SSH into a virtual IP

clusterload balancingssh

I am attempting to SSH into a virtual IP on a loadbalancer. I want to connect to this virtual host name and have it connect me to one of the virtual hosts. The problem is when I try to ssh to the virtual IP, one of the actual IPs respons (reseting my connection).

Is there a way to configure the network to allow an ssh connection to the virtual host-name and have it connect me to one of the hosts?

eg network:
192.168.0.3 — server-cluster01
– .4 — server01
– .5 — server02
– .6 — management

Managment's host file contains the entry for the server-cluster01.

From managment box:

root@managment~: ssh server-cluster01

From the monitoring tools I get

192.168.0.6 -> syn 192.168.0.3
192.168.0.4 -> ack 192.168.0.6
192.168.0.6 -> rst 192.168.0.3
(repeat)

Best Answer

This handshake should look similarly wrong for any TCP connection to the cluster, not specifically for ssh. (And in fact the same problem should occur for udp). Can yuo confirm (by sniffing) that other (working) services continue the handshake with the virtual address or with one of the member addresses?

(Sorry, this should be a comment, but I can't)

Related Solutions

Ssh – Create a Virtual Host using SSH

SSH also supports dynamic forwarding. By specifying a dynamic port, the ssh client will create a SOCKS5 proxy which you can then use to forward all traffic and have it leave from the remote host.

ssh -D2000 machine-a

You can configure most programs (browsers and ftp, etc) to use a socks proxy. All you would need to do in this example is point to localhost:2000 as a SOCKS proxy.

Ssh – How to automate SSH login with password

Don't use a password. Generate a passphrase-less SSH key and push it to your VM.

If you already have an SSH key, you can skip this step… Just hit Enter for the key and both passphrases:

$ ssh-keygen -t rsa -b 2048
Generating public/private rsa key pair.
Enter file in which to save the key (/home/username/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/username/.ssh/id_rsa.
Your public key has been saved in /home/username/.ssh/id_rsa.pub.

Copy your keys to the target server:

$ ssh-copy-id id@server
id@server's password:

Now try logging into the machine, with ssh 'id@server', and check-in:

.ssh/authorized_keys

Note: If you don't have .ssh dir and authorized_keys file, you need to create it first

to make sure we haven’t added extra keys that you weren’t expecting.

Finally, check to log in…

$ ssh id@server

id@server:~$

You may also want to look into using ssh-agent if you want to try keeping your keys protected with a passphrase.

Best Answer

Related Solutions

Ssh – Create a Virtual Host using SSH

Ssh – How to automate SSH login with password

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