On Wed, Jan 6, 2010 at 9:55 AM, Ashley Penney <[email protected]> wrote:

> I'll give this a try, I've never used or written a function so it's a good
> learning exercise.
>

I am sure you have used at least 2 functions, template and include :)

>
> My alternative plan was to make an awful exec{} that ran after the network
> define did that would do a 'sed' on the /etc/hosts file to fix puppet's ip,
> which is terrible. :)
>
>
> On Wed, Jan 6, 2010 at 12:42 PM, Dan Bode <[email protected]> wrote:
>
>> Hi Ashley,
>>
>> since you are re-ip-ing machines to a different subnet, then I assume that
>> you are maintaining the IP address for every node on the puppet server?
>>
>> The problem with facts here is that you are determining the IPaddress of
>> the puppet master based on what the IP is as opposed to what it should be
>> (after the puppet run). I would recommend using a function instead.
>>
>>
>>     host { "puppet":
>>         ensure => "present",
>>         ip => get_puppet_master($ip),
>>     }
>>
>> and then move the fact logic to this function.
>>
>> hope this helps,
>>
>> Dan
>>
>> On Wed, Jan 6, 2010 at 8:04 AM, Ashley Penney <[email protected]> wrote:
>>
>>> Hi,
>>>
>>> I've a fairly odd network setup and I keep running into a minor but
>>> irritating issue.  We have various subnets and depending on which subnet you
>>> are on you have to contact puppet by different IPs.  I have various
>>> workarounds for this and I build a /etc/hosts on each box with an entry for
>>> 'puppet' with the correct IP.  This is currently done via a fact as follows:
>>>
>>> Facter.add("puppetip") do
>>>     setcode do
>>>
>>>         result = case Facter["ipaddress"].value
>>>             when /10.241.209/: "10.241.209.118"
>>>             else "140.247.200.118"
>>>         end
>>>
>>>         result
>>>     end
>>> end
>>>
>>> Then I have an entry in hosts.pp that reads:
>>>
>>>     host { "puppet":
>>>         ensure => "present",
>>>         ip => "$puppetip",
>>>     }
>>>
>>> This works great except in cases where I have to re-ip a machine to a
>>> different subnet (which happens constantly for reasons too depressing to
>>> describe).  In this case when my defines that update the network run they
>>> are unable to update the /etc/hosts entry because the facter stuff is
>>> evaluated at the start of the run.  My host then changes IP and cannot
>>> recontact puppet to continue.  I have to ssh in and manually change
>>> /etc/hosts and then run puppet again.
>>>
>>> This irritates the hell out of me, but I can't think of another puppet
>>> solution for this.  I can't rely on split dns (or any dns, it's broken and
>>> not ran by me) so that's not an option.  Anyone have any ideas how I could
>>> work around this?
>>>
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>>>
>>
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