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I'm trying to create node group on EKS Cluster(region = ap-south-1) but it is failing to join cluster. Health issues : NodeCreationFailure Instances failed to join the kubernetes cluster

I found that it may be because AWS EKS add-on(coredns) for Cluster is degraded. I tried to create new Cluster but it shows same status for add-on as degraded . Health issues shows: InsufficientNumberOfReplicas The add-on is unhealthy because it doesn't have the desired number of replicas.

And in the same region other Clusters with node group are working fine.Their all add-ons are in Active State. I'm creating cluster from console.

uni
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1 Answers1

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Issue is resolved , as my NAT gateway was the problem. the subnet in which NAT was present, it was not associated with my route table. After i added NAT in my route table, i created new node group and it was able to join the cluster and coredns pods also got deployed.

uni
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