Tungsten Fabric known issues¶
This section lists the Tungsten Fabric (TF) known issues with workarounds for the Mirantis OpenStack for Kubernetes release 23.1. For TF limitations, see Tungsten Fabric known limitations.
 ‘tf-vrouter-agent’ readiness probe failed (No Configuration for self)
 TF pods switch to CrashLoopBackOff after a simultaneous reboot
 ‘tf-vrouter-agent’ readiness probe failed (No Configuration for self)¶
Execution of the TF Heat Tempest test
can result in lost vRouter configuration. This causes the
readiness probe to fail with the following error message:
"Readiness probe failed: vRouter is PRESENT contrail-vrouter-agent: initializing (No Configuration for self)"
As a result, vRouters may have an incomplete routing table making some services, such as metadata, become unavailable.
tf_heat_tempest_plugintests with global configuration to the exclude list in the
spec: tempest: tempest: values: conf: blacklist: - (?:tf_heat_tempest_plugin.tests.functional.test_global.*)
If you ran
tf-vrouter-agentpods moved to the
errorstate with the above error, re-create these pods through deletion:
kubectl -n tf delete pod tf-vrouter-agent-*
 TF pods switch to CrashLoopBackOff after a simultaneous reboot¶
Rebooting all Cassandra cluster TFConfig or TFAnalytics nodes, maintenance, or other circumstances that cause the Cassandra pods to start simultaneously may cause a broken Cassandra TFConfig and/or TFAnalytics cluster. In this case, Cassandra nodes do not join the ring and do not update the IPs of the neighbor nodes. As a result, the TF services cannot operate Cassandra cluster(s).
To verify that a Cassandra cluster is affected:
Run the nodetool status command specifying the
analytics cluster and the replica number:
kubectl -n tf exec -it tf-cassandra-<config/analytics>-dc1-rack1-<replica number> -c cassandra -- nodetool status
Example of system response with outdated IP addresses:
Datacenter: DC1 =============== Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load Tokens Owns (effective) Host ID Rack DN <outdated ip> ? 256 64.9% a58343d0-1e3f-4d54-bcdf-9b9b949ca873 r1 DN <outdated ip> ? 256 69.8% 67f1d07c-8b13-4482-a2f1-77fa34e90d48 r1 Datacenter: dc1 =============== Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load Tokens Owns (effective) Host ID Rack UN <actual ip> 3.84 GiB 256 65.2% 7324ebc4-577a-425f-b3de-96faac95a331 rack1
Manually delete the Cassandra pod from the failed
cluster to re-initiate the bootstrap process for one of the Cassandra nodes:
kubectl -n tf delete pod tf-cassandra-<config/analytics>-dc1-rack1-<replica_num>