Get External IP Address From Kubectl Using Powershell

Case

I wanted to link Azure Front Door and AKS, so I just tried to get the EXTERNAL IP assigned to AKS and do this and that.

Example from Microsoft Documentation

Way how do it …

There may be various ways, but this time I will get it from the kubectl command.

It seems that it can be obtained from the Public IP assigned to the load balancer of the node pool, but it seems to be troublesome to search if there are multiple load balancers, so I simply got the EXTERNAL IP with kubectl get serivce.

Result of normal kubectl get service

> kubectl get service
NAME               TYPE           CLUSTER-IP   EXTERNAL-IP    PORT(S)        AGE
azure-vote-back    ClusterIP      10.0.37.27   <none>         6379/TCP       56m
azure-vote-front   LoadBalancer   10.0.37.127   XXX.XXX.XXX.XXX    80:31284/TCP   56m

Since EXTERNAL-IP exists in azure-vote-front, specify service and display it independently.

> kubectl get service azure-vote-front
NAME               TYPE           CLUSTER-IP   EXTERNAL-IP    PORT(S)        AGE
azure-vote-front   LoadBalancer   10.0.37.127   XXX.XXX.XXX.XXX    80:31284/TCP   58m

Take out only EXTERNAL-IP and put it in an appropriate variable as follows.

> $EXTERNAL_IP=$(kubectl get service | ?{ $_ -match '^azure-vote-front'} | Select-Object -first 1 | %{$_ -split "\s+"})[3]
> echo $EXTERNAL_IP
XXX.XXX.XXX.XXX