HP XC System Software Administration Guide Version 3.1

# module unload package-name
See the HP XC System Software User's Guide for more information about modulefiles.
Notes:
Installing a package in a nondefault location means that you must update the corresponding modulefile;
you might need to edit the PATH and MANPATH environment variables. Other changes are based on the
software package and its dependencies.
If you have installed a variant of the package, you might need to create a parallel modulefile specifically
for the variant. For example, you might have a standard application that you need to keep separate from
a beta version of the same application; in this case, you would set up a parallel modulefile and adjust it
accordingly.
1.10 Security
This section describes measures for maintaining the security of the HP XC system.
1.10.1 Administrator Passwords
During system installation, you assigned the following passwords:
• Root password
Used to access the superuser account, to perform system administration, and to invoke management
tools.
• Database administrator password
Used for changes to the configuration and management database.
• Console port devices password and user name
Used to communicate with the console ports of the nodes in the system: Integrated Lights Out (iLO),
MP (Management Processor), and Intelligent Platform Management Interface (IPMI).
All user names and passwords for all consoles on all nodes must be the same.
• Nagios configuration password
Used to access the Nagios system and network monitoring application.
• Switch monitor password
Used to access the Quadrics® or InfiniBand® switch monitor.
• Administrator password for ProCurve switches
Used for configuration of system administration switches. Ideally, there should be a single password
for all ProCurve switches in the system. This password was set when the hardware was prepared
before installation.
For information on changing these passwords, see “Changing Administrative Passwords” (page 152)
1.10.2 Firewall
The HP XC system maintains a firewall to block communication on unused ports. For information about
the firewall, see Chapter 11 (page 143).
1.10.3 Secure Shell (ssh)
Secure Shell (ssh) is the preferred method for accessing the HP XC system. Typically, a user accesses the
HP XC system using ssh to get a login shell or to execute commands.
The ssh service also enables file transfer using the scp or sftp commands over the same port as ssh.
The typical r* UNIX® commands (rsh, rcp, rlogin) are not on an HP XC system by default because
of their inherent insecurity. The ssh command transfers all login and password information in an encrypted
form instead of in the plain text form used by the r* UNIX telnet and ftp commands.
40 HP XC Administration Environment