Add lifecycle for controller container to helm chart (#3005)

Author: coolbry95

deployments/helm-chart/README.md

@@ -159,6 +159,7 @@ Parameter | Description | Default
 `controller.image.repository` | The image repository of the Ingress Controller. | nginx/nginx-ingress
 `controller.image.tag` | The tag of the Ingress Controller image. | 2.3.0
 `controller.image.pullPolicy` | The pull policy for the Ingress Controller image. | IfNotPresent
+`controller.lifecycle` | The lifecycle of the Ingress Controller pods. | {}
 `controller.config.name` | The name of the ConfigMap used by the Ingress Controller. | Autogenerated
 `controller.config.annotations` | The annotations of the Ingress Controller configmap. | {}
 `controller.config.entries` | The entries of the ConfigMap for customizing NGINX configuration. See [ConfigMap resource docs](https://docs.nginx.com/nginx-ingress-controller/configuration/global-configuration/configmap-resource/) for the list of supported ConfigMap keys. | {}

deployments/helm-chart/templates/controller-daemonset.yaml

@@ -72,6 +72,10 @@ spec:
       - name: {{ include "nginx-ingress.name" . }}
         image: {{ include "nginx-ingress.image" . }}
         imagePullPolicy: "{{ .Values.controller.image.pullPolicy }}"
+{{- if .Values.controller.lifecycle }}
+        lifecycle:
+{{ toYaml .Values.controller.lifecycle | indent 10 }}
+{{- end }}
         ports:
         - name: http
           containerPort: 80

deployments/helm-chart/templates/controller-deployment.yaml

@@ -77,6 +77,10 @@ spec:
       - image: {{ include "nginx-ingress.image" . }}
         name: {{ include "nginx-ingress.name" . }}
         imagePullPolicy: "{{ .Values.controller.image.pullPolicy }}"
+{{- if .Values.controller.lifecycle }}
+        lifecycle:
+{{ toYaml .Values.controller.lifecycle | indent 10 }}
+{{- end }}
         ports:
         - name: http
           containerPort: 80

deployments/helm-chart/values.yaml

@@ -58,6 +58,9 @@ controller:
     ## The pull policy for the Ingress Controller image.
     pullPolicy: IfNotPresent
 
+  ## The lifecycle of the Ingress Controller pods.
+  lifecycle: {}
+
   config:
     ## The name of the ConfigMap used by the Ingress Controller.
     ## Autogenerated if not set or set to "".

docs/content/installation/installation-with-helm.md

@@ -163,6 +163,7 @@ The following tables lists the configurable parameters of the NGINX Ingress Cont
 |``controller.image.digest`` | The digest of the Ingress Controller image. Digest has precedence over tag | None |
 |``controller.image.tag`` | The tag of the Ingress Controller image. | 2.3.0 |
 |``controller.image.pullPolicy`` | The pull policy for the Ingress Controller image. | IfNotPresent |
+|``controller.lifecycle`` | The lifecycle of the Ingress Controller pods. | {} |
 |``controller.config.name`` | The name of the ConfigMap used by the Ingress Controller. | Autogenerated |
 |``controller.config.entries`` | The entries of the ConfigMap for customizing NGINX configuration. See [ConfigMap resource docs](/nginx-ingress-controller/configuration/global-configuration/configmap-resource/) for the list of supported ConfigMap keys. | {} |
 |``controller.customPorts`` | A list of custom ports to expose on the NGINX ingress controller pod. Follows the conventional Kubernetes yaml syntax for container ports. | [] |