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B.2.2. FTP, Setting Up a Red Hat

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Setting Up a Red Hat Installation Server exportfs -r This configures the most basic read-only export to all hosts on our network. If you want to include more advanced options in your export, such as exporting to certain hosts only, or on a certain subnet only, see the man page for the exports file at exports (5). • NFS needs to be installed and running To check, type the command: showmount -e hostname Entering the showmount command without the hostname parameter will check the local system. If NFS is not active, you will see a message similar to showmount: ServerA: RPC: Program not registered • Portmap needs to be running, and can be checked with the command: service portmap status B.2.2. FTP To enable installing over FTP, you need to allow FTP access to the installation directory on the server. This can be either anonymous FTP access or access through a named account with a password. If you want anonymous FTP to point to a different directory, you can use sym links to point to the installation directory on the server. B.2.3. HTTP If you have a web server running and want to enable HTTP access to your installation server, then add sym links from your document root to the installation server directory to grant access. The installation server is now ready to use. Make sure you note the server name or IP address and the directory path to the installation directory you created. 35

Section	Page
XenServer Virtual Machine Installation Guide	1
Table of Contents	4
Chapter 1. About this document	6
1.1. Overview	6
1.2. How this Guide relates to other documentation	6
Chapter 2. Creating VMs	7
2.1. Overview	7
2.2. Virtual memory and disk size limits	7
2.3. XenServer product family virtual device support	8
2.4. Physical to Virtual Conversion (P2V)	9
2.4.1. General Guidelines for Virtualizing Physical Servers	10
2.5. Cloning an existing VM	11
2.6. Importing an exported VM	11
2.6.1. Exporting a VM	12
2.6.2. Importing a VM	12
Chapter 3. Installing Windows VMs	14
3.1. Making the ISO available to XenServer Hosts	14
3.1.1. Copying ISOs to local storage	15
3.2. Windows paravirtualized drivers	16
3.3. Remote Desktop	16
3.4. Preparing to clone a Windows VM	17
3.5. Release Notes	18
3.5.1. General Windows Issues	18
3.5.2. Windows 2003 Server	18
3.5.3. Windows XP SP2	18
3.5.4. Windows 2000 Server	18
3.5.5. Windows Vista	18
Chapter 4. Installing Linux VMs	19
4.1. Installation of a built-in distribution	20
4.2. Installing Linux from vendor media to a VM	20
4.3. Installing Linux from a network installation server to a VM	22
4.4. Physical-to-Virtual Installation of a Linux VM	23
4.4.1. Guest Installation Network	23
4.5. Installing the Linux guest agent	24
4.6. Preparing to clone a Linux VM	25
4.6.1. Machine Name	25
4.6.2. IP address	25
4.6.3. MAC address	26
4.7. Time handling in Linux VMs	26
4.8. Configuring VNC for VMs	26
4.8.1. Setting up Red Hat-based VMs for VNC	26
4.8.1.1. Determining the location of your VNC configuration file	27
4.8.1.2. Configuring GDM to use VNC	27
4.8.1.3. Firewall settings	28
4.8.1.4. VNC screen resolution	28
4.8.2. Setting up SLES-based VMs for VNC	29
4.8.2.1. Checking for a VNCserver	29
4.8.2.2. Enabling Remote Administration	29
4.8.2.3. Modifying the xinetd configuration	30
4.8.2.4. Firewall settings	30
4.8.2.5. VNC screen resolution	31
4.8.3. Setting up Debian-based VMs for VNC	32
4.8.4. Checking runlevels	32
4.9. Release Notes	32
4.9.1. Debian Sarge 3.1 and Etch 4.0	32
4.9.2. Red Hat Enterprise Linux 3	33
4.9.3. Red Hat Enterprise Linux 4	33
4.9.3.1. Preparing a RHEL 4.x guest for P2V	34
4.9.4. Red Hat Enterprise Linux 5	34
4.9.5. CentOS 4	35
4.9.6. CentOS 5	35
4.9.7. SUSE Enterprise Linux 9	35
4.9.8. SUSE Enterprise Linux 10 SP1	35
4.9.9. Oracle Enterprise Linux 5	35
Chapter 5. Updating VMs	36
5.1. Updating Windows operating systems	36
5.2. Updating paravirtualized drivers for Windows VMs	36
5.3. Updating Linux kernels and guest utilities	37
Appendix A. Creating ISO images	38
Appendix B. Setting Up a Red Hat Installation Server	39
B.1. Copy installation media	39
B.2. Enable remote access	39
B.2.1. NFS	39
B.2.2. FTP	40
B.2.3. HTTP	40
Appendix C. Troubleshooting VM problems	41
C.1. VM crashes	41
C.1.1. Linux VMs	41
C.1.2. Windows VMs	41
C.2. Troubleshooting boot problems on Linux VMs	42

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Setting Up a Red Hat

Installation Server

exportfs -r

This configures the most basic read-only export to all hosts on our network. If you want to

include more advanced options in your export, such as exporting to certain hosts only, or on a

certain subnet only, see the man page for the exports file at exports (5).

•

NFS needs to be installed and running

To check, type the command:

showmount -e

hostname

Entering the showmount command without the hostname parameter will check the local sys-

tem.

If NFS is not active, you will see a message similar to

showmount: ServerA: RPC: Program not registered

•

Portmap needs to be running, and can be checked with the command:

service portmap status

B.2.2. FTP

To enable installing over FTP, you need to allow FTP access to the installation directory on the

server. This can be either anonymous FTP access or access through a named account with a

password.

If you want anonymous FTP to point to a different directory, you can use sym links to point to

the installation directory on the server.

B.2.3. HTTP

If you have a web server running and want to enable HTTP access to your installation server,

then add sym links from your document root to the installation server directory to grant access.

The installation server is now ready to use. Make sure you note the server name or IP address

and the directory path to the installation directory you created.