Hi Mandar, Thanks for bringing this up. For Essex, nova-manage commands to create/delete Quantum networks must be run on the nova-network node. For Folsom this will all change, as all networks will be created directly against the Quantum API, rather than using nova-manage. I'll add a note to the administrator guide, as this is not called there. Thanks!
Dan On Thu, Apr 12, 2012 at 1:38 AM, Vaze, Mandar <mandar.v...@nttdata.com>wrote: > It is my understanding that in multi-node setup :**** > > **· **nova-manage can be executed from any machine which may not > be running nova-network process. (Or should nova-manage always be run on > nova-network node ?)**** > > **· **nova-manage does DB operations and delegates the actual > networking calls to nova-network process ?**** > > ** ** > > Is this understanding correct ?**** > > ** ** > > I traced “nova-manage network create” and nova-manage network delete” > using FlatDHCPManager (default for devstack/stack.sh)**** > > Both these calls seem to be doing only DB operations.**** > > BTW, nova-network process was shutdown during both “network create” and > “network delete” – Still both operations were successful.**** > > ** ** > > But when using QuantumManager as network manager – nova-manage seems to be > doing networking operations like “iptables-save” (during network create) > and “kill_dhcp” (during network delete)**** > > (via linux-net L3 driver)**** > > ** ** > > Since nova-manage command may be executed on a host which isn’t running > nova-network – network commands like “iptables” and “kill -9 <pid of > dnsmasq>” on host running nova-manage seems incorrect.**** > > ** ** > > For the first scenario (iptables-save during “network create” – there is > already a defect in LP : https://bugs.launchpad.net/nova/+bug/977738**** > > and review : https://review.openstack.org/6451**** > > ** ** > > I would like your comments and opinions which would help me understand > “What nova-manage should and should NOT do”**** > > ** ** > > Thanks,**** > > -Mandar**** > > ** ** > > ** ** > > ** ** > > ** ** > > ______________________________________________________________________ > Disclaimer:This email and any attachments are sent in strictest confidence > for the sole use of the addressee and may contain legally privileged, > confidential, and proprietary data. If you are not the intended recipient, > please advise the sender by replying promptly to this email and then delete > and destroy this email and any attachments without any further use, copying > or forwarding > > -- > Mailing list: https://launchpad.net/~netstack > Post to : netstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~netstack > More help : https://help.launchpad.net/ListHelp > > -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dan Wendlandt Nicira, Inc: www.nicira.com twitter: danwendlandt ~~~~~~~~~~~~~~~~~~~~~~~~~~~
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