[Puppet Users] "Each" loop issue

Hayo.

Other than s/notice/notify/ for best effect, that works a treat when I
invoke it with puppet apply --parser future test.pp (added an 'include
mytestclass' for invocation, but that's it).

The parser=future is required on whatever node is doing the catalog
compilation, and needs to go in [main] for best effect, I believe
(certainly won't do anything in [agent], might be sufficient in [master])

You probably meant

         notify { $x: }

notice is a logging function, and you can do

         notice $x
For this snippet to work, you must also do

     include mytestclass

outside the scope of that class, otherwise nothing happens.
As another poster suggested, maybe you have the parser=future setting in
the wrong section.

Hope the above helps

- henrik

Henrik, Tristan, thanks for your replies!

I've added "parser = future" on both master and agent, inside [main], and
also I'm still using "--parser future", just in case.
You both were right, and I'd use "notify" instead of "notice" in that
snippet.

I think that parser option is working now, but it's breaking a template
that was working until now. So here I go again for your help, as I don't
think that the parser should be doing this.

Here is the output of the new error:

*Error: Could not retrieve catalog from remote server: Error 400 on SERVER:
Failed to parse template sudo/sudoers.erb:*
* Filepath:
/etc/puppet/environments/integration/modules/sudo/templates/sudoers.erb*
* Line: 42*
* Detail: undefined method `each' for nil:NilClass*
* on node test01*

Here is the line 42 of the template file:

....<snip>...
DEPLOY ALL = NOPASSWD: /usr/bin/service apache2 restart
DEPLOY ALL = NOPASSWD: /usr/bin/service php5-fpm restart
*<% @server_roles.each do |role| -%> <====== line 42*
<% if role == "testuser" %>
DEPLOY ALL = NOPASSWD: /usr/bin/service tomcat7 restart
DEPLOY ALL = NOPASSWD: /usr/bin/service tomcat7 start
DEPLOY ALL = NOPASSWD: /usr/bin/service tomcat7 stop
<% end %>
...<snip>....

I've tried with "each @server_roles" too, but still broken.
May be enabling the extra features of the parser, puppet tries to do
something else with the word "each", but I'm totally lost here.

Is this behavior expected? Is there any way that I can debug any deeper on
this?

Again, thanks in advance for any help.

Cheers,

Martin




El martes, 1 de julio de 2014 12:27:16 UTC-3, Henrik Lindberg escribió:

That error means that the @server_roles variable is holding nil, as nil
does not have an each method to call. Perhaps the new parser is evaluating
things differently and not setting that variable.

Hi Ellison,

That's right. That seems to be the case.
I've been googling around, and seems that the new parser has a different
scope from where it can grab the variables. Sadly, I can't find the way to
make it work.
Should I include something special in order to make the hiera variable
available to the template?

Again, thanks for taking the time.

Best regards,


El jueves, 3 de julio de 2014 13:57:46 UTC-3, Ellison Marks escribió:

There was a change to dynamic scoping - they were allowed when they
should not. That problem was fixed in the future parser branch of the
logic. This issue is PUP-1220.

Not seeing your entire configuration it is hard to tell where the
missing variable is defined and if it should be visible or not.
If you can reference the variable at the point where you are making the
call to produce the template text, then something odd is going on.

say doing something like:

notice "The variable is set to: $the_var"
template(...)

- henrik

Henrik,

Thank you for such clear reply!. I'll start debugging to find out what I'm
missing here.

I want to thank you for your support to the Puppet community, developing or
taking the time to answer here in the list, your participation is really
appreciated.
In the other side, I think that documentation for the new parser is a bit
poor. I've found more information googling around than in the official doc,
and may be some questions in the list (as mine for ex) can be avoided with
some improvements in the doc site. Also some troubleshooting guide would be
awesome.

Thanks again for all your hard work!

Cheers,

Martin





2014-07-03 23:01 GMT-03:00 Henrik Lindberg <henrik.lindberg@cloudsmith.com>:

There will be new documentation for the new parser when it is released,
as Puppet 4.0.0.

We have also been busy writing a specification of the language:
https://github.com/puppetlabs/puppet-specifications and we recently made
this w.i.p public. Please note that the specification is not finalized
yet so it cannot yet be considered authoritative. Also note that the
spec is not as user friendly as the regular documentation.
Yeah, I would have loved to have had one - but for something like that
to be comprehensive it would be daunting to produce. Have you checked
out https://ask.puppetlabs.com/questions/ ?

- henrik

Henrik,

Didn't know about "Ask". I've added to the bookmarks for the next time ;)

Thanks!


2014-07-04 10:53 GMT-03:00 Henrik Lindberg <henrik.lindberg@cloudsmith.com>: