CRITICAL nova [-] Unhandled error: gaierror: [Errno -5] No address associated with hostname
I get the following error when restarting the novnc service
systemctl restart nova-novncproxy.service
In /var/log/nova/nova-novncproxy.log I see
CRITICAL nova [-] Unhandled error: gaierror: [Errno -5] No address associated with hostname
This is caused by a wrong entry in nova.conf on the controller. Check the [vnc] section
novncproxy_base_url=http://controller:6080/vnc_auto.html
The error message suggests a root cause. Is there an IP address for controller?