Prashant, If this is for systemd, how about changing the nova-api unit file?
Something like —> [Service] ... LimitNOFILE=65536 <— should do it. Cheers, Arne On 19 Dec 2016, at 17:23, Prashant Shetty <prashantshetty1...@gmail.com<mailto:prashantshetty1...@gmail.com>> wrote: Team, I have scale setup and metadata requests are seems to fail from instance. Main reason for failure is "Max open files" limit(1024) set on nova-api service. Though on controller we have set max open file limit of 65k(limit.conf), nova-api always comes up with 1024 limit causing failure. Could someone let me know how can we change the max open files limit of nova-api service? Setup Details: · Single controller · 500 KVM computes · Devstack branch: stable/newton · We have native metadata and dhcp running on platform · 3750 instances stack@controller:/opt/stack/logs$ ps aux | grep nova-api stack 14998 2.2 0.3 272104 121648 pts/8 S+ 09:53 0:14 /usr/bin/python /usr/local/bin/nova-api stack@controller:/opt/stack/logs$ stack@controller:/opt/stack/logs$ stack@controller:/opt/stack/logs$ cat /proc/14998/limits Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size unlimited unlimited bytes Max stack size 8388608 unlimited bytes Max core file size unlimited unlimited bytes Max resident set unlimited unlimited bytes Max processes 128611 128611 processes Max open files 1024 4096 files Max locked memory 65536 65536 bytes Max address space unlimited unlimited bytes Max file locks unlimited unlimited locks Max pending signals 128611 128611 signals Max msgqueue size 819200 819200 bytes Max nice priority 0 0 Max realtime priority 0 0 Max realtime timeout unlimited unlimited us stack@controller:/opt/stack/logs$ n-api: 2016-11-08 18:44:26.168 30069 INFO nova.metadata.wsgi.server [req-fb4d729b-a1cd-4df1-aaf8-3f854a739cce - -] (30069) wsgi exited, is_accepting=True Traceback (most recent call last): File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 457, in fire_timers timer() File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line 58, in __call__ cb(*args, **kw) File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 168, in _do_send waiter.switch(result) File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in main result = function(*args, **kwargs) File "/opt/stack/nova/nova/utils.py", line 1066, in context_wrapper return func(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py", line 865, in server client_socket = sock.accept() File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 214, in accept res = socket_accept(fd) File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 56, in socket_accept return descriptor.accept() File "/usr/lib/python2.7/socket.py", line 206, in accept sock, addr = self._sock.accept() error: [Errno 24] Too many open files Thanks, Prashant _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org<mailto:openstack@lists.openstack.org> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack -- Arne Wiebalck CERN IT
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