Set default resource requests limits

charts/ingress-nginx/values.yaml

@@ -224,13 +224,17 @@ controller:
 
   minAvailable: 1
 
-  resources: {}
+  # Define requests resources to avoid probe issues due to CPU utilization in busy nodes
+  # ref: https://github.com/kubernetes/ingress-nginx/issues/4735#issuecomment-551204903
+  # Ideally, there should be no limits.
+  # https://engineering.indeedblog.com/blog/2019/12/cpu-throttling-regression-fix/
+  resources:
   #  limits:
   #    cpu: 100m
-  #    memory: 64Mi
+  #    memory: 90Mi
-  #  requests:
+    requests:
-  #    cpu: 100m
+      cpu: 100m
-  #    memory: 64Mi
+      memory: 90Mi
 
   autoscaling:
     enabled: false