Hello All,
I have two Linux servers, which form a clustered architecture. Linux server 1 and Linux server 2 are the two Linux servers in this architecture.
Server 2 is failover server for Server 1 i.e. whenever Server 1 is down by any reason , the application of Server 1 starts running on Server 2.
Also during such failover, the users who all are present on Server 1 are automatically directed to Server 2 but this is transparent to the Users on this Server 1.
So all the Users on Server 1 should have their passwords synchronized on Server 2, so that they can work without facing any problem.
So can anyone tell me how to synchronize the passwords of all the users present on Server 1 with that on Server 2.

Step 1 (on server 1)
awk -F: '{print $1 ":" $2}' /etc/shadow > work_file
Step 2:
<use whatever means you have to put the file on servr 2>
Step 3 (on server 2)
chpasswd -e < work_file

This must all be done as "root", of course. I would be inclined to use something like scp to do the transfer. I would be even more inclined to automate this, running it from crontab on server 2, using public key authentication to grab /etc/shadow.

On my cluster, I just copy the passwd/shadow files by hand when needed . On the desktops, I use NIS (insecure but easy to set up). There's also LDAP authentication which allows for better security.