Hi pacemaker group,
I am using Debian 5.0.5 Lenny, DRBD 8.3.7, Heartbeat 3.0.3 (backports),
pacemaker 1.0.9 (backports)
I have a problem with putting nodes in standby mode, or shutting down one
node :
When one node is offline or in standby (crm node standby), the other one
goes slave and DRBD gets secondary / outdated :
#crm_mon
============
Last updated: Mon Aug 30 11:50:45 2010
Stack: Heartbeat
Current DC: swmaster1 (2cd4bf30-7a63-4da7-9102-b4f49d91b9d0) - partition
with quorum
Version: 1.0.9-unknown
2 Nodes configured, unknown expected votes
2 Resources configured.
============
Online: [ swmaster1 ]
OFFLINE: [ swslave1 ]
Master/Slave Set: ms_drbd_mysql
Slaves: [ swmaster1 ]
Stopped: [ drbd_mysql:0 ]
_________________________________
SWMaster1:~# cat /proc/drbd
version: 8.3.7 (api:88/proto:86-91)
built-in
1: cs:WFConnection ro:Secondary/Unknown ds:Outdated/DUnknown C r----
ns:1104 nr:744 dw:1944 dr:67439479 al:44 bm:67 lo:0 pe:0 ua:0 ap:0 ep:1
wo:b oos:64
____________________________________________________________________________
___________
When both nodes are online, everything is ok, and I can switch resources
using 'crm resource migrate grp_mysql' :
============
Last updated: Mon Aug 30 11:57:09 2010
Stack: Heartbeat
Current DC: swmaster1 (2cd4bf30-7a63-4da7-9102-b4f49d91b9d0) - partition
with quorum
Version: 1.0.9-unknown
2 Nodes configured, unknown expected votes
2 Resources configured.
============
Online: [ swslave1 swmaster1 ]
Master/Slave Set: ms_drbd_mysql
Masters: [ swmaster1 ]
Slaves: [ swslave1 ]
Resource Group: grp_mysql
fs_mysql (ocf::heartbeat:Filesystem): Started swmaster1
mysqld (lsb:mysql): Started swmaster1
_________________________________
Reconnecting...SWMaster1:~# cat /proc/drbd
version: 8.3.7 (api:88/proto:86-91)
built-in
1: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r----
ns:1520 nr:1136 dw:2704 dr:67449610 al:50 bm:79 lo:0 pe:0 ua:0 ap:0 ep:1
wo:b oos:0
____________________________________________________________________________
___________
Instead of having an HA infrastructure, I have a LA :).
When I use DRBD manually and shutting down hearbeat (/etc/init.d/heartbeat
stop), I can stop DRBD on one side and the other node stay in update state,
so I can put it primary (drbdadm primary all).
How can I do to make understand Heartbeat/Pacemaker not to put DRBD in
Outdated state and make it putting services/resources on the other node ?
Here are my configurations :
SWMaster1:~# crm configure show
node $id="2cd4bf30-7a63-4da7-9102-b4f49d91b9d0" swmaster1 \
attributes standby="off"
node $id="e022eabd-ef7b-4049-b941-fc26d00c5cd1" swslave1 \
attributes standby="off"
primitive drbd_mysql ocf:linbit:drbd \
params drbd_resource="mysql" \
op monitor interval="15s"
primitive fs_mysql ocf:heartbeat:Filesystem \
params device="/dev/drbd/by-res/mysql" directory="/var/lib/mysql"
fstype="ext3"
primitive mysqld lsb:mysql
group grp_mysql fs_mysql 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 cli-prefer-mysqld mysqld \
rule $id="cli-prefer-rule-mysqld" inf: #uname eq swmaster1
location cli-standby-grp_mysql grp_mysql \
rule $id="cli-standby-rule-grp_mysql" -inf: #uname eq swslave1
colocation mysql_on_drbd inf: grp_mysql ms_drbd_mysql:Master
order mysql_after_drbd inf: ms_drbd_mysql:promote grp_mysql:start
property $id="cib-bootstrap-options" \
dc-version="1.0.9-unknown" \
cluster-infrastructure="Heartbeat" \
stonith-enabled="false" \
no-quorum-policy="ignore"
____________________________________________________________________________
___________
SWMaster1:~# cat /etc/ha.d/ha.cf
use_logd on
autojoin none
node SWMaster1
node SWSlave1
crm yes
compression bz2
warntime 10
deadtime 40
initdead 60
msgfmt netstring
ucast eth0 ip.serv.mas.ter
ucast eth0 ip.serv.sla.ve
____________________________________________________________________________
___________
cat /etc/drbd.conf
global {
usage-count yes;
}
common {
protocol C;
syncer {
#algorithme a utiliser et activation de la
possibilite verification de synchronisation on-line - drbdadm verify
[ressource|all]
verify-alg sha1;
#comparaison de blocs par checksum pour
verifier necessite ecriture
csums-alg sha1;
#vitesse de synchronisation - drbdsetup
/dev/drbdnum syncer -r 10M
rate 7M;
}
disk {
on-io-error detach;
}
net {
#
http://www.drbd.org/users-guide-emb/s-integrity-check.html
data-integrity-alg sha1;
after-sb-0pri discard-least-changes;
after-sb-1pri discard-secondary;
#after-sb-2pri
}
handlers {
# envoi d un mail si split-brain
split-brain
"/usr/lib/drbd/notify-split-brain.sh root";
}
}
resource mysql {
on SWMaster1 {
device /dev/drbd1;
disk /dev/md2;
address ip.serv.mas.ter:7789;
meta-disk internal;
}
on SWSlave1 {
device /dev/drbd1;
disk /dev/vda6;
address ip.serv.sla.ve:7789;
meta-disk internal;
}
}
There must be something I don't understand or I made a mistake in the
configuration.
Thanks for help,
Raphael LOUIS
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