On 08-06-11 16:29, Chris Phillips wrote:
> updated, and hopefully finished:
>
> Facter.add(:bp_nagios_hostgroups) do
> setcode do
>
> if FileTest.exists?("/var/lib/puppet/classes.txt")
> bp_nagios_hostgroups = ""
> File.open("/var/lib/puppet/classes.txt") { |file|
> file.each { |line|
> if line =~ /^(.+)::nagios-client/
> bp_nagios_hostgroups << $1 + " "
> end
> }
> }
> next bp_nagios_hostgroups if bp_nagios_hostgroups
> end
> nil
> end
> end
So, if I understand correctly, you have Nagios hostgroups named exactly
like the Puppet modules, and in the module, you define an empty class
called 'modulename::nagios-client' to do the magic.
Clever, I didn't think of that.
One note: in the code above, you use /var/lib/puppet/classes.txt, but I
think that should be /var/lib/puppet/state/classes.txt, as you correctely
stated in your first mail.
Question: does this solve the 2-run problem on the client? In other words:
during a puppet run, is 'classes.txt' updated before the facts are expanded?
Will explain my setup in a separate mail.
Best regards,
Martijn.
>
>
> On 8 June 2011 15:18, Chris Phillips <[email protected]
> <mailto:[email protected]>> wrote:
>
> Actually, I think I see what you mean here, I have a custom fact mid
> write which looks like this:
>
> Facter.add(:nagios_hostgroups) do
> setcode do
>
> if FileTest.exists?("/var/lib/puppet/classes.txt")
> nagios_hostgroups = ""
> File.open("/var/lib/puppet/classes.txt") { |file|
> file.each { |line|
> if line =~ /(\S+)::nagios_client/
> nagios_hostgroups << $1 + " "
> end
> }
> }
> next nagios_hostgroups if nagios_hostgroups
> end
> nil
> end
> end
>
> So once finished this fact will return a list of all class names which
> are included with the "nagios_client" namespace. So there's actually
> hopefully nothing else to do at all here, no temp files or anything,
> it just requires a naming convention in the modules to be followed.
>
>
> On 8 June 2011 15:00, Brian Gallew <[email protected]
> <mailto:[email protected]>> wrote:
>
> I solved this in a similar manner. I wrote a custom fact (which
> essentially returned /var/lib/puppet/state/classes.txt) and then a
> custom function that generated a list of hostgroups based on that.
>
> On Wed, Jun 8, 2011 at 6:47 AM, Chris Phillips <[email protected]
> <mailto:[email protected]>> wrote:
>
>
>
> On 8 June 2011 13:30, Martijn Grendelman <[email protected]
> <mailto:[email protected]>> wrote:
>
> Hi,
>
> > i want to archive the following:
> >
> > i define an exported ressource for HostX to be monitored
> in nagios:
> >
> > @@nagios_host { $fqdn:
> > ensure => present,
> > alias => $hostname,
> > address => $ipadress,
> > use => "generic-host",
> > hostgroups => ubuntu,
> > target => $icingahostfile,
> > }
> >
> > That fine and works as expected and HostX is in
> hostgroup ubuntu.
> > HostX has included a class ssh which installs the ssh
> services and
> > configures them. Inside this class i want to define that
> HostX is also in
> > hostgroup ssh-server.
> > And another class, which puts the node in another
> environment => there i
> > want to define, that HostX is in hostgroup
> testing-server and so on.
> > How do i archive that? How must the definition inside
> all these classes
> > look like?
>
> That's a lot more difficult than you might expect.
>
> I recently solved it, by collecting all the necessary
> hostgroups for a
> host in a file using 'concat', and creating a custom fact
> (hostgroups)
> that joins all the lines in the hostgroups-file together,
> for use with
> nagios_host's hostgroups parameter.
>
> The biggest drawback is that it takes two puppet runs on
> the target (first
> one for populating the hostgroups-file, so that the custom
> fact is set
> properly on the second run) before the nagios server can
> collect the
> exported hosts, so it takes a while.
>
>
> Well that's mad... I literally just was about to ask the exact
> same question after a month of wondering...
>
> so where do you put this fact? Sounds like it is on the nagios
> "client" side, which makes sense in terms of pulling it out,
> but how does it get in there in the first place? Can you show
> how this file on each client is managed? That seems to be the
> only bit I'm not clear on. Are you just putting in a single
> word for each class? Are you at all able to manage the class
> being removed from the client? Would you need to routinely
> purge the file? have a initial stage class that wipes the file?
>
> Thanks
>
> Chris
>
> --
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