Open Stack

Thu May 24 09:53:12 UTC 2012

This is the Link:

http://devstack.org/guides/multinode-lab.html

The corrections  would be:

it is at the  moment necessary to install the "rabbit" service also on the
compute nodes (of course with the IP from the head node)

MYSQL_PASS -> MYSQL_PASSWORD

RABBIT_PASS -> RABBIT_PASSWORD

MULTI_HOST=1 -> MULTI_HOST=True (one I think only in the localrc config file
of the head node)

Some more comments concerning the ssh access (because of live migration)

Cheers vic

From: Razique Mahroua [mailto:razique.mahroua at gmail.com] 
Sent: Thursday, May 24, 2012 11:49 AM
To: Mauch, Viktor (SCC)
Cc: openstack at lists.launchpad.net
Subject: Re: [Openstack] devstack multi-node tutorial fails

Hey Viktor, coud you send me the link ? 
If it's within the official doc, we'll have a look, otherwise,  I guess you
could contact the team directly :-)

 <mailto:mauch at kit.edu> Mauch, Viktor (SCC)

24 mai 2012 11:46

Hmmmm, who would be the responsible person to make corrections and insert
some more comments to the current multi node tutorial of devstack??

Cheers Viktor

From: Razique Mahroua [mailto:razique.mahroua at gmail.com] 
Sent: Thursday, May 24, 2012 10:18 AM
To: Mauch, Viktor (SCC)
Cc: openstack at lists.launchpad.net
Subject: Re: [Openstack] devstack multi-node tutorial fails

Hey,
no you don't need to, the only case where the SSH exchange is mandatory is
for the [live|classi] migration

Raz

 <mailto:mauch at kit.edu> Mauch, Viktor (SCC)

23 mai 2012 16:31

Another thing:

Is it really necessary to implement password-less ssh login via
.ssh/authorized_keys?

For me it works without it.

Viktor

From: Razique Mahroua [mailto:razique.mahroua at gmail.com] 
Sent: Wednesday, May 23, 2012 4:28 PM
To: Mauch, Viktor (SCC)
Cc: openstack at lists.launchpad.net
Subject: Re: [Openstack] devstack multi-node tutorial fails

Thanks for the feedback
as for the multi_node mode, no it supposes you spawn a nova-network
component on every compute node
Razique

 <mailto:mauch at kit.edu> Mauch, Viktor (SCC)

23 mai 2012 16:00

Hi,

I just want so say, that some days ago the stack.sh script hast been changed
concerning the rabbit server installation.

The current description for multi node tutorial
(http://devstack.org/guides/multinode-lab.html) will fail.

At the moment it is necessary to install the rabbit service on the compute
hosts TOO (but of course with the IP from the master node)!!

e.g.:

ENABLED_SERVICES=n-cpu,n-net,g-api,rabbit

RABBIT_HOST=$MASTERNODE

RABBIT_PASSWORD=pass

Otherwise the compute node tries to find a rabbit-mq server on localhost!

There are also some other wrong details in the multi-node toturial.

It must be:

RABBIT_PASSWORD and MYSQL_PASSWORD instead of MYSQL_PASS und RABBIT_PASS

Und the parameter MULTI_HOST=1 has to be change to MULTI_HOST=True (and
should only be available on the master node, as I understand it right).

Cheers Viktor

--

Dipl.-Phys. Viktor Mauch

Steinbuch Centre for Computing (SCC)

http://www.scc.kit.edu/

Karlsruhe Institute of Technology (KIT)

Hermann-von-Helmholtz-Platz 1

D-76344 Eggenstein-Leopoldshafen

Phone: +49(0)721 608-28721

eMail: mauch at kit.edu

KIT - University of the State of Baden-Wuerttemberg and National Research
Center of the Helmholtz Association

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-- 
Nuage & Co - Razique Mahroua 
razique.mahroua at gmail.com

 <mailto:razique.mahroua at gmail.com> Razique Mahroua

23 mai 2012 16:27

Thanks for the feedback
as for the multi_node mode, no it supposes you spawn a nova-network
component on every compute node
Razique

-- 
Nuage & Co - Razique Mahroua 
razique.mahroua at gmail.com

 <mailto:razique.mahroua at gmail.com> Razique Mahroua

24 mai 2012 10:18

Hey,
no you don't need to, the only case where the SSH exchange is mandatory is
for the [live|classi] migration

Raz

 <mailto:mauch at kit.edu> Mauch, Viktor (SCC)

23 mai 2012 16:31