Internet connection checker

Материал из RSU WiKi

Scripts checks connection to the internet through http-proxy.

Both of them should be placed to cronjob with different times - first with smth about 5 minutes & the second as you wish - it only sends mail regularly.

#!/bin/bash

# Tmp files dir
DIR="/var/tmp/watchdog/"
PSAT="proxy_ip:3128"

echo "WatchDog running..."
/usr/bin/curl -m 10 -x $PSAT http://www.google.com/index.html > $DIR.google 2>/dev/null
# Check - if file exists & its size is >0
if [ -s $DIR.google ]; then
 stx=1
 rm -f $DIR.spt_is_down
else
 /usr/bin/curl -m 10 -x $PSAT http://www.ya.ru/index.html > $DIR.ya 2>/dev/null
 if [ -s $DIR.ya ]; then
  stx=1
  rm -f $DIR.spt_is_down
 else
  /usr/bin/curl -m 10 -x $PSAT http://www.r0.ru/index.html > $DIR.r0 2>/dev/null
  if [ -s $DIR.r0 ]; then
   stx=1
   rm -f $DIR.spt_is_down
  else
   stx=0
   echo "Fail!"
   date >> /var/log/watchdog/proxy_watchdog.log
   echo "Proxy server is down!" >> /var/log/watchdog/proxy_watchdog.log
   echo `date` > $DIR.spt_is_down
   echo ""
  fi;
 fi;
fi;

#!/bin/bash

# Tmp files dir
DIR="/var/tmp/watchdog/"
ADDR="noc@example.com"

echo "Checking proxy fail..."
if [ -s $DIR.spt_is_down ]; then
 stx=1
 echo "Proxy fail detected! Sending message to admins:"
 echo "Proxy fail detected: `cat /var/tmp/watchodg/proxy_is_down`" | mailto -s "Proxy fail detected!" $ADDR
 echo "Done!"
else
 stx=0
 echo "Proxy looks fine, hooray!"
fi;