Red Hat GFS 6.0 -, Administrator'S Manual

Page: 165 / 192

Appendix C. Basic GFS Examples 151
Note
This step must be performed every time a node is rebooted. If it is not, the pool devices will not
be accessible.
Activate the pools using the
pool_assemble -a
command for each node as follows:
n01#
pool_assemble -a
<--
Activate pools
alpha_cca assembled
pool_gfs01 assembled
pool_gfs02 assembled
n02#
pool_assemble -a
<--
Activate pools
alpha_cca assembled
pool_gfs01 assembled
pool_gfs02 assembled
n03#
pool_assemble -a
<--
Activate pools
alpha_cca assembled
pool_gfs01 assembled
pool_gfs02 assembled
5. Create CCS files.
a. Create a directory called
/root/alpha
on node
n01
as follows:
n01#
mkdir /root/alpha
n01#
cd /root/alpha
b. Create the
cluster.ccs
file. This file contains the name of the cluster and the name of
the nodes where the LOCK_GULM server is run. The file should look like the following:
cluster {
name = "alpha"
lock_gulm {
servers = ["n01"]
}
}
c. Create the
nodes.ccs
file. This file contains the name of each node, its IP address, and
node-specific I/O fencing parameters. The file should look like the following:
nodes {
n01 {
ip_interfaces {
eth0 = "10.0.1.1"
}
fence {
power {
apc {
port = 1
}
}
}
}
n02 {
ip_interfaces {
eth0 = "10.0.1.2"
}
fence {
power {
apc {
port = 2
}
}