Finding out which hosts are in a hostgroup from within a puppet class

Krist_van_Besien · November 27, 2013, 1:23pm

Hello,

I'm trying to use foreman/puppet to setup a pacemaker cluster.

The command to configure a cluster looks like this:

pcs cluster setup --name mycluster node1 node2 node3 …

This command you have to perform on each node.

Now what I would like to do is somehow make this easy by creating class,
and assigning this class to a host group. Now I would like to somehow find
out what the members of a hostgroup are from within this class, so I can
use that to build the command that needs to be executed.

Is there a straightforward way to do this?

Krist

ohadlevy · November 27, 2013, 1:41pm

> Hello,
>
> I'm trying to use foreman/puppet to setup a pacemaker cluster.
>
> The command to configure a cluster looks like this:
>
> pcs cluster setup --name mycluster node1 node2 node3 …
>
> This command you have to perform on each node.
>
> Now what I would like to do is somehow make this easy by creating class, and
> assigning this class to a host group. Now I would like to somehow find out
> what the members of a hostgroup are from within this class, so I can use
> that to build the command that needs to be executed.
>
> Is there a straightforward way to do this?

Sure,I think a step in the right direction would be

Ohad

···

On Wed, Nov 27, 2013 at 3:23 PM, Krist van Besien wrote: > > Krist > > > -- > You received this message because you are subscribed to the Google Groups > "Foreman users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to foreman-users+unsubscribe@googlegroups.com. > To post to this group, send email to foreman-users@googlegroups.com. > Visit this group at http://groups.google.com/group/foreman-users. > For more options, visit https://groups.google.com/groups/opt_out.

Krist_van_Besien · November 27, 2013, 3:39pm

I tried this:

$clustermembers = foreman('hosts',"hostgroup = ${hostgroup}")
$mysql_clu_member_addrs = join($clustermembers, " ")

And I got this:
Error: Could not retrieve catalog from remote server: Error 400 on SERVER:
Unknown function foreman

So obviously I'm missing something. But what?

Krist

···

On Wednesday, November 27, 2013 2:41:59 PM UTC+1, ohad wrote: > > > > Sure,I think a step in the right direction would be > http://blog.theforeman.org/2012/01/getting-foreman-search-results-into.html >

Jelle_B1 · November 28, 2013, 6:52am

I think you forgot to create the function.

github.com

ohadlevy/puppet-foreman/blob/master/foreman/lib/puppet/parser/functions/foreman.rb

# Query Foreman
# example usage:
#
# query for hosts
# ~~~~~~~~~~~~~~~
# $myhosts = foreman("hosts","facts.domain ~ lab")
# returns all hosts which have lab as part of their domain.
#
# or a more complex search term
# $myhosts = foreman("hosts", "hostgroup ~ web and environment = production and status.failed = 0 and facts.timezone = EST and last_report < \"1 hour ago\""
#
# query for facts
# ~~~~~~~~~~~~~~~
# get manufactor value for host "xyz"
# $manufactor = foreman("fact_values", "name = manufacturer and host = xyz"
# which in this case will return a hash
# {"xyz":{"manufacturer":"LENOVO"}}

require "net/http"
require "net/https"

This file has been truncated. show original

Either that or Ohad has changed something as this gets installed when you
install foreman via the installer. But as the error cant find the function
my money is on the first one.

···

On Wednesday, November 27, 2013 4:39:22 PM UTC+1, Krist van Besien wrote: > > > > On Wednesday, November 27, 2013 2:41:59 PM UTC+1, ohad wrote: >> >> >> >> Sure,I think a step in the right direction would be >> >> http://blog.theforeman.org/2012/01/getting-foreman-search-results-into.html >> > > I tried this: > > $clustermembers = foreman('hosts',"hostgroup = ${hostgroup}") > $mysql_clu_member_addrs = join($clustermembers, " ") > > And I got this: > Error: Could not retrieve catalog from remote server: Error 400 on SERVER: > Unknown function foreman > > So obviously I'm missing something. But what? > > Krist > > > > >

ohadlevy · November 28, 2013, 7:08am

> I think you forgot to create the function.
>
> https://github.com/ohadlevy/puppet-foreman/blob/master/foreman/lib/puppet/parser/functions/foreman.rb
>
> Either that or Ohad has changed something as this gets installed when you
> install foreman via the installer. But as the error cant find the function
> my money is on the first one.
>
indeed the installer distribute this function by default, however, the
one you refered to is pretty old, please use
https://github.com/theforeman/puppet-foreman/blob/master/lib/puppet/parser/functions/foreman.rb

Ohad

···

On Thu, Nov 28, 2013 at 8:52 AM, Jelle B wrote: > > On Wednesday, November 27, 2013 4:39:22 PM UTC+1, Krist van Besien wrote: >> >> >> >> On Wednesday, November 27, 2013 2:41:59 PM UTC+1, ohad wrote: >>> >>> >>> >>> Sure,I think a step in the right direction would be >>> >>> http://blog.theforeman.org/2012/01/getting-foreman-search-results-into.html >> >> >> I tried this: >> >> $clustermembers = foreman('hosts',"hostgroup = ${hostgroup}") >> $mysql_clu_member_addrs = join($clustermembers, " ") >> >> And I got this: >> Error: Could not retrieve catalog from remote server: Error 400 on SERVER: >> Unknown function foreman >> >> So obviously I'm missing something. But what? >> >> Krist >> >> >> >> > > -- > You received this message because you are subscribed to the Google Groups > "Foreman users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to foreman-users+unsubscribe@googlegroups.com. > To post to this group, send email to foreman-users@googlegroups.com. > Visit this group at http://groups.google.com/group/foreman-users. > For more options, visit https://groups.google.com/groups/opt_out.