SUSE Linux Enterprise Server 11 SP2 for UEFI Clients

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1 Best Practices White Paper Enterprise Linux SUSE Linux Enterprise Server 11 SP2 for UEFI Clients Table of Contents page SUSE Linux Enterprise Server 11 SP2 and PXE Boot for UEFI Clients... 2 UEFI IPv4 PXE Setup Procedure... 2 UEFI IPv6 PXE Setup Procedure...4 Glossary... 7

2 Enterprise Linux Best Practices White Paper SUSE Linux Enterprise Server 11 SP2 for UEFI Clients SUSE Linux Enterprise Server 11 SP2 and PXE Boot for UEFI Clients The Unified Extensible Firmware Interface (UEFI) is quickly replacing BIOS as the new standard for firmware interfaces. Because many network administrators use network install and because SUSE saw the importance of this new standard, SUSE invested early in supporting this new technology in SUSE Linux Enterprise Server. While Service Pack 1 of version 11 officially introduced support for the installation, Service Pack 2 adds the ability for SUSE Linux Enterprise Server to act as the boot server for UEFI machines using a Preboot Execution Environment (PXE). Intel experts, together with SUSE engineering, have developed a workflow for easy activation of remote boot for UEFI clients using SUSE Linux Enterprise Server as the PXE boot server. The average network administrator should be able to follow the workflow without difficulty. This workflow covers IPv4 as well as IPv6 networks. from a command-line interface, the steps requiring YaST may be completed using the text-mode YaST utility (type yast from a command line). Disable Firewall 2. In the Security and Users section, select Firewall. 3. Select Disable Firewall Automatic Starting. 4. Click Stop Firewall Now. The following documentation is the result of this cooperation. Special thanks go to Dale Cox, Harry Hsiung and Vincent Zimmer at Intel for their significant contributions to this best practices paper.. UEFI IPv4 PXE Setup Procedure This section walks through setting up a UEFI PXE on a system running SUSE Linux Enterprise Server to allow installation of SUSE Linux Enterprise Server on a UEFI client by booting from an IPv4 network. You will need a clean installation of SUSE Linux Enterprise Server on the machine you intend to use as the PXE boot server, root access, the first installation DVD and a network adapter installed. If working 2

3 5. Click Next. 6. Click Finish. Configure Network Adapter 2. In the Network Devices section, select Network Settings. 3. Select the adapter you wish to use, then click Edit. 4. Select Statically assigned IP Address. Enter the following settings: IP Address: Subnet Mask: /24 4. Select FTP Server in YaST. 5. You will be asked to install the FTP server if it has not already been installed. Choose to install and accept all.defaults. 6. Select TFTP Server in YaST. 7. Click Enable and it will offer to install the TFTP Server. Choose to install and accept all defaults. Configure the DHCP Daemon (DHCPD) In this section you will select the interface that DHCPD should listen on and create a configuration file. A default configuration file may already exist. Create a copy if you would like to keep the default configuration file. 1. If you have multiple network adapters on your system. you may have to edit /etc/sysconfig/dhcpd and verify. DHCPD_INTERFACE is set to the network adapter you would like the DHCP server to listen on (Usually eth0 ). 2. Create /etc/dhcpd.conf with the following contents: #dhcpd.conf option domain-name pxetest.org ; option domain-name-servers ; option routers ; ddns-update-style none; 5. Click Next. 6. Click OK. Install Services In this section you will install the necessary services for PXE boot: Dynamic Host Configuration Protocol (DHCP), FTP and Trivial FTP (TFTP) servers..if your installation already has these services installed, skip this section. 2. In the Network Services section, select DHCP Server. 3. You will be asked to install the DHCP server if it is not.already installed. Choose to install and accept all defaults. subnet netmask { range ; default-lease-time 14400; max-lease-time ; next-server ; filename bootx64.efi ; } Configure the EFI Linux Boot Loader (ELILO) In this section you will retrieve ELILO from the installation DVD and create a configuration file. 1. Place the first SUSE Linux Enterprise Server install DVD in your DVD drive. 2. Open a root terminal. 3. Create a temporary directory, mount the boot image and copy the contents. 3

4 Enterprise Linux Best Practices White Paper SUSE Linux Enterprise Server 11 SP2 for UEFI Clients # mkdir /tmp/efi-img # mount t vfat /media/<name of disc>/boot/x86_64/efi /tmp/efi-img # cp /tmp/efi-img/efi/boot/* /tftpboot 4. Create a file at /tftpboot/elilo.conf with the following.contents: prompt timeout=50 delay=100 image=/linux label=suse initrd=/initrd append= install=ftp:// /sles sysrq=1 Copy Installation Files # cd /media/<name of disc> # mkdir /srv/ftp/sles # cp r * /srv/ftp/sles UEFI IPv6 PXE Setup Procedure This section walks through setting up a UEFI PXE on a system running SUSE Linux Enterprise Server to allow installation of SUSE Linux Enterprise Server on a UEFI client by booting from an IPv6 network. You will need a clean installation of SUSE Linux Enterprise Server on the machine you intend to use as the PXE boot server, root access, the first installation DVD and a network adapter installed. If working from a command-line interface, the steps requiring YaST may be completed using the text-mode YaST utility (type yast from a command line). Disable Firewall 2. In the Security and Users section, select Firewall. 3. Select Disable Firewall Automatic Starting. 4. Click Stop Firewall Now. Restart DHCPD Because we changed the configuration file, you will have to restart the DHCP. # service dhpcd start Shutting down ISC DHCPv4 4.x Server Starting ISC DHCPv4 4.x Server [chroot] done done Test the Setup on a Client 1. Connect an EFI machine to the network and turn it on. 2. Enter the Boot Option menu by pressing spacebar on startup. 3. Select Boot Manager from the menu. 4. Select EFI Network to boot using IPv4. 5. At this point, you should see ELILO appear and prompt you to install SUSE Linux Enterprise Server. For more information. on remote installation of SUSE Linux Enterprise Server. via PXE, see the SUSE Linux Enterprise Server 11 SP2. Deployment Guide, section Click Next. 6. Click Finish. Configure Network Adapter 2. In the Network Devices section, select Network Settings. 4

5 3. Select the adapter you wish to use, then click Edit. 4. Select Statically assigned IP Address. Enter the following settings: IP Address: Subnet Mask: /24 5. Click Add under the Additional Addresses section to add. an alias: Alias Name: ipv6static IP Address: fc00:ba49:1625:fb0f::137 Netmask: /64 6. Click OK. Install Services In this section you will install the necessary services for PXE boot: Dynamic Host Configuration Protocol (DHCP), FTP and Trivial FTP (TFTP) servers..if your installation already has these services installed, skip this section. 2. In the Network Services section, select DHCP Server. 3. You will be asked to install the DHCP server if it is not.already installed. Choose to install and accept all defaults. 4. Select FTP Server in YaST. 5. You will be asked to install the FTP server if it has not already been installed. Choose to install and accept all.defaults. 6. Select TFTP Server in YaST. 7. Click Enable and it will offer to install the TFTP Server. Choose to install and accept all defaults. Configure DHCPD6 In this section, you select an interface that DHCPD6 should listen on and create a configuration file. A default configuration file may already exist. Create a copy if you would like to keep the default configuration file. 1. Edit /etc/sysconfig/dhcpd and verify DHCPD6_INTERFACE is set to the network adapter you would like the DHCP server to listen on (Usually eth0 ). DHCPD6_INTERFACE= eth0 7. Click Next. 8. Click OK. 5

6 Enterprise Linux Best Practices White Paper SUSE Linux Enterprise Server 11 SP2 for UEFI Clients 2. Create /etc/dhcpd6.conf with the following contents: #dhcpd6.conf default-lease-time ; preferred-lifetime ; option dhcp-renewal-time 3600; option dhcp-rebinding-time 7200; allow leasequery; option dhcp6.name-servers fc00:ba49:1625:fb0f::1; option dhcp6.domain-search pxetest.org ; option dhcp6.info-refresh-time 21600; option dhcp6.bootfile-url code 59 = string; # The subnet where the server is attached # (i.e., the server has an address in this subnet) subnet6 fc00:ba49:1625:fb0f::/64 { option dhcp6.bootfile-url tftp://[fc00:ba49:1625:fb0f::137]/bootx64.efi ; } # Nine addresses available to clients # (the tenth client should get NoAddrsAvail) range6 fc00:ba49:1625:fb0f::42:10 fc00:ba49:1625:fb0f::42:99; # Use the whole /64 prefix for temporary addresses # (i.e., direct application of RFC 4941) range6 fc00:ba49:1625:fb0f:: temporary; Configure the EFI Linux Boot Loader (ELILO) In this section you will retrieve ELILO from the installation DVD and create a configuration file. 1. Place the first SUSE Linux Enterprise Server install DVD in your DVD drive. 2. Open a root terminal. 3. Create a temporary directory, mount the boot image and copy the contents. # mkdir /tmp/efi-img # mount t vfat /media/<name of disc>/boot/x86_64/efi /tmp/efi-img # cp /tmp/efi-img/efi/boot/* /tftpboot 6

7 4. Create /tftpboot/elilo.conf with the following contents: prompt timeout=50 delay=100 image=/linux label=suse initrd=/initrd append= install=ftp://fc00:ba49:1625:fb0f::137/sles sysrq=1 Copy Installation Files # cd /media/<name of disc> # mkdir /srv/ftp/sles # cp r * /srv/ftp/sles Start DHCPD6 Start DHCPD6 and make it start on boot. # service dhpcd6 start Shutting down ISC DHCPv6 4.x Server Starting ISC DHCPv6 4.x Server [chroot] # chkconfig dhcpd6 on done done Test the Setup on a Client 1. Connect an EFI machine to the network and turn it on. 2. Enter the Boot Option menu by pressing spacebar on startup. 3. Select Boot Manager from the menu. 4. Select EFI Network 1 to boot using IPv6. 5. At this point, you should see ELILO appear and prompt you to install SUSE Linux Enterprise Server. For more information. on remote installation of SUSE Linux Enterprise Server. via PXE, see the SUSE Linux Enterprise Server 11 SP2.Deployment Guide section Glossary Client The machine which will be getting bootstrap information over the network from the server..sometimes referred to as the target machine. DHCP Dynamic Host Configuration Protocol. One of the protocols that PXE requires to operate. ELILO The EFI Linux Boot Loader. FTP File Transfer Protocol. One of the protocols that PXE.requires to operate. PXE preboot execution environment. An environment that allows you to use a network interface to boot a computer.independent of a hard disk or operating system. PXE boot server The machine on which you set up the PXE. This machine hands out the bootstrap information to the client machines. TFTP Trivial File Transfer Protocol. One of the protocols that PXE requires to operate. UEFI Unified Extensible Firmware Interface. Managed by the Unified EFI forum, the UEFI sets specifications for the interface between an operating system and firmware. A replacement for the Basic Input/Output System (BIOS). 7

8 Contact your local SUSE Solutions Provider, or call SUSE at: U.S./Canada Worldwide SUSE Maxfeldstrasse Nuremberg Germany / SUSE. All rights reserved. SUSE, the SUSE logo and YaST are registered trademarks of Novell, Inc. in the United States and other countries. All third-party trademarks are the property of their respective owners.