Added Grafana as an Observability Stack component.

k8s/services/grafana/helm-8.5.cue

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+package grafana
+
+import (
+	"k8s.io/api/core/v1"
+	"stakpak.dev/devx/k8s"
+)
+
+#KubeVersion: [=~"^8\\.5\\.2"]: minor: >=21
+#Values: [=~"^8\\.5\\.2"]: {
+
+    // Default values for deploying Grafana using Helm
+
+    // Image settings
+    image: {
+      repository: string | *"grafana/grafana"
+      tag: string | *"8.5.1"  // Specify the version you want to deploy
+      pullPolicy: v1.#enumPullPolicy | *"IfNotPresent"
+    }
+
+    // Admin user configuration
+    adminUser: string | *"admin"  // Default admin username
+    adminPassword: string | *"admin"  // Default admin password
+		existingSecret: string | *""
+
+    // Service settings
+	  service: {
+	  	type: string | *"ClusterIP"
+	  	port: k8s.#Port | *3000
+	  }
+
+    // Persistence settings
+    persistence: {
+      enabled: bool | *true  // Enable persistent storage
+      size: string | *"10Gi"  // Size of persistent volume
+		  storageClass: string | *""
+		  accessMode:   string | *"ReadWriteOnce"
+		  existingClaim: string | *""
+    }
+
+	  livenessProbe: {
+		  enabled:             bool | *true
+		  initialDelaySeconds: uint | *300
+		  periodSeconds:       uint | *1
+		  timeoutSeconds:      uint | *5
+		  failureThreshold:    uint | *3
+		  successThreshold:    uint | *1
+	  }
+
+  	readinessProbe: {
+	  	enabled:             bool | *true
+	  	initialDelaySeconds: uint | *30
+	  	periodSeconds:       uint | *10
+	  	timeoutSeconds:      uint | *1
+	  	failureThreshold:    uint | *3
+	  	successThreshold:    uint | *1
+	  }
+
+    // Ingress settings
+    ingress:{ 
+      enabled: bool | *false  // Enable ingress to expose Grafana externally
+		  annotations: k8s.#Annotations
+      hosts: string | *"grafana.local"  // Example hostname for your ingress
+		  tls: bool | *false
+    }
+
+	  resources: v1.#ResourceRequirements | *{}
+
+    // Dashboard provisioning (optional)
+    dashboards: {
+      enabled: bool | *true  // Enable provisioning of dashboards
+      defaultFolderName: string | *"grafana-dashboards"  // Default folder for imported dashboards
+      dashboardProviders: [{
+        name: string | *"default"  // Name of the dashboard provider
+        orgId: int | *1  // Organization ID
+        folder: string | *""  // Folder for dashboards
+        type: string | *"file"  // Provider type (e.g., file)
+        disableDeletion: bool | *false  // Disable dashboard deletion
+        editable: bool | *true  // Whether the dashboards are editable
+        updateIntervalSeconds: int | *10  // Time interval for updates in seconds
+        options: {
+          path: string | *"/var/lib/grafana/dashboards"  // Path for the dashboards
+        }
+      }]
+    }
+
+    // Datasource provisioning (optional)
+    datasources: {
+      enabled: bool | *true  // Enable provisioning of datasources
+      datasources: [{
+        name: string | *"Prometheus"  // Name of the datasource
+        type: string | *"prometheus"  // Type of the datasource
+        url: string & =~"^http(s)?://[a-zA-Z0-9.-]+(:[0-9]+)?(/.*)?$" | *"http://prometheus:9090" | "https://prometheus:9090"  // URL with validation and two default options
+        access: string | *"proxy"  // Access mode for the datasource
+        isDefault: bool | *true  // Marks the datasource as the default one
+      }]
+    }
+
+
+    // Node selector, tolerations, and affinity for pod scheduling
+	  affinity: v1.#Affinity
+	  nodeSelector: k8s.#Labels
+	  tolerations: [...v1.#Toleration]
+
+    // Annotations for Grafana pod
+		podAnnotations: k8s.#Annotations
+
+    // Additional volumes and volume mounts
+		extraVolumes: [...v1.#Volume]
+	  extraVolumeMounts: [...v1.#VolumeMount]
+}

k8s/services/grafana/helm.cue

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+package grafana
+
+import (
+	"stakpak.dev/devx/v1"
+	"stakpak.dev/devx/v1/traits"
+)
+
+#GrafanaChart: {
+	traits.#Helm
+	k8s: "version": (v1.getMatch & {
+		match: helm.version
+		input: #KubeVersion
+	}).result
+	helm: {
+		repoType: "default"
+		url:      "https://grafana.github.io/helm-charts"
+		chart:    "grafana"
+
+		version: string | *"6.22.0"
+
+		namespace: string | *"monitoring"
+		release:   string
+
+		values: (v1.getMatch & {
+			match: version
+			input: #Values
+		}).result
+	}
+}

k8s/stacks/observ.cue

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+package stacks
+
+import (
+	"stakpak.dev/devx/v1"
+	"stakpak.dev/devx/k8s/services/grafana"
+)
+
+ObservabilityStack: v1.#Stack & {
+	$metadata: stack: "ObservabilityStack"
+	components: {
+        grafana: grafana.#Grafana & {
+			helm: {
+				version: "8.5.2"
+				release: "grafana"
+				values: {}
+            }
+        }
+    }
+}