On Tuesday, October 11, 2016 at 3:54:25 PM UTC-5, re-g...@wiu.edu wrote:
> On Monday, October 10, 2016 at 9:07:35 AM UTC-5, jcbollinger wrote:
>> On Friday, October 7, 2016 at 10:39:58 AM UTC-5, re-g...@wiu.edu wrote:
>>> Well... The node I have been testing the duplicate declaration on uses a
>>> puppet secondary-master server, as it is on a remote network segment. It
>>> does not connect directly to the puppet primary-master in which The Forman
>>> is running on.
>>> So I did some work to get this particular "server1" node to use the
>>> puppet primary-master that The Foreman is running on. When I run a puppet
>>> update, it completes without error. When I switch back to the puppet
>>> secondary-master, I get the duplicate class error.
>>> They are both running puppet 3.8.7-1 on CentOS 6.
>>> The YAML produced by both is exactly 100% the same. So I can assume the
>>> YAML structure is not the issue.
>>> Would this suggest that the puppet secondary-master server is the issue,
>>> or the client connecting to it is perhaps not always getting what it wants
>>> from the slave?
>>> Remember that the puppet updates will complete correctly for many hours,
>>> then magically change to this error. And vice-versa, be in error for many
>>> hours, and then magically change to completing correctly. Also that
>>> sometime changing configuration in The Forman can trigger the Error to
>>> occur AND other times trigger to Error to stop occurring.
>>> Also note, I only have this problem with the saz-rsyslog module - NEVER
>>> with any other puppet module.
>>> When I remove the saz-rsyslog module, all issues disappear.
>> I am not prepared to believe that identical implementations of Puppet's
>> catalog builder running on substantially identical platforms with identical
>> inputs behave differently. Since you do see variations in behavior,
>> therefore, I conclude that those differences can be attributed to
>> differences in implementation, platform, or (most likely) inputs.
>>> I have made sure the puppet modules are 100% in sync between primary and
>>> secondary master server.
>>> And I have restarted the puppet processes on the secondary-master
>>> server, but the error will continue on the nodes.
>> Those are good steps. To really troubleshoot this thoroughly, however, I
>> think you'll need to be systematic: capture the ENC output for each catalog
>> request for a given node (or for all nodes), with timestamps and associated
>> success / failure of catalog compilation. Compare the ENC output for
>> successful catalog builds with that for failed builds and look for
>> Either at the same time or separately, you should look into whether
>> Puppet's environment cache has an impact here. Some of the behaviors you
>> describe make me rather suspicious of this. Supposing that you are using
>> directory environments, you should experiment both with disabling caching
>> altogether (set the environment_timeout configuration option to 0 (its
>> default)) and with caching indefinitely (set environment_timeout to
>> "unlimited"). Note that Puppet recommends against using any other setting
>> for that option. You could also try turning on the ignorecache option at
>> the master.
> So I ran a `puppet agent -t` on one of the problem nodes against the
> primary master puppet server (which was successful), and then afterwards
> the secondary master puppet server (which produces the duplicate
> declaration error for Class[Rsyslog]).
> The size of both catalog files are exactly the same (I am referring to
> this file:
> /var/lib/puppet/client_data/catalog/server1.mydomain.example.com.json ).
> The only difference inside the file is the order of items in the json
A duplicate declaration error is a parse (i.e. catalog building) error. If
the master encounters one then it does not emit a catalog -- or if it did,
it could not be one based on the failed catalog-building attempt. I'm not
sure what you're looking at, but it does not have the significance you are
attributing to it.
> So the only difference I can see between the two puppet servers is the
> order of the overall elements in the catalogs' json hashes and arrays.
> Could this be a cause of the duplicate declaration error?
No. Any catalog you have is the result of a catalog-building run in which
no such error was produced.
The appearance of duplicate declaration errors can be sensitive to the
order of declarations in your manifests or ENC output, but a catalog does
not directly inform about that.
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