Compute node went into error state

Issue

• Compute node went into error state after yum update:

  (undercloud) [stack@tmostackdir-np1 ~]$ nova list
  +--------------------------------------+------------------------+--------+------------+-------------+----------------------+
  | ID                                   | Name                   | Status | Task State | Power State | Networks             |
  +--------------------------------------+------------------------+--------+------------+-------------+----------------------+
  | e0bdb9c2-e754-4098-af96-a010ab65a3b4 | overcloud-compute-0    | ERROR  | -          | Running     | ctlplane=10.xxx.x.20 |
  | c0f8797a-c1c1-4bd4-9d45-93f4f62ed761 | overcloud-controller-0 | ACTIVE | -          | Running     | ctlplane=10.xxx.x.22 |
  +--------------------------------------+------------------------+--------+------------+-------------+----------------------+
  

• Nova list commands not working.

  (undercloud) [stack@tmostackdir-np1 ~]$ nova list
  ERROR (ClientException): The server has either erred or is incapable of performing the requested operation. (HTTP 500) (Request-ID: req-05298b53-bf24-410d-98d3-917b5e4623dc)
  

Note: To upgrade your packages in openstack environment minor update is recommended. Please follow Redhat official documentation to do a minor upgrade.