HP XC System Software Administration Guide Version 3.0

10. Connecting to a Remote Console
This chapter addresses the following topics:
• Console Management Facility (page 95)
• Accessing a Remote Console (page 95)
Console Management Facility
The Console Management Facility (CMF) daemon runs on the head node. It collects and stores console output
for all other nodes on the system. This information is stored individually for every node and is backed up
periodically. This information is stored under dated directories in the /opt/hptc/cmf/logs/cmf.dated
directory.
The console command enables you to open a console session to any node in the cluster.
Accessing a Remote Console
Accessing the system console remotely has clear advantages; among these are the ability to monitor the
system and to correct problems from a remote location. The information in this section describes how to
establish a connection with the system console and introduces the console commands.
The console port for each node in the HP XC system uses the cp- prefix. For example, the name of the
console port for the node n2 is cp-n2.
The following procedure shows how to establish a remote connection to the HP XC system console:
1. Log in to the HP XC system. In this example, penguin is the LVS alias.
# ssh -l login-name penguin login-name
@penguin's password: password
$
2. Optionally determine the machine type of the node's console with the shownode command. This
example uses n16:
# shownode config nodes n16 | grep server_type
The response may be required to establish the correct keyword to exit the node's console mode.
3. Log in to the specified node's console with the console command. This example uses n16:
$ console n16
escape character is '^]'
Trying 172.20.0.16...
Connected to n2
escape character is '^]'.
HP XC version as of date
4. Press the Enter key to obtain a prompt:
Enter
HP XC version as of date
n16 login:
5. Enter the user name and password for that node's console:
n16 login: username
passwd: password
Note
Some nodes, depending on the machine type, accept a key sequence to enter and exit their command-line
mode. See Table 10-1. to determine if these key sequences apply to your node machine type. Do not enter
the key sequence to enter command-line mode. Doing so stops the Console Management Facility (CMF) from
Console Management Facility 95