Feature/allow resource allocation (#2216)

Problem: When using autoscaling kubernetes clusters based on resource requests (like Karpenter implemenations or fargate kind of setups), pods will get evicted when the request 0 cpu and memory whilst the node it landed on is strapped for one of those resources, this change will give use the capability to set resource requests & limits in a way users see fit.

Solution: Allow use to set resource values

Author: anwbtom

charts/nginx-gateway-fabric/README.md

@@ -290,6 +290,7 @@ The following table lists the configurable parameters of the NGINX Gateway Fabri
 | `nginxGateway.readinessProbe.initialDelaySeconds` | The number of seconds after the Pod has started before the readiness probes are initiated. | int | `3` |
 | `nginxGateway.readinessProbe.port` | Port in which the readiness endpoint is exposed. | int | `8081` |
 | `nginxGateway.replicaCount` | The number of replicas of the NGINX Gateway Fabric Deployment. | int | `1` |
+| `nginxGateway.resources` | The resource requests and/or limits of the nginx-gateway container. | object | `{}` |
 | `nginxGateway.securityContext.allowPrivilegeEscalation` | Some environments may need this set to true in order for the control plane to successfully reload NGINX. | bool | `false` |
 | `nodeSelector` | The nodeSelector of the NGINX Gateway Fabric pod. | object | `{}` |
 | `service.annotations` | The annotations of the NGINX Gateway Fabric service. | object | `{}` |

charts/nginx-gateway-fabric/templates/deployment.yaml

@@ -90,6 +90,10 @@ spec:
         lifecycle:
         {{- toYaml .Values.nginxGateway.lifecycle | nindent 10 }}
         {{- end }}
+        {{- if .Values.nginxGateway.resources }}
+        resources:
+        {{- toYaml .Values.nginxGateway.resources | nindent 10 }}
+        {{- end }}
         ports:
         {{- if .Values.metrics.enable }}
         - name: metrics

charts/nginx-gateway-fabric/values.yaml

@@ -64,6 +64,9 @@ nginxGateway:
   # -- The lifecycle of the nginx-gateway container.
   lifecycle: {}
 
+  # -- The resource requests and/or limits of the nginx-gateway container.
+  resources: {}
+
   # -- extraVolumeMounts are the additional volume mounts for the nginx-gateway container.
   extraVolumeMounts: []