feat: support configure readiness and liveness probe for gateway (#186)

Signed-off-by: Nic <[email protected]>

Author: nic-6443

charts/gateway/Chart.yaml

@@ -14,7 +14,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.2.17
+version: 0.2.18
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to

charts/gateway/README.md

@@ -175,6 +175,8 @@ The command removes all the Kubernetes components associated with the chart and
 | gateway.ingress | object | `{"annotations":{},"enabled":false,"hosts":[{"host":"apisix.local","paths":[]}],"tls":[]}` | Using ingress access API7 Gateway service |
 | gateway.ingress.annotations | object | `{}` | Ingress annotations |
 | gateway.labelsOverride | object | `{}` | Override default labels assigned to API7 Gateway gateway resources |
+| gateway.livenessProbe | object | `{}` | kubernetes liveness probe. |
+| gateway.readinessProbe | object | `{}` | kubernetes readiness probe, we will provide a probe based on tcpSocket to gateway's HTTP port by default. |
 | gateway.stream | object | `{"enabled":false,"only":false,"tcp":[],"udp":[]}` | API7 Gateway service settings for stream. L4 proxy (TCP/UDP) |
 | gateway.tls | object | `{"additionalContainerPorts":[],"certCAFilename":"","containerPort":9443,"enabled":true,"existingCASecret":"","http2":{"enabled":true},"servicePort":443,"sslProtocols":"TLSv1.2 TLSv1.3"}` | API7 Gateway service settings for tls |
 | gateway.tls.additionalContainerPorts | list | `[]` | Support multiple https ports, See [Configuration](https://github.com/apache/apisix/blob/0bc65ea9acd726f79f80ae0abd8f50b7eb172e3d/conf/config-default.yaml#L99) |

charts/gateway/templates/_pod.tpl

@@ -117,6 +117,10 @@ spec:
         {{- end }}
         {{- end }}
         {{- end }}
+      {{- if .Values.gateway.readinessProbe }}
+      readinessProbe:
+      {{- toYaml .Values.gateway.readinessProbe | nindent 8 }}
+      {{- else }}
       readinessProbe:
         failureThreshold: 6
         initialDelaySeconds: 10
@@ -125,6 +129,11 @@ spec:
         tcpSocket:
           port: {{ .Values.gateway.http.containerPort }}
         timeoutSeconds: 1
+      {{- end }}
+      {{- if .Values.gateway.livenessProbe }}
+      livenessProbe:
+      {{- toYaml .Values.gateway.livenessProbe | nindent 8 }}
+      {{- end }}
       lifecycle:
         preStop:
           exec:

charts/gateway/values.yaml

@@ -240,6 +240,10 @@ gateway:
   # annotations:
   #   service.beta.kubernetes.io/aws-load-balancer-type: nlb
   externalIPs: []
+  # -- kubernetes readiness probe, we will provide a probe based on tcpSocket to gateway's HTTP port by default.
+  readinessProbe: {}
+  # -- kubernetes liveness probe.
+  livenessProbe: {}
   # -- API7 Gateway service settings for http
   http:
     enabled: true