nginx-ingress: reduce workers to save memory

README.md

@@ -195,6 +195,21 @@ deployment.apps/my-release-ingress-nginx-controller   1/1     1            1
 NAME                                                             DESIRED   CURRENT   READY   AGE
 replicaset.apps/my-release-ingress-nginx-controller-695774d99c   1         1         1       110s
 ```
+As nginx ingress is hungry for memory, let´s reduce the number of workers to 1:
+```
+kubectl -n ingress-nginx edit configmap my-release-ingress-nginx-controller
+
+apiVersion: v1
+<<<ADD BEGINN>>>
+data:
+  worker-processes: "1"
+<<<ADD END>>>
+kind: ConfigMap
+[...]
+```
+Finally the deployment needs to be restarted:
+
+`kubectl -n ingress-nginx rollout restart deployment my-release-ingress-nginx-controller`
 
 # Cert-Manager (references ingress controller) <a name="cert-manager"></a>
 ## Installation <a name="cert-manager-install"></a>