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check_net/check_net.sh

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#!/usr/bin/env bash
## -------------------------------------------------------------------
## --- All Configurations ill be done in /etc/check_net/check_net.conf
## -------------------------------------------------------------------
## - Load Configuration
## -
source /etc/check_net/check_net.conf
## ------------------
## --- Some functions
## ------------------
## - Check if a given array (parameter 2) contains a given string (parameter 1)
## -
fatal(){
echo ""
echo -e "[ \033[31m\033[1mError\033[m ]: $*"
echo ""
echo -e "\t\033[31m\033[1mScript is canceled\033[m\033[m"
echo ""
echo "" >> $log_file
echo "[ Error ]: $*" >> $log_file
echo "" >> $log_file
echo " Script is canceled." >> $log_file
echo "" >> $log_file
exit 1
}
containsElement () {
local e
for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
return 1
}
set_ping_addresses () {
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Try to set IP-Address(es) for ping test. This may take some time.." >> $log_file
fi
ping_test_ip=""
unset ping_ip_arr
declare -i i=0
for _host in $PING_TEST_HOSTS ; do
while [ $i -lt 2 ]; do
if dig +short $_host > /dev/null 2>&1 ; then
ping_test_ip=`dig +short $_host | head -1`
if ping -q -c2 $ping_test_ip >/dev/null 2>&1 ; then
ping_ip_arr+=("$ping_test_ip")
let i++
break
fi
fi
break
done
done
if [ ${#ping_ip_arr[@]} -lt 1 ]; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Setting IP-Address(es) for ping test FAILED!" >> $log_file
if [[ ${#previous_ping_ip_arr[@]} -gt 0 ]] ; then
ping_ip_arr=("${previous_ping_ip_arr[@]}")
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Take IP-Address(es) from previous ping test:" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] ${ping_ip_arr[@]}" >> $log_file
else
ping_ip_arr+=("$BACKUP_PING_ADDR")
fi
else
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] IP-Addresses for ping tests set to ${ping_ip_arr[@]}" >> $log_file
fi
unset previous_ping_ip_arr
previous_ping_ip_arr=("${ping_ip_arr[@]}")
fi
}
usage() {
echo
[ -n "$1" ] && echo -e "[ \033[1;31mError\033[m ] : $1\n"
echo -e " Usage:"
echo -e " \033[1m`basename $0` [OPTIONS] <device1> <device2> ..\033[m"
echo ""
echo -e " This script checks the status (online/offline) of the given devices. Afterward another"
echo " script called \033[1m`basename $netconfig_script`\033[m will be triggered to configure"
echo " the routing depending on the status of the devices."
echo ""
echo -e " It is strongly recommend to put \033[1mall devices, which should have a connection to"
echo -e " the internet\033[m, on the command line."
echo ""
echo -e " \033[1mNotice\033[m"
echo -e " On static line devices \033[1mappend \":<gateway>\"\033[m. This is very important,"
echo -e " otherwise this script will \033[1mNOT work as expected\033[m."
echo -e " Example:"
echo -e " \033[1m`basename $0` -l \"eth0 ppp-light\" eth0:172.16.0.1 ppp-light\033[m"
echo ""
echo -e " The declaration of the device(s) is mandatory."
echo ""
echo -e " Options:"
echo ""
echo -e " \033[1m-h\033[m"
echo -e " Prints this help\033[m"
echo ""
echo -e " \033[1m-l <list of online devices>\033[m"
echo -e " List of all (internet) devices known as online."
echo ""
exit 1
}
if [[ $EUID -ne 0 ]]; then
fatal "This script must be run as root" 1>&2
fi
if [[ ! -f "$netconfig_script" ]]; then
fatal "Netconfig script \"$netconfig_script\" not found!"
fi
## -------------------------------------------------
## --- If script is already running, stop execution
## -------------------------------------------------
LOCK_DIR=/tmp/`basename $0`.LOCK
if mkdir "$LOCK_DIR" 2> /dev/null ; then
## - Remove lockdir when the script finishes, or when it receives a signal
trap 'rm -rf "$LOCK_DIR"' 0 2 15
else
datum=`date +"%d.%m.%Y"`
msg="[ Error ]: A previous instance of script \"`basename $0`\" seems already be running.\n\n Exiting now.."
echo -e "To:${admin_email}\n${content_type}\nSubject:DSL Script Error $company -- $datum\n\n${msg}\n" | /usr/sbin/sendmail -F "DSL Monitoring $company" -f $from_address $admin_email 2> /dev/null
if $LOGGING_CONSOLE ; then
echo ""
echo "[ Error ]: A previous instance script \"`basename $0`\" seems already be running."
echo ""
echo " Exiting now.."
echo ""
fi
exit 1
fi
## -------------
## --- Configure
## -------------
while getopts l:h opt ; do
case $opt in
h) usage ;;
l) ONLINE_DEVICE_LIST=$OPTARG
;;
esac
done
shift `expr $OPTIND - 1`
INITIAL_DEVICE_LIST="$@"
if [[ -z "$INITIAL_DEVICE_LIST" ]]; then
INITIAL_DEVICE_LIST=$_INITIAL_DEVICE_LIST
fi
[[ -z "$INITIAL_DEVICE_LIST" ]] && usage "No device list given"
## - Define (non associative) array
## -
declare -a inet_devices_arr
declare -a dsl_devices_arr
declare -a static_devices_arr
declare -a online_devices_arr
declare -A static_gw_arr
declare -A dsl_gw_available_arr
for _device in $INITIAL_DEVICE_LIST ; do
if [[ "$_device" =~ : ]]; then
static_gateway="${_device##*:}"
_device="${_device%:*}"
static_gw_arr[$_device]="$static_gateway"
static_devices_arr+=("$_device")
else
dsl_devices_arr+=("$_device")
fi
inet_devices_arr+=("$_device")
done
for _online_device in $ONLINE_DEVICE_LIST ; do
online_devices_arr+=("$_online_device")
done
## - Define associative array
## -
declare -A remote_gw_arr
declare -A filetime_PID_arr
for inet_device in "${online_devices_arr[@]}" ; do
if containsElement "$inet_device" "${dsl_devices_arr[@]}" ; then
remote_gw_address="$(ip addr show $inet_device 2> /dev/null | grep peer | awk '{print$4}' | cut -d "/" -f1)"
else
remote_gw_address=${static_gw_arr[$inet_device]}
fi
remote_gw_arr[$inet_device]=$remote_gw_address
_pid_file=/var/run/${inet_device}.pid
if [ -f $_pid_file ]; then
filetime_PID_arr[$inet_device]=`stat -c %Y /var/run/${inet_device}.pid`
else
filetime_PID_arr[$inet_device]="NOT FOUND"
fi
done
declare -a ping_ip_arr;
declare -a previous_ping_ip_arr;
#echo "--"
#for _key in "${!filetime_PID_arr[@]}" ; do
# echo "filetime_PID_arr[$_key]: ${filetime_PID_arr[$_key]}"
#done
#
#for _key in "${!remote_gw_arr[@]}" ; do
# echo "remote_gw_arr[$_key]: ${remote_gw_arr[$_key]}"
#done
#
#for _device in ${online_devices_arr[@]} ; do
# echo "$_device is online"
#done
#echo "--"
#exit
echo "" >> $log_file
echo "" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## ---" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## --- Starting script `basename $0`" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## ---" >> $log_file
echo "" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Devices configured..: ${inet_devices_arr[@]}" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Devices Online......: ${online_devices_arr[@]}" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] DSL Devices.........: ${dsl_devices_arr[@]}" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Static Devices......: ${static_devices_arr[@]}" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Remote Gateways.....: ${remote_gw_arr[@]}" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## ---" >> $log_file
echo "" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## --- Initial Setup:" >> $log_file
## - Initial: get ping addresses
## -
set_ping_addresses
echo "" >> $log_file
while true ; do
changed=false
for inet_device in "${inet_devices_arr[@]}" ; do
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] ## --- Device $inet_device" >> $log_file
fi
## - Set interface name, routing tables name and, if available, remote gateway.
## -
if containsElement "$inet_device" "${dsl_devices_arr[@]}" ; then
## - Is remote a remote gateway for this device knpn?
## -
remote_gw_address="$(ip addr show $inet_device 2> /dev/null | grep peer | awk '{print$4}' | cut -d "/" -f1)"
iface_name="dsl-`echo $inet_device | cut -d '-' -f2`"
rt_name="dsl_`echo $inet_device | cut -d '-' -f2`"
if [[ -n "$remote_gw_address" ]]; then
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] Add $remote_gw_address to array dsl_gw_available_arr for DSL line $inet_device" >> $log_file
fi
dsl_gw_available_arr[$inet_device]=$remote_gw_address
else
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] No remote gateway found for DSL line $inet_device" >> $log_file
fi
if [[ ${dsl_gw_available_arr[$inet_device]+_} ]]; then
if $DEBUG; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] Unset dsl_gw_available_arr for DSL line $inet_device" >> $log_file
fi
unset ${dsl_gw_available_arr[$inet_device]}
fi
fi
else
remote_gw_address=${static_gw_arr[$inet_device]}
iface_name=$inet_device
rt_name="static_`echo $inet_device | cut -d '-' -f1`"
fi
## ---
## --- Check if routing through this connection works
## ---
## - Notice:
## - if no remote gateway is known (remote_gw_address is empty), then we don't
## - need to test here.
## -
device_is_online=false
if [[ -n "$remote_gw_address" ]]; then
## - Check if routing through this dsl connection realy works
## -
if [ ${#ping_ip_arr[@]} -lt 1 ]; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] No ip-address for ping-test is set. Skipping test.." >> $log_file
else
failed=true
for _key in ${!ping_ip_arr[@]} ; do
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] route add -net ${ping_ip_arr[$_key]} netmask 255.255.255.255 gw $remote_gw_address" >> $log_file
fi
#/sbin/ip rule add to ${ping_ip_arr[$_key]} table $rt_name
route add -net ${ping_ip_arr[$_key]} netmask 255.255.255.255 gw $remote_gw_address
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] ping4 -I $inet_device -q -c2 ${ping_ip_arr[$_key]}" >> $log_file
fi
#if ping -q -c2 ${ping_ip_arr[$_key]} >/dev/null 2>&1 ; then
if ping4 -I $inet_device -q -c2 ${ping_ip_arr[$_key]} >/dev/null 2>&1 ; then
if $DEBUG ; then
_local_gw=`curl -4 https://meine-ip.oopen.de 2> /dev/null`
if [ -n "$_local_gw" ]; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] Using local gateway \"$_local_gw\" for ping test" >> $log_file
fi
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] Ping test (to ${ping_ip_arr[$_key]}) for device \"${inet_device}\" was successful." >> $log_file
fi
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] route del -net ${ping_ip_arr[$_key]} netmask 255.255.255.255 gw $remote_gw_address" >> $log_file
fi
#/sbin/ip rule del to ${ping_ip_arr[$_key]} table $rt_name
route del -net ${ping_ip_arr[$_key]} netmask 255.255.255.255 gw $remote_gw_address
failed=false
device_is_online=true
break
fi
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] route del -net ${ping_ip_arr[$_key]} netmask 255.255.255.255 gw $remote_gw_address" >> $log_file
fi
#/sbin/ip rule del to ${ping_ip_arr[$_key]} table $rt_name
route del -net ${ping_ip_arr[$_key]} netmask 255.255.255.255 gw $remote_gw_address
done
if $failed ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Ping test for device \"${inet_device}\" failed" >> $log_file
#echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Status Devices \"$inet_device\" changed" >> $log_file
#echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Devices \"$inet_device\" is now OFFLINE" >> $log_file
## - Remote gateway is not reachable. So empty variable "remote_gw_address"
#remote_gw_address=
fi # End: if $failed
fi # End: if [ ${#ping_ip_arr[@]} -lt 1 ]; then
fi # End: if [[ -n "$remote_gw_address" ]]
## ---
## --- Now check, if something has changed
## ---
if $device_is_online; then
if containsElement "$inet_device" ${online_devices_arr[@]} ; then
## - <before> <now>
## -
## - online online
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] $inet_device is still online" >> $log_file
fi
## - Check if remote gateway has changed
## -
if [ "$remote_gw_address" != "${remote_gw_arr[$inet_device]}" ]; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ WARN ] Remote Gateway on device \"$inet_device\" has changed: ${remote_gw_arr[$inet_device]} --> $remote_gw_address" >> $log_file
remote_gw_arr[$inet_device]=$remote_gw_address
_pid_file=/var/run/${inet_device}.pid
if [ -f $_pid_file ]; then
filetime_PID_arr[$inet_device]=`stat -c %Y $_pid_file`
fi
changed=true
else
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] Remote Gateway on device \"$inet_device\": still ${remote_gw_arr[$inet_device]}" >> $log_file
fi
## - Test if pid-file's modify time hs changed
## -
## - Notice: that happens if your provider forces a reconnect (mostly one time a day
## - or in other words after 1440 minutes)
## -
_pid_file=/var/run/${inet_device}.pid
if [ -f $_pid_file ]; then
if [ "`stat -c %Y $_pid_file`" != "${filetime_PID_arr[$inet_device]}" ]; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Modify time for pid-file \"${inet_device}.pid\" has changed" >> $log_file
filetime_PID_arr[$inet_device]=`stat -c %Y $_pid_file`
changed=true
fi
fi
fi
else
## - <before> <now>
## -
## - offline online
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Status Devices \"$inet_device\" changed" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Devices \"$inet_device\" is now online" >> $log_file
## - Add device to array online_devices_arr
## -
online_devices_arr+=("$inet_device")
## - Add device to array remote_gw_arr
## -
remote_gw_arr[$inet_device]=$remote_gw_address
_pid=/var/run/${inet_device}.pid
if [ -f "$_pid" ]; then
filetime_PID_arr[$inet_device]=`stat -c %Y /var/run/${inet_device}.pid`
fi
changed=true
fi # END: if containsElement "$inet_device" ${online_devices_arr[@]}
else # ELSE: if $device_is_online; then
if containsElement "$inet_device" ${online_devices_arr[@]} ; then
## - <before> <now>
## -
## - online offline
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Status Devices \"$inet_device\" changed" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Devices \"$inet_device\" is now OFFLINE" >> $log_file
## - In case of DSL Device, have a look at the ppp deamon
## -
if containsElement "$inet_device" "${dsl_devices_arr[@]}" ; then
if ps -x | grep -E "/usr/sbin/pppd\s+call\s+$iface_name" > /dev/null 2>&1 ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] pppd for \"$iface_name\" is running: Waiting another period" >> $log_file
else
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Trying to start pppd for \"$inet_device\".." >> $log_file
/usr/sbin/pppd call $iface_name > /dev/null 2>&1
fi
fi
## - Remove device from array online_devices_arr
## -
for _index in ${!online_devices_arr[@]} ; do
if [ "${online_devices_arr[$_index]}" = "$inet_device" ]; then
unset online_devices_arr[$_index]
break
fi
done
## - Also remove device from remote_gw_arr
## -
unset remote_gw_arr[$inet_device]
## - In case of DSL Device, kill the concerning the ppp deamon
## -
if containsElement "$inet_device" "${dsl_devices_arr[@]}" ; then
_pid=`ps -ax | grep -e "pppd call $iface_name" | grep -v grep | awk '{print$1}'`
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Kill ppp-daemon for $iface_name (pid $_pid)" >> $log_file
kill -9 $_pid
fi
changed=true
else
## - <before> <now>
## -
## - offline offline
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] $inet_device is still offline" >> $log_file
fi
## - In case of DSL Device, have a look at the ppp deamon
## -
if containsElement "$inet_device" "${dsl_devices_arr[@]}" ; then
if ps -x | grep -E "/usr/sbin/pppd\s+call\s+$iface_name" > /dev/null 2>&1 ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] pppd for \"$iface_name\" is running: Waiting another period" >> $log_file
else
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Trying to start pppd for \"$inet_device\".." >> $log_file
/usr/sbin/pppd call $iface_name > /dev/null 2>&1
fi
fi
fi # END: if containsElement "$inet_device" ${online_devices_arr[@]}
fi # END: if $device_is_online; then
done # End: for inet_device in "${inet_devices_arr[@]}"
if $changed ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Status Online Devices changed" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Online Devices: ${online_devices_arr[@]}" >> $log_file
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Reconfigure Routing: invoking script \"$netconfig_script\".." >> $log_file
if [[ -z "${online_devices_arr[@]}" ]]; then
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] $netconfig_script $INITIAL_DEVICE_LIST" >> $log_file
fi
$netconfig_script $INITIAL_DEVICE_LIST > /dev/null 2>&1
else
_LIST=
for _device in ${online_devices_arr[@]} ; do
_LIST="$_LIST $_device"
done
_LIST=`echo "${_LIST}" | sed -e 's/^[ \t]*//'`
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] $netconfig_script -l \"$_LIST\" $INITIAL_DEVICE_LIST" >> $log_file
fi
$netconfig_script -l "$_LIST" $INITIAL_DEVICE_LIST > /dev/null 2>&1
fi
datum=`date +"%d.%m.%Y"`
msg="[ `date +\"%H:%M:%S\"` ]: Status Online Devices changed..\n Online Devices: ${online_devices_arr[@]}\n\n Script \"$netconfig_script\" was invoked to reconfigure routing."
echo -e "To:${admin_email}\n${content_type}\nSubject:DSL Status changed $company -- $datum\n\n${msg}\n" | /usr/sbin/sendmail -F "DSL Monitoring $company" -f $from_address $admin_email 2> /dev/null
fi # END if $changed
## - Set IP-adresses for Ping-Test at next run
## -
if [[ ${#online_devices_arr[@]} -gt 0 ]]; then
## - Try to set IP-Addresses for ping test
## -
set_ping_addresses
elif [[ ${#dsl_gw_available_arr[@]} -gt 0 ]]; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Try to set default gateway to an existing DSL line .." >> $log_file
__set_default_gatway=false
default_gw_deleted=false
for _device in "${dsl_devices_arr[@]}" ; do
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Device: $_device - Gateway: ${dsl_gw_available_arr[$_device]}" >> $log_file
fi
if [[ -n "${dsl_gw_available_arr[$_device]}" ]]; then
## - Delete old default route
## -
if ! $default_gw_deleted ; then
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] /sbin/ip route delete default" >> $log_file
/sbin/ip route delete default >> $log_file 2>&1
else
/sbin/ip route delete default > /dev/null 2>&1
fi
default_gw_deleted=true
fi
## - Try to set default gateway to this DSL connection
## -
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] /sbin/ip route add default via ${dsl_gw_available_arr[$_device]} dev $_device" >> $log_file
/sbin/ip route add default via ${dsl_gw_available_arr[$_device]} dev $_device >> $log_file 2>&1
else
/sbin/ip route add default via ${dsl_gw_available_arr[$_device]} dev $_device > /dev/null 2>&1
fi
if [[ "$?" == "0" ]]; then
__set_default_gatway=true
break
fi
fi
done # END: for _device in "${inet_devices_arr[@]}"
if ! $__set_default_gatway ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] No default gateway (for DSL Device ${_device}) is set!" >> $log_file
else
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Default gateway on DSL Device $_device is set to ${inet_devices_arr[$_device]}" >> $log_file
## - Try to set IP-Addresses for ping test
## -
set_ping_addresses
fi
elif [[ ${#static_devices_arr[@]} -gt 0 ]]; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Try to set default gateway to an existing static line .." >> $log_file
__set_default_gatway=false
default_gw_deleted=false
for _device in "${static_devices_arr[@]}" ; do
## - Delete old default route
## -
if ! $default_gw_deleted ; then
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] /sbin/ip route delete default" >> $log_file
/sbin/ip route delete default >> $log_file 2>&1
else
/sbin/ip route delete default > /dev/null 2>&1
fi
default_gw_deleted=true
fi
## - Set new default route
## -
if $DEBUG ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] /sbin/ip route add default via ${static_gw_arr[$_device]} dev $_device" >> $log_file
/sbin/ip route add default via ${static_gw_arr[$_device]} dev $_device >> $log_file 2>&1
else
/sbin/ip route add default via ${static_gw_arr[$_device]} dev $_device > /dev/null 2>&1
fi
if [[ "$?" == 0 ]] ; then
__set_default_gatway=true
break
fi
done
if ! $__set_default_gatway ; then
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] No default gateway is set!" >> $log_file
else
echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Default gateway is set to ${static_gw_arr[$_device]}" >> $log_file
## - Try to set IP-Addresses for ping test
## -
set_ping_addresses
fi
fi # if [[ ${#online_devices_arr[@]} -gt 0 ]]
sleep 30
done
exit 0
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