This KB explain how to resolve the issue when one of the controller nodes is taking long time to display the contrail-status output.

• Customer using Contrail Networking deployed with 3 Controller nodes running with 2011.297 version. 
• When user tried get contrail-status output on of the controller node, command output took around 8 minutes.
• Problem is only observed on specific controller node and other controller nodes didn't exhibit the problem. 

• The problematic controller node has invalid entries in /etc/resolv.conf that cause fqdn resolving long time.
• On the problematic controller node , edit the "/etc/resolv.conf"  file with valid name server entires that is in line with other 2 controller nodes.