IBM DB2 manual Setup of SSH and NFS, Installing SSH on managed machines

2.3.1 Setup of SSH and NFS

Before we can start the mass deployment, a secure and convenient authentication channel must be set up to allow us to issue commands with proper privileges to the remote machines.

Installing SSH on managed machines

For AIX platforms, OpenSSH and its prerequisites might not be installed by default. Since in our case, ssh is required as the remote shell tool, OpenSSH has to be installed and configured. For details, visit the AIX Information Center on the IBM Web site and select the appropriate version of the AIX:

http://publib16.boulder.ibm.com/pseries/index.htm

After OpenSSH has been installed, we can see the file sets, similar to those in Example 2-9.

Example 2-9 NFS file sets on AIX

openssh.base.client	4.3.0.5301	COMMITTED	Open Secure Shell Commands
openssh.base.server	4.3.0.5301	COMMITTED	Open Secure Shell Server
openssh.license	4.3.0.5301	COMMITTED	Open Secure Shell License
openssh.man.en_US	4.3.0.5301	COMMITTED	Open Secure Shell
openssh.msg.en_US	4.3.0.5301	COMMITTED	Open Secure Shell Messages -
openssh.base.client	4.3.0.5301	COMMITTED	Open Secure Shell Commands
openssh.base.server	4.3.0.5301	COMMITTED	Open Secure Shell Server

Note: For Linux platforms, OpenSSH is generally installed by default. Use the command rpm to check for availability of OpenSSH on your Linux:

rpm -qagrep -i ssh

Then ensure that the ssh service is up and running. For example, on SUSE Linux or Red Hat Linux, you can issue the service command to obtain a status report from the operating system:

service sshd status

After the ssh service is available on your UNIX or Linux system, you can use the ssh client to connect to it. The basic ssh command is shown below:

ssh [user]@<hostname> [command]

During the first ssh connection to the machine, you will be prompted to accept a RSA authentication key. Type yes and input the user’s password. See Example 2-10.

Chapter 2. DB2 server deployment 59