[Pacemaker] Locating a clone on 2 nodes of a 4 node cluster

[Andrew Beekhof]

On Sun, Dec 9, 2012 at 12:23 AM, Art Zemon <art at hens-teeth.net> wrote:
> Hello,
>
> I need some help with the syntax for making a clone run on two nodes of a four node cluster. I have two OCFS2 filesystems:
>    * cl_fs_share_db should run on nodes aztestc3 and aztestc4
>    * cl_fs_share_plesk should run on nodes aztestc1 and aztestc2

Create location constraints that set the score to -INFINITY for the
nodes on which the clone should not run.
Also, set clone-max=2

> The files /etc/drbd.d/sharedb.res and /etc/drbd.d/shareplesk.res each specify the correct pair of nodes.
>
> How do I update the following pacemaker configuration? Each clone should run in dual-primary mode on both of its nodes.
>
> Side question: I have configured just one o2cb. Do I need two of them?

No.

>
> Thank you,
>     -- Art Z.
>
>
> node aztestc1 \
>         attributes standby="off"
> node aztestc2 \
>         attributes standby="off"
> node aztestc3 \
>         attributes standby="off"
> node aztestc4 \
>         attributes standby="off"
> primitive p_drbd_share_db ocf:linbit:drbd \
>         params drbd_resource="sharedb" \
>         op monitor interval="15s" role="Master" timeout="20s" \
>         op monitor interval="20s" role="Slave" timeout="20s" \
>         op start interval="0" timeout="240s" \
>         op stop interval="0" timeout="100s"
> primitive p_drbd_share_plesk ocf:linbit:drbd \
>         params drbd_resource="shareplesk" \
>         op monitor interval="15s" role="Master" timeout="20s" \
>         op monitor interval="20s" role="Slave" timeout="20s" \
>         op start interval="0" timeout="240s" \
>         op stop interval="0" timeout="100s"
> primitive p_fs_share_db ocf:heartbeat:Filesystem \
>         params device="/dev/drbd/by-res/share" directory="/share" fstype="ocfs2" options="rw,noatime" \
>         op start interval="0" timeout="60" \
>         op stop interval="0" timeout="60" \
>         op monitor interval="20" timeout="40"
> primitive p_fs_share_plesk ocf:heartbeat:Filesystem \
>         params device="/dev/drbd/by-res/share" directory="/share" fstype="ocfs2" options="rw,noatime" \
>         op start interval="0" timeout="60" \
>         op stop interval="0" timeout="60" \
>         op monitor interval="20" timeout="40"
> primitive p_mysqld lsb:mysql \
>         meta target-role="Started" \
>         op monitor interval="10" timeout="20"
> primitive p_o2cb ocf:pacemaker:o2cb \
>         params stack="cman" \
>         op start interval="0" timeout="90" \
>         op stop interval="0" timeout="100" \
>         op monitor interval="10" timeout="20"
> primitive p_stonith stonith:fence_ec2 \
>         params pcmk_host_check="static-list" pcmk_host_list="aztestc1 aztestc2 aztestc3 aztestc4" \
>         op monitor interval="600s" timeout="300s" \
>         op start start-delay="10s" interval="0"
> ms ms_drbd_share_db p_drbd_share_db \
>         meta master-max="2" notify="true" interleave="true" clone-max="2" is-managed="true" target-role="Stopped"
> ms ms_drbd_share_plesk p_drbd_share_plesk \
>         meta master-max="2" notify="true" interleave="true" clone-max="2" is-managed="true" target-role="Stopped"
> clone cl_fencing p_stonith \
>         meta target-role="Started"
> clone cl_fs_share_db p_fs_share_db \
>         meta interleave="true" notify="true" globally-unique="false" target-role="Started"
> clone cl_fs_share_plesk p_fs_share_plesk \
>         meta interleave="true" notify="true" globally-unique="false" target-role="Started"
> clone cl_o2cb p_o2cb \
>         meta interleave="true" globally-unique="false" target-role="Stopped"
> order o_mysqld inf: cl_fs_share_db p_mysqld
> order o_ocfs2db inf: ms_drbd_share_db:promote cl_o2cb:start
> order o_ocfs2plesk inf: ms_drbd_share_plesk:promote cl_o2cb:start
> order o_sharedb inf: cl_o2cb cl_fs_share_db
> order o_shareplesk inf: cl_o2cb cl_fs_share_plesk
> property $id="cib-bootstrap-options" \
>         stonith-enabled="true" \
>         stonith-timeout="180s" \
>         no-quorum-policy="freeze" \
>         dc-version="1.1.6-9971ebba4494012a93c03b40a2c58ec0eb60f50c" \
>         cluster-infrastructure="cman" \
>         last-lrm-refresh="1354969282"
> rsc_defaults $id="rsc-options" \
>         resource-stickiness="100"
>
>
>
> --
> Art Zemon, President
>  [http://www.hens-teeth.net/] Hen's Teeth Network for reliable web hosting and programming
>  (866)HENS-NET / (636)447-3030 ext. 200 / www.hens-teeth.net
>
>
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