Hi, First of all my goal is to set up a two-node cluster with pacemaker to serve our webhosting service. This config sites on two vmware virtual machines for testing purposes now. Both of them runs Debian Lenny.
Here are the basic rules I set up: node0 has virtual ip drbd primary filesystem mounted under /mnt nfs server offers /mnt mount point to node1 node1 drbd secondary node nfs_client mounts node0's /mnt dir and it should be rw for both nodes If node0 fails then node1 will act as primary drbd node, take over virtual ip and mount drbd partition under /mnt dir and will not start nfs_client resource because it makes no sense (nfs_client should be take down before drbd partition get mounted under /mnt). If node1 fails the nothing should be happen because nfs_client only run node which has secondary drbd partition So my problems are the following. 1. If I migrate apache-group resorce to another node then nfs_client won't release the /mnt mount point (I know according to this config it should not). I think I need some clever constraint to achieve this. 2. If I shot down node1 (suppose that node0 the master at the moment and runs apache-group) then nothing happens as expected but if node1 comes online again the apache-group start to migrate to node1. I don't understand why because there is a constraint for this to get apache-group run on node which primary drbd resource and in this situation node0 is. crm configure show node node0 \ attributes standby="off" node node1 \ attributes standby="off" primitive drbd0 ocf:heartbeat:drbd \ params drbd_resource="r0" \ op monitor interval="59s" role="Master" timeout="30s" \ op monitor interval="60s" role="Slave" timeout="30s" primitive fs0 ocf:heartbeat:Filesystem \ params fstype="ext3" directory="/mnt" device="/dev/drbd0" \ meta target-role="Started" primitive nfs_client ocf:heartbeat:Filesystem \ params fstype="nfs" directory="/mnt/" device="192.168.1.40:/mnt/" options="hard,intr,noatime,rw,nolock,tcp,timeo=50" \ meta target-role="Stopped" primitive nfs_server lsb:nfs-kernel-server \ op monitor interval="1min" primitive virtual-ip ocf:heartbeat:IPaddr2 \ params ip="192.168.1.40" broadcast="192.168.1.255" nic="eth0" cidr_netmask="24" \ op monitor interval="21s" timeout="5s" target-role="Started" group apache-group fs0 virtual-ip nfs_server \ meta target-role="Started" ms ms-drbd0 drbd0 \ meta clone-max="2" notify="true" globally-unique="false" target-role="Started" location cli-prefer-apache-group apache-group \ rule $id="cli-prefer-rule-apache-group" inf: #uname eq node0 colocation apache-group-on-ms-drbd0 inf: apache-group ms-drbd0:Master colocation co_nfs_client inf: nfs_client ms-drbd0:Slave order ms-drbd0-before-apache-group inf: ms-drbd0:promote apache-group:start order ms-drbd0-before-nfs_client inf: ms-drbd0:promote nfs_client:start property $id="cib-bootstrap-options" \ dc-version="1.0.8-2c98138c2f070fcb6ddeab1084154cffbf44ba75" \ cluster-infrastructure="openais" \ stonith-enabled="false" \ no-quorum-policy="ignore" \ expected-quorum-votes="2" \ last-lrm-refresh="1271453094" node1:~# crm_mon -1 ============ Last updated: Fri Apr 16 23:49:30 2010 Stack: openais Current DC: node0 - partition with quorum Version: 1.0.8-2c98138c2f070fcb6ddeab1084154cffbf44ba75 2 Nodes configured, 2 expected votes 3 Resources configured. ============ Online: [ node0 node1 ] Resource Group: apache-group fs0 (ocf::heartbeat:Filesystem): Started node1 (unmanaged) FAILED virtual-ip (ocf::heartbeat:IPaddr2): Stopped nfs_server (lsb:nfs-kernel-server): Stopped Master/Slave Set: ms-drbd0 Masters: [ node0 ] Slaves: [ node1 ] nfs_client (ocf::heartbeat:Filesystem): Started node1 (unmanaged) FAILED Failed actions: nfs_client_start_0 (node=node0, call=98, rc=1, status=complete): unknown error fs0_stop_0 (node=node1, call=9, rc=-2, status=Timed Out): unknown exec error nfs_client_stop_0 (node=node1, call=7, rc=-2, status=Timed Out): unknown exec error I really appreciate any idea. Thank you in advance. Regards, Sandor _______________________________________________ Openais mailing list Openais@lists.linux-foundation.org https://lists.linux-foundation.org/mailman/listinfo/openais