# -*- mode: python; -*- #============================================================================ # Example Python setup script for Debian guest installation. #============================================================================ # # Standard options are configured as normal. Only a subset are included below. # See /usr/share/doc/xen-utils-common/examples for full examples. # # After standard options are configure use # xm create debian.cfg install=true" # to start the Debian Installer. # # In the installation case the following additional variables exist: # # COMMON OPTIONS # install-method: "cdrom" or "network" # install-arch: which architecture to install. e.g. i386 or amd64 # install-installer: URL or path to the Debian Installer bits. By # default for a network install these are located under # install-mirror. For a CDROM install the default is a fixed path on # the CD. # install-kernel, install-ramdisk: URL/path to the installer kernel and # ramdisk to use, by default these are located via install-installer. # install-extra: extra command line arguments # # CDROM SPECIFIC OPTIONS # install-media: Path to the Debian install media (i.e. an ISO) # install-cdrom-device: Name of the CD-ROM device within the guest. # # NETWORK SPECIFIC OPTIONS # install-suite: which Debian version to install. e.g. lenny, squeeze or sid # install-mirror: which Debian mirror to use # e.g. http://ftp.uk.debian.org/debian #============================================================================ #---------------------------------------------------------------------------- # Standard variables # Initial memory allocation (in megabytes) for the new domain. memory = 256 # A name for your domain. All domains must have different names. name = "ExampleDomain" # 128-bit UUID for the domain. The default behavior is to generate a new UUID # on each call to 'xm create'. #uuid = "06ed00fe-1162-4fc4-b5d8-11993ee4a8b9" # List of which CPUS this domain is allowed to use, default Xen picks #cpus = "" # leave to Xen to pick #cpus = "0" # all vcpus run on CPU0 #cpus = "0-3,5,^1" # run on cpus 0,2,3,5 # Number of Virtual CPUS to use, default is 1 #vcpus = 1 #---------------------------------------------------------------------------- # Define network interfaces. # By default, no network interfaces are configured. You may have one created # with sensible defaults using an empty vif clause: # # vif = [''] # # or optionally override backend, bridge, ip, mac, script, type, or vifname: # # vif = ['mac=00:16:3e:00:00:11, bridge=xenbr0'] # # or more than one interface may be configured: # # vif = ['', 'bridge=xenbr1'] vif = [''] #---------------------------------------------------------------------------- # Define the disk devices you want the domain to have access to, and # what you want them accessible as. # Each disk entry is of the form phy:UNAME,DEV,MODE # where UNAME is the device, DEV is the device name the domain will see, # and MODE is r for read-only, w for read-write. # # NB: Only xvd devices are supported by the kernel in Debian Lenny and later. disk = ['file:/path/to/disk.img,xvda,w'] #============================================================================ # Debian Installer specific variables def check_bool(name, value): value = str(value).lower() if value in ('t', 'tr', 'tru', 'true'): return True return False global var_check_with_default def var_check_with_default(default, var, val): if val: return val return default xm_vars.var('install', use='Install Debian, default: false', check=check_bool) xm_vars.var("install-method", use='Installation method to use "cdrom" or "network" (default: network)', check=lambda var, val: var_check_with_default('network', var, val)) # install-method == "network" xm_vars.var("install-mirror", use='Debian mirror to install from (default: http://ftp.debian.org/debian)', check=lambda var, val: var_check_with_default('http://ftp.debian.org/debian', var, val)) xm_vars.var("install-suite", use='Debian suite to install (default: unstable)', check=lambda var, val: var_check_with_default('unstable', var, val)) # install-method == "cdrom" xm_vars.var("install-media", use='Installation media to use (default: None)', check=lambda var, val: var_check_with_default(None, var, val)) xm_vars.var("install-cdrom-device", use='Installation media to use (default: xvdd)', check=lambda var, val: var_check_with_default('xvdd', var, val)) # Common options xm_vars.var("install-arch", use='Debian mirror to install from (default: hurd-i386)', check=lambda var, val: var_check_with_default('hurd-i386', var, val)) xm_vars.var("install-extra", use='Extra command line options (default: None)', check=lambda var, val: var_check_with_default(None, var, val)) xm_vars.var("install-installer", use='Debian installer to use (default: network uses install-mirror; cdrom uses /install.ARCH)', check=lambda var, val: var_check_with_default(None, var, val)) xm_vars.var("install-kernel", use='Debian installer kernel to use (default: uses install-installer)', check=lambda var, val: var_check_with_default(None, var, val)) xm_vars.var("install-ramdisk", use='Debian installer ramdisk to use (default: uses install-installer)', check=lambda var, val: var_check_with_default(None, var, val)) xm_vars.check() if not xm_vars.env.get('install'): bootloader="pygrub" elif xm_vars.env['install-method'] == "network": import os.path print "Install Mirror: %s" % xm_vars.env['install-mirror'] print "Install Suite: %s" % xm_vars.env['install-suite'] if xm_vars.env['install-installer']: installer = xm_vars.env['install-installer'] else: installer = xm_vars.env['install-mirror']+"/dists/"+xm_vars.env['install-suite'] + \ "/main/installer-"+xm_vars.env['install-arch']+"/current/images" print "Installer: %s" % installer print print "WARNING: Installer kernel and ramdisk are not authenticated." print if xm_vars.env.get('install-kernel'): kernelurl = xm_vars.env['install-kernel'] else: kernelurl = installer + "/netboot/xen/gnumach" if xm_vars.env.get('install-ramdisk'): ramdiskurl = xm_vars.env['install-ramdisk'] else: ramdiskurl = installer + "/netboot/xen/modules" import urllib class MyUrlOpener(urllib.FancyURLopener): def http_error_default(self, req, fp, code, msg, hdrs): raise IOError("%s %s" % (code, msg)) urlopener = MyUrlOpener() try: print "Fetching %s" % kernelurl kernel, _ = urlopener.retrieve(kernelurl) print "Fetching %s" % ramdiskurl ramdisk, _ = urlopener.retrieve(ramdiskurl) except IOError, _: raise elif xm_vars.env['install-method'] == "cdrom": arch_path = { 'i386': "/install.386", 'amd64': "/install.amd" } if xm_vars.env['install-media']: print "Install Media: %s" % xm_vars.env['install-media'] else: raise OptionError("No installation media given.") if xm_vars.env['install-installer']: installer = xm_vars.env['install-installer'] else: installer = arch_path[xm_vars.env['install-arch']] print "Installer: %s" % installer if xm_vars.env.get('install-kernel'): kernelpath = xm_vars.env['install-kernel'] else: kernelpath = installer + "/xen/gnumach" if xm_vars.env.get('install-ramdisk'): ramdiskpath = xm_vars.env['install-ramdisk'] else: ramdiskpath = installer + "/xen/modules" disk.insert(0, 'file:%s,%s:cdrom,r' % (xm_vars.env['install-media'], xm_vars.env['install-cdrom-device'])) bootloader="pygrub" bootargs="--kernel=%s --ramdisk=%s" % (kernelpath, ramdiskpath) print "From CD" else: print "WARNING: Unknown install-method: %s." % xm_vars.env['install-method'] if xm_vars.env.get('install'): # Figure out command line if xm_vars.env['install-extra']: extras=[xm_vars.env['install-extra']] else: extras=[] # Reboot will just restart the installer since this file is not # reparsed, so halt and restart that way. extras.append("-H") extras.append("root=gunzip:device:rd0") # TODO: actually inherit extras.append("TERM=ansi") extra = str.join(" ", extras) print "command line is \"%s\"" % extra