On Wednesday, January 29, 2014 3:41:43 PM UTC+1, jcbollinger wrote:
>
>
> I'm uncertain what you mean. If "doing this" refers to enumerating the
> cluster members in advance, then that can only be something that you, as
> cluster planner, do yourself, outside the scope of Puppet (c.f. "in
> advance").
>
> If you're asking how to communicate that data to Puppet, then whatever
> data service is available is probably fine. Hiera would be great for
> this. With an ENC such as Foreman, you can have the ENC pass the member
> list to Puppet as a top-scope variable or as a parameter of one or more
> classes. In that case, you may need to create a wrapper class around
> whatever third-party module you want to use; its role would be to pass on
> the ENC-provided data as module class parameters.
>
> If "doing this" is supposed to mean something more general, along the
> lines of "using Puppet to arrange my nodes into a cluster," then how best
> to approach that depends on a great many factors. We have already touched
> on some of those: what clustering software you want to use (if any), and
> the extent to which cluster membership can or must be dynamic. We can
> probably help you with devising manifests that will accomplish your
> objectives, but to do so we need more information.
>
>
To give you an idea. I defined the wollowing class:
class sws::services::cluster (
$control_clu_name = $sws::params::control_clu_name,
$control_clu_members = $sws::params::control_clu_members,
) inherits sws::params {
package { 'ccs' :
ensure => installed,
}
class {'pacemaker::corosync':
cluster_name => $control_clu_name,
cluster_members => $control_clu_members,
require => Package['ccs']
}
}
(There's a lot more in there, but I cut out the not so relevant bits...)
Currently this works, if I just declare the control_clu_name and
control_clu_members parameters in advance, and then add this class to the
nodes I listed in control_clu_members via Foreman.
Now when I add another node to the cluster I need to do two things: Add the
class to the node in Foreman, and add it's fqdn to the control_clu_members
parameter. I was just wondering if there was a way to do this last thing
automatically.
Krist
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