be able to configure server liveness/readiness/startup probe (#300)

* be able to configure server readiness probe

* be able to configure all probes

Author: jmazzitelli

kiali-server/templates/deployment.yaml

@@ -101,8 +101,8 @@ spec:
             {{- else }}
             scheme: HTTP
             {{- end }}
-          initialDelaySeconds: 5
-          periodSeconds: 30
+          initialDelaySeconds: {{ .Values.deployment.probes.readiness.initial_delay_seconds | int | default 5 }}
+          periodSeconds: {{ .Values.deployment.probes.readiness.period_seconds | int | default 30 }}
         livenessProbe:
           httpGet:
             path: {{ include "kiali-server.server.web_root" . | trimSuffix "/"  }}/healthz
@@ -112,8 +112,8 @@ spec:
             {{- else }}
             scheme: HTTP
             {{- end }}
-          initialDelaySeconds: 5
-          periodSeconds: 30
+          initialDelaySeconds: {{ .Values.deployment.probes.liveness.initial_delay_seconds | int | default 5 }}
+          periodSeconds: {{ .Values.deployment.probes.liveness.period_seconds | int | default 30 }}
         startupProbe:
           httpGet:
             path: {{ include "kiali-server.server.web_root" . | trimSuffix "/"  }}/healthz
@@ -123,9 +123,9 @@ spec:
             {{- else }}
             scheme: HTTP
             {{- end }}
-          initialDelaySeconds: 30
-          periodSeconds: 10
-          failureThreshold: 6
+          failureThreshold: {{ .Values.deployment.probes.startup.failure_threshold | int | default 6 }}
+          initialDelaySeconds: {{ .Values.deployment.probes.startup.initial_delay_seconds | int | default 30 }}
+          periodSeconds: {{ .Values.deployment.probes.startup.period_seconds | int | default 10 }}
         env:
         - name: ACTIVE_NAMESPACE
           valueFrom:

kiali-server/values.yaml

@@ -69,6 +69,17 @@ deployment:
   pod_annotations: {}
   pod_labels: {}
   priority_class_name: ""
+  probes:
+    liveness:
+      initial_delay_seconds: 5
+      period_seconds: 30
+    readiness:
+      initial_delay_seconds: 5
+      period_seconds: 30
+    startup:
+      failure_threshold: 6
+      initial_delay_seconds: 30
+      period_seconds: 10
   remote_cluster_resources_only: false
   # if deployment.hpa is defined, this replicas setting will be ignored
   replicas: 1