[Openstack] question about multi-host network configuration
Hello, Our openstack cluster has 2 racks of physical nodes, I want to set up two openstack network service hosts, each serving one rack. Can I do that? Thanks, Xin smime.p7s Description: S/MIME Cryptographic Signature ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] question about multi-host network configuration
Sure, just install nova-network on every node and enable themulti_host=true flag on every nova.conf file :) Nuage Co - Razique Mahrouarazique.mahr...@gmail.com Le 17 sept. 2012 à 16:38, Xin Zhao xz...@bnl.gov a écrit :Hello,Our openstack cluster has 2 racks of physical nodes, I want to set up two openstack network service hosts, each serving one rack.Can I do that?Thanks,Xin___Mailing list: https://launchpad.net/~openstackPost to : openstack@lists.launchpad.netUnsubscribe : https://launchpad.net/~openstackMore help : https://help.launchpad.net/ListHelp___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] question about multi-host network configuration
Sorry I should have made it more clear: among the hosts in one rack, only one of them have 2 nics, one being internet facing, all other nodes have only one internal nic. So I can't run nova-network on *every* compute node. Xin On 9/17/2012 10:55 AM, Razique Mahroua wrote: Sure, just install nova-network on every node and enable the multi_host=true flag on every nova.conf file :) Nuage Co - Razique Mahroua razique.mahr...@gmail.com Le 17 sept. 2012 16:38, Xin Zhao xz...@bnl.gov a crit : Hello, Our openstack cluster has 2 racks of physical nodes, I want to set up two openstack network service hosts, each serving one rack. Can I do that? Thanks, Xin ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp smime.p7s Description: S/MIME Cryptographic Signature ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] question about multi-host network configuration
ok in such case, install nova-network on both servers having the two nics, which network mode do you intend to use ? Nuage Co - Razique Mahrouarazique.mahr...@gmail.com Le 17 sept. 2012 à 16:59, Xin Zhao xz...@bnl.gov a écrit : Sorry I should have made it more clear: among the hosts in one rack, only one of them have 2 nics, one being internet facing, all other nodes have only one internal nic. So I can't run nova-network on *every* compute node. Xin On 9/17/2012 10:55 AM, Razique Mahroua wrote: Sure, just install nova-network on every node and enable the multi_host=true flag on every nova.conf file :) Nuage Co - Razique Mahroua razique.mahr...@gmail.com Pièce jointe.jpeg Le 17 sept. 2012 à 16:38, Xin Zhao xz...@bnl.gov a écrit : Hello, Our openstack cluster has 2 racks of physical nodes, I want to set up two openstack network service hosts, each serving one rack. Can I do that? Thanks, Xin ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] question about multi-host network configuration
I have been using flatdhcp mode in a single-host network configuration. Will flatdhcp also work in this 2 nova-network setting, or a vlan mode is preferred here? Thanks, Xin On 9/17/2012 11:05 AM, Razique Mahroua wrote: ok in such case, install nova-network on both servers having the two nics, which network mode do you intend to use ? Nuage Co - Razique Mahroua razique.mahr...@gmail.com Le 17 sept. 2012 16:59, Xin Zhao xz...@bnl.gov a crit : Sorry I should have made it more clear: among the hosts in one rack, only one of them have 2 nics, one being internet facing, all other nodes have only one internal nic. So I can't run nova-network on *every* compute node. Xin On 9/17/2012 10:55 AM, Razique Mahroua wrote: Sure, just install nova-network on every node and enable the multi_host=true flag on every nova.conf file :) Nuage Co - Razique Mahroua razique.mahr...@gmail.com Pice jointe.jpeg Le 17 sept. 2012 16:38, Xin Zhao xz...@bnl.gov a crit : Hello, Our openstack cluster has 2 racks of physical nodes, I want to set up two openstack network service hosts, each serving one rack. Can I do that? Thanks, Xin ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp smime.p7s Description: S/MIME Cryptographic Signature ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] question about multi-host network configuration
Sure, we've been running in that sort of configuration since bexar. The only tricky part is that you need to make sure that you run nova-api-metadata on each nova-network server, and you need to make sure that floating IPs can get to the appropriate fixed addresses (ie if a fixed address is not routed from the nova-network instance where the floating address is served from). That last bit pretty much requires setting up something like ospf for route exchange between your nova-network servers. (fixed networks aren't pegged to one n-net instance or the other, so they can move over time) -nld On Mon, Sep 17, 2012 at 9:38 AM, Xin Zhao xz...@bnl.gov wrote: Hello, Our openstack cluster has 2 racks of physical nodes, I want to set up two openstack network service hosts, each serving one rack. Can I do that? Thanks, Xin ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
