On 28.05.15 18:56, George Shuklin wrote: > Today we've discover a very serious bug in juno: > https://bugs.launchpad.net/nova/+bug/1459726 > > In short: if you're using syslog, and restart rsyslog, all APIs > processes will eventually stuck with 100% CPU usage without doing > anything. > > Is anyone hits this bug before? It looks like very nasty. Yes, the Swift project hit this bug in the past too, though it was fixed awhile ago: https://bugs.launchpad.net/swift/+bug/780025 https://review.openstack.org/#/c/8841/ Summarized: using UDP instead of a unix socket fixes this. -- Christian