whiptail-在多个服务器上执行命令

Question

我想问一下如何在多台服务器上执行命令？

if [ $exitstatus = 0 ]; then
        echo "User selected Ok"
serv=`hostname`
        for SERVER in $(cat $PWD/$ADD_KEY); do
        ssh -t -o StrictHostKeyChecking=no root@$SERVER <<'EOF'
cca=`cat $RDIR | grep $keyy`
if [[ "$cca" == "$keyy" ]]; then
echo "OK"
else
echo "NOK"
fi
EOF

#"hostname && cat $RDIR | grep $keyy " << 'EOF'

#EOF
        done >> temp.txt
fi

我尝试使用：

        for SERVER in $(cat $PWD/$ADD_KEY); do
        ssh -t -o StrictHostKeyChecking=no root@$SERVER '
cca=`cat $RDIR | grep $keyy`
if [[ "$cca" == "$keyy" ]]; then
echo "OK"
else
echo "NOK"
fi
'

没有工作，三天后我试图弄清楚怎么做，请帮助我