nova keypair-list generates ERROR (ClientException): Unexpected API Error.

[Serguei Bezverkhi]

On executing nova keypair-list, the following error gets generated:

nova keypair-list
ERROR (ClientException): Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<class 'sqlalchemy.exc.OperationalError'> (HTTP 500) (Request-ID: req-5ff60d4d-67e3-4f2d-9912-fd4dcb833165)

[Serguei Bezverkhi (sbezverk)]

rpm -qa | grep nova
openstack-nova-conductor-12.0.0-1.el7.noarch
python-novaclient-2.30.1-1.el7.noarch
openstack-nova-console-12.0.0-1.el7.noarch
openstack-nova-common-12.0.0-1.el7.noarch
openstack-nova-scheduler-12.0.0-1.el7.noarch
openstack-nova-compute-12.0.0-1.el7.noarch
python-nova-12.0.0-1.el7.noarch
openstack-nova-novncproxy-12.0.0-1.el7.noarch
openstack-nova-api-12.0.0-1.el7.noarch
openstack-nova-cert-12.0.0-1.el7.noarch

[Serguei Bezverkhi (sbezverk)]

Please ignore it, the issue was related to mysql number of connections. Please close this bug.

Serguei