Can u open a bug with cloud-init with logs of what happened (/var/log/cloud-init.log) I don't believe this should happen (unless the instance id changed), There was a bug in an older version of cloud-init that may have caused this so knowing the cloud-init version would be good to. Thanks, Josh On Nov 13, 2014, at 6:06 PM, George Shuklin <george.shuklin at gmail.com> wrote: > Hello. > > We had planned power outage for one of our OS installation (havana). After everything booted back, we found every instance has change it's own ssh key (server key ssh-server presents upon connection). > > Is this bug or feature? Someone saw that? Is any way to prevent this? > > Thanks! > > _______________________________________________ > OpenStack-operators mailing list > OpenStack-operators at lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators