using ssh on CentOS7 for logging on remote machine

[nitinkumar]

I have created two CentOS 7 virtual machines and am trying to remote log in to another CentOS VM using ssh.
After using command, i am asked to give password for logging in to another machine. So far it is Ok. But after connection, i am
not getting shell prompt of another machine and i get prompt of my current session. but when I type "exit" i get message as
"connection to remote machine is closed." This means I have established a connection. Then why i am not able to log on to another machine?

What steps i need to take to debug this problem?

[jlehtone]

not getting shell prompt of another machine and i get prompt of my current session.

How can you tell that?

Do "ip ro" in that prompt, exit, and "ip ro" again. Do you get exactly same output?

[nitinkumar]

I can say i am not getting connected because i find myself in the same machine from where i give ssh command.

"ip ro" command give exactly same output before and after exit.

One more thing, i get connected to the other machine when I give ssh < Ip address of the other machine> but not when I give FQDN . I have given
name and IP address in /etc/hosts and name in /etc/hostname files. I think I am missing some very simple thing.

[jlehtone]

i get connected to the other machine when I give ssh < Ip address of the other machine> but not when I give FQDN.

This is important. Problem is not in ssh. Problem is in name resolution.

I have given name and IP address in /etc/hosts and name in /etc/hostname files.

Note:
My CentOS 7 system does not have file /etc/hostname at all. Package 'systemd' formally provides it, but file is not there.

You may use hostnamectl(1) to change the value of this file during runtime from the command line.
Use systemd-firstboot(1) to initialize it on mounted (but not booted) system images.

When I say "ssh bar", the system looks for a "bar" first from /etc/hosts and then with servers listed in /etc/resolv.conf

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# grep ^hosts /etc/nsswitch.conf 
hosts:      files dns

(My host gets a transient hostname from DHCP server and resolves all names with DNS.)

Does the /etc/hosts in the machine that you try to connect from have line:

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<Ip address of the other machine> FQDN

You can see the IP address that a name resolves to by running:

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ping -c 1 name

[nitinkumar]

Thanks for your help. I could resolve the issue.