Configure a specific poller for hostgroups

Sometimes you want a specific host or a hostgroup to be polled from a specific poller.

Case study

In this HOWTO we will describe how to solve the following case:

2 masters: Master1 and Master2

1 poller: Poller1

2 hosts that we want to be polled from Poller1: Host1 and Host2

Step-by-step guide

This is how you do it.

Create a hostgroup. We will call this poller1-group.
Add Host1 and Host2 to the newly created hostgroup poller1-group.
On Master1 and Master2, modify the merlin.conf located at /opt/monitor/op5/merlin/
1. In the Poller1 section, include the following line:
  hostgroup
```
hostgroup = poller1-group
```
2. Your configuration will look something like this:
  merlin.conf
```
poller Poller1 {    hostgroup = poller1-group    address = Poller1.somedomain.com    port = 15551}
```
When both masters have been edited, restart the masters. On each master, do:
Restart masters
```
mon restart
```