Comments (5)
readams
commented on August 11, 2024
Usually this would indicate your host networking is not set up correctly, but you can get more information by looking at the logs for aci-containers host agent.
kubectl -n kube-system logs aci-containers-host-k1jxx -c aci-containers-host
kubectl -n kube-system logs aci-containers-host-k1jxx -c opflex-agent
kubectl -n kube-system logs aci-containers-host-k1jxx -c mcast-daemon
These containers are designed to kill themselves if the environment is not set up correctly to aid diagnosis. For more detailed support, we can have a Cisco TME reach out to you.
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yoongseong
commented on August 11, 2024
Thanks for the advice. After fixing the MTU issue, aci-containers-host-k1jxx in is running now. But still aci-containers-controller is in pending status and kube-dns shows rpc error.
[root@k8s-master ~]# kubectl get pods --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system aci-containers-controller-2834261735-7719d 0/1 Pending 0 1d
kube-system aci-containers-host-k1jxx 3/3 Running 293 1d
kube-system aci-containers-openvswitch-dmwbf 1/1 Running 4 1d
kube-system etcd-k8s-master 1/1 Running 4 1d
kube-system kube-apiserver-k8s-master 1/1 Running 4 1d
kube-system kube-controller-manager-k8s-master 1/1 Running 4 1d
kube-system kube-dns-2617979913-54372 0/3 rpc error: code = 2 desc = failed to start container "b68fc34e0c2d770655ad065ce4193242aedc7d29d23f25753d769500e37cec40": Error response from daemon: {"message":"cannot join network of a non running container: 999ed6cc9dd7c04988d5f806b217c245a8edb905ef6f426d57f2793cbe58be7e"} 9 1d
kube-system kube-proxy-5fhm4 1/1 Running 4 1d
kube-system kube-scheduler-k8s-master 1/1 Running 4 1d
[root@k8s-master ~]#
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readams
commented on August 11, 2024
You can use kubectl describe to find out why a pod is in pending state.
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yoongseong
commented on August 11, 2024
Thanks. The issue is resolved by including the master node to schedule pods. As documented in k8s:
By default, your cluster will not schedule pods on the master for security reasons.
Just wonder is it a must for master node to schedule pod if we would like to integrate ACI with k8s? By looking at the steps, we have to install a pod network using kubectl apply -f <add-on.yaml> before we can add new nodes to the cluster.
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readams
commented on August 11, 2024
You can add nodes before you apply the networking plugin, and in any event you don't need the networking plugin to be running until you need to run pods, so it's not required to run pods on the master node.
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Related Issues (20)
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