I've moved mitaka back to Triaged since this is only fixed so far in the
systemd init file.
** Changed in: cloud-archive/mitaka
Status: Fix Released => Triaged
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https://bugs.launchpad.net/bugs/1737866
Title:
Too many open files when large number of routers on a host
Status in OpenStack neutron-openvswitch charm:
Invalid
Status in Ubuntu Cloud Archive:
Fix Released
Status in Ubuntu Cloud Archive mitaka series:
Triaged
Status in Ubuntu Cloud Archive ocata series:
Fix Released
Status in Ubuntu Cloud Archive pike series:
Fix Released
Status in openvswitch package in Ubuntu:
Fix Released
Status in openvswitch source package in Xenial:
Fix Released
Status in openvswitch source package in Artful:
Won't Fix
Status in openvswitch source package in Bionic:
Fix Released
Bug description:
[Impact]
OpenStack environments running large numbers of routers and dhcp agents on a
single host can hit the NOFILES limit in OVS, resulting in broken operation of
virtual networking.
[Test Case]
Deploy openstack environment; create large number of virtual networks and
routers.
OVS will start to error with 'Too many open files'
[Regression Potential]
Minimal - we're just increasing the NOFILE limit via the systemd service
definition.
[Original Bug Report]
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.
To manage notifications about this bug go to:
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