[Pacemaker] Some questions about master/slave clones?

[Jason Lee]

hi:
	what's the difference between anonymous clone and master/slave clones?
	how to use crm command to set up a apache master/slave clone?
	
	
	#crm(live)configure: primitive www ocf:heartbeat:apache params confile=/etc/apache2/httpd.conf op
monitor intervals=10s
	#crm(live)configure: ms ss www

	then i got all slaves,how to make one of the node is master?

Online: [ vm1 vm2 vm3 ]

 Master/Slave Set: ss
     Slaves: [ vm1 vm2 vm3 ]