[stable/airflow] Add readinessProbe (#15138)

* Add readinessProbe

Signed-off-by: Khwunchai Jaengsawang <khwunchai.j@ku.th>

* Bump chart version

Signed-off-by: Khwunchai Jaengsawang <khwunchai.j@ku.th>

stable/airflow/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Airflow is a platform to programmatically author, schedule and monitor workflows
 name: airflow
-version: 4.0.1
+version: 4.0.2
 appVersion: 1.10.3
 icon: https://airflow.apache.org/_images/pin_large.png
 home: https://airflow.apache.org/

stable/airflow/requirements.lock

@@ -0,0 +1,9 @@
+dependencies:
+- name: postgresql
+  repository: https://kubernetes-charts.storage.googleapis.com/
+  version: 0.13.1
+- name: redis
+  repository: https://kubernetes-charts.storage.googleapis.com/
+  version: 7.0.0
+digest: sha256:b69868c9f0a2f73e76764c7aef0e738d77c4af2010d0d2b808fa82bedd239389
+generated: "2019-05-23T17:08:16.898581+07:00"

stable/airflow/templates/deployments-web.yaml

@@ -152,6 +152,15 @@ spec:
             timeoutSeconds: 1
             successThreshold: 1
             failureThreshold: 5
+          readinessProbe:
+            httpGet:
+              path: "{{ .Values.ingress.web.path }}/health"
+              port: web
+            initialDelaySeconds: {{ .Values.web.initialDelaySeconds }}
+            periodSeconds: 60
+            timeoutSeconds: 1
+            successThreshold: 1
+            failureThreshold: 5
 {{- if .Values.airflow.extraContainers }}
 {{ toYaml .Values.airflow.extraContainers | indent 8 }}
 {{- end }}