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Bug
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Resolution: Unresolved
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Major
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None
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4.17
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None
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None
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False
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Description of problem:
Setting an ovn-kubernetes secondary network as a pod's default network
using the `v1.multus-cni.io/default-network` annotation causes the pod
to become stuck in the ContainerCreating state with errors in its event log.
Version-Release number of selected component (if applicable):
4.17.4 (initial reported as MTV bug (https://issues.redhat.com/browse/MTV-1645) with OpenShift 4.16.8)
How reproducible:
100%
Steps to Reproduce:
1. Create an NAD for an ovn-kubernetes network.
apiVersion: k8s.cni.cncf.io/v1 kind: NetworkAttachmentDefinition metadata: name: flatl2 namespace: default spec: config: | { "cniVersion": "0.3.1", "name": "flatl2", "netAttachDefName": "default/flatl2", "topology": "layer2", "type": "ovn-k8s-cni-overlay" }
2. Create a pod with that network as the default network, using the `v1.multus-cni.io/default-network` annotation.
apiVersion: v1 kind: Pod metadata: annotations: v1.multus-cni.io/default-network: default/flatl2 name: example namespace: default spec: containers: - name: ubuntu image: ubuntu command: ["yes"]
Actual results:
The pod becomes stuck in a ContainerCreating state with error messages in the pod event log:
Failed to create pod sandbox: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_example_default_c82931a7-759c-4254-924f-c95c13862d2e_0(df668fb94f572bee64e19805732463e44221d30c25e4c7e3d2b7848127f575d3): error adding pod default_example to CNI network "multus-cni-network": plugin type="multus-shim" name="multus-cni-network" failed (add): CmdAdd (shim): CNI request failed with status 400: 'ContainerID:"df668fb94f572bee64e19805732463e44221d30c25e4c7e3d2b7848127f575d3" Netns:"/var/run/netns/31c9357a-2583-44ff-9925-07f4ce40bf5c" IfName:"eth0" Args:"IgnoreUnknown=1;K8S_POD_NAMESPACE=default;K8S_POD_NAME=example;K8S_POD_INFRA_CONTAINER_ID=df668fb94f572bee64e19805732463e44221d30c25e4c7e3d2b7848127f575d3;K8S_POD_UID=c82931a7-759c-4254-924f-c95c13862d2e" Path:"" ERRORED: error configuring pod [default/example] networking: [default/example/c82931a7-759c-4254-924f-c95c13862d2e:flatl2]: error adding container to network "flatl2": CNI request failed with status 400: '[default/example df668fb94f572bee64e19805732463e44221d30c25e4c7e3d2b7848127f575d3 network flatl2 NAD default/flatl2] [default/example df668fb94f572bee64e19805732463e44221d30c25e4c7e3d2b7848127f575d3 network flatl2 NAD default/flatl2] failed to get pod annotation: timed out waiting for annotations: context deadline exceeded ' ': StdinData: {"binDir":"/var/lib/cni/bin","clusterNetwork":"/host/run/multus/cni/net.d/10-ovn-kubernetes.conf","cniVersion":"0.3.1","daemonSocketDir":"/run/multus/socket","globalNamespaces":"default,openshift-multus,openshift-sriov-network-operator,openshift-cnv","logLevel":"verbose","logToStderr":true,"name":"multus-cni-network","namespaceIsolation":true,"type":"multus-shim"}
Expected results:
The pod is created successfully, with the network specified in the annotation as its default network.
Additional info:
See https://issues.redhat.com/browse/MTV-1645 for details on the impact of this bug on MTV.
- causes
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- ASSIGNED
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