Hive server availability check

hiveserver-check.sh

#!/bin/bash
STATE=`ps aux | grep "HiveServer" | wc -l`
IP="127.0.0.1"
PORT=10000
function do_restart()
{
        echo Restarting
        cd /
        nohup hive --service hiveserver &
        echo $! > /var/run/hiveserver.pid
}

# Check for TCP socket + state in ps aux
exec 6<>/dev/tcp/$IP/$PORT || do_restart
if [ $STATE != "2" ]
        then
        do_restart
fi