>>> Eric Robinson <eric.robin...@psmnv.com> schrieb am 10.11.2016 um 09:18 in Nachricht <dm5pr03mb2729ddc78b09c368c6a068b4fa...@dm5pr03mb2729.namprd03.prod.outlook.com>
> I can't believe I'm still unclear in this, but the behavior seems to be > different with different versions of Pacemaker. > > What do the parenthesis accomplish in a statement like this? > > colocation c_clust15 inf: ( p_mysql_029 p_mysql_484 p_mysql_734 ) > p_vip_clust15 p_fs_clust15 p_lv_drbd0 ms_drbd0:Master > order o_clust15 inf: ms_drbd0:promote p_lv_drbd0 p_fs_clust15 p_vip_clust15 > ( p_mysql_029 p_mysql_484 p_mysql_734 ) > > I've noticed that on one this cluster, if any of the mysql instances fail, > the whole cluster fails (vip, fs, lvm, etc.). It does not do that on other > clusters. We also use similar things, and they seem to work ;-) colocation col_Xen_CFS inf: ( prm_xen_v01 prm_xen_v02 prm_xen_v03 ) cln_CFS_VMs_fs meaning any of the prm_xen_v* can only run where the VM filesystem is running order ord_CFS_VMs_Xen inf: cln_CFS_VMs_fs ( prm_xen_v01 prm_xen_v02 prm_xen_v03 ) meaning any of the xen VMs must be started after the VM filesystem. See "Resource sets" in the manual page of crm: Three different types of resource sets are provided by crmsh, and each one implies different values for the two resource set attributes, sequential and require-all. sequential If true, the resources in the set do not depend on each other internally. Setting sequential to true implies a strict order of dependency within the set. require-all If false, only one resource in the set is required to fulfil the requirements of the set. The set of A, B and C with require-all set to false is be read as "A OR B OR C" when its dependencies are resolved. The three types of resource sets modify the attributes in the following way: 1. Implicit sets (no brackets). sequential=true, require-all=true 2. Parenthesis set (( ... )). sequential=false, require-all=true 3. Bracket set ([ ... ]). sequential=false, require-all=false > > --Eric > > > > > > _______________________________________________ > Users mailing list: Users@clusterlabs.org > http://clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org _______________________________________________ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org