Puppet users - May 2009 - problem with conditionals

I''m new to puppet.  I''m trying to use some real case examples
to better
understand how Puppet works.

Here''s my case:

    exec { "usermod -d /home/hadoop -s /bin/bash hadoop":
        unless => "test `grep ^hadoop /etc/passwd | awk -F:
''{print
$6}''` == ''/home/hadoop''"
    }

The idea is the usermod would only get executed if the user''s home
directory was something other then /home/hadoop.  But I see in the
client logs that regardless of the condition, the usermod command gets
run each and every time.

Any tips on what I''m doing wrong?

Thanks!
-jeremy


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To post to this group, send email to puppet-users@googlegroups.com
To unsubscribe from this group, send email to
puppet-users+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/puppet-users?hl=en
-~----------~----~----~----~------~----~------~--~---

2009/5/7 Jeremy Hansen <jeremy@skidrow.la>:
>
>
> I''m new to puppet.  I''m trying to use some real case
examples to better
> understand how Puppet works.
>
> Here''s my case:
>
>    exec { "usermod -d /home/hadoop -s /bin/bash hadoop":
>        unless => "test `grep ^hadoop /etc/passwd | awk -F:
''{print
> $6}''` == ''/home/hadoop''"
>    }
>
> The idea is the usermod would only get executed if the user''s home
> directory was something other then /home/hadoop.  But I see in the
> client logs that regardless of the condition, the usermod command gets
> run each and every time.
>
> Any tips on what I''m doing wrong?
>
> Thanks!
> -jeremy
>

Well, you might want to use the user type:

user { "hadoop":
    home => "/home/hadoop",
}

Though more generally it would be interesting to know why that test is
failing even if the user''s homedir is set correctly.  Which version of
puppet are you using?  I assume you''ve run that command on the command
line and gotten the correct exit value?


.r''

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To post to this group, send email to puppet-users@googlegroups.com
To unsubscribe from this group, send email to
puppet-users+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/puppet-users?hl=en
-~----------~----~----~----~------~----~------~--~---

RijilV wrote:
> 2009/5/7 Jeremy Hansen <jeremy@skidrow.la>:
>   
>> I''m new to puppet.  I''m trying to use some real case
examples to better
>> understand how Puppet works.
>>
>> Here''s my case:
>>
>>    exec { "usermod -d /home/hadoop -s /bin/bash hadoop":
>>        unless => "test `grep ^hadoop /etc/passwd | awk -F:
''{print
>> $6}''` == ''/home/hadoop''"
>>    }
>>
>> The idea is the usermod would only get executed if the user''s
home
>> directory was something other then /home/hadoop.  But I see in the
>> client logs that regardless of the condition, the usermod command gets
>> run each and every time.
>>
>> Any tips on what I''m doing wrong?
>>
>> Thanks!
>> -jeremy
>>
>>     
>
>
> Well, you might want to use the user type:
>
> user { "hadoop":
>     home => "/home/hadoop",
> }
>
> Though more generally it would be interesting to know why that test is
> failing even if the user''s homedir is set correctly.  Which
version of
> puppet are you using?  I assume you''ve run that command on the
command
> line and gotten the correct exit value?
>   
Of course right after writing this mail, I found the user functions and
that works perfectly, but like you said, I would still like to
understand why this didn''t work.  I have other such tests I''d
like to run.

puppet-server-0.24.8-1.el5.1
puppet-0.24.8-1.el5.1

Thanks
-jeremy

> .r''
>
> >
>   



--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To post to this group, send email to puppet-users@googlegroups.com
To unsubscribe from this group, send email to
puppet-users+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/puppet-users?hl=en
-~----------~----~----~----~------~----~------~--~---

Jeremy Hansen wrote:
> I''m new to puppet.  I''m trying to use some real case
examples to better
> understand how Puppet works.
>
> Here''s my case:
>
>     exec { "usermod -d /home/hadoop -s /bin/bash hadoop":
>         unless => "test `grep ^hadoop /etc/passwd | awk -F:
''{print $6}''` == ''/home/hadoop''"
>     }
I''d check to be sure that puppet hasn''t expanded the $6 before
it ever
reaches the awk command.  You might need to escape it using \$6 or
re-work the ''unless'' to use single quotes.

-- 
Todd        OpenPGP -> KeyID: 0xBEAF0CE3 | URL: www.pobox.com/~tmz/pgp
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Despite the high cost of living, it remains a popular item.

Todd Zullinger wrote:
> Jeremy Hansen wrote:
>   
>> I''m new to puppet.  I''m trying to use some real case
examples to better
>> understand how Puppet works.
>>
>> Here''s my case:
>>
>>     exec { "usermod -d /home/hadoop -s /bin/bash hadoop":
>>         unless => "test `grep ^hadoop /etc/passwd | awk -F:
''{print $6}''` == ''/home/hadoop''"
>>     }
>>     
>
> I''d check to be sure that puppet hasn''t expanded the $6
before it ever
> reaches the awk command.  You might need to escape it using \$6 or
> re-work the ''unless'' to use single quotes.
>
>   
Not only that, but you need to fully qualify exec statements, or set 
path to like /bin:/usr/bin.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To post to this group, send email to puppet-users@googlegroups.com
To unsubscribe from this group, send email to
puppet-users+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/puppet-users?hl=en
-~----------~----~----~----~------~----~------~--~---