Fix liveness probe in oidc client

The liveness probe was not setup correctly causing probe warnings.
This update added the handling for the readiness and liveness probes.
The probe parameters are also setup to be configurable in the helm
charts.

Partial-bug: 1877172

Change-Id: Ibe2d760897e761d361c3d4fe8c1ce41b33609d54
Signed-off-by: Teresa Ho <teresa.ho@windriver.com>

stx-oidc-auth-helm/stx-oidc-auth-helm/helm-charts/oidc-client/templates/deployment.yaml

@@ -40,14 +40,22 @@ spec:
               protocol: TCP
           livenessProbe:
             httpGet:
-              path: /
-              port: http
+              path: {{ .Values.livenessProbe.httpPath }}
+              port: 5555
               scheme: HTTPS
+              initialDelaySeconds: {{ .Values.livenessProbe.initialDelaySeconds }}
+              periodSeconds: {{ .Values.livenessProbe.periodSeconds }}
+              timeoutSeconds: {{ .Values.livenessProbe.timeoutSeconds }}
+              failureThreshold: {{ .Values.livenessProbe.failureThreshold }}
           readinessProbe:
             httpGet:
-              path: /
-              port: http
+              path: {{ .Values.readinessProbe.httpPath }}
+              port: 5555
               scheme: HTTPS
+              initialDelaySeconds: {{ .Values.readinessProbe.initialDelaySeconds }}
+              periodSeconds: {{ .Values.readinessProbe.periodSeconds }}
+              timeoutSeconds: {{ .Values.readinessProbe.timeoutSeconds }}
+              failureThreshold: {{ .Values.readinessProbe.failureThreshold }}
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
           volumeMounts:

stx-oidc-auth-helm/stx-oidc-auth-helm/helm-charts/oidc-client/values.yaml

@@ -39,6 +39,20 @@ ingress:
       paths: []
   tls: []
 
+livenessProbe:
+  initialDelaySeconds: 1
+  failureThreshold: 1
+  httpPath: "/healthz"
+  periodSeconds: 10
+  timeoutSeconds: 1
+
+readinessProbe:
+  initialDelaySeconds: 1
+  failureThreshold: 1
+  httpPath: "/healthz"
+  periodSeconds: 10
+  timeoutSeconds: 1
+
 resources: {}
 
 nodeSelector: {}

stx-oidc-client/centos/docker/main.go

@@ -177,6 +177,10 @@ func start_app(config Config) {
 
     http.HandleFunc("/", config.a.handleLogin)
     http.HandleFunc(u.Path, config.a.handleCallback)
+    http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
+        w.WriteHeader(200)
+        w.Write([]byte("ok"))
+    })
 
     switch listenURL.Scheme {
     case "http":