my first post on this list; will be quite a long one :)
environment:
OS: RHEL 5.4 x86_64
drbd83.x86_64 8.3.2-6.el5_3
kmod-drbd83.x86_64 8.3.2-6.el5_3
openais.x86_64 0.80.6-8.el5_4.1
heartbeat.x86_64 3.0.0-33.2
resource-agents.x86_64 1.0-31.4
pacemaker.x86_64 1.0.5-4.1
pacemaker-libs.x86_64 1.0.5-4.1
i would like to mention that i first successfully implemented a 2 node
active-passive setup with pacemaker with help from the drbd-users-guide.
my next try was the three node setup (one backup-server outside of the HA
cluster)
it is up-and-running when i doing it 'by hand' !
my problems start with the configuration of pacemaker, here i' m lost.
i defined the primitive resources, master-slave (without complains of
crm/configure/ptest)
after colocation + ordering, ptest complains:
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crm(live)configure# ptest
ptest[15059]: 2009/10/16_11:27:17 WARN: native_color: Resource res.ip.mysql
cannot run anywhere
ptest[15059]: 2009/10/16_11:27:17 WARN: native_color: Resource
res.drbd.mysqlstack:0 cannot run anywhere
-------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------
crm(live)configure# show
node mysqlHA1.cologne.tecdoc.local
node mysqlHA2.cologne.tecdoc.local
primitive res.drbd.mysqldb ocf:linbit:drbd \
params drbd_resource="mysqldb"
primitive res.drbd.mysqlstack ocf:linbit:drbd \
params drbd_resource="mysqlstack"
primitive res.ip.mysql ocf:heartbeat:IPaddr2 \
params ip="172.30.2.10" nic="eth0" \
op monitor interval="2s" timeout="0.5s"
ms ms.drbd.mysqldb res.drbd.mysqldb \
meta master-max="1" master-node-max="1" clone-max="2"
clone-node-max="1" notify="true" globally_unique="false"
ms ms.drbd.mysqlstack res.drbd.mysqlstack \
meta master-max="1" master-node-max="1" clone-max="1"
clone-node-max="1" notify="true" globally_unique="false"
colocation co.ms.drbd.mysqlstack_on_ms.drbd.mysqldb inf: ms.drbd.mysqlstack
ms.drbd.mysqldb:Master
colocation co.ms.drbd.mysqlstack_on_res.ip.mysql inf: ms.drbd.mysqlstack
res.ip.mysql
colocation co.res.ip.mysql_on_ms.drbd.mysqldb_master inf: res.ip.mysql
ms.drbd.mysqldb:Master
order o.ip.mysql_before_ms.drbd.mysqlstack inf: res.ip.mysql
ms.drbd.mysqlstack:start
order o.ms.drbd.mysqldb_before_ms.drbd.mysqlstack inf: ms.drbd.mysqldb:promote
ms.drbd.mysqlstack:start
property $id="cib-bootstrap-options" \
stonith-enabled="false"
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i have no idea why the cluster-ip cannot be run anywhere (and of course prevent
res.drbd.mysqlstack from starting)
if you're interested, my /etc/drbd.conf:
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global {
usage-count no;
}
common {
syncer {
rate 10M;
verify-alg sha1;
}
protocol C;
}
resource mysqldb {
handlers {
fence-peer "/usr/lib/drbd/crm-fence-peer.sh";
after-resync-target "/usr/lib/drbd/crm-unfence-peer.sh";
split-brain "/usr/lib/drbd/notify-split-brain.sh root";
}
startup {
degr-wfc-timeout 60; # 1 minute
outdated-wfc-timeout 2; # 2 seconds.
}
disk {
on-io-error detach;
}
net {
cram-hmac-alg "sha1";
shared-secret "secret";
after-sb-0pri disconnect;
after-sb-1pri disconnect;
after-sb-2pri disconnect;
rr-conflict disconnect;
}
syncer {
rate 20M;
al-extents 257;
}
device /dev/drbd0;
disk /dev/sdb;
meta-disk internal;
on mysqlHA1.cologne.tecdoc.local {
address 10.6.0.127:7788;
}
on mysqlHA2.cologne.tecdoc.local {
address 10.6.0.128:7788;
}
}
resource mysqlstack {
protocol A;
device /dev/drbd10;
stacked-on-top-of mysqldb {
address 172.30.2.10:7789; # Cluster IP
}
on mysqlHAoffsite.cologne.tecdoc.local {
disk /dev/sdb;
address 172.30.2.78:7789; # public IP of backup-node
meta-disk internal;
}
}
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Mit freundlichen Grüßen / with kind regards
Torsten Schmidt
System Manager
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