Puppet users - Apr 2011 - intermittent "Could not look up qualified variable" on puppet master server, client fails to retrieve catalog after 2.6.8 upgrade

After upgrading my puppet master to 2.6.8 from 2.6.2, I intermittently
get things like:

puppet-master[29789]: (Scope(Class[Auth::Kerberos_ldap])) Could not
look up qualified variable
''common::datacenter::ldap::ldapservers'';
class common::datacenter::ldap has not been evaluated

puppet-master[29789]: Failed to parse template auth/rhel5/
ldap.conf.erb: undefined method `each'' for :undef:Symbol at /var/lib/
puppet/modules/auth/manifests/init.pp:22 on node vm-
puppettest2.somedomain.com

(client returns the same second message from above and uses the cached
catalog)

If I restart the puppetmaster, this error goes away on the next re-run
of the client. No errors about parsing and everything comes down
cleanly. However on subsequent runs the errors above return and it
starts failing.

Is this a bug?

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I figured this out. I''ll summarize briefly in case it happens to
anyone else. The issue had to do with stages.

The class "Auth::Kerberos_ldap" was trying to source qualified
variables in "common::datacenter" as the message indicates. However
Auth::Kerberos_ldap was assigned to stage "first", while
"common::datacenter" was assigned to stage "main". This
seemed to be
the cause of the problem because when i changed it the issue stopped
happening. This worked on 2.6.2 so I can only assume something changed
in 2.6.8. Conceptually the new behavior makes sense I suppose.

On Apr 29, 9:31 am, George <ge.hepp...@gmail.com>
wrote:
> After upgrading my puppet master to 2.6.8 from 2.6.2, I intermittently
> get things like:
>
> puppet-master[29789]: (Scope(Class[Auth::Kerberos_ldap])) Could not
> look up qualified variable
''common::datacenter::ldap::ldapservers'';
> class common::datacenter::ldap has not been evaluated
>
> puppet-master[29789]: Failed to parse template auth/rhel5/
> ldap.conf.erb: undefined method `each'' for :undef:Symbol at
/var/lib/
> puppet/modules/auth/manifests/init.pp:22 on node vm-
> puppettest2.somedomain.com
>
> (client returns the same second message from above and uses the cached
> catalog)
>
> If I restart the puppetmaster, this error goes away on the next re-run
> of the client. No errors about parsing and everything comes down
> cleanly. However on subsequent runs the errors above return and it
> starts failing.
>
> Is this a bug?
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