CentOS 5 GFS Install

I have decided to include the steps I felt I needed to take to make a test install of GFS before I decided not to use it. It doesn't cover clvm configuration but it's very similar to LVM2 which is well documented on the net so I decided not to include it here.

#NTP is needed on every node in the cluster sync'd to the same place of course
yum -y install ntp
#Needed for gfs clustering
yum -y groupinstall Clustering
#GFS kernel module and FS utils
yum -y install gfs-kmod
yum -y install gfs-utils

#Needed to get the stupid system-config-cluster running for configuration of the cluster
yum -y install xorg-x11-xauth xorg-x11-fonts-base xorg-x11-fonts-Type1

#NTP is needed on every node in the cluster sync'd to the same place of course
chkconfig ntpd on
service ntpd start

#Stop updatedb trawling our gfs mounts
echo 'PRUNEFS = "auto afs iso9660 sfs udf"
PRUNEPATHS = "/afs /media /net /sfs /tmp /udev /var/spool/cups /var/spool/squid /var/tmp /cvp /mnt/cvp /media"' > /etc/updatedb.conf

# Create the filesystem with 125 journals(nodes) clustername coull and fs name cvp on /dev/hdb
gfs_mkfs -p lock_dlm -t coull:cvp -j 125 /dev/hdb

#config /etc/cluster/cluster.conf using system-config-cluster by throwing the x connection back to your machine via SSH

#add cluster hosts to /etc/hosts not DNS as this introduces a point of failure and some slowdown.

#Start clustering and GFS services
service cman start
service clvmd start
service gfs start

#Mount SAN device which should be a clv (centralised logical volume)
mount -t gfs /dev/san1/lvol0 /san -o noatime

# Memcache anyone?  Not sure what the options are for yet as I've never set it up before
/usr/bin/memcached -d -m 512 -l 192.168.2.100 -p 11211 -u nobody