[Openstack-operators] Best kernel options for openvswitch on network nodes on a large setup
jp.methot at planethoster.info
Tue Sep 25 23:49:18 UTC 2018
This particular message makes it sound as if openvswitch is getting overloaded.
Sep 23 03:54:08 network1 ovsdb-server: ovs|01253|reconnect|ERR|tcp:127.0.0.1:50814: no response to inactivity probe after 5.01 seconds, disconnecting
A lot of those keep appear, and openvswitch always reconnects almost instantly though. I’ve done some research about that particular message, but it didn’t give me anything I can use to fix it.
Openstack system administrator
Administrateur système Openstack
> Le 25 sept. 2018 à 19:37, Erik McCormick <emccormick at cirrusseven.com> a écrit :
> Ate you getting any particular log messages that lead you to conclude your issue lies with OVS? I've hit lots of kernel limits under those conditions before OVS itself ever noticed. Anything in dmesg, journal or neutron logs of interest?
> On Tue, Sep 25, 2018, 7:27 PM Jean-Philippe Méthot <jp.methot at planethoster.info <mailto:jp.methot at planethoster.info>> wrote:
> Are there some recommendations regarding kernel settings configuration for openvswitch? We’ve just been hit by what we believe may be an attack of some kind we have never seen before and we’re wondering if there’s a way to optimize our network nodes kernel for openvswitch operation and thus minimize the impact of such an attack, or whatever it was.
> Best regards,
> Jean-Philippe Méthot
> Openstack system administrator
> Administrateur système Openstack
> PlanetHoster inc.
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