[Pacemaker] Pacemaker 1.1.6 order possible bug ?

Tomáš Vavřička vavricka at ttc.cz
Wed Sep 5 02:04:26 EDT 2012 

On 09/04/2012 11:51 PM, Andrew Beekhof wrote:
> On Mon, Sep 3, 2012 at 3:41 PM, Tomáš Vavřička <vavricka at ttc.cz> wrote:
>> Hello,
>>
>> Sorry If I send same question twice, but message did not appeared on mailing
>> list.
>>
>> I have a problem with orders in pacemaker 1.1.6 and corosync 1.4.1.
>>
>> Order below is working for failover, but it is not working when one cluster
>> node starts up (drbd stays in Slave state and ms_toponet is started before
>> DRBD gets promoted).
>>
>> order o_start inf: ms_drbd_postgres:promote postgres:start
>> ms_toponet:promote monitor_cluster:start
>>
>> Order below is not working for failover (it kills slave toponet app and
>> start it again) but it is working correctly when cluster starts up.
>>
>> order o_start inf: ms_drbd_postgres:promote postgres:start ms_toponet:start
>> ms_toponet:promote monitor_cluster:start
> I would recommend breaking this into "basic" constraints.
> The shell syntax for constraint sets has been a source of confusion for a while.
>
> order o1 inf: ms_drbd_postgres:promote postgres:start
> order o2 inf: postgres:start ms_toponet:start
> order o3 inf: ms_toponet:start ms_toponet:promote
> order o4 inf: ms_toponet:promote monitor_cluster:start
>
> If you still have problems with the expanded form, let us know.


Still same behaviour (when ms_toponet:Master fails, ms_toponet:Slave is 
restarted). I tried to split colocations as well with no success.


>> I want to the pacemaker to act as in 1.0.12 version.
>> * when toponet master app is killed, move postgres resource to other node
>> and promote ms_toponet and ms_drbd_postgres to Master
>> * when one node is starting promote DRBD to master is is UpToDate
>>
>> Am I doing something wrong?
>>
>> It looks to me pacemaker ignores some orders (pacemaker should wait for DRBD
>> promotion when starting toponet app, but toponet app is started right after
>> DRBD start (slave)). I tried to solve this by different orders with
>> combination symmetrical=false, split orders, different orders for start and
>> stop, but no success at all (seems to me like completely ignoring
>> symmetrical=false directive).
>>
>> Pacemaker 1.1.7 is not working for me, because it has broken on-fail
>> directive.
>>
>> crm_mon output:
>>
>> ============
>> Last updated: Fri Aug 31 14:51:11 2012
>> Last change: Fri Aug 31 14:50:27 2012 by hacluster via crmd on toponet30
>> Stack: openais
>> Current DC: toponet30 - partition WITHOUT quorum
>> Version: 1.1.6-b988976485d15cb702c9307df55512d323831a5e
>> 2 Nodes configured, 2 expected votes
>> 10 Resources configured.
>> ============
>>
>> Online: [ toponet30 toponet31 ]
>>
>> st_primary      (stonith:external/xen0):        Started toponet30
>> st_secondary    (stonith:external/xen0):        Started toponet31
>>   Master/Slave Set: ms_drbd_postgres
>>       Masters: [ toponet30 ]
>>       Slaves: [ toponet31 ]
>>   Resource Group: postgres
>>       pg_fs      (ocf::heartbeat:Filesystem):    Started toponet30
>>       PGIP       (ocf::heartbeat:IPaddr2):       Started toponet30
>>       postgresql (ocf::heartbeat:pgsql): Started toponet30
>> monitor_cluster (ocf::heartbeat:monitor_cluster):       Started toponet30
>>   Master/Slave Set: ms_toponet
>>       Masters: [ toponet30 ]
>>       Slaves: [ toponet31 ]
>>
>> configuration:
>>
>> node toponet30
>> node toponet31
>> primitive PGIP ocf:heartbeat:IPaddr2 \
>>          params ip="192.168.100.3" cidr_netmask="29" \
>>          op monitor interval="5s"
>> primitive drbd_postgres ocf:linbit:drbd \
>>          params drbd_resource="postgres" \
>>          op start interval="0" timeout="240s" \
>>          op stop interval="0" timeout="120s" \
>>          op monitor interval="5s" role="Master" timeout="10s" \
>>          op monitor interval="10s" role="Slave" timeout="20s"
>> primitive monitor_cluster ocf:heartbeat:monitor_cluster \
>>          op monitor interval="30s" \
>>          op start interval="0" timeout="30s" \
>>          meta target-role="Started"
>> primitive pg_fs ocf:heartbeat:Filesystem \
>>          params device="/dev/drbd0" directory="/var/lib/pgsql" fstype="ext3"
>> primitive postgresql ocf:heartbeat:pgsql \
>>          op start interval="0" timeout="80s" \
>>          op stop interval="0" timeout="60s" \
>>          op monitor interval="10s" timeout="10s" depth="0"
>> primitive st_primary stonith:external/xen0 \
>>          op start interval="0" timeout="60s" \
>>          params hostlist="toponet31:/etc/xen/vm/toponet31"
>> dom0="172.16.103.54"
>> primitive st_secondary stonith:external/xen0 \
>>          op start interval="0" timeout="60s" \
>>          params hostlist="toponet30:/etc/xen/vm/toponet30"
>> dom0="172.16.103.54"
>> primitive toponet ocf:heartbeat:toponet \
>>          op start interval="0" timeout="180s" \
>>          op stop interval="0" timeout="60s" \
>>          op monitor interval="10s" role="Master" timeout="20s"
>> on-fail="standby" \
>>          op monitor interval="20s" role="Slave" timeout="40s" \
>>          op promote interval="0" timeout="120s" \
>>          op demote interval="0" timeout="120s"
>> group postgres pg_fs PGIP postgresql
>> ms ms_drbd_postgres drbd_postgres \
>>          meta master-max="1" master-node-max="1" clone-max="2"
>> clone-node-max="1" notify="true" target-role="Master"
>> ms ms_toponet toponet \
>>          meta master-max="1" master-node-max="1" clone-max="2"
>> clone-node-max="1" target-role="Master"
>> location loc_st_pri st_primary -inf: toponet31
>> location loc_st_sec st_secondary -inf: toponet30
>> location master-prefer-node1 postgres 100: toponet30
>> colocation pg_on_drbd inf: monitor_cluster ms_toponet:Master postgres
>> ms_drbd_postgres:Master
>> order o_start inf: ms_drbd_postgres:start ms_drbd_postgres:promote
>> postgres:start ms_toponet:start ms_toponet:promote monitor_cluster:start
>> property $id="cib-bootstrap-options" \
>>          dc-version="1.1.6-b988976485d15cb702c9307df55512d323831a5e" \
>>          cluster-infrastructure="openais" \
>>          expected-quorum-votes="2" \
>>          no-quorum-policy="ignore" \
>>          stonith-enabled="true"
>> rsc_defaults $id="rsc-options" \
>>          resource-stickiness="5000"
>>
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>>
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>> Bugs: http://bugs.clusterlabs.org
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