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From Steve Loughran <ste...@apache.org>
Subject Re: Ant 1.7 alpha available for testing...
Date Mon, 31 Jul 2006 14:08:27 GMT
Kev Jackson wrote:
>>
>> yes, cfengine and lcfg can keep your stuff in control. There's also 
>> games you can play with vmware/xen hosted images, where the real CPUs 
>> just host the virtual machines, and those you replicate off managed 
>> "gold" images.
> 
> It's funny that you mention this, as my current project is working on 
> bash + perl + python scripts to automate updates to some software hosted 
> in xen - we have two xen images for each component, when we get an 
> update, the host shuts down one of the images (let's say guest 'b'), 
> while the other continues and takes over as the master ('a'), the host 
> (via the scripts) updates the shutdown image, reboots it, then switches 
> control over to it.  So far it's been fairly simple (although there's a 
> lot of gpg signatures etc flying about to validate where the updates 
> come from), the hard bit (swapping images in/out) is on this weeks task 
> list.
> 
> The spec is ok, but some kind of controller + dsl would be nice, these 
> scripts do feel a little 'hacky' for my liking, although I've discovered 
> bashunit in the process (yes unit testing bash - I never thought I'd see 
> that).  The worst part is getting the environment setup - writing the 
> scripts is fairly simple, but having every little detail in place before 
> you can test anything is a real pain.
> 

You have something that works but will not scale. You know that, don't you?

Like I said, puppet and smartfrog. I know, I work on the smartfrog team 
and am biased, but puppet is nice too.

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