Re: [libvirt-users] can't establish more than 1000 connections with virsh

On Thu, May 25, 2017 at 06:51:40PM +0800, dw wrote: > 在 2017年05月25日 18:37, Daniel P. Berrange 写道: >> On Thu, May 25, 2017 at 06:20:51PM +0800, dw wrote: >>> Hi: >>> >>> I'm trying to connect with libvirtd with virsh from a remote PC,but only >>> can establish 1000 connections. >>> >>> If try more connections,prompt: >>> >>> "error: failed to connect to the hypervisor >>> error: Failed to open file '/etc/libvirt/libvirt.conf': Too many open >>> files" >>> >>> I tried in another PC,also get the same prompt. >>> >>> Anybody know why? >> There's a limit of 1024 open file handles by default on Linux. You would >> have to raise that limit in /etc/security/limits.d/ for your user. >> > In /etc/security/limits.d/,there is only 20-nproc.conf. You can create any files you want in that sub-directory - they just use the same syntax as limits.conf. It means that if RPM upgrades limits.conf it doesn't interfere with your changes in limits.d/custom.conf > I modified /etc/security/limits.conf,what I added is: > > "* soft nofile 81920 > * hard nofile 81920" > > I also modified /etc/pam.d/login,that I added is: > > "session required pam_limits.so" I don't think that's needed - its already activated via pam.d/system-auth which is included from login. > The output of "ulimit -a" is: > > core file size (blocks, -c) 0 > data seg size (kbytes, -d) unlimited > scheduling priority (-e) 0 > file size (blocks, -f) unlimited > pending signals (-i) 385898 > max locked memory (kbytes, -l) 64 > max memory size (kbytes, -m) unlimited > open files (-n) 81920 > pipe size (512 bytes, -p) 8 > POSIX message queues (bytes, -q) 819200 > real-time priority (-r) 0 > stack size (kbytes, -s) 8192 > cpu time (seconds, -t) unlimited > max user processes (-u) 385898 > virtual memory (kbytes, -v) unlimited > file locks (-x) unlimited > > > What I did is right? That at least shows the new limit is active Regards, Daniel