This is a short script to monitor an allstar node and will restart if for some reason asterisk crashes.

allstar_watchdog.sh

#!/bin/bash -x
# Thanks for justin campbell for his original code.

DIR=/tmp/watchdog

#replace this with your node number
NODE=41787

# Create dir if it doesn't exist
if [ ! -d $DIR ]; then
  mkdir $DIR
fi

cd $DIR

# Save current registration times
/usr/sbin/asterisk -rx "iax2 show registry" | grep $NODE | cut -b 74- > current

# If previous exists, compare current to previous
if [ -f previous ]; then
  cmp current previous

# If they match, restart Asterisk
  if [ $? == 0 ]; then
    /etc/init.d/asterisk restart
  fi
fi

# delete the previous file
rm -f previous
mv current previous
 

allstar_watchdog_installer.sh

# Add allstar_watchdog.sh to cron, make sure you create the watchdog script in the /etc/asterisk/folder
if ! grep -q "0,10,20,30,40,50 * * * *  /etc/asterisk/allstar_watchdog.sh"  /var/spool/cron/root; then
        echo "0,10,20,30,40,50 * * * *  /etc/asterisk/allstar_watchdog.sh">>/var/spool/cron/root
fi

Before using this, make sure you have entries that appear when you execute "iax2 show registry" and that your node will show up. Otherwise, your server will keep rebooting.