I confirmed that same error happens on placement-api if restart only keystone to fix this.
[Call Trace]
./stack.sh:1307:start_placement
/opt/stack/devstack/lib/placement:179:start_placement_api
/opt/stack/devstack/lib/placement:174:die
[ERROR] /opt/stack/devstack/lib/placement:174 placement-api did not start
Error on exit
World dumping... see /opt/stack/logs/worlddump-2017-06-10-000932.txt for details
I confirmed that same error happens on placement-api if restart only keystone to fix this. sh:1307: start_placement devstack/ lib/placement: 179:start_ placement_ api devstack/ lib/placement: 174:die devstack/ lib/placement: 174 placement-api did not start logs/worlddump- 2017-06- 10-000932. txt for details
[Call Trace]
./stack.
/opt/stack/
/opt/stack/
[ERROR] /opt/stack/
Error on exit
World dumping... see /opt/stack/