mass_ssh

經由 ssh, 呼叫一定數量機器運行特定指令.

#!/bin/sh
#
# call other machine to exec cmd by ssh
#

# function
exec_cmd()
{
        LSUB=$1
        IPS=$2
        LCMD=$3

        CHKRNG=`echo "${IPS}" | grep "-"`

        if [ ${CHKRNG} ]; then
                OIFS=$IFS
                IFS="-"
                SIP=
                EIP=
                for A in ${IPS}
                do
                        if [ ! ${SIP} ]; then
                                SIP=${A}
                        else
                                EIP=${A}
                        fi
                done
                IFS=$OIFS

                if [[ ${SIP} -gt ${EIP} ]]; then
                        echo "Start IP : ${SIP} greater than End IP : ${EIP}"
                else
                        CIP=${SIP}
                        while [[ ${CIP} -le ${EIP} ]]
                        do
                                echo "Exec [${LCMD}] on ${LSUB}.${CIP}"
                                ssh ${LSUB}.${CIP} "$LCMD"
                                echo
                                CIP=$(($CIP + 1))
                        done
                fi
        else
                echo "Exec [${LCMD}] on ${LSUB}.${IPS}"
                ssh ${LSUB}.${IPS} "$LCMD"
                echo
        fi
}


if [[ $# -lt 3 ]]; then
        echo "Not enough parameter."
        echo "Usage : $0   "
        echo "e.g. $0 192.168.0 ls 1 3 5"
        exit -1
fi

ALLARGV=$@

if [[ -z ${ALLARGV} ]]; then
        echo "Usage : $0   "
        echo "e.g. $0 192.168.0 ls 1 3 5"
        exit -1
fi

# separate Command and Machine Numbers
SUBNET=$1
CMD=$2
shift 2

if [[ -z "$@" ]]; then
        echo "Please input "
        echo "e.g $0 192.168.0 \"ls -l\" \"1-3\""
        exit -1
fi

for A in $@
do
        exec_cmd ${SUBNET} ${A} "${CMD}"
done

exit 0