This is a known issue in how neutron passes security group rules thru messaging queue. There are several spec proposals for Juno to solve the issue:
https://review.openstack.org/#/c/104522/ https://review.openstack.org/#/c/100761/ -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to neutron in Ubuntu. https://bugs.launchpad.net/bugs/1314189 Title: instance creation fails on compute nodes with > 175 instances with neutron security groups enabled To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1314189/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
