Exported resources would accomplish what you are trying to do, as long as
you don't often and rapidly remove and add upstream app-hosts.
--
Lowe Schmidt | +46 723 867 157
On 18 January 2016 at 14:29, Frederik Bjerggaard Nielsen <f...@firstcom.dk>
wrote:
> Hi,
>
> I am working on making our puppet infrastructure more dynamic where I can
> add any number of nodes and these will automatically be applied in another
> nodes configuration.
>
> *An example:*
> I have X number of hosts running a Java application, which are defined by
> our *javaapp* module with the following define in it (simplified):
>
> define javaapp::site (
> $site_name,
> $site_port ) {
> # Doing some stuff regarding deployment etc here
> }
>
> These are defined in the site.pp file like this:
>
> javaapp::site { 'app01':
> play_site_name => 'app01',
> play_site_port => 9100,
> }
>
> We have a nginx reverse proxy in front of these application servers where
> I need to forward requests to a range of servers. Currently my nginx
> template looks like this:
>
> upstream app-hosts {
> server <%= @host_app_01 %>:9100;
> server <%= @host_app_02 %>:9100;
> }
>
> Where *@host_app_01* and *@host_app_02* have been defined globally in the
> site.pp file with the IP of the nodes.
>
> What I would like to do is to collect an array of the nodes with a
> specific javaapp site name and use it in the nginx template.
>
> I have read a little about exported resources, but I can't figure out
> whether it is the right thing for this situation?
>
> Is it even possible to do with puppet?
>
> We are running puppet version 3.7.5.
>
> Thanks in advance.
>
> Regards
> Frederik Nielsen
>
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