0

I am using cilium as my CNI. I have successfully run the cilium connectivity test and all tests pass. My nodegroup schedules a t3.small nodes (3 of them), which allows me to run 11 pods without Ipv4Prefix enabled. Now I have enabled Ipv4Prefix by running

kubectl set env daemonset aws-node -n kube-system ENABLE_PREFIX_DELEGATION=true

and when I run:

kubectl describe daemonset -n kube-system aws-node | grep ENABLE_PREFIX_DELEGATION

I get :

  ENABLE_PREFIX_DELEGATION:  true
  ENABLE_PREFIX_DELEGATION:  true
  ENABLE_PREFIX_DELEGATION:  true

I have also installed cilium by running the following:

helm install cilium cilium/cilium --version 1.15.0 --namespace kube-system --set eni.enabled=true --set ipam.mode=eni --set eni.awsEnablePrefixDelegation=true --set egressMasqueradeInterfaces=eth0

and patched the daemonset like so:

kubectl -n kube-system patch daemonset aws-node --type='strategic' -p='{"spec":{"template":{"spec":{"nodeSelector":{"io.cilium/aws-node-enabled":"true"}}}}}'

I can see all the pods are running fine.

enter image description here

I can also see that prefix has been assigned to the eni:

aws ec2 describe-network-interfaces --region eu-west-2 --network-interface-ids eni-0eb1aff34572830d6 | grep Ipv4Prefix
    "Ipv4Prefixes": [
                "Ipv4Prefix": "10.0.1.112/28"
                "Ipv4Prefix": "10.0.1.224/28"

QUESTION

I know the t3.small instances can have a max pod of 110, however, I still cannot schedule more than 11 pods per instance. What could be the issue?

ERROR

 0/3 nodes are available: 3 Too many pods. preemption: 0/3 nodes are available: 3 No preemption victims found for incoming pod.

this should not be the case when IPV4 prefix is enabled

2
  • What does it mean you cannot schedule? What are the errors you are getting? Did you check with kubectl top node if you have sufficient resources available? Feb 10 at 14:28
  • no nodes available to have another pod @user23204747
    – eagercoder
    Feb 12 at 2:12

0

You must log in to answer this question.