Hi,
I still have trouble setting up DRBD v8. I'm not sure if it is related
to the OCF bug found by Marc Cousin. I think it has something to do with
my constraints not working properly.
I have one resource group which should start my services in the
following order: set IP adress, mount DRBD Filesystem, start webservices
and so on (the order in my CIB is currently mixed up and I can't seem to
change it via the GUI but I will work on that later, right now the
Filesystem does NOT need to be mounted for any of the other services but
later on it will need to be).
Then I have created my Master / Slave resource for DRBD which I could
not add to the group. Afaik a M/S resource can not be part of a group.
Now I need a constraint that the resource group runs on the same node
which is the DRBD master. I tried it with the setup found in Dr.
Schwartzkopffs book but I could not get it to work.
Maybe it does not work because I'm using the resource to mount the
filesystem inside the resource group? Do I need to have a single
resource for the filesystem and then add a 2nd order constraints to
start the group after the filesystem?
Right now it does not even mount the filesystem anymore - without any
constraints I at least got it working once (was a 50:50 chance,
depending which node is currently the master).
I have attached my current CIB.
Thanks in advance for your help,
Tobias
<resources>
<group id="nagios">
<meta_attributes id="nagios_meta_attrs">
<attributes>
<nvpair name="target_role" id="nagios_metaattr_target_role"
value="started"/>
<nvpair id="nagios_metaattr_restart_type" name="restart_type"
value="ignore"/>
<nvpair id="nagios_metaattr_collocated" name="collocated"
value="true"/>
<nvpair id="nagios_metaattr_ordered" name="ordered" value="true"/>
<nvpair id="nagios_metaattr_multiple_active" name="multiple_active"
value="stop_start"/>
</attributes>
</meta_attributes>
<primitive id="httpd" class="lsb" type="httpd" provider="heartbeat">
<operations>
<op id="httpd_monitor" name="status" timeout="15" disabled="false"
role="Started" prereq="quorum" on_fail="restart" interval="30"
start_delay="60"/>
</operations>
</primitive>
<primitive class="ocf" type="IPaddr2" provider="heartbeat" id="nagios-vip">
<instance_attributes id="nagios-vip_instance_attrs">
<attributes>
<nvpair id="d822bc8a-45dd-447b-9303-76c517f7dd6f" name="ip"
value="192.168.1.140"/>
</attributes>
</instance_attributes>
<meta_attributes id="nagios-vip_meta_attrs">
<attributes/>
</meta_attributes>
</primitive>
<primitive id="nagios-core" class="lsb" type="nagios" provider="heartbeat">
<operations>
<op id="nagios_monitor" name="status" interval="30" timeout="15"
start_delay="60" disabled="false" role="Started" prereq="quorum"
on_fail="restart"/>
</operations>
</primitive>
<primitive id="mysql" class="ocf" type="mysql" provider="heartbeat">
<instance_attributes id="mysql_instance_attrs">
<attributes>
<nvpair id="76603ba6-32fe-476c-8342-61da22fa4488" name="config"
value="/etc/my.cnf"/>
<nvpair id="e9df5780-9447-41d1-817d-aeeec8c23255" name="pid"
value="/var/run/mysql/mysqld.pid"/>
<nvpair id="656d98e4-5333-4324-b18c-82ca82153825" name="socket"
value="/var/lib/mysql/mysql.sock"/>
<nvpair id="75448a03-3842-4ba3-aaa5-8f812197eb05" name="binary"
value="/usr/bin/mysqld_safe"/>
<nvpair id="69b3d3ee-8505-4b74-a91c-75efcc6e2286" name="log"
value="/var/log/mysqld.log"/>
</attributes>
</instance_attributes>
</primitive>
<primitive id="drbd_fs" class="ocf" type="Filesystem" provider="heartbeat">
<instance_attributes id="drbd_fs_instance_attrs">
<attributes>
<nvpair id="1a23326f-86aa-44d9-ac40-2a8f01ad8b01" name="device"
value="/dev/drbd0"/>
<nvpair id="32271174-c25f-4703-bc1a-544638434579" name="directory"
value="/drbd"/>
<nvpair id="b00e0e13-a882-42aa-ac02-c98f9f977704" name="fstype"
value="ext3"/>
</attributes>
</instance_attributes>
<meta_attributes id="drbd_fs_meta_attrs">
<attributes/>
</meta_attributes>
</primitive>
</group>
<master_slave id="ms_drbd">
<meta_attributes id="ms_drbd_meta_attrs">
<attributes>
<nvpair id="ms_drbd_metaattr_clone_max" name="clone_max" value="2"/>
<nvpair id="ms_drbd_metaattr_clone_node_max" name="clone_node_max"
value="1"/>
<nvpair id="ms_drbd_metaattr_master_max" name="master_max" value="1"/>
<nvpair id="ms_drbd_metaattr_master_node_max" name="master_node_max"
value="1"/>
<nvpair id="ms_drbd_metaattr_notify" name="notify" value="true"/>
<nvpair id="ms_drbd_metaattr_globally_unique" name="globally_unique"
value="false"/>
<nvpair id="ms_drbd_metaattr_target_role" name="target_role"
value="started"/>
</attributes>
</meta_attributes>
<primitive id="drbd" class="ocf" type="drbd" provider="heartbeat">
<instance_attributes id="drbd_instance_attrs">
<attributes>
<nvpair id="5ce16970-b3f3-4658-8c3d-15ce7a304434"
name="drbd_resource" value="r0"/>
<nvpair id="b7990ad7-99ec-4c0d-87c8-62248b147102"
name="clone_node_max" value="1"/>
<nvpair id="c506f2da-fa3d-49fd-9ddc-1b67f06562f7" name="master_max"
value="1"/>
<nvpair id="355a9e63-b37b-4e69-9a52-b2648df2e47b"
name="master_node_max" value="1"/>
<nvpair id="19777e90-b0cc-4d27-8254-34fde48e10ba" name="drbdconf"
value="/etc/drbd.conf"/>
<nvpair id="c185261b-dc3c-41b1-a9f8-480352793f3e" name="clone_max"
value="2"/>
</attributes>
</instance_attributes>
</primitive>
</master_slave>
</resources>
<constraints>
<rsc_location id="cli-prefer-nagios" rsc="nagios">
<rule id="prefered_cli-prefer-nagios" score="INFINITY">
<expression attribute="#uname" id="f9113f3e-4f24-491c-8136-21f449633810"
operation="eq" value="node01"/>
</rule>
</rsc_location>
<rsc_order id="order_drbd_filesys" from="drbd_fs" action="start"
to="ms_drbd" to_action="promote"/>
<rsc_colocation id="colocation_drbd_filesys" to="ms_drbd" to_role="master"
from="drbd_fs" score="INFINITY"/>
</constraints>
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