On 05/26/2015 02:52 AM, Cynthia Lopes wrote: > Hi, > > Just one thing that my be helpful... You don't have to add theses routes > manually in each VM, you can have neutron do that for you. > > It is possible to configure the subnet to inject static routes on the VMs... > > When you create the subnet, you can pass the addres of the subnet you want > to reach as "destination", and the IP of the router as "nexthop": > > # neutron subnet-create --host-route destination=CIDR,nexthop=IP_ADDR > > Additional route (This option can be repeated if you need multiple routes) > > Then, all the VMs created on the subnet will be injected with the route(s) > you specified. > > > > You might be able to update the subnet to add theses routes, but I never > tried it by updating...
Brilliant. I'll give it a go in a couple of days, when I return back to that project. This sounds like a great solution. Even if it means redefining networks - long term it's worth it IMO. Thank you very much. > > > Kind regards, > --------------------------------------------------------------- > Cynthia Lopes do Sacramento > Ingénieur DevOps Cloud SDN > Maya Technologies - Bull/Atos > > 2015-05-22 22:07 GMT+02:00 Richard Raseley <[email protected]>: > >> Dmitry Makovey wrote: >> >>> first of all - thank you very much for bearing with me on this one.;) >>> >> >> My pleasure, happy to help! >> >> So how shall I go about setting it up? do I need to spin up some >>> "dual-nic" VM that would act as a router or can I use some other >>> OpenStack facilities for that? >>> >> >> You won't need a dual NIC VM, but rather to just add a route on each VM >> that tells it that, for hosts which have addresses in the other network(s), >> to not use the default gateway (which is the ext_net attached router), but >> to send their traffic via the other ('private') router's interface. >> >> So, for example on the instance which you have attached to the >> 'private_gb_db_net' network you would have two routes: >> >> * ip route add -net 10.10.31.0 netmask 255.255.255.0 gw 10.10.10.4 >> >> * ip route add -net 10.10.25.0 netmask 255.255.255.0 gw 10.10.10.6 >> >> As of now, the default gateway is the only route they know of, so while it >> is true that the Neutron routers themselves have automatic knowledge of >> their attached networks, that is separate from the instance's knowledge of >> which routers are available. >> >> I hope that helps. >> >> >> Regards, >> >> Richard >> >> >> _______________________________________________ >> Mailing list: >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : [email protected] >> Unsubscribe : >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> > -- Dmitry Makovey Web Systems Administrator Athabasca University (780) 675-6245 --- Confidence is what you have before you understand the problem Woody Allen When in trouble when in doubt run in circles scream and shout http://www.wordwizard.com/phpbb3/viewtopic.php?f=16&t=19330
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : [email protected] Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
