5 – Detailed Descriptions of Command LineToolsD000006-000 Rev A 5-13QEnvironment VariablesThe following environment variables are also used by this command:HOSTS, HOSTS_FILE - see discussion on selection of hosts above5.2.3setup_ssh(Linux): creates ssh keys and configures them on all hosts so the system canssh and scp into all other hosts without a password prompt. Typically, duringcluster setup this tool is used to enable the root user on the IB Managementnode to login to the other hosts via password-less ssh. However, if desired, thistool can also aid the setup of password-less ssh login for other user codes as well.Usage:setup_ssh [-C] [-s] [-i ipoib_suffix] [-f hostfile] [-h 'hosts'][-u user] [-S]-C - only perform connect (to enter in local hosts knownhosts). When runin this mode, -S and -s options are ignored).-s - use ssh/scp to transfer files, default is rsh/rcp.-i ipoib_suffix - suffix to apply to host names to create IPoIB hostnames. The default is '-ib'.-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 allow this user to ssh to, default iscurrent user code.-S - securely prompt for password for user on remote system.Example:setup_ssh -s -S -I""setup_ssh -Csetup_ssh -h 'arwen elrond' -CHOSTS='arwen elrond' setup_ssh -CEnvironment VariablesThe following environment variables are also used by this command:HOSTS, HOSTS_FILE - see discussion on selection of hosts above.FF_IPOIB_SUFFIX - suffix to append to hostname to create IPoIBhostname. Used in absence of -i.
