Hence forth we don't have to use edit this cookie option

We must have vpn connection

For this url “test.learnexa.com” back-end testing .

we have to either use 10.166.152.16 or that 10.166.152.240 in the /etc/hosts file

But not add both entries at the same time

app01 node ip = 10.166.152.16
app02 node ip = 10.166.152.240

step 1

open hosts file for edit make sure have root or sudo privileges 
 vi /etc/hosts

step 2 add any one of the entries which app server wanna test

10.166.152.16 test.learnexa.com
10.166.152.240 test.learnexa.com

step3

save and exit