Red Hat LINUX VIRTUAL SERVER 4.6 - ADMINISTRATION Manuale di Installazione Scaricare il pdf (Pagina 169)

Chapter 8. Installing and configuring the golden image 149

To configure automount, perform the following steps:

1. Make a backup copy of the /etc/auto.master file and add the following line at the bottom:

# cd /etc

# cp auto.master auto.master.orig

# vi auto.master // add one line at the bottom

...

+auto.master

/nfs /etc/auto.cloner

2. The new line specifies that the file system mounted under the /nfs/ directory will be

configured in the /etc/auto.cloner file. Now create the /etc/auto.cloner file, and add

one line that points to the RHEL 6 installation tree that is NFS-exported from the cloner:

# vi auto.cloner

rhel6 -ro,hard,intr 9.60.18.223:/nfs/rhel6

This line specifies that under /nfs/ (in auto.master), when the rhel6/ directory (field 1) is

accessed, the automounter will use the specified options (field 2) to mount the directory

(field 3).

3. Create the /nfs/ directory. Restart the autofs service to pick up the new configuration. List

the contents of the /nfs/rhel6/ directory. Even though this directory does not exist as a

local file system, it is automatically mounted when referenced:

# mkdir /nfs

# service autofs reload

Reloading maps

4. Show that the /nfs/rhel6/ directory is automatically mounted:

# ls /nfs/rhel6

boot.cat RELEASE-NOTES-es-ES.html RELEASE-NOTES-pt-BR.html

EULA RELEASE-NOTES-fr-FR.html RELEASE-NOTES-ru-RU.html

...

8.2.2 Configuring the yum command for online updates

You now configure the yum command so it can install RPMs from the automounted installation

tree. The configuration is identical to the cloner because in both instances the installation tree

is in the /nfs/rhel6/ directory. However, on the cloner, this directory is local, while on the

golden image (and later the clones), the directory is automounted.

To configure the yum command, perform the following steps:

1. You could create a file named rhel6.repo in the /etc/yum.repos.d directory again, or you

could copy the same file from the cloner that you created previously. In this example, the

scp command is used to copy the file:

# cd /etc/yum.repos.d

# scp gpok223:/etc/yum.repos.d/rhel6.repo .

The authenticity of host 'gpok223 (9.60.18.223)' can't be established.

RSA key fingerprint is 37:5f:83:99:ba:9e:10:14:04:65:06:e1:11:d9:d9:cd.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added 'gpok223,9.60.18.223' (RSA) to the list of known

hosts.

root@gpok223's password:

rhel6.repo 100% 73 0.1KB/s 00:00

1 2 ... 164 165 166 167 168 169 170 171 172 173 174 ... 295 296

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Red Hat LINUX VIRTUAL SERVER 4.6 - ADMINISTRATION Manuale di Installazione Pagina 169

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