Issue #3773 has been updated by Matthias Saou.

I just ran into this exact same issue while trying to create a 
tinyproxy.conf.erb template with "Timeout <%= timeout %>". It got me wasting 
some time, so I would also see the benefit of a more useful error message.

Note that I got a similar problem when trying "LogLevel <%= loglevel %>", but 
since that's conflicting at some other level, the message at least hints at 
that variable :

<pre>
Puppet (err): Could not run Puppet configuration client: Parameter loglevel 
failed: Invalid value "Warning". Valid values are debug, info, notice, warning, 
err, alert, emerg, crit, verbose.  at 
/etc/puppet/modules/tinyproxy/manifests/init.pp:40
</pre>
----------------------------------------
Bug #3773: Can't use "timeout" as a variable name in an erb template
http://projects.puppetlabs.com/issues/3773

Author: Robin Bowes
Status: Needs more information
Priority: Normal
Assigned to: 
Category: 
Target version: 
Affected version: 0.25.4
Keywords: template erb
Branch: 


I got this error when puppet tried to parse a template:

err: Could not retrieve catalog from remote server: Error 400 on SERVER: Failed 
to parse template pulse/lvs.cf.virtual.erb: wrong number of arguments (0 for 1) 
at /etc/puppet/modules/pulse/manifests/config.pp:121 on node 
a003.private.a.statcounter.com

I debugged the content of the template until I found that a template containing 
this single line caused the same error:

timeout = <%= timeout %>

I worked around this by changing the variable name to timeout_value:

timeout = <%= timeout_value %>


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