feat(cnpg-monitoring): added cnpg-monitoring helm chart

charts/cnpg-monitoring/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/cnpg-monitoring/Chart.lock

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+dependencies:
+- name: kube-state-metrics
+  repository: https://prometheus-community.github.io/helm-charts
+  version: 5.25.1
+digest: sha256:44ef0e594a43e89ac37d87b317983705a7318e177bc1c97ce11e8bfcb9322e54
+generated: "2024-08-01T10:01:05.918725051+02:00"

charts/cnpg-monitoring/Chart.yaml

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+apiVersion: v2
+name: cnpg-monitoring
+description: A kube-state-metrics to generate and expose CNPG resources metrics
+type: application
+version: 0.1.0
+dependencies:
+  - name: kube-state-metrics
+    version: "5.25.*"
+    repository: https://prometheus-community.github.io/helm-charts

charts/cnpg-monitoring/values.yaml

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+kube-state-metrics:
+  prometheus:
+    monitor:
+      enabled: true
+      jobLabel: "app.kubernetes.io/instance"
+  collectors: [ ]
+  extraArgs:
+    - --custom-resource-state-only=true
+  rbac:
+    extraRules:
+      - apiGroups:
+          - postgresql.cnpg.io
+        resources:
+          - clusters
+          - poolers
+          - scheduledbackups
+        verbs: [ "list", "watch" ]
+
+  customResourceState:
+    enabled: true
+    config:
+      spec:
+        resources:
+          - groupVersionKind:
+              group: postgresql.cnpg.io
+              version: v1
+              kind: Cluster
+            metricNamePrefix: cnpg_resource_cluster
+            metrics:
+              - name: info
+                help: Information about CNPG Cluster
+                each:
+                  type: Info
+                  info:
+                    labelsFromPath:
+                      cnpg_commit_hash: [status, cloudNativePGCommitHash]
+                      primary_update_method: [spec, primaryUpdateMethod]
+                      primary_update_strategy: [spec, primaryUpdateStrategy]
+              - name: condition
+                help: The condition of a CNPG Cluster
+                each:
+                  type: Gauge
+                  gauge:
+                    path: [status, conditions]
+                    labelsFromPath:
+                      type: [type]
+                      reason: [reason]
+                    valueFrom: [status]
+              - name: spec_instances
+                help: Number of desired instances for a CNPG Cluster
+                each:
+                  type: Gauge
+                  gauge:
+                    path: [spec, instances]
+              - name: status_instances
+                help: Number of instances per CNPG Cluster
+                each:
+                  type: Gauge
+                  gauge:
+                    path: [status, instances]
+              - name: status_ready_instances
+                help: Number of ready instances per CNPG Cluster
+                each:
+                  type: Gauge
+                  gauge:
+                    path: [status, readyInstances]
+            labelsFromPath:
+              name: [metadata, name]
+              namespace: [metadata, namespace]
+              cnpg_cluster: [metadata, name]
+          - groupVersionKind:
+              group: postgresql.cnpg.io
+              version: v1
+              kind: Pooler
+            metricNamePrefix: cnpg_resource_pooler
+            metrics:
+              - name: info
+                help: Information about CNPG Pooler
+                each:
+                  type: Info
+                  info:
+                    labelsFromPath:
+                      type: [spec, type]
+                      paused: [spec, pgbouncer, paused]
+                      pool_mode: [spec, pgbouncer, poolMode]
+              - name: spec_instances
+                help: Number of desired instances for a CNPG Pooler
+                each:
+                  type: Gauge
+                  gauge:
+                    path: [spec, instances]
+              - name: status_instances
+                help: Number of instances per CNPG Pooler
+                each:
+                  type: Gauge
+                  gauge:
+                    path: [status, instances]
+            labelsFromPath:
+              name: [metadata, name]
+              namespace: [metadata, namespace]
+              cnpg_cluster: [spec, cluster, name]