Luckily you can easily compile your own: This post shows the source code and how to build a tool like prlimit: http://lzone.de/cheat-sheet/ulimit
IMHO it is quite ugly to change it this way though. I see this more as a tool for a process that cannot be restarted without causing issues. The proper way would be to use systemd unit files or whatever is relevant in your setup. Cheers, Robert From: Prashant Shetty <prashantshetty1...@gmail.com> Date: Monday, December 19, 2016 at 7:30 PM To: John Petrini <jpetr...@coredial.com> Cc: "openstack@lists.openstack.org" <openstack@lists.openstack.org> Subject: Re: [Openstack] Max open files limit for nova-api Thanks John. Seems like prlimit doesnt seems to be available for ubuntu 14.04 :-( On Mon, Dec 19, 2016 at 11:51 PM, John Petrini <jpetr...@coredial.com<mailto:jpetr...@coredial.com>> wrote: Hi Prashant, On second thought that trick might only work on CentOS. 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On Mon, Dec 19, 2016 at 1:13 PM, Prashant Shetty <prashantshetty1...@gmail.com<mailto:prashantshetty1...@gmail.com>> wrote: Hi John, Echo option doesnt seems to work on below controller. stack@devstackvm:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=14.04 DISTRIB_CODENAME=trusty DISTRIB_DESCRIPTION="Ubuntu 14.04.5 LTS" stack@devstackvm:~$ stack@devstackvm:~$ ps aux | grep nova-api stack 3070 1.1 0.1 271576 121092 pts/9 S+ Dec16 50:29 /usr/bin/python /usr/local/bin/nova-api stack 3079 0.3 0.8 1045308 881676 pts/9 S+ Dec16 14:32 /usr/bin/python /usr/local/bin/nova-api stack 3080 0.2 0.1 324808 161096 pts/9 S+ Dec16 9:25 /usr/bin/python /usr/local/bin/nova-api stack 3081 0.2 0.7 980172 816468 pts/9 S+ Dec16 10:37 /usr/bin/python /usr/local/bin/nova-api stack 3082 0.3 0.1 336824 173288 pts/9 S+ Dec16 16:11 /usr/bin/python /usr/local/bin/nova-api stack 3083 0.4 0.1 338788 175264 pts/9 S+ Dec16 19:05 /usr/bin/python /usr/local/bin/nova-api stack 3084 0.4 0.1 336616 172912 pts/9 S+ Dec16 17:41 /usr/bin/python /usr/local/bin/nova-api stack 3085 0.2 0.8 1054900 891272 pts/9 S+ Dec16 10:09 /usr/bin/python /usr/local/bin/nova-api stack 3086 0.2 0.1 325088 161228 pts/9 S+ Dec16 9:59 /usr/bin/python /usr/local/bin/nova-api stack 3097 0.2 0.1 308088 151828 pts/9 S+ Dec16 11:10 /usr/bin/python /usr/local/bin/nova-api stack 3098 0.2 0.1 308296 152360 pts/9 S+ Dec16 11:15 /usr/bin/python /usr/local/bin/nova-api stack 3099 0.2 0.1 308708 152544 pts/9 S+ Dec16 11:42 /usr/bin/python /usr/local/bin/nova-api stack 3100 0.2 0.1 309588 153624 pts/9 S+ Dec16 11:06 /usr/bin/python /usr/local/bin/nova-api stack 3101 0.2 0.1 308372 152396 pts/9 S+ Dec16 11:14 /usr/bin/python /usr/local/bin/nova-api stack 3102 0.2 0.1 308084 152052 pts/9 S+ Dec16 11:10 /usr/bin/python /usr/local/bin/nova-api stack 3103 0.2 0.1 308380 152416 pts/9 S+ Dec16 11:09 /usr/bin/python /usr/local/bin/nova-api stack 3104 0.2 0.1 307652 151560 pts/9 S+ Dec16 10:29 /usr/bin/python /usr/local/bin/nova-api stack 8087 0.0 0.0 11752 2044 pts/21 S+ 10:07 0:00 grep --color=auto nova-api stack@devstackvm:~$ stack@devstackvm:~$ cat /proc/3070/limits | grep "Max open files" Max open files 1024 4096 files stack@devstackvm:~$ stack@devstackvm:~$ echo -n "Max open files=8192:unlimited" > /proc/3070/limits -bash: /proc/3070/limits: Permission denied stack@devstackvm:~$ sudo echo -n "Max open files=8192:unlimited" > /proc/3070/limits -bash: /proc/3070/limits: Permission denied stack@devstackvm:~$ root@devstackvm:/home/stack# echo -n "Max open files=8192:unlimited" > /proc/3070/limits bash: echo: write error: Invalid argument root@devstackvm:/home/stack# On Mon, Dec 19, 2016 at 11:27 PM, John Petrini <jpetr...@coredial.com<mailto:jpetr...@coredial.com>> wrote: Hi Preshant, You can change the open file limit of the running process by echoing the value to it. For example... echo -n "Max open files=8192:unlimited" > /proc/<PID>/limits ___ John Petrini On Mon, Dec 19, 2016 at 12:21 PM, Prashant Shetty <prashantshetty1...@gmail.com<mailto:prashantshetty1...@gmail.com>> wrote: Hi Arne, Thanks for your reply. Currently all these services are running on ubuntu controller under screen. Do we have any option to set the file limit option for n-api service in this case?. I am not using systemd in my setup to run these services. Thanks, Prashant On Mon, Dec 19, 2016 at 10:19 PM, Arne Wiebalck <arne.wieba...@cern.ch<mailto:arne.wieba...@cern.ch>> wrote: 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 _______________________________________________ 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
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