We have our cluster setup in GKE and scaling our pods with 'external metrics' from stack-drive. The scaling works fine, but when I try to see the status with command
$ kubectl get hpa
It shows 'unknown type' in TARGET instead of the actual value as below.
NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE
accounts-service Deployment/accounts-service <unknown type> 1 200 1 15dMy current kubectl version shows as
$ kubectl version
Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.6", GitCommit:"6260bb08c46c31eea6cb538b34a9ceb3e406689c", GitTreeState:"clean", BuildDate:"2017-12-21T06:34:11Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"11+", GitVersion:"v1.11.5-gke.4", GitCommit:"0c81dc1e8c26fa2c47e50072dc7f98923cb2109c", GitTreeState:"clean", BuildDate:"2018-12-07T00:22:06Z", GoVersion:"go1.10.3b4", Compiler:"gc", Platform:"linux/amd64"}Has anyone faced similar problem?
Actually upgrading the kubectl client in my machine solved this issue.
I followed the steps per the accepted answer and it showed the 'External Metric' as expected. How to upgrade kubectl client version
Posting it just in case someone else face the same issue.
In my case I had to add the following flag to kube-controller of all masters.
horizontalPodAutoscalerUseRestClients: true