OpenStack known issues

This section lists the OpenStack known issues with workarounds for the Mirantis OpenStack for Kubernetes release 23.2.

[25124] MPLSoGRE encapsulation has limited throughput

Fixed in 23.3

Multiprotocol Label Switching over Generic Routing Encapsulation (MPLSoGRE) provides limited throughput while sending data between VMs up to 38 Mbps, as per Mirantis tests.

As a workaround, switch the encapsulation type to VXLAN in the OpenStackDeployment custom resource:

                mpls_over_gre: "False"
                vxlan_encap: "True"

[31186,34132] Pods get stuck during MariaDB operations

Due to the upstream MariaDB issue, during MariaDB operations on a management cluster, Pods may get stuck in continuous restarts with the following example error:

[ERROR] WSREP: Corrupt buffer header: \
addr: 0x7faec6f8e518, \
seqno: 3185219421952815104, \
size: 909455917, \
ctx: 0x557094f65038, \
flags: 11577. store: 49, \
type: 49


  1. Create a backup of the /var/lib/mysql directory on the mariadb-server Pod.

  2. Verify that other replicas are up and ready.

  3. Remove the galera.cache file for the affected mariadb-server Pod.

  4. Remove the affected mariadb-server Pod or wait until it is automatically restarted.

After Kubernetes restarts the Pod, the Pod clones the database in 1-2 minutes and restores the quorum.

[34897] Machines are not available after Victoria to Wallaby update

Fixed in 23.3

After update of OpenStack from Victoria to Wallaby, the machines from nodes with DPDK become unavailable.


  1. Search for the nodes with the OVS ports:

    for i in $(kubectl -n openstack get pods |grep openvswitch-vswitchd | awk '{print $1}'); do kubectl -n openstack exec -it -c openvswitch-vswitchd $i -- ovs-vsctl show |grep -q "tag: 4095" && echo $i; done
  2. Restart the neutron-ovs-agent agent on the affected nodes.