Red Hat GFS 5.2.1 -, Руководство администратора

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Chapter 6. Creating the Cluster Configuration System Files 53
Refer to Chapter 10 Using the Fencing System for basic fencing details, descriptions of how fencing
is used, and descriptions of available fencing methods.
To create the
nodes.ccs
file, follow these steps:
1. Create a file named
nodes.ccs
.
a. If you are configuring a node for one fencing method (not cascaded), specify only one
fencing method per node in the
nodes.ccs
file. If the node is a GNBD server node
(for use with GNBD multipath), an additional fencing device that uses fencing agent
fence_notify_gnbd
needs to be included as the last fencing device for the fencing
method. Use a file format according to the fencing method as follows. In addition, refer
to Figure 6-19 for the file format to be used if the node is a GNBD server node. Refer to
Table 6-3 for syntax description.
•
APC MasterSwitch — For a node with a single power supply, refer to Figure 6-11. For
a node with dual power supplies, refer to Figure 6-12.
•
WTI NPS — Refer to Figure 6-13.
•
Brocade or Vixel FC switch — Refer to Figure 6-14.
•
GNBD — Refer to Figure 6-15.
•
HP RILOE — Refer to Figure 6-16.
•
Manual — Refer to Figure 6-17.
b. If you are configuring a node for cascaded fencing, use the file format in Figure 6-18.
Refer to Table 6-3 for syntax description.
Note
Figure 6-18 and Figure 6-19 do not show device-specific parameters for fencing meth-
ods. To determine device-specific parameters, see the appropriate figures listed in Step
1, part a.
2. For each node, specify
NodeName
,
IFName
, and the IP address of the node name,
IPAddress
.
Note
Make sure that you specify
Nodename
as the Linux hostname and that the primary IP address
of the node is associated with the hostname. Specifying
NodeName
other than the Linux host-
name (for example the interface name) can cause unpredictable results — especially if the
node is connected to multiple networks. To determine the hostname of a node, use the
uname
-n
command on the node. To verify the IP address associated with the hostname, issue a
ping
command to the hostname.
3. For each node, specify the fencing parameters according to the fencing method you are using,
as follows:
a. If using APC MasterSwitch fencing, specify
MethodName
,
DeviceName
,
PortNumber
, and
SwitchNumber
. If you are configuring for dual power supplies,
specify the following parameters for the second fencing device:
DeviceName
,
PortNumber
, and
SwitchNumber
. Refer to Example 6-12 for a
nodes.ccs
file that