[Pacemaker] MySQL HA with pacemaker and DRBD - How to monitor mysql service
emmanuel segura
emi2fast at gmail.com
Thu Mar 22 10:29:52 EDT 2012
put migration-thresold global in your cluster property
Il giorno 22 marzo 2012 15:23, coma <coma.inf at gmail.com> ha scritto:
> Thank you for your responses,
>
> I have added the migration-treshold on my mysqld ressource, when i kill or
> manually stop mysql on one node, there is not failover on the second node.
> Also, when i look crm_mon --failcounts, i can see "mysqld:
> migration-threshold=1000000 fail-count=1000000", so i don"t anderstand
> why migration-threshold not equal 2?
>
> Migration summary:
> * Node node1:
> mysqld: migration-threshold=1000000 fail-count=1000000
> * Node node2:
>
> Failed actions:
> mysqld_monitor_10000 (node=node1, call=90, rc=7, status=complete): not
> running
> mysqld_stop_0 (node=node1, call=93, rc=1, status=complete): unknown
> error
>
>
>
> configuration:
>
> node node1 \
> attributes standby="off"
> node node2 \
> attributes standby="off"
> primitive Cluster-VIP ocf:heartbeat:IPaddr2 \
> params ip="x.x.x.x" broadcast="x.x.x.x" nic="eth0"
> cidr_netmask="21" iflabel="VIP1" \
> op monitor interval="10s" timeout="20s" \
> meta is-managed="true"
> primitive datavg ocf:heartbeat:LVM \
> params volgrpname="datavg" exclusive="true" \
> op start interval="0" timeout="30" \
> op stop interval="0" timeout="30"
> primitive drbd_mysql ocf:linbit:drbd \
> params drbd_resource="drbd-mysql" \
> op monitor interval="15s"
> primitive fs_mysql ocf:heartbeat:Filesystem \
> params device="/dev/datavg/data" directory="/data" fstype="ext3"
> primitive mysqld lsb:mysqld \
> op monitor interval="10s" timeout="30s" \
> op start interval="0" timeout="120" \
> op stop interval="0" timeout="120" \
> meta target-role="Started" migration-threshold="2"
> failure-timeout="20s"
> group mysql datavg fs_mysql Cluster-VIP mysqld
> ms ms_drbd_mysql drbd_mysql \
> meta master-max="1" master-node-max="1" clone-max="2"
> clone-node-max="1" notify="true"
> location master-prefer-node-1 Cluster-VIP 25: node1
> colocation mysql_on_drbd inf: mysql ms_drbd_mysql:Master
> order mysql_after_drbd inf: ms_drbd_mysql:promote mysql:start
> property $id="cib-bootstrap-options" \
>
> dc-version="1.1.5-1.1.el5-01e86afaaa6d4a8c4836f68df80ababd6ca3902f" \
> cluster-infrastructure="openais" \
> expected-quorum-votes="2" \
> stonith-enabled="false" \
> no-quorum-policy="ignore" \
> last-lrm-refresh="1332425337"
> rsc_defaults $id="rsc-options" \
> resource-stickiness="100"
>
>
>
> 2012/3/22 Andreas Kurz <andreas at hastexo.com>
>
>> On 03/22/2012 01:51 PM, coma wrote:
>> > Ah yes thank you, the service status mysql is now monitored, but the
>> > failover is not performed?
>>
>> As long as local restarts are successful there is no need for a failover
>> ... there is migration-treshold to limit local restart tries.
>>
>> Regards,
>> Andreas
>>
>> --
>> Need help with Pacemaker?
>> http://www.hastexo.com/now
>>
>> >
>> >
>> >
>> > 2012/3/22 emmanuel segura <emi2fast at gmail.com <mailto:
>> emi2fast at gmail.com>>
>> >
>> > sorry
>> > I think you missed the op monitor operetion in your primitive
>> definition
>> >
>> >
>> >
>> > Il giorno 22 marzo 2012 11:52, emmanuel segura <emi2fast at gmail.com
>> > <mailto:emi2fast at gmail.com>> ha scritto:
>> >
>> > I think you missed the op monitor operetion you primitive
>> definition
>> >
>> > Il giorno 22 marzo 2012 11:33, coma <coma.inf at gmail.com
>> > <mailto:coma.inf at gmail.com>> ha scritto:
>> >
>> > Hello,
>> >
>> > I have a question about mysql service monitoring into a
>> > MySQL HA cluster with pacemaker and DRBD,
>> > I have set up a configuration to allow a failover between
>> > two nodes, it work fine when a node is offline (or standby),
>> > but i want to know if it is possible to monitor the mysql
>> > service to perform a failover if mysql is stopped or
>> > unavailable?
>> >
>> > Thank you in advance for any response.
>> >
>> > My crm configuration:
>> >
>> > node node1 \
>> > attributes standby="off"
>> > node node2 \
>> > attributes standby="off"
>> > primitive Cluster-VIP ocf:heartbeat:IPaddr2 \
>> > params ip="x.x.x.x" broadcast="x.x.x.x" nic="eth0"
>> > cidr_netmask="21" iflabel="VIP1" \
>> > op monitor interval="10s" timeout="20s" \
>> > meta is-managed="true"
>> > primitive datavg ocf:heartbeat:LVM \
>> > params volgrpname="datavg" exclusive="true" \
>> > op start interval="0" timeout="30" \
>> > op stop interval="0" timeout="30"
>> > primitive drbd_mysql ocf:linbit:drbd \
>> > params drbd_resource="drbd-mysql" \
>> > op monitor interval="15s"
>> > primitive fs_mysql ocf:heartbeat:Filesystem \
>> > params device="/dev/datavg/data" directory="/data"
>> > fstype="ext3"
>> > primitive mysqld lsb:mysqld
>> > group mysql datavg fs_mysql Cluster-VIP mysqld
>> > ms ms_drbd_mysql drbd_mysql \
>> > meta master-max="1" master-node-max="1"
>> > clone-max="2" clone-node-max="1" notify="true"
>> > location master-prefer-node-1 Cluster-VIP 25: node1
>> > colocation mysql_on_drbd inf: mysql ms_drbd_mysql:Master
>> > order mysql_after_drbd inf: ms_drbd_mysql:promote
>> mysql:start
>> > property $id="cib-bootstrap-options" \
>> >
>> >
>> dc-version="1.1.5-1.1.el5-01e86afaaa6d4a8c4836f68df80ababd6ca3902f"
>> > \
>> > cluster-infrastructure="openais" \
>> > expected-quorum-votes="2" \
>> > stonith-enabled="false" \
>> > no-quorum-policy="ignore" \
>> > last-lrm-refresh="1332254494"
>> > rsc_defaults $id="rsc-options" \
>> > resource-stickiness="100"
>> >
>> >
>> > _______________________________________________
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>> >
>> >
>> >
>> >
>> > --
>> > esta es mi vida e me la vivo hasta que dios quiera
>> >
>> >
>> >
>> >
>> > --
>> > esta es mi vida e me la vivo hasta que dios quiera
>> >
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>> >
>> >
>> >
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>>
>>
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>>
>
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