[DRBD-user] DRBD + RHCS - Failover not working

James Perry jperry at mezeo.com
Wed Dec 9 02:02:37 CET 2009

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Hi All,

I have a working 2 node RHCS + DRBD (ext3 filesystem replication) instance up and running.  I can relocate the service just fine but when I fail the service (kill a process or power off the VM), the service fails to relocate to the other node.  Please help!!!!  Does ANYONE have a working example of a Postgres HA Cluster?


Here's the error I'm getting... It appears that DRBD is failing but I can't tell why.

Dec  7 14:34:49 rhcsnode1 clurgmgrd[8024]: <notice> Service service:mezeo_ha_db started
Dec  7 14:36:36 rhcsnode1 clurgmgrd: [8024]: <err> script:pgsql_svc: status of /etc/rc.d/init.d/postgresql failed (returned 1)
Dec  7 14:36:36 rhcsnode1 clurgmgrd[8024]: <notice> status on script "pgsql_svc" returned 1 (generic error)
Dec  7 14:36:36 rhcsnode1 clurgmgrd[8024]: <notice> Stopping service service:mezeo_ha_db
Dec  7 14:36:37 rhcsnode1 clurgmgrd: [8024]: <err> script:pgsql_svc: stop of /etc/rc.d/init.d/postgresql failed (returned 1)
Dec  7 14:36:37 rhcsnode1 clurgmgrd[8024]: <notice> stop on script "pgsql_svc" returned 1 (generic error)
Dec  7 14:36:37 rhcsnode1 avahi-daemon[2800]: Withdrawing address record for on eth0.
Dec  7 14:36:47 rhcsnode1 kernel: block drbd0: role( Primary -> Secondary )
Dec  7 14:36:47 rhcsnode1 clurgmgrd[8024]: <crit> #12: RG service:mezeo_ha_db failed to stop; intervention required
Dec  7 14:36:47 rhcsnode1 clurgmgrd[8024]: <notice> Service service:mezeo_ha_db is failed

Here's my config:
<?xml version="1.0"?>
<cluster alias="pgsql_cluster" config_version="70" name="pgsql_cluster">
        <fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/>
                <clusternode name="rhcsnode1.localdomain" nodeid="1" votes="1">
                <clusternode name="rhcsnode2.localdomain" nodeid="2" votes="1">
        <cman expected_votes="1" two_node="1"/>
                        <failoverdomain name="fo_domain" nofailback="0" ordered="0" restricted="0">
                                <failoverdomainnode name="rhcsnode1.localdomain" priority="1"/>
                                <failoverdomainnode name="rhcsnode2.localdomain" priority="1"/>
                        <ip address="" monitor_link="1"/>
                        <postgres-8 config_file="/var/lib/pgsql/data/postgresql.conf" name="pgsql_db" postmaster_user="postgres" shutdown_wait="10"/>
                        <fs device="/dev/drbd/by-res/drbd_disk" fstype="ext3" mountpoint="/var/lib/pgsql/data" name="fs_pgsql" options="noatime"/>
                        <script file="/etc/rc.d/init.d/postgresql" name="pgsql_svc"/>
                        <drbd name="res_drbd" resource="drbd_disk"/>
                <service autostart="1" domain="fo_domain" exclusive="0" name="mezeo_ha_db" recovery="relocate">
<drbd ref="res_drbd">
        <fs ref="fs_pgsql"/>
        <ip ref=""/>
        <script ref="pgsql_svc"/>

James Perry
Principal Consultant
Mezeo Software
t: 713.244.0859
f: 713.244.0851
m: 713.444.0251

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