[Crowbar] Adding support for SUSE

[Andi_Abes at Dell.com]

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-----Original Message-----
From: crowbar-bounces On Behalf Of Ralf Haferkamp
Sent: Wednesday, March 21, 2012 11:03 AM
To: crowbar
Cc: Lowther, Victor
Subject: Re: [Crowbar] Adding support for SUSE

Am Mittwoch 21 März 2012, 09:00:03 schrieb Victor_Lowther at Dell.com:
> Having an Ubuntu or CentOS admin node deploy OpenStack nodes does not 
> really make sense right now -- Crowbar does not support mixed-OS 
> clusters.
Hm, interesting. What problems do I have to expect? I am asking because the basics seem to work fine so far with just a few adjustments to the provisioner barclamp e.g. to have it generate the appropriate pxe config for SUSE and to provide a SUSE specific crowbar_join script.
There are of course still some manual steps involved to setup the admin node (like copying the install source to the appropriate directory). 
Also note, that this is just meant as a temporary workaround until we have the admin node stuff working on SUSE.

[aa]
This could be interesting - you could try to package the SUSE barclamp as an independent barclamp, and deploy it on an existing Admin.
The part about tweaking the provisioner would be a bit tricky to do in an automated fashion.... depends on the changes you had to make to the provisioner..
Is it more than adding the appropriate entries to the proposal to include the entry into the supported OS's list?

Another item we're not currently handling is allowing a choice between OS's at deployment time... we assume there's one, though we started (victor did that is) relaxing that assumption (so it's not os_install anymore, rather redhat_6.2_install)

> It has been on my to-to list for Crowbar for awhile now, but it's 
> priority is low enough that I have not been able to dedicate any time 
> to actually implementing it, so implementing mixed OS support would be 
> a prerequisite to deploying a SuSE from a CentOS or Ubuntu admin node.

> Also, what is the reasoning behind putting all the additional packages 
> in one other repo?  I ask because Crowbar used to do this, but it 
> would up making ongoing maintenance of the build caches trickier, and 
> made it impossible to be able to tar up barclamps + the packages they 
> depend on for distribution and hotfix updates.
The thing is that we already have quite some tools and products that handle exactly these kind of problems (building packages taking care of the dependencies and distributing updates). Ideally we would integrate with these tools to distribute updates to the Crowbar Cluster. But this is still to be discussed and nothing is set in stone yet. Currently I mainly did it this way because it got me much faster to a state where I could actually deploy something SLES based with Crowbar.

> These days the
> provisioner barclamp  knows how to serve all of the repositories that 
> the other barclamps provide, and the deployer barclamp knows how to 
> set up the repositories on all the nodes based on what the provisioner 
> can serve.
> 
> -----Original Message-----
> From: crowbar-bounces On Behalf Of Ralf Haferkamp
> Sent: Wednesday, March 21, 2012 5:47 AM
> To: crowbar
> Subject: [Crowbar] Adding support for SUSE
> 
> Hi,
> 
> we are currently looking into adding support for SLES into Crowbar. 
> Our first goal is get to a state where we can use an existing Admin 
> Node (Ubuntu or CentOS based) to deploy OpenStack on SLES11-SP2. 
> (Porting the build scripts might then happen at some later point). 
> Does that make sense?
> 
> Also we currently plan not include any additional RPMs or gems into 
> the barclamps when deploying on SUSE. All of the additional software 
> is supposed to come from a single separate repo, which will be added 
> to the nodes during install time (via the AutoYaST install profile).
> 
> regards,
> 	Ralf
> 
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