auth sidecar

cluster-resources/policies/auth-sidecar-injector.yaml

@@ -0,0 +1,87 @@
+apiVersion: kyverno.io/v1
+kind: ClusterPolicy
+metadata:
+  name: inject-auth-sidecar
+  annotations:
+    pod-policies.kyverno.io/autogen-controllers: none
+    policies.kyverno.io/title: Inject Auth Sidecar
+    policies.kyverno.io/minversion: 1.6.0
+    policies.kyverno.io/category: Security
+    policies.kyverno.io/severity: medium
+    policies.kyverno.io/subject: Pod
+    policies.kyverno.io/description: >-
+      Injects an auth sidecar container into Pods annotated with policies.forteapps.io/auth: "true". The sidecar proxies requests through a token-based auth layer. Upstream URL and image can be overridden via policies.forteapps.io/auth-upstream-url and policies.forteapps.io/auth-image annotations.
+spec:
+  background: false
+  rules:
+  - name: inject-sidecar
+    skipBackgroundRequests: true
+    match:
+      any:
+      - resources:
+          kinds:
+          - Pod
+          annotations:
+            policies.forteapps.io/auth: "true"
+    exclude:
+      any:
+      - resources:
+          namespaces:
+          - kube-system
+          - kyverno
+          - argocd
+          - cert-manager
+          - monitoring
+    mutate:
+      patchStrategicMerge:
+        spec:
+          containers:
+          - name: auth-sidecar
+            image: "{{ request.object.metadata.annotations.\"policies.forteapps.io/auth-image\" || 'ghcr.io/snothub/stunning-memory' }}:{{ request.object.metadata.annotations.\"policies.forteapps.io/auth-image-version\" || 'latest' }}"
+            ports:
+            - containerPort: 8080
+              name: auth
+              protocol: TCP
+            env:
+            - name: AUTH_LISTEN_ADDR
+              value: ":8080"
+            - name: AUTH_UPSTREAM_URL
+              value: "{{ request.object.metadata.annotations.\"policies.forteapps.io/auth-upstream-url\" || 'http://localhost:3000' }}"
+            - name: AUTH_TOKEN_FILE
+              value: "/etc/auth/tokens"
+            - name: AUTH_MODE
+              value: "token"
+            volumeMounts:
+            - name: auth-tokens
+              mountPath: /etc/auth
+              readOnly: true
+            resources:
+              limits:
+                cpu: 50m
+                memory: 64Mi
+              requests:
+                cpu: 10m
+                memory: 32Mi
+            readinessProbe:
+              httpGet:
+                path: /healthz
+                port: 8080
+              initialDelaySeconds: 2
+              periodSeconds: 5
+            livenessProbe:
+              httpGet:
+                path: /healthz
+                port: 8080
+              initialDelaySeconds: 5
+              periodSeconds: 10
+            securityContext:
+              runAsNonRoot: true
+              allowPrivilegeEscalation: false
+              readOnlyRootFilesystem: true
+              capabilities:
+                drop:
+                - ALL
+          volumes:
+          - name: auth-tokens
+            secret:
+              secretName: auth-tokens