[neutron] neutron l3 agents number
skaplons at redhat.com
Thu Oct 21 06:49:50 UTC 2021
On Thu, Oct 21, 2021 at 07:34:43AM +0200, Arnaud wrote:
> Sorry, forgot to add neutron header
> Kind regards,
> Le 20 octobre 2021 17:28:39 GMT+02:00, Arnaud Morin <arnaud.morin at gmail.com> a écrit :
> >Hey team,
> >When using DVR + HA, we endup with all routers beeing deployed on the
> >computes (the DVR part) and 3 routers on dvr_snat nodes (for HA).
> >The question is why 3 for snats?
> >I know that this is the max_l3_agents_per_router config parameter, but
> >2 seems enough?
> >On the other side, DHCP agent default (dhcp_agents_per_network) is 1,
> >while this is also a precious service provided in the tenant network.
> >So, is there any downside on having only 2 agents for routers?
TBH I don't think there is any downside to have only 2 agents hosting each
router (SNAT in case of DVR). Actually this is what we are e.g. testing in the
neutron-ovs-tempest-dvr-ha-multinode-full job as we have only 2 nodes there.
> >Thanks in advance,
Principal Software Engineer
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