ping_check.sh

#!/bin/bash
DATE="$(date '+%Y.%m.%d, %I:%M:%Ss')"

# Interface
INET_NAME="eth0"

PING_CHECK_STATE="/opt/scripts/ping.state"
PING_CHECK_REBOOT_LOG="/var/log/ping_check_reboot.log"
PING_CHECK_SUCESS_LOG="/var/log/ping_check_sucess.log"

PING="$(which ping)"
PING_TARGET="8.8.8.8"
PING_OPTS="-c 1 -i 1"
PING_CHECK_A="$(cat ${PING_CHECK_STATE} | grep 'icmp_seq=1' | awk '{ printf $5 "\n" }')"
PING_CHECK_B="icmp_seq=1"


function f_ping {
  # ping -I eth0 -c 1 -i 1 8.8.8.8 > /tmp/ping.log
  $PING $PING_OPTS $PING_TARGET > $PING_CHECK_STATE
}

function f_check {
  if [ "$PING_CHECK_A" == "$PING_CHECK_B" ]; then
      echo "[$DATE] Uplink is OK" > $PING_CHECK_SUCESS_LOG

  else
      echo "[$DATE] Uplink is DOWN" >> $PING_CHECK_REBOOT_LOG
      sleep 5
      /opt/scripts/vtrunk_init.sh
  fi
}

# Main
f_ping
f_check