containers fail to start on overcloud controller due to 'The maximum number of active connections for UID 0 has been reached'

Issue

• After yum update -y and reboot on overcloud controller node, containers fail to start due to The maximum number of active connections for UID 0 has been reached :

Dec 20 02:47:14 overcloud-controller-0 dbus-daemon[2561]: [system] The maximum number of active connections for UID 0 has been reached (max_connections_per_user=256)
Dec 20 02:47:14 overcloud-controller-0 dbus-daemon[2561]: [system] The maximum number of active connections for UID 0 has been reached (max_connections_per_user=256)
Dec 20 02:47:14 overcloud-controller-0 dbus-daemon[2561]: [system] The maximum number of active connections for UID 0 has been reached (max_connections_per_user=256)
Dec 20 02:47:14 overcloud-controller-0 dbus-daemon[2561]: [system] The maximum number of active connections for UID 0 has been reached (max_connections_per_user=256)
Dec 20 02:47:14 overcloud-controller-0 dbus-daemon[2561]: [system] The maximum number of active connections for UID 0 has been reached (max_connections_per_user=256)
Dec 20 02:47:14 overcloud-controller-0 dbus-daemon[2561]: [system] The maximum number of active connections for UID 0 has been reached (max_connections_per_user=256)
Dec 20 02:47:14 overcloud-controller-0 dbus-daemon[2561]: [system] The maximum number of active connections for UID 0 has been reached (max_connections_per_user=256)
Dec 20 02:47:14 overcloud-controller-0 dbus-daemon[2561]: [system] The maximum number of active connections for UID 0 has been reached (max_connections_per_user=256)

• When this happens, it's not possible to login into the controller again and podman ps command timed out