On 02/28/2014 02:32 AM, Asgaroth wrote:
pcs constraint colocation set fs_ldap-clone sftp01-vip ldap1 sequential=true Let me know if this does or doesn't work for you.I have been testing this now for a couple days and I think I must be doing something wrong, firstly though, the command itself completes successfully: # pcs constraint show --full <snip> Resource Sets: set fs_ldap-clone sftp01-vip ldap1 sequential=true (id:pcs_rsc_set) (id:pcs_rsc_colocation) However, if I try to test it by moving, for example, the "sftp01-vip" resource group to another node, then is does not move the ldap1 service with it, example below:
I think what you want is a resource group, that will keep all the resources together. A resource set just simplifies creating an A -> B -> C ordering.
If you put fs_ldap-clone, sftp01-vip & ldap1 all in a group they will stay together. (You can then assign the location constraints to the group to set a preferred node).
Thanks, Chris
Cluster state before resource move: http://pastebin.com/a13ZhyRq Then I do "pcs resource move sftp01-vip bfievsftp02", which moves resources to the node (except the associated ldap1 service) Cluster state after the move: http://pastebin.com/BSyTBEhX Full constraint list: http://pastebin.com/ng6m4C1Z Here is what I am trying to achieve: [1] The sftp0[1-3]-vip groups each have a prefered node (sftp01-vip=node1, sftp02-vip=node2, sftp03-vip=node3 [2] The sftp0[1-3] lsb resources are colocated with sftp0[1-3]-vip groups [3] The ldap[1-3] lsb resources are colocated with sftp0[1-3]-vip groups I managed to achieve the above using logic contraints as listed in the constraint output, however, the sftp0[1-3] and ldap[1-3] lsb resources also depend on fs_cdr-clone and fs_ldap-clone respectively, being available. I thought I would be able to achive that file system dependancy using the colocation set, but this does not seem to work the way I am expecting it to, or, quite possibly, my logic may be slightly(largely) off :) How would I ensure, that in the case of a node failure, the vip group moves to a node which has the fs_cdr and fs_ldap file system resources available? If I can do that, then, I can keep the colocation rule for the sftp/ldap service with the vip group. Or am I thinking about this the wrong way around? Any tips/suggestions would be appreciated. Thanks
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