[Puppet Users] Literal @ character in erb template

On Friday, 31 August 2012 15:09:17 UTC+1, banjer wrote:

Hi,
I have a template named rsyslog.conf.erb, and the puppet agents seem to be
choking on this:

**.notice;news.none;cron.none @loghost:514*


The agents report an error of ": bad URI(is not URI?): " followed by a
bunch of jargon. I'm pretty sure its the literal '@' symbol that its
trying to evaluate as erb code. How can I escape this @ symbol so its a
literal? Thanks.

On Friday, August 31, 2012 11:21:08 AM UTC-4, Krzysztof Wilczynski wrote:

Hi,

I am not sure how your template looks like, or how do you render it, but
try to avoid putting anything with @ into a <%= %> block. It should just
work:

matti@acrux ~ $ irb
=> true
=> "localhost"
%>:514').result(binding)
"*.notice;news.none;cron.none @localhost:514"
=> nil
=> "localhost"
%>:514').result(binding)
"*.notice;news.none;cron.none @localhost:514"
=> nil
matti@acrux ~ $ cat | puppet apply --noop
notice inline_template('*.notice;news.none;cron.none @<%= @hostname
%>:514') notice: Scope(Class[main]):
*.notice;news.none;cron.none @acrux:514
notice: Finished catalog run in 0.03 seconds
matti@acrux ~ $

KW

On Friday, August 31, 2012 6:40:26 PM UTC+1, banjer wrote:

Thanks for the reply KW, but thats not quite what I was asking. Heres the
relevant section of the template:


*.notice;news.none;cron.none @loghost:514

<% if @hostname == "foo" %>
# Provides UDP syslog reception
$ModLoad imudp.so
$UDPServerRun 514
<% end %>

So you can see it lives outside of a <% %> block.

This part: "*.notice;news.none;cron.none @loghost:514*" *should be a
literal string. Its a standard rsyslog configuration. "Loghost" is the
actual hostname of a host in our network that we send all of our servers'
syslogs to. In other words, I don't want it to be evaluated as ERB code.
So how can I have puppet/the template engine ignore the '@' symbol and
treat it as a literal string?

On Friday, August 31, 2012 3:37:48 PM UTC-5, Krzysztof Wilczynski wrote:
Hi,

Works fine for me:

On Tuesday, September 4, 2012 9:03:01 AM UTC-4, jcbollinger wrote:

More generally, the underlying ERB engine will treat anything in your
template but outside ERB blocks (delimited by <% %> or <%= %> or <%# %>) as
literal text, except for <%% (which is translated to <% in the output) and
%%> (which is translated to %>).

Without the actual error message (or, apparently, the template that causes
it) I can only speculate about what the problem may be, but one thing to
look for would be proper closure of all ERB code blocks before the template
text where the error is reported.


John

On Aug 31, 2012, at 10:40 AM, banjer wrote:
Thanks for the reply KW, but thats not quite what I was asking. Heres the relevant section of the template:


*.notice;news.none;cron.none @loghost:514

<% if @hostname == "foo" %>
# Provides UDP syslog reception
$ModLoad imudp.so
$UDPServerRun 514
<% end %>

So you can see it lives outside of a <% %> block.

On Tue, Sep 18, 2012 at 7:20 PM, Jo Rhett wrote:


On Aug 31, 2012, at 10:40 AM, banjer wrote:

Thanks for the reply KW, but thats not quite what I was asking. Heres the
relevant section of the template:


*.notice;news.none;cron.none @loghost:514

<% if @hostname == "foo" %>
# Provides UDP syslog reception
$ModLoad imudp.so
$UDPServerRun 514
<% end %>

So you can see it lives outside of a <% %> block.


Since you didn't seem to get an answer, I think you need to reread the
above. The problem isn't the loghost line. Your if statement clearly uses a
@ character before hostname. I suspect that this is your only problem, and
removing the @ will solve your problem.

--
Jo Rhett
Net Consonance : net philanthropy to improve open source and internet
projects.



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