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<div><a></a><a></a>Hi Christian:</div>
<div> </div>
<div><a></a><a></a>Thanks a lot<a></a><a></a>!!! </div>
<div><a></a><a></a>Finally I´m<a></a><a></a> gonna<a></a><a></a> use multi<a></a><a></a> nova-network<a></a><a></a> since<a></a><a></a> it<a></a><a></a> is<a></a><a></a> the<a></a><a></a> one<a></a><a></a> that<a></a><a></a> fits<a></a><a></a> better<a></a><a></a> to<a></a><a></a>
my configuration<a></a><a></a>. But<a></a><a></a> I have<a></a><a></a> a dout<a></a><a></a> that<a></a><a></a> hit me after<a></a><a></a> I read<a></a><a></a> your<a></a><a></a> mail... network-nodes<a></a><a></a> always<a></a><a></a> do NAT<a></a><a></a>, or<a></a><a></a> by<a></a><a></a>
default they<a></a><a></a> only<a></a><a></a> route<a></a><a></a> packets<a></a><a></a> (no NAT<a></a><a></a>) between<a></a><a></a> private<a></a><a></a> and public<a></a><a></a> networks<a></a><a></a>???</div>
<div> </div>
<div>Once again<a></a><a></a>... thanks<a></a><a></a>.</div>
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<font color="#000000" size="2" face="Tahoma"><b>De:</b> openstack-operators-bounces@lists.openstack.org [openstack-operators-bounces@lists.openstack.org] En nombre de Christian Parpart [trapni@gmail.com]<br>
<b>Enviado el:</b> miércoles, 23 de mayo de 2012 14:00<br>
<b>Para:</b> Sergio Ariel de la Campa Saiz<br>
<b>CC:</b> openstack-operators@lists.openstack.org<br>
<b>Asunto:</b> Re: [Openstack-operators] nova-network in all compute nodes?????<br>
</font><br>
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<br>
<div class="gmail_quote">On Wed, May 23, 2012 at 10:12 AM, Sergio Ariel de la Campa Saiz
<span dir="ltr"><<a href="mailto:sacampa@gmv.com">sacampa@gmv.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
Hi:<br>
<br>
I have been reading the conversation between Lorin and Christian about nova-network HA, and I have a question that maybe one of them can answer me... or maybe any member of this group :-) :-)<br>
<br>
This is my environment:<br>
<br>
2 ubuntu servers, essex and VLAN networking:<br>
- 1 controller with nova-network, glance, keystone, nova-api, nova-scheduler but NOT nova-compute<br>
- 1 node: nova-compute only<br>
<br>
In this configuration all my VM are going to be launched in the node since there is no nova-compute running in my controller. When I try to launch a VM appears a problem whith my network. I think that is because there is no nova-network installed in the node.
Bridge and VLAN interfaces are created in the controller but they are not created in the node.<br>
<br>
My question is: it is necessary to install nova-network in all compute nodes??<br>
<br>
Thanks a lot.<br>
</blockquote>
<div><br>
</div>
<div>Hey Sergio,</div>
<div><br>
</div>
<div>it is possible to either have a dedicated nova-network node (multi_host=False) or the other mode,</div>
<div>have nova-network running on every compute node (nova-compute).</div>
<div><br>
</div>
<div>While the latter is more HA-friendly, it chose the first, since the latter will also require </div>
<div>to have your public IP network available on every compute node and I (in my setup) just don't.</div>
<div><br>
</div>
<div>Whatever you chose, you'll need to take care of some decisions when writing nova.conf and when actually populating networks via nova-manage:</div>
<div><br>
</div>
<div><b>single nova-network node</b> (may still have more, and HA'd via keepalived in active/passive mode, ye know):</div>
<div><br>
</div>
<div> # /etc/nova/nova.conf</div>
<div> # line below is only needed when you want to HA your single nova-network node (default: False)!:</div>
<div> send_arp_for_ha=True</div>
<div> # this one defaults to False anyways, but I added and documented it for clarity:</div>
<div> multi_node=False</div>
<div> # the following is need to SNAT your outgoing compute traffic to the nova-network node's public IP</div>
<div> routing_source_ip=$your_nova_networks_public_ip</div>
<div><br>
</div>
<div> nova-manage network create <b>--multi_host=F</b> --vlan=$VID --label=your-net --fixed_cidr=<a href="http://10.10.49.0/24" target="_blank">10.10.49.0/24</a> --project_id=$TENANT_ID</div>
<div><br>
</div>
<div><b>multi nova-network</b> mode (meaning: one nova-network on same host as nova-compute):</div>
<div> # /etc/nova/nova.conf</div>
<div> multi_node=True</div>
<div> enabled_apis=ec2,osapi_compute,osapi_volume,metadata</div>
<div><br>
</div>
<div> nova-manage network create --multi_host=T --vlan=$VID --label=your-net --fixed_cidr=<a href="http://10.10.49.0/24" target="_blank">10.10.49.0/24</a> --project_id=$TENANT_ID</div>
<div><br>
</div>
<div>I hope this helps.</div>
<div><br>
</div>
<div>Also check /var/log/nova/nova-*.log</div>
<div><br>
</div>
<div>So long,</div>
<div>Christian Parpart.</div>
</div>
</div>
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