Red Hat GFS 6.0 -, Administrator'S Manual

Page: 69 / 192

Chapter 6. Creating the Cluster Configuration System Files 55
nodes {
NodeName
{
.
.
.
}
NodeName {
ip_interfaces {
IFNAME
= "
IPAddress
"
}
fence {
MethodName
{
DeviceName {
port = PortNumber
switch
=
SwitchNumber
option = "off"
}
DeviceName {
port =
PortNumber
switch
=
SwitchNumber
option = "off"
}
DeviceName
{
port = PortNumber
switch
=
SwitchNumber
option = "on"
}
DeviceName {
port =
PortNumber
switch
=
SwitchNumber
option = "on"
}
}
}
}
NodeName {
.
.
.
}
}
File format for node
identification (same
format for all nodes)
File format for APC
MasterSwitch
fencing method, for
node with dual
power supplies
Fencing a node with
dual power supplies
requires that both
power supplies be
powered off before
rebooting the node.
To accomplish that,
the
nodes.ccs file
requires the use of
the
option =
parameter: first, set
to
"off
" for for the
fencing device of
each power supply,
then set to
"on" for
the fencing device
of each power
supply.
Fencing device
for pwr supply 1
Fencing device
for pwr supply 1
Fencing device
for pwr supply 2
Fencing device
for pwr supply 2
Power down
pwr supply 1
Power down
pwr supply 2
Power up
pwr supply 1
Power up
pwr supply 2
Figure 6-14. File Format:
nodes.ccs
, APC Single Fencing Method, Dual Power Supply