added version-checker

argocd-apps/homelab.yaml

@@ -943,4 +943,30 @@ spec:
     syncOptions:
     - CreateNamespace=true
     - PruneLast=true
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: version-checker
+  namespace: argocd
+  finalizers:
+  - resources-finalizer.argocd.argoproj.io
+  labels:
+    app.kubernetes.io/name: version-checker
+spec:
+  project: homelab
+  source:
+    repoURL: https://gitea.dooplex.hu/admin/homelab-manifests.git
+    targetRevision: main
+    path: version-checker-system
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: version-checker-system
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+      - ServerSideApply=true
 ---

version-checker-system/version-checker.yaml

@@ -0,0 +1,176 @@
+# Version Checker - Container Image Version Monitoring for Kubernetes
+# Namespace: version-checker-system
+# 
+# This deploys jetstack/version-checker which monitors all container images
+# running in the cluster and compares them to latest available upstream versions.
+# Metrics are exposed for Prometheus scraping.
+#
+# Documentation: https://github.com/jetstack/version-checker
+#
+# Metrics exposed:
+# - version_checker_is_latest_version{...} = 1 (up to date) or 0 (outdated)
+# - version_checker_image_info{image, current_version, latest_version, ...}
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: version-checker-system
+  labels:
+    app.kubernetes.io/name: version-checker
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: version-checker
+  namespace: version-checker-system
+  labels:
+    app.kubernetes.io/name: version-checker
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: version-checker
+  labels:
+    app.kubernetes.io/name: version-checker
+rules:
+  # Required to read pod specs to get container images
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["get", "watch", "list"]
+  # Required to check Kubernetes version (optional feature)
+  - apiGroups: [""]
+    resources: ["nodes"]
+    verbs: ["get", "list"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: version-checker
+  labels:
+    app.kubernetes.io/name: version-checker
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: version-checker
+subjects:
+  - kind: ServiceAccount
+    name: version-checker
+    namespace: version-checker-system
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: version-checker
+  namespace: version-checker-system
+  labels:
+    app.kubernetes.io/name: version-checker
+    app.kubernetes.io/instance: version-checker
+    app.kubernetes.io/version: "v0.10.0"
+  annotations:
+    reloader.stakater.com/auto: "true"
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: version-checker
+      app.kubernetes.io/instance: version-checker
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: version-checker
+        app.kubernetes.io/instance: version-checker
+        app.kubernetes.io/version: "v0.10.0"
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "8080"
+        prometheus.io/path: "/metrics"
+    spec:
+      serviceAccountName: version-checker
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        fsGroup: 1000
+      containers:
+        - name: version-checker
+          image: quay.io/jetstack/version-checker:v0.10.0
+          imagePullPolicy: IfNotPresent
+          args:
+            # Test ALL containers in the cluster (not just annotated ones)
+            - --test-all-containers
+            # How often to re-check versions (default: 1h)
+            - --image-cache-timeout=1h
+            # Log level
+            - --log-level=info
+          ports:
+            - name: metrics
+              containerPort: 8080
+              protocol: TCP
+          resources:
+            requests:
+              cpu: 10m
+              memory: 32Mi
+            limits:
+              cpu: 100m
+              memory: 128Mi
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: metrics
+            initialDelaySeconds: 30
+            periodSeconds: 30
+          readinessProbe:
+            httpGet:
+              path: /readyz
+              port: metrics
+            initialDelaySeconds: 10
+            periodSeconds: 10
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop:
+                - ALL
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: version-checker
+  namespace: version-checker-system
+  labels:
+    app.kubernetes.io/name: version-checker
+    app.kubernetes.io/instance: version-checker
+spec:
+  type: ClusterIP
+  ports:
+    - name: metrics
+      port: 8080
+      targetPort: metrics
+      protocol: TCP
+  selector:
+    app.kubernetes.io/name: version-checker
+    app.kubernetes.io/instance: version-checker
+---
+# ServiceMonitor for Prometheus Operator (if using kube-prometheus-stack)
+# If you're using plain Prometheus with pod annotations, this can be removed
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: version-checker
+  namespace: version-checker-system
+  labels:
+    app.kubernetes.io/name: version-checker
+    app.kubernetes.io/instance: version-checker
+    # Add your Prometheus selector label if needed
+    # release: prometheus
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: version-checker
+  namespaceSelector:
+    matchNames:
+      - version-checker-system
+  endpoints:
+    - port: metrics
+      interval: 5m
+      scrapeTimeout: 30s
+      path: /metrics