Thank you. I am looking to read this state and compare it with neutron DB. If there are agents that do it already, I would like only to learn if I can change the polling period. Can you advise about the most efficient way to learn which agent does it and which doesn't?
Leonid On Sun, Mar 8, 2015 at 12:02 AM, Salvatore Orlando <[email protected]> wrote: > Hi Leo, > > Every agent keeps anyway an in-memory state throughout its execution. > The agents indeed have no persistent storage - at least not in the usual > form of a database. They however rely on data other than the neutron > database. > > For instance for the l2 agent, ovsdb itself is a source of information. > The agent periodically scans it to detect interfaces which are brought up > or down. > As another example the dhcp agent stores its current state a 'data' > directory (if you're using devstack it's usually > /opt/stack/data/neutron/dhcp) > > Hope this helps, > Salvatore > > > > > > On 7 March 2015 at 13:05, Leo Y <[email protected]> wrote: > >> Hello, >> >> Where within the code of neutron agents I can find structure(s) that >> store network information? The agent has to know all current networks and >> ports in use by all VMs that are running in its compute node. Does anyone >> know where this information is stored except for neutron DB? >> >> Thank you >> >> __________________________________________________________________________ >> OpenStack Development Mailing List (not for usage questions) >> Unsubscribe: >> [email protected]?subject:unsubscribe >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >> >> > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: [email protected]?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > -- Regards, Leo --------------------------------------------------------- I enjoy the massacre of ads. This sentence will slaughter ads without a messy bloodbath
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