Comment 0 for bug 1737866

When there are a large number of routers and dhcp agents on a host, we see a syslog error repeated:

"hostname ovs-vswitchd: ovs|1762125|netlink_socket|ERR|fcntl: Too many open files"

If I check the number of filehandles owned by the pid for "ovs-vswitchd unix:/var/run/openvswitch/db.sock" I see close to/at 65535 files.

If I then run the following, we double the limit and (in our case) saw the count rise to >80000:

prlimit -p $pid --nofile=131070

We need to be able to:
- monitor via nrpe, if the process is running short on filehandles
- configure the limit so we have the option to not run out.

Currently, if I restart the process, we'll lose this setting.

Needless to say, openvswitch running out of filehandles causes all manner of problems for services which use it.