gwbackup version 2.0 (gwbackupNomain)

bash script for OS Vyatta. It is used for testing internet connection and reservation of two ISP. For reservetion we use VRRP group priority.

####Install

On first router

route add -host 8.8.4.4 gw *.*.*.* 
route add -host 208.67.222.123 gw *.*.*.* 
*.*.*.* is inteface of seconf router

mkdir /config/scripts/gwbackupNomain
cd /config/scripts/gwbackupNomain

copy files gwbackupNomain, chooseGW, rt1up, rt2up, rt1down, rt2down, bothDown to new directory

For autostart make link

ln -s /config/scripts/gwbackupNomain/gwbackup /config/scripts/postconfig.d/gwbackupNomain

For single word command in CLI like chooseGW make link to /bin

ln -s /config/scripts/gwbackupNomain/chooseGW /bin/chooseGW

On second router copy rt2vrrpset and run it

cd /config/scripts
scp name@yourserver:/your/parth/rt2vrrpset .
chmod a+x rt2vrrpset
ln -s /config/scripts/rt2vrrpset /config/scripts/postconfig.d/rt2vrrpset
./rt2vrrpset

How to use

You can change parameters on your own

Parameters affecting the notification by mail

ISP1="ISP1" # ISP1 name
ISP2="ISP2" # ISP2 name

RECIPIENTS=" testmail1@gmail.com testmail2@gmail.com " # Use a space to separate values

IPs monitoring via primary GW

GW1IP1="8.8.8.8"
GW1IP2="208.67.222.222"

IPs monitored via backup GW (static routes via secondary GW need to be configured for them)

GW2IP1="8.8.4.4"
GW2IP2="208.67.222.123"

Settings that affect the speed of response to the loss of the connection and counteraction to the flap


PingCount="5"       # How much ping on every monitoring ip
GW1OKCOUNT="3"      # ISP1 down if count less then this parametr
GW2OKCOUNT="3"      # ISP2 down if count less then this parametr
SLEEP_TIME="15"     # Wait seconds after every cycle of ping ????
CYCLES="10"         # How much cycles wait when two ISP change state to UP 
                    # to ???? in normal state and start load balancing 
                    # Try not to set a very small value to avoid flapping

For start using script

bash /config/script/gwbackupNomain/gwbackupNomain &

For stoping script Need to test!!!!!!!!!!!!!!!!!!

ps aux | grep -ie gwbackupNomain | awk '{print "kill -9 " $2}'

###For choose VRRP master for vlan use

usr@rt1:/ chooseGW

At first

Choose master router (1 or 2 or rt1 or rt2) or press Enter to exit

And now choose VLAN(s) for this Master. Press Enter for finish choosing VLANs.

VLAN number

press enter

Choose another VLAN or press "ENTER" to exit.

Do you want use gateway RT1 for VLAN (1 11 23)? (y/n)

press yes or no

Choose another router or press "ENTER" for exit.

This setting will affect on next cycle of gwbackup in load balance state!

###Testing

show log

You can see log message with subject "***GWBACKUP" Also you can search VRRP message in log file for debug

To see for what VLANs router is master

show vrrp summary

For detailed view of VRRP groups

show vrrp

###Debuging For debuging

bash /config/script/gwbackupNomain/gwbackupNomain -v

For extended debuging

bash /config/script/gwbackupNomain/gwbackupNomain -vv

d-malko/gwbackup

gwbackup version 2.0 (gwbackupNomain)

How to use