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Mon Apr 25 13:37:00 UTC 2011 Slackware 13.37 x86_64 stable is released! Thanks to everyone who pitched in on this release: the Slackware team, the folks producing upstream code, and linuxquestions.org for providing a great forum for collaboration and testing. The ISOs are off to be replicated, a 6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD. Please consider supporting the Slackware project by picking up a copy from store.slackware.com. We're taking pre-orders now, and offer a discount if you sign up for a subscription. As always, thanks to the Slackware community for testing, suggestions, and feedback. :-) Have fun!
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778 lines
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PXE: Installing Slackware over the network
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==========================================
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Introduction
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------------
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When the time comes to install Slackware on your computer, you have a
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limited number of options regarding the location of your Slackware
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packages. Either you install them from the (un)official Slackware CDROM or
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DVD, or you copy them to a pre-existing hard disk partition before starting
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the installation procedure, or you fetch the packages from a network server
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(using either NFS, HTTP or FTP protocol).
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The number of available options for booting your Slackware installer is
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similarly limited: either you boot your computer from the bootable first
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CDROM of the Slackware CD set, or from the DVD, or using a USB stick. There
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is even loadlin, the DOS based Linux starter, but lets not concern ourselves
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with the past today. Slackware 12.0 abandoned the floppy boot altogether.
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What if your PC is lacking a CDROM drive and refuses to boot from a USB
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stick? Brands of PCs are on the market today (ultra-portable laptops for
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instance) that are unable to install Slackware the traditional way. However,
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these machines are commonly equipped with network peripherals, like bluetooth,
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wireless and wired network cards. How to solve this dilemma? Buy an external
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CD drive?
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Well, there is another way of booting your computer that the Slackware
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installer supports. That is the 'network boot'. Network boot, or PXE boot,
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requires support from your computers network card and BIOS.
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Also, instead of installing packages from a Slackware CDROM set or DVD, you
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will need a network server that can instruct your computer how to fetch those
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packages from the network.
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In this README, I will show you how to perform an installation that uses
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the network as the carrier medium, with a server on the local network that
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holds the boot kernel and the root filesystem (which contains the setup
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program), and also has all the Slackware packages. This means, there is no
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need for a floppy or CDROM drive.
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Be warned: setting it all up is not trivial, and you need more than a
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beginners level of Linux knowledge, but this text and the accompanying
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example scripts in the last section should get you up and running even if
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you do not completely understand what is going on :-)
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PXE boot explained
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------------------
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The commonly used method of booting a computer over the network is
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called PXE or 'Preboot Execution Environment'. If you want your computer to
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boot using PXE, it needs a network card with PXE-capable firmware, and a
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BIOS that supports network boot. Most modern network cards (and computers)
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sold on the market today support this. When a computer boots from the
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network, it is the network card that downloads the bootloader, kernel and
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a filesystem - any Operating System that might already be installed on the
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computer will be untouched. You can just as well boot a diskless computer
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using PXE - in fact this is how Thin Clients and the Linux Terminal Server
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Project work.
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Of course, the other end of the network needs our attention, too. A
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PXE server needs to be available on the local network. The PXE firmware in
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your computers network card will contact this server in order to fetch some
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kind of bootable program code and bootstrap itself. What happens after the
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computer boots up has no longer anything to do with the PXE boot stage, it
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is the bootstrapping process were interested in.
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We will cover the requirements for such a server in one of the next
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paragraphs.
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The stages of a Slackware PXE install
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-------------------------------------
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The Slackware network installation process will be roughly as follows:
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(1) You start the computer that is going to receive Slackware
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(2) On startup, you make sure you select network boot in the BIOS startup -
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either by activating a custom startup sequence, or by entering a boot menu
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after pressing a function key like 'F12', or else by preselecting network
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boot as first option in the BIOS.
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(3) When the computer boots, the network card activates its PXE code and
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tries to contact a PXE server. When such a server exists on the LAN,
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it will tell the card where to download a piece of bootable code, an
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Operating System kernel (the Slackware Linux kernel) and an initial
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ramdisk (aka initrd - the compressed root-filesystem image where the
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setup program, libraries and kernel modules are stored).
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You will see a page full of mumbo-jumbo as the card broadcasts on the
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LAN, and probes for possible candidate configurations to download;
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(4) If a willing PXE server is found, your computer's network card will
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then download a kernel and initrd, boot the Linux kernel, unpack the
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initrd into a ramdisk and start the Slackware installer's initialization
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sequence.
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This is where you'll be in familiar territory again, since this is exactly
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what happens if you had booted from a CDROM or a floppy. But the fun is
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not over...
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Since we booted the computer using code that did not originate from our
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computer, we will have to fetch the remainder of the data - the Slackware
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packages - from the network as well. It's just that the freshly booted
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Linux kernel has no idea how it came to be running on the computer: you
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will have to initialize the network all over again. The network card's
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PXE firmware has done its job and is no longer in the picture. So:
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(5) We need to load a kernel driver for our network card and locate a network
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server that holds the Slackware package tree (called the "SOURCE").
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Currently, you can choose between installing from a NFS server, a Samba
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server or a HTTP/FTP server. By starting setup and selecting one of
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these network package SOURCEs, you will get the opportunity to configure
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the network card. If your network card is not supported by any of the
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available drivers, you are out of luck and will have to rethink your
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options.
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(6) From here on, installation proceeds as usual, under the condition that
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you select 'Install from NFS (Network File System)', 'Install from
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FTP/HTTP server' or 'Install from Samba share' as the source of the
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Slackware packages.
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Workstation requirements
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------------------------
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As stated before, the requirements for the computer you want to install
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Slackware on, are as follows:
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(1) Network card (non-wireless) with PXE firmware, supported by Slackware
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(2) PC BIOS allowing to select 'network boot'
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No other requirements have to be met for a network install, other than
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those you'd already have to meet in order to be able to install and run
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Slackware.
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Server requirements
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-------------------
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This is the interesting part (well in my opinion at least - many people
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consider this as a dark art). A PXE Server is really a mix of several
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components. We need:
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(1) A service that understands the BOOTP protocol. BOOTP is a network
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protocol somewhat like DHCP, and it is used by the PXE firmware to
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broadcast on the network its desire to find a suitable server to download
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the bootstrap code from. The DHCP Server packages that are part of
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Slackware fulfill this requirement, since they talk BOOTP as well as DHCP.
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These packages are 'dhcpd' and 'dnsmasq'; pick the one you like most.
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(2) A download service for the bootstrap code. A TFTP (trivial file
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transfer protocol) server is needed for this. Slackware ships with
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an implementation of a TFTP server called 'tftpd-hpa' which does what
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we need.
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(3) And for the Slackware installer, a NFS, HTTP, FTP or Samba server is
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required because we must perform a network install. We can use
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Slackware's stock NFS, HTTP, FTP or Samba server for this.
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Configuration of the BOOTP/DHCP/TFTP/NFS services
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--------------------------------------------------
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We'll look at how to set up the DHCP, TFTP and NFS services on a
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Slackware computer so that they work together as a PXE server. It is left as
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an excercise for the user to find out how to configure Apache (HTTP) or
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proftpd (FTP) in case installation over HTTP or FTP is preferred. In later
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examples, I will assume that the following URL's are valid for your HTTP/FTP
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server:
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http://192.168.0.1/mirror/slackware/slackware-13.37
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ftp://192.168.0.1/pub/mirror/slackware/slackware-13.37
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The server will run all required services, i.e. acts as the LANs
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DNS, DHCP, TFTP and NFS (or HTTP/FTP/Samba) server. If you decide to
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separate DHCP and TFTP services onto two different servers (it does not
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matter where the NFS/HTTP/FTP/Samba server runs), I have included information
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about what you should be aware of in the next section on DHCP.
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For ease of instruction, I will make a number of assumptions. These
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assumptions are reflected in IP addresses and address ranges that I use in
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my examples, in the names of directories, computers and network domains.
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This means that if you use the examples in this article, you should make
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certain that you replace all occurrences of these specifics with values
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that apply to your own network.
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(*) Our example network uses IP addresses in the range of 192.168.0.0 to
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192.168.0.254. This is equivalent to a network range 192.168.0.0/24 or
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192.168.0.0/255.255.255.0.
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(*) Our network server will have the IP address of 192.168.0.1 and the
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default gateway is 192.168.0.10. Server and gateway can be (but do not
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need to be) the same physical machine.
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(*) The IP address range that the DHCP server will use for leasing to
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DHCP/BOOTP enabled computers is 192.168.0.50 to 192.168.0.100.
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This leaves enough room to have lots of machines with fixed IP addresses,
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if you need them.
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(*) The DNS domain will be "my.lan".
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(*) Directories are used as follows:
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Top level of the complete Slackware 13.37 directory tree (excluding
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the source code if you're short on disk space) is
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"/mirror/slackware/slackware-13.37"
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(*) The directory where we store the boot files for the TFTP server is
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"/tftpboot/slackware-13.37"
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DHCP
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----
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You probably already have a DHCP server running on your network. You
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can try and modify its configuration so that it will do want we want, or if
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that is impossible (for instance because the DHCP server is running on your
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DSL/Cable router) you could consider disabling that and setting up a
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Slackware DHCP server for your LAN with much enhanced functionality.
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Slackware includes the ISC DHCP server package (dhcpd). Two example
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"/etc/dhcpd.conf" configuration files for this DHCP Server are included in the
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last section of the article.
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If you don't want to be bothered with fancy configurations but want a
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quick solution that will just work for your network, use the first (simple)
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example /etc/dhcpd.conf configuration file as well as the provided
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/etc/rc.d/rc.dhcpd start script and you'll be up and running in minutes.
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It requires no editing of files, the examples will work out of the box.
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If you know what you're doing and understand (more or less) how the
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DHCP server works, you can have a look at the second, more complex,
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/etc/dhcpd.conf example which has more features and offers control over
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what computers are allowed to do a network boot.
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The rest of this chapter deals with the setup of a complex DHCP
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configuration.
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By default, we should not allow network boots in our network (which is
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safer of course - imagine a computer that does an un-intended network boot
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and suddenly finds itself running the Slackware installer!). In the
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/etc/dhcpd.conf configuration file, we add a 'group' section were we can add
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those computers that we allow as network boot clients; the typical host
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statement for a computer looks like this
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host t43 {
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hardware ethernet 00:12:34:56:78:9a;
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fixed-address 192.168.0.3;
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}
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Nothing spectacular; a computer is defined by the network card's
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hardware address (MAC address) and we instruct the DHCP Server to always
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assign it the same IP address. The boot-specific parameters are all contained
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in the 'group' block and look like this:
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group {
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allow bootp;
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next-server 192.168.0.1;
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use-host-decl-names on;
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if substring (option vendor-class-identifier, 0, 9) = "PXEClient" {
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filename "/slackware-13.37/pxelinux.0";
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}
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host ABC {
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.....
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}
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host XYZ {
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.....
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}
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}
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This enables the DHCP server to detect network boot clients that use PXE
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and serves them the PXElinux boot loader we make available at
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"/slackware-13.37/pxelinux.0". What this boot loader does will be explained
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further down the article.
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The 'next-server' parameter contains the IP address of the TFTP server.
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This will often be identical to the DHCP server's IP address, but if you
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have a TFTP server that is running on a different IP address than the DHCP
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server (i.e. they run on separate servers) you will have to add the remote
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IP address instead, like this (assuming the TFTP server is running on IP
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address 192.168.0.254):
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next-server 192.168.0.254;
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If you are running a version of the 'ISC' dhcpd program that is >= 3.0.3,
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then the addition of a "next-server <ipaddress>;" line is mandatory. For older
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releases this was only needed if the TFTP and DHCP Servers actually had
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different addresses.
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If you fail to set the 'next-server' address, the 'siaddr' field in the
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data returned to the client is set to zero where in the past it would
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default to the DHCP server's own IP address (which often happened to be the
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IP address of the TFTP server as well). The PXE client uses the 'siaddr'
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field to determine the IP address of the TFTP server and so the PXE booting
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will stall at the point of looking for a TFTP server.
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If you are already using 'dnsmasq' as your DNS/DHCP server, then the
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above instructions for the ISC DHCP server are not applicable to your
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setup. Instead, you have to configure dnsmasq with this equivalent parameter:
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dnsmasq --dhcp-boot=/slackware-13.37/pxelinux.0,"192.168.0.1",192.168.0.1
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or add this line to your /etc/dnsmasq.conf:
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dhcp-boot=/slackware-13.37/pxelinux.0,"192.168.0.1",192.168.0.1
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The IP address "192.168.0.1" occurs twice; they should always be identical,
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and be the address of your TFTP server.
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TFTP
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----
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The tftpd service is managed by inetd. Enable the line for tftpd in
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the file "/etc/inetd.conf" by removing the comment character at the beginning
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of the line:
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tftp dgram udp wait root /usr/sbin/in.tftpd in.tftpd -v -s /tftpboot -r blksize
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and reload inetd:
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/etc/rc.d/rc.inetd restart
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We need to create the directory /tftpboot which will hold the bootstrap
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files that tftpd will serve:
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mkdir /tftpboot
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This directory is the root of a secure jail (the -s /tftpboot parameter
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in /etc/inetd.conf). The tftpd service is now configured and running. We
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just need to populate its root directory, but I"ll keep that for another
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paragraph.
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As an alternative to in.tftpd, you may want to use the built-in tftp server
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of dnsmasq. If you are already using dnsmasq as your DHCP server, this would
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make sense.
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Add the two following commandline parameters to your dnsmasq commandline:
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--enable-tftp --tftp-root=/tftpboot
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or add the following two lines to your /etc/dnsmasq.conf file:
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enable-tftp
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tftp-root=/tftpboot
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NFS
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---
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You need to export the directory where you keep your local copy of the
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Slackware packages, for instance by adding this to /etc/exports:
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/mirror/slackware 192.168.0.0/24(ro,sync,insecure,all_squash,subtree_check)
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If your Slackware packages are located somewhere below /mirror/slackware
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(like in our example network), the above line makes this directory tree
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available (read-only) to NFS clients in the local network defined by the IP
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address range 192.168.0.0/24.
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If you had to add this line to your /etc/exports file, you will need to
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restart the NFS server:
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/etc/rc.d/rc.nfsd restart
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For simplicity's sake:
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The remainder of this chapter is a bullet list of the steps required if you
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just want to have this working and have no prior experience with NFS nor have
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such a server running at the moment (remember that any pathnames/IP addresses
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that are used here apply to our example network - adjust as needed):
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(*) Create a file named /etc/exports with the following content:
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/mirror/slackware 192.168.0.0/24(ro,sync,insecure,all_squash)
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(*) The directory mentioned in /etc/exports is the target where
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you copy (or move) your Slackware files to: The directory
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"/mirror/slackware/slackware-13.37" should be the root of the Slackware
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tree, containing such files as ChangeLog.txt and subdirectories like
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"slackware" (or "slackware64" if you are working with the 64bit port)
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and "kernels".
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(*) Make the NFS server startup script executable so that the NFS server
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will start on every boot:
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chmod +x /etc/rc.d/rc.nfsd
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Start the NFS server (so you don't have to reboot already):
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/etc/rc.d/rc.nfsd start
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PXELinux configuration
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----------------------
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The previous paragraph described in generic terms how to setup the TFTP
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service, but it did not tell you how to populate the TFTP directory structure.
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Network clients that request boot files from the TFTP server will receive
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the files that are present in this directory structure.
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PXELinux is much like isolinux, which is the bootloader that is used
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for the bootable Slackware CDROM #1. In fact, both programs are written by
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the same author and are available in Slackware via the syslinux package.
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The tftp directory structure:
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As you can see in the DHCP section, the DHCP server has been configured
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to offer any interested PXE client (i.e. your computers network card) the
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file "/slackware-13.37/pxelinux.0" - this file contains the bootable code
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that first downloads and starts a Linux kernel, and then downloads and
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extracts the root filesystem containing the setup program and everything
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else that we need. This filename "/slackware-13.37/pxelinux.0" indicates
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a pathname relative to the root of the TFTP server. The PXE client will
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use the tftp protocol to fetch this bootloader. So this is what we do:
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create this directory "slackware-13.37" and copy the required files into it.
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First, the pxelinux bootloader itself:
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mkdir /tftpboot/slackware-13.37
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mkdir /tftpboot/slackware-13.37/pxelinux.cfg
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cp /usr/share/syslinux/pxelinux.0 /tftpboot/slackware-13.37/
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Also, we need the files from the Slackware CDROM that show the
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informative messages in the beginning. Assuming your local copy of the
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Slackware release can be found in "/mirror/slackware/slackware-13.37"
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(change paths in the below commands if your location is different) :
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cp /mirror/slackware/slackware-13.37/isolinux/message.txt /tftpboot/slackware-13.37/
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cp /mirror/slackware/slackware-13.37/isolinux/f2.txt /tftpboot/slackware-13.37/
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Very important: we need the initial ramdisk image (initrd.img) and the pxelinux configuration file that contains the instructions for the PXE clients:
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cp /mirror/slackware/slackware-13.37/isolinux/initrd.img /tftpboot/slackware-13.37/
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cp /mirror/slackware/slackware-13.37/usb-and-pxe-installers/pxelinux.cfg_default /tftpboot/slackware-13.37/pxelinux.cfg/default
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And lastly, we need all the kernels that the Slackware installer lets you
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choose from:
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cp -a /mirror/slackware/slackware-13.37/kernels /tftpboot/slackware-13.37/
|
|
|
|
|
|
Trying it out
|
|
-------------
|
|
|
|
You now have a fully configured PXE server. Try it out! Take a
|
|
computer that is able to do a network boot, start it, and watch it go
|
|
through the motions of contacting the PXE server, downloading the PXE boot
|
|
code and presenting you with the familiar Slackware installation screen!
|
|
From there on you're on familiar grounds: choose a kernel, and off you go.
|
|
|
|
If you're not familiar with network installations, here are some hints:
|
|
|
|
The installer uses UDEV to load the required driver(s) for your network
|
|
card. You can login as root, use (c)fdisk to create your partitions and
|
|
start 'setup'. By the time you get to the point where you select your
|
|
preferred method of network installation, the installer will ask you to
|
|
supply network configuration parameters (IP address, netmask, gateway).
|
|
If a DHCP server was found on your local network, you will have the
|
|
alternative option to use DHCP and automatically configure the interface.
|
|
|
|
====================================================================
|
|
If for whatever reason you do not want to use UDEV, you can pass
|
|
the parameter 'noudev' at the boot commandline. This will cause the
|
|
installer to fallback to the old behaviour where you have to load the
|
|
kernel driver for your network card yourself. You do have to run
|
|
the command 'network' which is the interactive program that allows
|
|
you to pick a driver or let Slackware probe the card and load the
|
|
correct driver. You can press 'L' to get a listing of all available
|
|
network drivers that you can select from (not all of them will be used
|
|
in the automatic probe). If the network program fails to detect the
|
|
card, and you know what driver your card needs but don't see it listed,
|
|
you're out of luck! If you forget to run the 'network' program before
|
|
you start 'setup', the network configuration dialog will run it when
|
|
the time comes, so that you do not have to start all over.
|
|
====================================================================
|
|
|
|
Once you get to the SOURCE dialog, you can select either 'Install from NFS
|
|
(Network File System)', 'Install from FTP/HTTP server' or 'Install from
|
|
a Samba share' depending on which of those you have confgured for use
|
|
and have available. You will need to supply a couple of values for IP
|
|
Addresses and the network server directory.
|
|
|
|
As a first exercise, here are values to use with a NFS server (for our
|
|
example network):
|
|
|
|
Your IP Address (pick any unused): 192.168.0.111
|
|
Your netmask: 255.255.255.0
|
|
The gateway: 192.168.0.10
|
|
NFS server address: 192.168.0.1
|
|
Slackware directory on NFS server: /mirror/slackware/slackware-13.37/slackware
|
|
|
|
Next, some values to use with a FTP server (for our example network):
|
|
|
|
Your IP Address (pick any unused): 192.168.0.111
|
|
Your netmask: 255.255.255.0
|
|
The gateway: 192.168.0.10
|
|
FTP server address: ftp://192.168.0.1
|
|
Slackware directory on ftpserver: /pub/mirror/slackware/slackware-13.37
|
|
|
|
Next, example values to use with a HTTP server (for our example network):
|
|
|
|
Your IP Address (pick any unused): 192.168.0.111
|
|
Your netmask: 255.255.255.0
|
|
The gateway: 192.168.0.10
|
|
HTTP server address: http://192.168.0.1
|
|
Slackware directory on webserver: /mirror/slackware/slackware-13.37
|
|
|
|
Finally, example values to use with a Samba share (for our example network):
|
|
|
|
Your IP Address (pick any unused): 192.168.0.111
|
|
Your netmask: 255.255.255.0
|
|
The gateway: 192.168.0.10
|
|
Samba share: //192.168.0.1/mirror
|
|
Slackware directory on webserver: /slackware/slackware-13.37
|
|
|
|
Note #1 - if you chose automatic network configuration using DHCP in an
|
|
earlier step, you can probably use actual hostnames instead of IP addresses.
|
|
This will depend on your LAN setup; if DHCP and DNS services are correctly
|
|
configured, every network host will have a hostname that resolves to it's
|
|
IP address.
|
|
|
|
Note #2 - in the case of the NFS server, you will have to supply the
|
|
path to the Slackware package tree _including_ the '/slackware' subdirectory.
|
|
For HTTP and FTP servers, it is sufficient to supply the root of the
|
|
slackware-13.37 tree and leave the 'slackware' subdirectory out. The installer
|
|
will figure out where the packages are.
|
|
|
|
From this point onwards, the installation proceeds just as when the
|
|
SOURCE would have been a CDROM.
|
|
|
|
Good luck!
|
|
Eric Hameleers.
|
|
|
|
|
|
Example configuration scripts
|
|
-----------------------------
|
|
|
|
|
|
First example "/etc/dhcpd.conf"
|
|
-------------------------------
|
|
|
|
A simple /etc/dhcpd.conf for your DHCP Server where all computers are allowed
|
|
to boot from the network using PXE.
|
|
|
|
# dhcpd.conf
|
|
#
|
|
# Configuration file for ISC dhcpd
|
|
#
|
|
# If this DHCP server is the official DHCP server for the local
|
|
# network, the authoritative directive should be uncommented.
|
|
authoritative;
|
|
ddns-update-style none;
|
|
|
|
# Allow bootp requests
|
|
allow bootp;
|
|
|
|
# Point to the TFTP server:
|
|
next-server 192.168.0.1;
|
|
|
|
# Default lease is 1 week (604800 sec.)
|
|
default-lease-time 604800;
|
|
# Max lease is 4 weeks (2419200 sec.)
|
|
max-lease-time 2419200;
|
|
|
|
subnet 192.168.0.0 netmask 255.255.255.0 {
|
|
option domain-name "my.lan";
|
|
option broadcast-address 192.168.0.255;
|
|
option subnet-mask 255.255.255.0;
|
|
option domain-name-servers 192.168.0.1;
|
|
option routers 192.168.0.10;
|
|
range dynamic-bootp 192.168.0.50 192.168.0.100;
|
|
use-host-decl-names on;
|
|
if substring (option vendor-class-identifier, 0, 9) = "PXEClient" {
|
|
filename "/slackware-13.37/pxelinux.0";
|
|
}
|
|
}
|
|
|
|
|
|
Second example "/etc/dhcpd.conf:
|
|
--------------------------------
|
|
|
|
A more advanced /etc/dhcpd.conf file for your DHCP server where you can
|
|
specify exactly which computers are allowed to boot from the network using
|
|
PXE (but you will have to collect their MAC addresses yourself and put them
|
|
into separate host{} entries):
|
|
|
|
# dhcpd.conf
|
|
#
|
|
# Configuration file for ISC dhcpd
|
|
#
|
|
|
|
# If this DHCP server is the official DHCP server for the local
|
|
# network, the authoritative directive should be uncommented.
|
|
authoritative;
|
|
ddns-update-style none;
|
|
|
|
# Ignore bootp requests:
|
|
ignore bootp;
|
|
|
|
# option definitions common to all configured networks...
|
|
option domain-name-servers 192.168.0.1;
|
|
|
|
subnet 192.168.0.0 netmask 255.255.255.0 {
|
|
option domain-name "my.lan";
|
|
option broadcast-address 192.168.0.255;
|
|
option subnet-mask 255.255.255.0;
|
|
option routers 192.168.0.10;
|
|
# We reserve the range 192.168.0.1 to 192.168.0.49 for static IP addresses
|
|
pool {
|
|
# Known clients (i.e. configured with a 'host' statement)
|
|
# that request an IP address via DHCP
|
|
range 192.168.0.50 192.168.0.100;
|
|
# Default lease is 1 week (604800 sec.)
|
|
default-lease-time 604800;
|
|
# Max lease is 4 weeks (2419200 sec.)
|
|
max-lease-time 2419200;
|
|
deny unknown clients;
|
|
}
|
|
pool {
|
|
# Guests
|
|
range 192.168.0.150 192.168.0.200;
|
|
# Default lease is 8 hours (28800 sec.)
|
|
default-lease-time 28800;
|
|
# Max lease is 24 hours (86400 sec.)
|
|
max-lease-time 86400;
|
|
deny known clients;
|
|
}
|
|
}
|
|
|
|
# Hosts which require special configuration options can be listed in
|
|
# host statements. If no address is specified, the address will be
|
|
# allocated dynamically (if possible), but the host-specific information
|
|
# will still come from the host declaration.
|
|
|
|
# Fixed IP addresses can also be specified for hosts. These addresses
|
|
# should not also be listed as being available for dynamic assignment.
|
|
# Hosts for which fixed IP addresses have been specified can boot using
|
|
# BOOTP or DHCP. Hosts for which no fixed address is specified can only
|
|
# be booted with DHCP, unless there is an address range on the subnet
|
|
# to which a BOOTP client is connected which has the dynamic-bootp flag
|
|
# set.
|
|
|
|
# === Group definitions =============================================
|
|
# Define groups of computers that you want to give special attention.
|
|
|
|
group {
|
|
# Non-PXE machines
|
|
|
|
# Default lease is 1 week (604800 sec.)
|
|
default-lease-time 604800;
|
|
# Max lease is 2 weeks (1209600 sec.)
|
|
max-lease-time 1209600;
|
|
|
|
#host penguin {
|
|
# hardware ethernet xx:xx:xx:xx:xx:xx;
|
|
# fixed-address 192.168.0.2;
|
|
#}
|
|
}
|
|
|
|
group {
|
|
# PXEboot
|
|
|
|
# Default lease is 1 day (86400 sec.)
|
|
default-lease-time 86400;
|
|
# Max lease is 2 days (172800 sec.)
|
|
max-lease-time 172800;
|
|
|
|
# Allow bootp requests for this group:
|
|
allow bootp;
|
|
|
|
# Point to the TFTP server (required parameter!):
|
|
next-server 192.168.0.1;
|
|
|
|
# If you want to log the boot process, you will need to configure
|
|
# your logserver to allow logging from remote hosts.
|
|
#option log-servers 192.168.0.1;
|
|
|
|
use-host-decl-names on;
|
|
|
|
if substring (option vendor-class-identifier, 0, 9) = "PXEClient" {
|
|
filename "/slackware-13.37/pxelinux.0";
|
|
}
|
|
else if substring (option vendor-class-identifier, 0, 9) = "Etherboot" {
|
|
filename "/slackware-13.37/kernels/hugesmp.s/bzImage";
|
|
}
|
|
|
|
host t43 {
|
|
# Add your computer's MAC Address here:
|
|
hardware ethernet yy:yy:yy:yy:yy:yy;
|
|
fixed-address 192.168.0.3;
|
|
}
|
|
} # end of PXEboot group
|
|
|
|
|
|
RC script for DHCP
|
|
------------------
|
|
|
|
A Slackware start/stop script for the DHCP server that you can save as
|
|
"/etc/rc.d/rc.dhcpd".
|
|
|
|
Don't forget to make the script executable:
|
|
|
|
chmod +x /etc/rc.d/rc.dhcpd
|
|
|
|
You can add the following lines to /etc/rc.d/rc.local so that the DHCP
|
|
service starts when your server boots:
|
|
|
|
if [ -x /etc/rc.d/rc.dhcpd ]; then
|
|
# Start the DHCP server:
|
|
/etc/rc.d/rc.dhcpd start
|
|
fi
|
|
|
|
This is the content of the file "/etc/rc.d/rc.dhcpd":
|
|
|
|
#!/bin/sh
|
|
#
|
|
# /etc/rc.d/rc.dhcpd
|
|
# This shell script takes care of starting and stopping
|
|
# the ISC DHCPD service
|
|
#
|
|
|
|
# Put the command line options here that you want to pass to dhcpd:
|
|
DHCPD_OPTIONS="-q eth0"
|
|
|
|
[ -x /usr/sbin/dhcpd ] || exit 0
|
|
|
|
[ -f /etc/dhcpd.conf ] || exit 0
|
|
|
|
start() {
|
|
# Start daemons.
|
|
echo -n "Starting dhcpd: /usr/sbin/dhcpd $DHCPD_OPTIONS "
|
|
/usr/sbin/dhcpd $DHCPD_OPTIONS
|
|
echo
|
|
}
|
|
stop() {
|
|
# Stop daemons.
|
|
echo -n "Shutting down dhcpd: "
|
|
killall -TERM dhcpd
|
|
echo
|
|
}
|
|
status() {
|
|
PIDS=$(pidof dhcpd)
|
|
if [ "$PIDS" == "" ]; then
|
|
echo "dhcpd is not running!"
|
|
else
|
|
echo "dhcpd is running at pid(s) ${PIDS}."
|
|
fi
|
|
}
|
|
restart() {
|
|
stop
|
|
start
|
|
}
|
|
|
|
# See how we were called.
|
|
case "$1" in
|
|
start)
|
|
start
|
|
;;
|
|
stop)
|
|
stop
|
|
;;
|
|
restart)
|
|
stop
|
|
start
|
|
;;
|
|
status)
|
|
status
|
|
;;
|
|
*)
|
|
echo "Usage: $0 {start|stop|status|restart}"
|
|
;;
|
|
esac
|
|
|
|
exit 0
|
|
|
|
|
|
========================================================
|
|
Author:
|
|
Eric Hameleers <alien@slackware.com> 21-mar-2011
|
|
Wiki URLs:
|
|
http://www.slackware.com/~alien/dokuwiki/doku.php?id=slackware:pxe
|