On Sep 15, 2010, at 7:35 PM, タイ シー wrote:
> Greetings
>
> I'm searching for an elegant way to contribute lines to an SNMP configuration
> file from resources scattered throughout a given system's catalog, such that
> from anywhere, the SNMP configuration file can be arbitrarily extended like
> this:
>
> $snmp::lines += "proxy -m ${mib_file} -v 2c -c ${snmp_community}
> localhost:1161 .1.3.6.1.4.1.42.2.145"
>
> Forgive me if this is a solved and documented problem. Querying Dr. Google
> and the Puppet mailing list didn't reveal answers to me. I'm not sure if
> virtual resources and stored configs appropriate, even though usage is
> confined to one given system. The += operator appears ineffective, due to
> scoping (?), even if I declare the following in the snmp class responsible
> for generating snmpd.conf:
>
> class snmp {
> $lines = []
> define line {
> $lines += $name
> }
> ...
> }
>
> Imagine in the theatre of the mind, if you will, snmp::jvm, postgres::server
> et. al. each contribute one or more lines of text to snmpd.conf.
> Concretely, perhaps a feasible implementation is where all of the contributed
> lines in the aggregate are made available to the template engine via a
> variable (an array of strings) when writing out the SNMP configuration file
> ala
>
> file { "/etc/snmp/snmpd.conf":
> content => template("..."),
> ...
> }
>
> Can this be achieved? Is it a naive approach, is there a better way?
> I'm using Puppet 0.25.5 as acquired from EPEL.
Sounds like a job for Augeas or puppet-concat. I think puppet_concat would be
a better fit.
Augeas: http://docs.puppetlabs.com/references/stable/type.html#augeas
puppet_concat: http://github.com/ripienaar/puppet-concat
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