[et-mgmt-tools] cobbler_sync_master

[Michael DeHaan]

Scott Henson wrote:
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> I've attached a small script that we use to sync multiple subcobbler 
> instances to a single master.  We currently use an out of band copy 
> mechanism to get /var/www/cobbler/ks_mirror onto all our cobbler 
> server, but we had no way of getting cobbler to know about the distro 
> and the attached profiles.  This script will add both, without syncing 
> any data and create the necessary symlinks in /var/www/cobbler/links.
>
> Why should you use it?
> We currently use it for network segmentation purposes.  We have 
> several subcobblers that serve a single part of our network and we 
> don't want to have to import distros in each place.  Instead we use 
> snap mirroring to get /var/www/cobbler/ks_mirror out and then run 
> cobbler_sync_master to get cobbler to create the distros and profiles 
> in its configuration files.  This can also be used to distribute the 
> load of a single network across multiple cobblers mounting ks_mirror 
> off the same nfs share.
>
> How do you use it?
> Easy!  You use cobbler import to get the distro into the master 
> server.  Then when the ks_mirror files arrive on the subcobblers, you 
> run 'cobbler_sync_master --server master.example.com'.  The script 
> will add any distros that it sees on the master that are not on the 
> subcobbler and that the kernel has arrived for.
>
> If someone else finds this script useful I'll probably clean it up a 
> bit and we can throw it in scripts/.  If more than a few people find 
> this useful I'd be willing to port it into cobbler core.
>
> - --
> Scott Henson
> Red Hat Production Operations Release Engineer
> WVU Alum BSAE/BSME
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Very nice.

Scott, if you want, send in a patch to add it cobbler's core.

I'd recommend adding a "cobbler/action_syncmaster.py" and also a 
"cobbler/modules/cli_syncmaster.py".   If you poke around the modules 
directory you should see how that works in terms of adding new commands 
to the CLI.

Might we want to call it something without "sync" in it as we already 
have "sync" and "reposync"? 

loadmaster?  clonemaster?

--Michael