fix: adjust startup, liveness and readiness probes settings

Startup probe settings seem to have been added in the upstream Backstage Chart
in [1], but the current settings do not allow the RHDH Chart for the
liveness probe to be triggered sufficiently enough for the app to be
considered live.
This adjust such settings by accounting for the worst case scenario
where the application might take a bit long to start.

This also aligns the probe endpoints with the upstream chart.

[1] backstage/charts#216

bundle/rhdh/manifests/backstage-operator.clusterserviceversion.yaml

@@ -39,7 +39,7 @@ metadata:
     categories: Developer Tools
     certified: "true"
     containerImage: registry-proxy.engineering.redhat.com/rh-osbs/rhdh-rhdh-rhel9-operator:1.3
-    createdAt: "2024-11-27T12:15:30Z"
+    createdAt: "2024-12-13T10:42:18Z"
     description: Red Hat Developer Hub is a Red Hat supported version of Backstage.
       It comes with pre-built plug-ins and configuration settings, supports use of
       an external database, and can help streamline the process of setting up a self-managed

bundle/rhdh/manifests/rhdh-default-config_v1_configmap.yaml

@@ -251,26 +251,38 @@ data:
                   type: RuntimeDefault
                 runAsNonRoot: true
                 allowPrivilegeEscalation: false
+              startupProbe:
+                # This gives enough time upon container startup before the liveness and readiness probes are triggered.
+                # Giving (120s = initialDelaySeconds + failureThreshold * periodSeconds) to account for the worst case scenario.
+                httpGet:
+                  path: /.backstage/health/v1/liveness
+                  port: backend
+                  scheme: HTTP
+                initialDelaySeconds: 60
+                timeoutSeconds: 4
+                periodSeconds: 20
+                successThreshold: 1
+                failureThreshold: 3
               readinessProbe:
                 failureThreshold: 3
                 httpGet:
-                  path: /healthcheck
-                  port: 7007
+                  path: /.backstage/health/v1/readiness
+                  port: backend
                   scheme: HTTP
-                initialDelaySeconds: 30
+                #initialDelaySeconds: 30
                 periodSeconds: 10
                 successThreshold: 2
-                timeoutSeconds: 2
+                timeoutSeconds: 4
               livenessProbe:
                 failureThreshold: 3
                 httpGet:
-                  path: /healthcheck
-                  port: 7007
+                  path: /.backstage/health/v1/liveness
+                  port: backend
                   scheme: HTTP
-                initialDelaySeconds: 60
+                #initialDelaySeconds: 60
                 periodSeconds: 10
                 successThreshold: 1
-                timeoutSeconds: 2
+                timeoutSeconds: 4
               ports:
                 - name: backend
                   containerPort: 7007

config/profile/rhdh/default-config/deployment.yaml

@@ -96,26 +96,38 @@ spec:
               type: RuntimeDefault
             runAsNonRoot: true
             allowPrivilegeEscalation: false
+          startupProbe:
+            # This gives enough time upon container startup before the liveness and readiness probes are triggered.
+            # Giving (120s = initialDelaySeconds + failureThreshold * periodSeconds) to account for the worst case scenario.
+            httpGet:
+              path: /.backstage/health/v1/liveness
+              port: backend
+              scheme: HTTP
+            initialDelaySeconds: 60
+            timeoutSeconds: 4
+            periodSeconds: 20
+            successThreshold: 1
+            failureThreshold: 3
           readinessProbe:
             failureThreshold: 3
             httpGet:
-              path: /healthcheck
-              port: 7007
+              path: /.backstage/health/v1/readiness
+              port: backend
               scheme: HTTP
-            initialDelaySeconds: 30
+            #initialDelaySeconds: 30
             periodSeconds: 10
             successThreshold: 2
-            timeoutSeconds: 2
+            timeoutSeconds: 4
           livenessProbe:
             failureThreshold: 3
             httpGet:
-              path: /healthcheck
-              port: 7007
+              path: /.backstage/health/v1/liveness
+              port: backend
               scheme: HTTP
-            initialDelaySeconds: 60
+            #initialDelaySeconds: 60
             periodSeconds: 10
             successThreshold: 1
-            timeoutSeconds: 2
+            timeoutSeconds: 4
           ports:
             - name: backend
               containerPort: 7007