Maintenance script

[yigald]

Hi

I hope I'm addressing the right forum.

I wrote a little shell script the checks if the shoutcast process is up and running, if it is not it kills what there is (if any) and restart. I'm running it in cron every minute

That is the restart script

#!/bin/bash
cd <full path to your script folder>
a=`ps -x | grep -i sc_ | grep -v grep`
x1=`echo $a | awk '{print $1}'`
x2=`echo $a | awk '{print $12}'`
kill -9 $x1
kill -9 $x2
echo "killing PID $x1 $x2"
echo "killing PID ends successfully, loading radio...."
screen -A -m -d -S radio ./<your shoutcast script name>

And that is the watchdog script

#!/bin/bash
clear
echo --------------------------------------------------------
echo
echo Current date is `date`
echo --------------------------------------------------------

##############################################################################
# Creating Variable for the watchdog script and writing to a file #
##############################################################################

wdpid=`ps -ef | grep -i radio_watchdog.sh | grep -v grep | grep -v ps | awk '{print $1}' | uniq `
echo
rm <full path>/watchdog*pid
echo $wdpid > <full path>/watchdog.$wdpid.pid
echo
echo pid of watchdog is $wdpid
touch radio_watchdog.sh
echo
##############################################################################
# checking if pid is exist for radio script #
##############################################################################


radio_proc=`ps -x | grep -i screen | grep -v grep | awk '{print $1}' `
if [ -z "$radio_proc" ]
then # $radio_proc is empty
if [ ${radio_proc+EMPTY} = EMPTY ]
then echo "radio_proc is empty, but set"
<full path>/radio_restart.sh
#<full path>/test.sh
else echo "radio_proc is not set"
fi
else # radio_proc contains value
echo "radio is running, radio pid is $radio_proc"
fi
echo
echo
echo
echo --------------------------------------------------------
cp <full path>/radio_watchdog.log <full path>/radio_watchdog.txt
echo
echo
echo
echo Log fils size (KB) and name >> <path to web site>/public_html/radio_watchdog.txt
echo ----------------------------- >> <path to web site>/public_html/radio_watchdog.txt
ls -lh *sc*.log* | awk '{print $5,$9 }' >> <path to web site>/public_html/radio_watchdog.txt

[fc*uk]

hey, this is both more efficient and more informative than the scripts that I use. Beautifully simple too.

Cheers and thanks for sharing. I'll make sure I reference this to everyone who comes asking from now on!

[yigald]

Radio-watchdog V1.4
---------------------
Code optimization and a little more

This script is running under cron every one minute which makes sure your stream (as long as there is a source) will be down only for one minute at the most

Here is the code:
[PHP]
#!/bin/bash

##############################################################################
# This script was written by Yigal Dekel (yigald@gmail.com) and can be used #
# freely as long as it is copied/used/implemented as it is. #
# Radio watchdog 1.4 #
##############################################################################

##############################################################################
# Creating General Variables #
##############################################################################
active_dir=radio/current

#file var will be used as a buffer
wd_log="radio_watchdog.txt"
web=$HOME/public_html/watchdog.log

#End of user config
#Starting to write to buffer
file="$file\n"
file="$file\n--------------------------------------------------------"
file="$file\nCurrent date is `date |awk '{print $1,$2,$3,$4}' `"
file="$file\n--------------------------------------------------------"
file="$file\nServer uptime is `uptime |awk '{print $3,$4}' `"
file="$file\n--------------------------------------------------------"

##############################################################################
# Creating Variable for the watchdog script and writing it to a file #
##############################################################################

wdpid=`ps -ef | grep -i radio_watchdog | grep -v grep | grep -v ps | awk '{print $1}' | uniq `
file="$file\n"

rm $HOME/$active_dir/watchdog*pid

echo $wdpid > $HOME/$active_dir/watchdog.$wdpid.pid
file="$file\n"

file="$file\npid of watchdog is $wdpid"
touch $HOME/$active_dir/radio_watchdog.sh
file="$file\n"


##############################################################################
# checking if pid is exist for radio script #
##############################################################################


radio_proc=`ps -x | grep -i screen | grep -v grep | awk '{print $1}' `
if [ -z "$radio_proc" ]
then # $radio_proc is empty
if [ ${radio_proc+EMPTY} = EMPTY ]
then file="$file\nradio_proc is empty, but set"
cat $HOME/$active_dir/sc_w3c.log2 > $HOME/$active_dir/sc