[Pacemaker] Best way to specify colocation and ordering

[Chris Picton]

On Fri, 13 Aug 2010 14:37:18 +0000, Chris Picton wrote:

>>> On Fri, Aug 13, 2010 at 01:44:28PM +0000, Chris Picton wrote: I have a
>>> drbd backed mysql server which has the following resources:
>>> 
>>> drbd0 -> lvm_data -> mount_data
>>> drbd1 -> lvm_logs -> mount_logs
>>> mysqld
>>> floatingip
>>> 

> Should I need to also specify the demote ordering, 

This has turned out to be true - I need to specify the order on promote 
and demote as follows:

colocation col_data inf: ms_drbd0:Master group_data group_mysql FloatingIP

colocation col_logs inf: ms_drbd1:Master group_logs group_mysql FloatingIP

order order_data inf: ms_drbd0:promote group_data:start group_mysql:start 
FloatingIP:start

order order_data_stop inf: FloatingIP:stop group_mysql:stop 
group_data:stop ms_drbd0:demote

order order_logs inf: ms_drbd1:promote group_logs:start group_mysql:start 
FloatingIP:start

order order_logs_stop inf: FloatingIP:stop group_mysql:stop 
group_logs:stop ms_drbd1:demote

It seems a but long-winded, but does work

Chris