Red Hat GFS 5.2.1 -, Administrator'S Manual

Page: 63 / 192

Chapter 6. Creating the Cluster Configuration System Files 49
Parameter Description
LoginPassword
The password for logging in to a power switch, an FC switch, or
a RILOE card.
multipath Selects GNBD multipath style fencing.
CAUTION: When multipath style fencing is used, if the
kgnbd_portd
process of a GNBD server node cannot be
contacted, it is fenced as well, using its specified fencing method.
That means that when a GNBD client (GFS node) is fenced, any
node listed as its GNBD server that does not have the
gnbd_serv
module loaded (which starts
kgnbd_portd
) is also
fenced.
Number
The number of times to retry connecting to the GNBD server
after a failed attempt, before the server is fenced. The parameter
entry is for the
retrys =
entry and is only valid when used with
multipath style fencing. (Refer to the multipath entry in this
table.) The default value of
Number
is 3.
Seconds
The length of time, in seconds, to wait between retries. This
parameter entry is for the
wait_time =
entry and is only valid
when used with multipath style fencing. (Refer to the multipath
entry in this table.) The default value of
Seconds
is 2.
ServerName
The host name of a GNBD server. Each GNBD server is
represented with a "
server =
" line in the
fence.ccs
file. For
example, if you have three GNBD servers, then the
fence.ccs
file needs three "
server =
" lines one for each GNBD server.
Table 6-2. File Syntax Description: Variables for
fence.ccs
fence_devices {
apc1 {
agent = "fence_apc"
ipaddr = "10.0.3.3"
login = "apc"
passwd = "apc"
}
apc2 {
agent = "fence_apc"
ipaddr = "10.0.3.4"
login = "apc"
passwd = "apc"
}
}
Example 6-3. APC MasterSwitch Fencing Devices Named
apc1
and
apc2