Product specifications

5 – Detailed Descriptions of Command LineTools
Basic Setup and Administration Tools
5-12 D000006-000 Rev A
Q
Example:
pingall
pingall -h 'arwen elrond'
HOSTS='arwen elrond' pingall
pingall -C
pingall -C -H 'chassis1 chassis2'
CHASSIS='chassis1 chassis2' pingall -C
Environment Variables:
The following environment variables are also used by this command:
HOSTS, HOSTS_FILE - see discussion on selection of hosts above
CHASSIS, CHASSIS_FILE - see discussion on selection of chassis above
FF_MAX_PARALLEL - when -p option is used maximum number of parallel
operations to perform at once.
5.2.2
check_rsh
(Linux) Verifies that rsh is set up to allow passwordless file copies (RCP) and
commands (rsh) to be run from this host to all the other hosts (and to itself via
localhost) as a specific user (default is root). Additionally, this command
can be used to verify rsh is setup to allow MPI to use rsh for job startup.
NOTE: For security reasons, configuration and use of rsh/rcp/rlogin is no
longer recommended. Instead ssh is recommended. SSH may be used
by MPI as well as setup_ssh.
Usage:
check_rsh [-i ipoib_suffix] [-f hostfile] [-h 'hosts'] [-u user]
-i 'ipoib_suffix '- suffix to apply to host names to create IPoIB host
names. The default is '-ib'. Use -i '' to indicate no suffix.
-h hosts - list of hosts to setup
-f hostfile - file with hosts in cluster, default is
/etc/sysconfig/iba/hosts
-u user - user on remote system to verify this user can rsh to. The default
is current user code.
Example:
check_rsh
check_rsh -h 'arwen elrond'
HOSTS='arwen elrond' check_rsh