Can you please elaborate on this. Give me an example of how / where to
use it?
This is an example using constraints. I dont have a group example at hand.
This could be part of your cib:
MailTo RA
<primitive id="mailto" class="ocf" type="MailTo" provider="heartbeat">
<meta_attributes id="ma-mailto">
<attributes>
<nvpair name="target_role" id="ma-mailto-1" value="started"/>
</attributes>
</meta_attributes>
<instance_attributes id="ia-mailto">
<attributes>
<nvpair id="mailto-a-1" name="email"
value="[EMAIL PROTECTED]"/>
</attributes>
</instance_attributes>
</primitive>
MailTo constraints
<rsc_order id="mailto_after_xen_r0" from="mailto" action="start"
to="xen_r0" to_action="start"/>
<rsc_colocation id="mailto_with_xen_r0" from="mailto"
to="xen_r0" score="INFINITY"/>
This is to say that "mailto start" is executed on the same host as
xen_r0 after xen_r0 is started. xen_r0 is another resource in my system.
It may be any other resource in YOUR system.
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