Hello,
first of all I want to say hello all recipients of the pacemaker mailinglist!
I manage a two node active-passive cluster with an ms-drbd-resource and a
depending resource.
Each node is located in a separate datacenter, connected by a single
dwdm-connection, a second network connection is not available.
In case of a network interuption between the datacenters a split brain
situation is created and a manual intervention of the admin is needed.
What are your recommendations for me to avoid the split brain situation?
Thanks in advance!
Best regards,
Stefan
Following the configuration:
node lxds05 \
attributes standby="off"
node lxds07 \
attributes standby="off"
primitive apache2 ocf:heartbeat:apache \
params configfile="/etc/apache2/apache2.conf"
httpd="/usr/sbin/apache2" \
operations $id="apache2-operations" \
op start interval="0" timeout="240" \
op stop interval="0" timeout="240" \
op monitor interval="15" timeout="20" start-delay="0" \
meta target-role="started" failure-timeout="60"
primitive omd_site_main ocf:omd:omdnagios \
params site="main" \
op monitor interval="30s" timeout="30s" \
op start interval="0s" timeout="240s" \
op stop interval="0s" timeout="240s" \
meta target-role="Started" failure-timeout="60"
primitive pri_drbd_omd ocf:linbit:drbd \
params drbd_resource="nagios" \
operations $id="drbd_disk-operations" \
op monitor interval="10" timeout="240" \
meta failure-timeout="60"
primitive pri_fs_omd ocf:heartbeat:Filesystem \
params device="/dev/drbd0" directory="/opt/omd/" fstype="ext4" \
operations $id="pri_fs_omd-operations" \
op start interval="0" timeout="240" \
op stop interval="0" timeout="360" \
op monitor interval="15" timeout="20" start-delay="0" \
op notify interval="0" timeout="20" \
meta target-role="started" failure-timeout="60"
primitive pri_nagiosIP ocf:heartbeat:IPaddr2 \
params ip="192.168.12.21" cidr_netmask="24" iflabel="NagiosIP" \
operations $id="pri_nagiosIP-operations" \
op start interval="0" timeout="20" \
op stop interval="0" timeout="20" \
op monitor interval="10" timeout="20" start-delay="0" \
meta target-role="started" failure-timeout="60"
primitive res_MailTo_1 ocf:heartbeat:MailTo \
params email="stefan.senftle...@itsc.de" subject="nagios-group" \
operations $id="res_MailTo_1-operations" \
op start interval="0" timeout="10" \
op stop interval="0" timeout="10" \
op monitor interval="10" timeout="10" start-delay="0" \
meta failure-timeout="60"
primitive res_MailTo_2 ocf:heartbeat:MailTo \
params email="stefan.senftle...@itsc.de" subject="omd_site_main" \
operations $id="res_MailTo_2-operations" \
op start interval="0" timeout="10" \
op stop interval="0" timeout="10" \
op monitor interval="10" timeout="10" start-delay="0" \
meta failure-timeout="60"
primitive res_ping_1 ocf:pacemaker:ping \
params multiplier="1000" host_list="192.168.12.1 192.168.12.2
192.168.12.13" \
operations $id="res_ping_1-operations" \
op start interval="0" timeout="60" \
op stop interval="0" timeout="20" \
op monitor interval="10" timeout="60" start-delay="0" \
op reload interval="0" timeout="100"
group nagios-group pri_fs_omd pri_nagiosIP apache2 \
meta target-role="started" failure-timeout="60"
ms ms_drbd_omd pri_drbd_omd \
meta clone-max="2" notify="true"
clone cl_ping_1 res_ping_1 \
meta clone-max="2" notify="true"
location loc_drbdmaster_ping ms_drbd_omd \
rule $id="loc_drbdmaster_ping-rule" $role="Master" pingd: defined
pingd
colocation col_omd_follows_drbd inf: nagios-group ms_drbd_omd:Master
colocation col_omd_site_main_nagios-group inf: omd_site_main nagios-group
colocation col_res_MailTo_1_nagios-group inf: res_MailTo_1 nagios-group
colocation col_res_MailTo_2_omd_site_main inf: res_MailTo_2 omd_site_main
order ord_drbd_before_omd inf: ms_drbd_omd:promote nagios-group:start
order ord_nagios-group_omd_site_main inf: nagios-group omd_site_main
order ord_nagios-group_res_MailTo_1 inf: nagios-group res_MailTo_1
order ord_omd_site_main_res_MailTo_2 inf: omd_site_main res_MailTo_2
property $id="cib-bootstrap-options" \
expected-quorum-votes="2" \
stonith-enabled="false" \
dc-version="1.0.8-042548a451fce8400660f6031f4da6f0223dd5dd" \
no-quorum-policy="ignore" \
cluster-infrastructure="openais" \
last-lrm-refresh="1320683212"
rsc_defaults $id="rsc-options" \
resource-stickiness="100"
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