Puppet users - Sep 2012 - sharing a storeconfigs db between masters (across versions)

Hey there,

I''m currently in the process of migrating a 0.25.4 puppet master to
2.6.

Since we''re really not sure about how things will work out if I just
upgrade the puppetmaster and pray, I chose to create a new master and to
integrate one node at a time with 2.6 to make sure that everything goes
well on every node.

Now I''m wondering if anyone has tried the following or has any
interesting info about whether or not it would be a good idea:

From what I understand of storeconfigs, it is possible to plug both
puppetmasters on the same MySQL db. Are there any possibilities of
issues with having two puppetmasters with *different versions* hit on
the same db ?

The goal of the above scenario with the storeconfigs db would be to keep
the nagios configuration functional across puppet master versions while
migrating nodes to the 2.6 master.

-- 
Gabriel Filion

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On 2012-09-29 16:42, Gabriel Filion wrote:
> From what I understand of storeconfigs, it is possible to plug both
> puppetmasters on the same MySQL db. Are there any possibilities of
> issues with having two puppetmasters with *different versions* hit on
> the same db ?
FYI I ran a test run and got my answer. It is *not* a good idea :P

the 2.6 client run on the 2.6 master got the following error:

err: Could not run Puppet configuration client: Parameter require
failed: No title provided and "#<YAML::Object:0x7f8e7719a520>"
is not a
valid resource reference

and after that, the storeconfigs DB was screwed up on the 0.25.4 master.
clients kept getting the following error:

err: Could not retrieve catalog from remote server: Error 400 on SERVER:
Could not render to pson: undefined method `title'' for nil:NilClass

dropped the db and restored the dump I had made before the test and
client runs started working again against the 0.25.4 master.

-- 
Gabriel Filion

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On 01.10.2012 23:11, Gabriel Filion wrote:
> On 2012-09-29 16:42, Gabriel Filion wrote:
>>  From what I understand of storeconfigs, it is possible to plug both
>> puppetmasters on the same MySQL db. Are there any possibilities of
>> issues with having two puppetmasters with *different versions* hit on
>> the same db ?
>
> FYI I ran a test run and got my answer. It is *not* a good idea :P
>
> the 2.6 client run on the 2.6 master got the following error:
>
> err: Could not run Puppet configuration client: Parameter require
> failed: No title provided and
"#<YAML::Object:0x7f8e7719a520>" is not a
> valid resource reference
>
> and after that, the storeconfigs DB was screwed up on the 0.25.4 master.
> clients kept getting the following error:
>
> err: Could not retrieve catalog from remote server: Error 400 on SERVER:
> Could not render to pson: undefined method `title'' for
nil:NilClass
>
> dropped the db and restored the dump I had made before the test and
> client runs started working again against the 0.25.4 master.
>
You should be able to run 0.25 clients against a 2.6 master.

D.

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On 2012-10-02 02:46, David Schmitt wrote:
> On 01.10.2012 23:11, Gabriel Filion wrote:
>> On 2012-09-29 16:42, Gabriel Filion wrote:
>>>  From what I understand of storeconfigs, it is possible to plug
both
>>> puppetmasters on the same MySQL db. Are there any possibilities of
>>> issues with having two puppetmasters with *different versions* hit
on
>>> the same db ?
>>
>> FYI I ran a test run and got my answer. It is *not* a good idea :P
>>
>> the 2.6 client run on the 2.6 master got the following error:
>>
>> err: Could not run Puppet configuration client: Parameter require
>> failed: No title provided and
"#<YAML::Object:0x7f8e7719a520>" is not a
>> valid resource reference
>>
>> and after that, the storeconfigs DB was screwed up on the 0.25.4
master.
>> clients kept getting the following error:
>>
>> err: Could not retrieve catalog from remote server: Error 400 on
SERVER:
>> Could not render to pson: undefined method `title'' for
nil:NilClass
>>
>> dropped the db and restored the dump I had made before the test and
>> client runs started working again against the 0.25.4 master.
>>
> 
> You should be able to run 0.25 clients against a 2.6 master.
I tried the other way around :)

actually the case was a bit more perverted. it was a 2.6 client against
a 2.6 master, but I had configured the 2.6 master to poke around the
same MySQL database than the 0.25 master uses for the storeconfigs.

It proved out to mess up the database and prevent client runs :\

-- 
Gabriel Filion

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