Red Hat SATELLITE 5.1.0 RELEASE NOTES Instrukcja Instalacji Pobierz pdf (Strona 155)

Chapter 9. Configuring RHEL 5.2 for cloning 137

Linux version 2.6.18-92.el5 (brewbuilder@btest1.z900.redhat.com) (gcc version 4.1.2

20071124 (Red Hat 4.1.2-41)) #1 SMP Tue Apr 1 19:03:24 EDT 2008

We are running under VM (64 bit mode)

...

Red Hat Enterprise Linux Server release 5.2 (Tikanga)

Kernel 2.6.18-92.el5 on an s390x

virtc531 login:

Your new system should come up cleanly using the modified IP address and host name.

Modify the SSH keys on the target system

Start an SSH session to the new clone as root.

The SSH keys that were copied are identical to those of the golden image. Remove them and

restart the sshd service. This will trigger the ssh-keygen command to automatically create

three new keys that are unique to this new guest. Note that sshd is designed so that it can be

restarted remotely, so you will not lose your SSH client connection:

# cd /etc/ssh

# rm -f /etc/ssh/ssh_host_*

# service sshd restart

Stopping sshd: [ OK ]

Generating SSH1 RSA host key: [ OK ]

Generating SSH2 RSA host key: [ OK ]

Generating SSH2 DSA host key: [ OK ]

Starting sshd: [ OK ]

At this point you have now cloned a Linux system manually. You can look around the new

system. It should be identical to the golden image except for the IP address and host name.

Next you will learn how to clone a Linux system automatically. You will use the LINUX01 user

ID again. To clone, the target user ID must be logged off. You could shut the new system

down cleanly, but because you will be cloning again, it does not matter. Go to the 3270

session and log off the LINUX01 user ID:

==> #cp log

9.3 Cloning one new virtual server

Now that you have cloned a server manually and better understand the steps, you can use

the clone script to clone automatically.

9.3.1 Creating a configuration file for LINUX01

For each Linux guest you want to clone, you must create a configuration file that you can use

to customize the image after cloning. Perform the following steps on the LNXINST installation

server:

1. Open an SSH session to LNXINST as root.

2. Install the clone script RPM:

# rpm -ivh /nfs/virt-cookbook-RH5.2/clone-1.0-5.s390x.rpm

Preparing... ########################################### [100%]

1:clone ########################################### [100%]

1 2 ... 150 151 152 153 154 155 156 157 158 159 160 ... 267 268

Brak uwag

Red Hat SATELLITE 5.1.0 RELEASE NOTES Instrukcja Instalacji Strona 155