118
Chapter 10. Using the Fencing System
Caution
Red Hat GFS does not support the following Vixel firmware: Vixel 7xxx series firmware versions 4.0
or later, Vixel 9xxx series firmware versions 6.0 or later.
10.2.5. HP RILOE Card
A GFS node that has an HP RILOE (Remote Insight Lights-Out Edition) card can be fenced
with the
fence_rib
fencing agent. Refer to Section 6.6
Creating the
fence.ccs
File
and
Section 6.7
Creating the
nodes.ccs
File
for information on how to configure with this type of
fencing.
Note
The
fence_rib
fencing agent requires the
Stunnel
software be installed on the system running the
fencing agent.
Stunnel
is required to connect to the HP RILOE card.
10.2.6. GNBD
Nodes that only use GFS with storage devices via GNBD (Global Network Block Device) servers
can use the
fence_gnbd
agent. The agent requires no special hardware. The
fence_gnbd
fencing
agent instructs all GNBD servers to disallow all I/O from a fenced node. When a fenced node is reset
and re-imports the GNBD devices, the GNBD servers again allow the node access to the devices.
Refer to Section 6.6
Creating the
fence.ccs
File
and Section 6.7
Creating the
nodes.ccs
File
for
information on how to configure with this type of fencing.
Note
You
must not
specify the GNBD fencing agent (
fence_gnbd
) as a fencing device for GNBD server
nodes (nodes that export GNBDs to GFS nodes).
10.2.7. Manual
In the absence of fencing hardware, a manual fencing method can be used for testing or evaluation
purposes.
Warning
Manual fencing should not be used in a production environment. Manual fencing depends on human
intervention whenever a node needs recovery. Cluster operation is halted during the intervention.
The manual fencing agent,
fence_manual
, writes a message into the system log of the node on
which the fencing agent is running. The message indicates the cluster node that requires fencing.
Содержание GFS 6.0 -
Страница 1: ...Red Hat GFS 6 0 Administrator s Guide...
Страница 8: ......
Страница 88: ...74 Chapter 6 Creating the Cluster Configuration System Files...
Страница 98: ...84 Chapter 7 Using the Cluster Configuration System...
Страница 102: ...88 Chapter 8 Using Clustering and Locking Systems...
Страница 128: ...114 Chapter 9 Managing GFS...
Страница 134: ...120 Chapter 10 Using the Fencing System...
Страница 144: ...130 Chapter 12 Using GFS init d Scripts...
Страница 148: ...134 Appendix A Using Red Hat GFS with Red Hat Cluster Suite...
Страница 184: ...170 Appendix C Basic GFS Examples...
Страница 190: ......