🔧(jenny) use proper check for kube probes

For the Django app we use the hearbeat add by the
lib dockerflow for the liveness and readiness probes
Use Nginx status page for liveness probe.
And check migration for the startup probe.

jenny/templates/configmap.yaml

@@ -39,6 +39,19 @@ data:
             }
         }
 
+        server {
+          listen 5000;
+          server_name localhost;
+
+          location /__status__ {
+            stub_status;
+            allow 127.0.0.1;
+            deny all;
+            access_log off;
+          }
+
+        }
+
         types {
           text/html                             html htm shtml;
           text/css                              css;

jenny/templates/deployment.yaml

@@ -43,7 +43,7 @@ spec:
             {{- toYaml .Values.resources | nindent 12 }}
           livenessProbe:
             httpGet:
-              path: /
+              path: /__heartbeat__
               port: {{ .Values.django.port }}
               httpHeaders:
                 - name: "Host"
@@ -52,13 +52,23 @@ spec:
             periodSeconds: 30
           readinessProbe:
             httpGet:
-              path: /
+              path: /__lbheartbeat__
               port: {{ .Values.django.port }}
               httpHeaders:
                 - name: "Host"
                   value: "{{ .Values.ingress.host}}"
             initialDelaySeconds: 5
             periodSeconds: 5
+          startupProbe:
+            exec:
+              command:
+                - python3
+                - manage.py
+                - migrate
+                - --check
+            initialDelaySeconds: 5
+            periodSeconds: 5
+            timeoutSeconds: 30
           env:
             {{- include "jenny.envs" . | nindent 12 }}
             - name: "UWSGI_PORT"
@@ -79,6 +89,12 @@ spec:
             - name: nginx
               mountPath: /etc/nginx
               readOnly: true
+          livenessProbe:
+            httpGet:
+              path: /__status__
+              port: 5000
+            initialDelaySeconds: 15
+            periodSeconds: 30
       volumes:
         - name: {{ .Values.volumes.media.name }}
           persistentVolumeClaim: