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CHAPTER 5: SERIAL PORT, HOST DEVICE AND USER CONFIG
Browse again to the stored RSA (or DSA) Public Key and upload it to Slave’s SSH Authorized Key.
Click Apply.
The next step is to Fingerprint each new slave-master connection. This once-off step will validate that you are establishing an SSH
session to who you think you are. On the first connection the Slave will receive a fingerprint from the Master which will be used on all
future connections.
Log in to the master console server as root.
Establish an SSH connection to the remote slave host:
# ssh remote-host-name
Once the SSH connection has been established, you will be asked to accept the key. Answer yes and the fingerprint will be added to
the list of known hosts. For more details on Fingerprinting see Section 16.6.
NOTE: If you are asked to supply a password, then there is a problem with uploading keys. The keys should remove any need to
supply a password.
5.6.3 CONFIGURE THE SLAVES AND THEIR SERIAL PORTS
You can now begin setting up the slaves and configuring slave serial ports from the master console server.
Select Serial & Network > Cascaded Ports on the master’s Management Console.
FIGURE 5-22. SERIAL & NETWORK: CASCADED PORTS SCREEN
Click Add Slave to add clustering support.
NOTE: You cannot add any slaves until you have automatically or manually generated SSH keys.
To define and configure a slave:
Enter the remote IP Address (or DNS Name) for the Slave console server.
Enter a brief Description and a short Label for the slave.
Use a convention here that enables effective management of large networks of clustered console servers and the connected devices.
Enter the full number of serial ports on the slave unit in Number of Ports.
Click Apply.
This will establish the SSH tunnel between the master and the new slave.
The Serial & Network > Cascaded Ports menu displays all the slaves and the port numbers that have been allocated on the master. If the
master console server has 16 ports of its own, then ports 1–16 are pre-allocated to the master, so the first slave added will be assigned port
number 17 onwards.
