2nodes GFS + DRBD + GNBD(for Fence)
GFS + DRBD(v8) + GNBD(Server for Fence device) on Cluster (2 Nodes)
1. Kernel 및 DRBD 설치
– Kernel
# rpm -ivh kernel-2.6.9-42.0.2.EL.src.rpm
# cd /usr/src/redhat/SPECS
# rpmbuild -bp –target=x86_64 kernel-2.6.spec
# ln -s /usr/src/redhat/BUILD/kernel-2.6.9/linux-2.6.9 /usr/src/linux
– DRBD
# tar xvfz drbd-0.8.1.tar.gz -C /usr/src
# cd /usr/src/drbd-0.8.1
# make clean all
# /lib/modules/`uname -r`/build
-bash: /lib/modules/2.6.9-55.EL/build: is a directory [ 이런 메세지가 나와야 정상..]
# cd /usr/src/drbd-0.8.1
# make tools
# make install (인스톨시작)
# make install-tools
# modprobe drbd
# lsmod | grep drbd
drbd 222948 0
2. DRBD Configuration
# fdisk /dev/sdb
– /dev/sdb1 800M
– /dev/sdb2 1024M
# vi /etc/drbd.conf
resource RSC {
protocol C;
startup {
wfc-timeout 0; ## Infinite!
degr-wfc-timeout 60; ## 2 minutes.
}
disk {
on-io-error detach;
}
net {
# timeout 60;
# connect-int 10;
# ping-int 10;
# max-buffers 2048;
# max-epoch-size 2048;
allow-two-primaries;
}
syncer {
rate 60M;
# group 0;
al-extents 257;
}
on Node1 {
device /dev/drbd0;
disk /dev/sdb2;
address 210.220.224.151:7789;
meta-disk /dev/sdb1[0];
}
on Node2 {
device /dev/drbd0;
disk /dev/sdb2;
address 210.220.224.152:7789;
meta-disk /dev/sdb1[0];
}
}
//각각의 노드에서 동일하게 수행
# drbdadm -d adjust
# drbdadm create-md RSC
… yes
# drbdadm adjust RSC
# service drbd start
# drbdsetup /dev/drbd0 primary -o
3. Cluster Configuration
# service ccsd start
# service cman start
# service fenced start
# service rgmanager start
# vi /etc/init.d/cluster
———————————————————–
#!/bin/sh
. /etc/init.d/functions
case $1 in
start)
service ccsd start
service cman start
service fenced start
service gfs start
service rgmanager start
;;
stop)
service rgmanager stop
sleep 1
service gfs stop
service rgmanager stop
service fenced stop
service cman stop
service ccsd stop
;;
*)
echo $”Usage: $0 {start|stop}”
exit 1
esac
exit 0
———————————————————–
# chmod +x /etc/init.d/cluster
4. GNBD Server Configuration
# gnbd_serv -v
succeeded
# gnbd_export -v -e gnbd0 -d /dev/drbd0
gnbd_clusterd: connected
gnbd_export: created GNBD gnbd0 serving file /dev/drbd0
# modprobe gnbd
# gnbd_import -v -i Node1
gnbd_import: created directory /dev/gnbd
gnbd_import: created gnbd device gnbd0
gnbd_monitor: gnbd_monitor started. Monitoring device #0
gnbd_recvd: gnbd_recvd started
# gfs_mkfs -p lock_dlm -t new_cluster:GNBD -j 3 /dev/gnbd/gnbd0
Are you sure you want to proceed? [y/n] y
Device: /dev/gnbd/gnbd0
Blocksize: 4096
Filesystem Size: 152664
Journals: 3
Resource Groups: 8
Locking Protocol: lock_dlm
Lock Table: new_cluster:GNBD
Syncing…
All Done
// # gnbd_export -R
// # gnbd_import -R : Import된 자원부터 삭제하고나서 Export한 자원을 삭제해야 한다
