards.sls"),
     Path("salt/metalk8s/addons/logging/deployed/namespace.sls"),
-    Path("salt/metalk8s/addons/logging/deployed/files/logs.json"),
-    Path("salt/metalk8s/addons/logging/deployed/files/loki.json"),
     Path("salt/metalk8s/addons/logging/fluent-bit/config/fluent-bit.yaml.j2"),
     Path("salt/metalk8s/addons/logging/fluent-bit/deployed/chart.sls"),
     Path("salt/metalk8s/addons/logging/fluent-bit/deployed/configmap.sls"),
     Path("salt/metalk8s/addons/logging/fluent-bit/deployed/init.sls"),
     Path("salt/metalk8s/addons/logging/fluent-bit/deployed/service-configuration.sls"),
     Path("salt/metalk8s/addons/logging/loki/config/loki.yaml"),
+    Path("salt/metalk8s/addons/logging/loki/deployed/files/logs.json"),
+    Path("salt/metalk8s/addons/logging/loki/deployed/files/loki.json"),
     Path("salt/metalk8s/addons/logging/loki/deployed/chart.sls"),
     Path("salt/metalk8s/addons/logging/loki/deployed/datasource.sls"),
+    Path("salt/metalk8s/addons/logging/loki/deployed/dashboards.sls"),
     Path("salt/metalk8s/addons/logging/loki/deployed/init.sls"),
     Path("salt/metalk8s/addons/logging/loki/deployed/loki-configuration-secret.sls"),
     Path("salt/metalk8s/addons/logging/loki/deployed/macro.j2"),

salt/metalk8s/addons/logging/deployed/init.sls

@@ -3,4 +3,14 @@ include:
   - metalk8s.addons.logging.loki.deployed
   - metalk8s.addons.logging.fluent-bit.deployed
   - metalk8s.addons.prometheus-operator.deployed.namespace
-  - .dashboards
+
+{#- In MetalK8s 128.0 we changed the fluent-bit dashboard to use
+    the one from the helm chart. We need to remove the old one
+    to avoid conflicts.
+    This can be removed in `development/129.0` #}
+Ensure old fluent-bit dashboard does no longer exists:
+  metalk8s_kubernetes.object_absent:
+    - name: fluent-bit-dashboard
+    - namespace: metalk8s-monitoring
+    - apiVersion: v1
+    - kind: ConfigMap

salt/metalk8s/addons/logging/loki/deployed/dashboards.sls

@@ -0,0 +1,16 @@
+#!jinja | metalk8s_kubernetes
+{%- from "metalk8s/addons/prometheus-operator/macros.j2"
+    import configmaps_from_dashboards with context %}
+
+{{ configmaps_from_dashboards([
+  {
+    'name': 'logs',
+    'title': 'Logs',
+    'tags': ['logging'],
+  },
+  {
+    'name': 'loki',
+    'title': 'Loki',
+    'tags': ['logging'],
+  }
+]) }}

salt/metalk8s/addons/logging/loki/deployed/init.sls

@@ -7,6 +7,7 @@ include:
   - .chart
   - .service
   - .datasource
+  - .dashboards
   - .workaround-job-dep
 
 {#- Due to a bug in Loki that prevent deletion of the old chunks,
@@ -45,6 +46,7 @@ Ensure Loki objects does not exist:
           force_absent: True
     - mods:
       - metalk8s.addons.logging.loki.deployed.chart
+      - metalk8s.addons.logging.loki.deployed.dashboards
 
 Ensure Loki config does not exist:
   metalk8s_kubernetes.object_absent:

tests/post/steps/test_monitoring.py

@@ -549,6 +549,9 @@ def check_grafana_dashboards(host, grafana_api):
     expected_dashboards = expected_dashboards_json["all"]
     if utils.get_pillar(host, "addons:fluent-bit:enabled"):
         expected_dashboards.update(expected_dashboards_json["fluent-bit"])
+    if utils.get_pillar(host, "addons:loki:enabled"):
+        expected_dashboards.update(expected_dashboards_json["Logs"])
+        expected_dashboards.update(expected_dashboards_json["Loki"])
 
     uid_mismatches = []
     extra_dashboards = []