Unable to assign public ip address to AKS: pending forever - azure

Question

I allocated an IP address for my resource group as the following:
az network public-ip create --resource-group myResourceGroup --name ipName --allocation-method static
Now, I'd like to assign it to my AKS so I just altered the yaml as it follows:
apiVersion: v1
kind: Service
metadata:
name: nginx
spec:
loadBalancerIP: xx.xx.xxx.xxx <--the ip generated before
type: LoadBalancer
ports:
- port: 80
selector:
app: nginx-sgr
Then I run:
kubectl apply -f mykube.yaml
But it appears to be stuck:
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
nginx LoadBalancer 10.0.77.234 <pending> 80:32320/TCP 79m
By executing describe I get indeed the following:
Warning CreatingLoadBalancerFailed 21m (x19 over 86m) service-controller Error creating
load balancer (will retry): failed to ensure
load balancer for service default/nginx: user supplied IP Address
xx.xx.xxx.xxx was not found in resource group
MC_**myResourceGroup**_myAKSCluster_westeurope
please note that it seems it's searching in a resource group that is composed by the resource group I specified in the first command (the same as kubernates is) and other information...what am I doing wrong?

Answer 1

As I know, the possible reason is that you need to assign your AKS the permission of the resource group which you create the public IP if you create it in another group. For more details, see Use a static IP address outside of the node resource group. And you need to add the annotations like below:
apiVersion: v1
kind: Service
metadata:
annotations:
service.beta.kubernetes.io/azure-load-balancer-resource-group: myResourceGroup
name: azure-load-balancer
spec:
loadBalancerIP: 40.121.183.52
type: LoadBalancer
ports:
- port: 80
selector:
app: azure-load-balancer
Or you can just create the public IP in your AKS cluster nodes group. For you, the group name can be found in the error you provide: MC_**myResourceGroup**_myAKSCluster_westeurope.