OpenStack known issues

This section lists the OpenStack known issues with workarounds for the Mirantis OpenStack for Kubernetes release 21.6.


[6912] Octavia load balancers may not work properly with DVR

When Neutron is deployed in the DVR mode, Octavia load balancers may not work correctly. The symptoms include both failure to properly balance traffic and failure to perform an amphora failover.


[16495] Failure to reschedule OpenStack deployment pods after a node recovery

Fixed in MOS 22.1

Kubernetes does not reschedule OpenStack deployment pods after a node recovery.

As a workaround, delete all pods of the deployment:

for i in $(kubectl -n openstack get deployments |grep -v NAME | awk '{print $1}');
do
kubectl -n openstack rollout restart deployment/$i;
done

Once done, the pods will respawn automatically.


[18713] Inability to remove a Glance image after an unsuccessful instance spawn

Fixed in MOS 22.1

When image signature verification is enabled and the signature is incorrect on the image, it is impossible to remove a Glance image right after an unsuccessful instance spawn attempt. As a workaround, wait for at least one minute before trying to remove the image.


[19274] Horizon container missing proxy variables

Fixed in MOS 22.1

Horizon container is missing proxy variables. As a result, it is not possible to create a Heat stack by specifying the Heat template as a URL link. As a workaround, use a different upload method and specify the file from a local folder.


[19065] Octavia load balancers lose Amphora VMs after failover

If an Amphora VM does not respond or responds too long to heartbeat requests, the Octavia load balancer automatically initiates a failover process after 60 seconds of unsuccessful attempts. Long responses of an Amphora VM may be caused by various events, such as a high load on the OpenStack compute node that hosts the Amphora VM, network issues, system service updates, and so on. After a failover, the Amphora VMs may be missing in the completed Octavia load balancer.

Workaround:

  • If your deployment is already affected, manually restore the work of the load balancer by recreating the Amphora VM:

    1. Define the load balancer ID:

      openstack loadbalancer amphora list --column loadbalancer_id --format value --status ERROR
      
    2. Start the load balancer failover:

      openstack loadbalancer failover <Load balancer ID>
      
  • To avoid an automatic failover start that may cause the issue, set the heartbeat_timeout parameter in the OpenStackDeployment CR to a large value in seconds. The default is 60 seconds. For example:

    spec:
      services:
        load-balancer:
          octavia:
            values:
              conf:
                octavia:
                  health_manager:
                    heartbeat_timeout: 31536000