Chapter
5.
Accessing
the
cluster
from
a
remote
location
This
chapter
includes
information
about:
v
Accessing
the
cluster
from
a
remote
location
v
Accessing
each
node
before
the
operating
system
is
installed
For
more
information
about
monitoring,
remote
control,
set-up,
and
technical
references,
see:
http://www.ibm.com/servers/eserver/clusters/library/linux.html
Using
the
remote
power
command
The
command
rpower
starts
and
resets
hardware,
powers
hardware
on
and
off,
and
queries
the
node
power
state.
The
syntax
is:
rpower
-h
[
-v
]
{
-a
|
-A
|
{[
-n
node_list
I
[
-N
nodegroups
]
[
-d
device_list
]
[
-D
devicegroups
]}}
{
on
|
off
|
reboot
|
[-l]
query
|
resetsp_hcp
|
resetsp_host
|
-m
{
full
|
lpar
}
cec_on
|
cec_off
|
[
-l
]
cec_query
}
Remote
console
The
remote
console
function
uses
the
serial
ports
of
servers
and
terminal
servers.
The
serial
ports
provide
remote
access
to
nodes
before
the
operating
system
is
installed
or
when
network
access
to
the
servers
is
unavailable
or
has
failed.
Terminal
servers
must
be
included
to
enable
the
remote
console
function.
Each
rack
unit
in
the
configuration
includes
one
or
two
terminal
servers
to
connect
each
node
in
the
rack
through
a
DB9
to
RJ45
serial
cable.
The
terminal
servers
are
LAN
connected
to
the
Management
VLAN.
The
rconsole
command
accesses
the
remote
console.
This
command
opens
a
remote
console
session
for
any
cluster
node.
The
syntax
is:
rconsole
[
-h
]
[
-x
]
[
-a
I
-A
|
{[
-n
node_list
]
[
-N
nodegroups
]
[
-d
device_list
]
[
-D
devicegroups
]}]
[
-t
]
[
-o
]
|
-O
number
of
columns]]
[-c
[-v]
|
[
-r
|
-f
]]
Displaying
node
configuration
information
CSM
maintains
a
database
of
configuration
information
(tab
files)
about
the
nodes
that
are
configured
in
the
Cluster
1350.
To
display
the
node
configuration
information
before
installing
LCIT
software,
at
the
console
prompt,
type:
Isnode
-l
The
output
provides
information
about
each
node,
such
as
the
node
type,
model
number,
serial
number,
and
host
name.
The
tab
file
output
also
provides
information
that
corresponds
each
node
to
its
terminal
server
network
and
service
processor
network.
For
the
terminal
server
network,
the
output
includes
the
console
server
host
name
and
the
console
port
number
to
which
the
node
is
©
Copyright
IBM
Corp.
2007
27
Summary of Contents for System Cluster 1350
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