Pods Deployed Using Multus Plugin Fail to Have Container Added to Network After Upgrading to Whereabouts:v0.6-pmk-6

Problem

It is observed that the stateful sets pods were failing to come up with the below error.

Warning  FailedCreatePodSandBox  4m31s (x1188 over 7h15m)  kubelet  (combined from similar events): Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "2aaXXXXXXXXXXXXXXXXX42": plugin type="multus" name="multus-cni-network" failed (add): [signaling-cvi/sip-frontend-0:mirror-dhcp-vlan-372-10.165.186.128-25]: error adding container to network "mirror-dhcp-vlan-372-10.165.186.128-25": error at storage engine: k8s get error: client rate limiter Wait returned an error: rate: Wait(n=1) would exceed context deadline

Cluster is upgraded to K8s v1.24, new job pods for the ip-reconciler cronjob were unable to start.

$ kubectl get jobs -n kube-system | grep ip-reconciler
ip-reconciler-28333105                1/1           8s         16d
ip-reconciler-28333110                1/1           8s         16d
ip-reconciler-28333115                1/1           8s         16d
ip-reconciler-28357405                0/1           3m31s      3m31s

A manual run of the job produced an error with regards to file not being present in the container image, e.g.

7s         Warning   Failed                 pod/ip-reconciler-manual-bkxwd                Error: failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: exec: "/ip-reconciler": stat /ip-reconciler: no such file or directory: unknown

Image: docker.io/platform9/whereabouts:v0.6-pmk-6

Command:
     /ip-reconciler
     -kubeconfig=/host/etc/cni/net.d/whereabouts.d/whereabouts.kubeconfig

Environment

  • Platform9 Managed Kubernetes - v5.6 and Higher

  • Managed Platform9 Edge Cloud - v5.6 and Higher.

Answer

This is a know issue, Platform9 has a jira filed AIR-1268 to track and provide a permanent solution for this issue.

Workaround

The workaround is to patch the networkplugins.plumber.k8s.pf9.io CRD for the K8s cluster associated with respective management plane to use the Whereabouts v0.4.10 image.

# kubectl patch networkplugins networkplugins-devtestcluster -n <NAMESPACE> --patch '{"spec": {"plugins": {"whereabouts": {"whereaboutsImage": "docker.io/platform9/whereabouts:v0.4.10"}}}}' --type merge -o yaml

Additional Information

To track progress of the permanent solution for this issue, open a support ticket mentioning the jira ID AIR-1268.

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Pods Deployed Using Multus Plugin Fail to Have Container Added to Network After Upgrading to Whereabouts:v0.6-pmk-6ProblemEnvironmentAnswerWorkaroundAdditional Information