[SOLVED] AWS EKS - Only 2 pod can be launched

AWS EKS - Only 2 pod can be launched - Too many pods error

Each t2.micro node should be able to run 4 pods according to this article and the command kubectl get nodes -o yaml | grep pods output.

But I have two nodes and I can launch only 2 pods. 3rd pod gets stuck with the following error message.

Could it be the application using too much resource and as a result its not launching more pods? If that was the case it could indicate Insufficient CPU or memory.

Events:
  Type     Reason            Age                From               Message
  ----     ------            ----               ----               -------
  Warning  FailedScheduling  33s (x2 over 33s)  default-scheduler  0/2 nodes are available: 2 Too many pods.

Solution

According to the AWS documentation IP addresses per network interface per instance type the t2.micro only has 2 Network Interfaces and 2 IPv4 addresses per interface. So you are right, only 4 IP addresses.

But EKS deploys DaemonSets for e.g. CoreDNS and kube-proxy, so some IP addresses on each node is already allocated.