Qlogic Fast Fabric, User Manual

Page: 66 / 174

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