Works, more or less.
This commit is contained in:
Bob Lantz
+121
-89
@@ -32,7 +32,6 @@ from stat import ST_MODE
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from os.path import abspath
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from sys import exit, argv
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from glob import glob
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from urllib import urlretrieve
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from subprocess import check_output, call, Popen
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from tempfile import mkdtemp
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from time import time, strftime, localtime
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@@ -117,15 +116,9 @@ def findiso( flavor ):
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url = isoURLs[ flavor ]
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name = path.basename( url )
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iso = path.join( VMImageDir, name )
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if path.exists( iso ):
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# Detect race condition with multiple builds
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perms = stat( iso )[ ST_MODE ] & 0777
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if perms != 0444:
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raise Exception( 'Error - %s is writable ' % iso +
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'; are multiple builds running?' )
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else:
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if not path.exists( iso ) or ( stat( iso )[ ST_MODE ] & 0777 != 0444 ):
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log( '* Retrieving', url )
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urlretrieve( url, iso )
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run( 'curl -C - -o %s %s' % ( iso, url ) )
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# Write-protect iso, signaling it is complete
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log( '* Write-protecting iso', iso)
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os.chmod( iso, 0444 )
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@@ -156,30 +149,30 @@ def detachNBD( nbd ):
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srun( 'qemu-nbd -d ' + nbd )
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def kernelpath( flavor ):
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"Return kernel path for flavor"
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return path.join( VMImageDir, flavor + '-vmlinuz' )
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def extractKernel( image, kernel ):
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def extractKernel( image, flavor ):
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"Extract kernel from base image"
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nbd = attachNBD( image )
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kernel = path.join( VMImageDir, flavor + '-vmlinuz' )
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if path.exists( kernel ) and ( stat( image )[ ST_MODE ] & 0777 ) == 0444:
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return kernel
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log( '* Extracting kernel to', kernel )
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nbd = attachNBD( image, flags='-r' )
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print srun( 'partx ' + nbd )
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# Assume kernel is in partition 1/boot/vmlinuz*generic for now
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part = nbd + 'p1'
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mnt = mkdtemp()
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srun( 'mount %s %s' % ( part, mnt ) )
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kernsrc = glob( '%s/boot/vmlinuz*generic' % mnt )[ 0 ]
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run( 'cp %s %s' % ( kernsrc, kernel ) )
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run( 'sudo cp %s %s' % ( kernsrc, kernel ) )
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run( 'sudo chmod 0444 ' + kernel )
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srun( 'umount ' + mnt )
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run( 'rmdir ' + mnt )
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detachNBD( image )
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detachNBD( nbd )
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return kernel
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def findBaseImage( flavor, size='8G' ):
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"Return base VM image and kernel, creating them if needed"
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image = path.join( VMImageDir, flavor + '-base.img' )
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kernel = path.join( VMImageDir, flavor + '-vmlinuz' )
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if path.exists( image ):
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# Detect race condition with multiple builds
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perms = stat( image )[ ST_MODE ] & 0777
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@@ -193,79 +186,104 @@ def findBaseImage( flavor, size='8G' ):
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log( '* Creating image file', image )
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run( 'qemu-img create %s %s' % ( image, size ) )
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installUbuntu( iso, image )
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log( '* Extracting kernel to', kernel )
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extractKernel( image, kernel )
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# Write-protect image, also signaling it is complete
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log( '* Write-protecting image', image)
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os.chmod( image, 0444 )
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log( '* Using base image', image )
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kernel = extractKernel( image, flavor )
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log( '* Using base image', image, 'and kernel', kernel )
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return image, kernel
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# Kickstart and Preseed files for Ubuntu/Debian installer
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#
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# Comments: this is really clunky and painful. If Ubuntu
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# gets their act together and supports kickstart a bit better
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# then we can get rid of preseed and even use this as a
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# Fedora installer as well.
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#
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# Another annoying thing about Ubuntu is that it can't just
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# install a normal system from the iso - it has to download
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# junk from the internet, making this house of cards even
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# more precarious.
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KickstartText ="""
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#Generated by Kickstart Configurator
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#platform=x86
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#System language
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lang en_US
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#Language modules to install
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langsupport en_US
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#System keyboard
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keyboard us
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#System mouse
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mouse
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#System timezone
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timezone America/Los_Angeles
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#Root password
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rootpw --disabled
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#Initial user
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user mininet --fullname "mininet" --password "mininet"
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#Use text mode install
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text
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#Install OS instead of upgrade
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install
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#Use CDROM installation media
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cdrom
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#System bootloader configuration
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bootloader --location=mbr
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#Clear the Master Boot Record
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zerombr yes
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#Partition clearing information
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clearpart --all --initlabel
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#Automatic partitioning
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autopart
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#System authorization infomation
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auth --useshadow --enablemd5
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#Firewall configuration
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firewall --disabled
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#Do not configure the X Window System
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skipx
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"""
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# Tell the Ubuntu/Debian installer to stop asking stupid questions
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PreseedText = """
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d-i mirror/country string manual
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d-i mirror/http/hostname string mirrors.kernel.org
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d-i mirror/http/directory string /ubuntu
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d-i mirror/http/proxy string
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d-i partman/confirm_write_new_label boolean true
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d-i partman/choose_partition select finish
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d-i partman/confirm boolean true
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d-i partman/confirm_nooverwrite boolean true
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d-i user-setup/allow-password-weak boolean true
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d-i finish-install/reboot_in_progress note
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d-i debian-installer/exit/poweroff boolean true
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"""
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def makeKickstartFloppy():
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"Create and return kickstart floppy, kickstart, preseed"
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kickstart = 'ks.cfg'
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kstext = '\n'.join( [ '#Generated by Kickstart Configurator',
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'#platform=x86',
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'#System language',
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'lang en_US',
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'#Language modules to install',
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'langsupport en_US',
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'#System keyboard',
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'keyboard us',
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'#System mouse',
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'mouse',
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'#System timezone',
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'timezone America/Los_Angeles',
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'#Root password',
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'rootpw --disabled',
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'#Initial user'
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'user mininet --fullname "mininet" --password "mininet"',
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'#Use text mode install',
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'text',
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'#Install OS instead of upgrade',
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'install',
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'#Use CDROM installation media',
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'cdrom',
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'#System bootloader configuration',
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'bootloader --location=mbr',
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'#Clear the Master Boot Record',
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'zerombr yes',
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'#Partition clearing information',
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'clearpart --all --initlabel',
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'#Automatic partitioning',
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'autopart',
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'#System authorization infomation',
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'auth --useshadow --enablemd5',
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'#Firewall configuration',
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'firewall --disabled',
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'#Do not configure the X Window System',
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'skipx', '' ] )
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with open( kickstart, 'w' ) as f:
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f.write( kstext )
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f.write( KickstartText )
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preseed = 'ks.preseed'
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pstext = '\n'.join( [ 'd-i partman/confirm_write_new_label boolean true',
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'd-i partman/choose_partition select finish',
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'd-i partman/confirm boolean true',
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'd-i partman/confirm_nooverwrite boolean true',
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'd-i user-setup/allow-password-weak boolean true' ] )
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with open( preseed, 'w' ) as f:
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f.write( pstext )
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f.write( PreseedText )
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# Create floppy and copy files to it
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floppy = 'ksfloppy.img'
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run( 'qemu-img create %s 1M' % floppy )
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run( 'qemu-img create %s 1440k' % floppy )
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run( 'mkfs -t msdos ' + floppy )
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run( 'mcopy -i %s %s ::/' % ( floppy, kickstart ) )
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run( 'mcopy -i %s %s ::/' % ( floppy, preseed ) )
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log( '* Created floppy image %s containing %s and %s' %
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( floppy, kickstart, preseed ) )
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return floppy, kickstart, preseed
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def kvmFor( name ):
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"Guess kvm version for file name"
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if 'amd64' in name:
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if '64' in name:
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kvm = 'qemu-system-x86_64'
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elif 'i386' in name:
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elif 'i386' in name or '32' in name:
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kvm = 'qemu-system-i386'
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else:
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log( "Error: can't discern CPU for file name", name )
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@@ -273,36 +291,49 @@ def kvmFor( name ):
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return kvm
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def installUbuntu( iso, image ):
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def installUbuntu( iso, image, logfilename='install.log' ):
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"Install Ubuntu from iso onto image"
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global pexpect
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import pexpect
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kvm = kvmFor( iso )
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floppy, kickstart, preseed = makeKickstartFloppy()
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# Mount iso so we can use its kernel
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mnt = mkdtemp()
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srun( 'mount %s %s' % ( iso, mnt ) )
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kernel = mnt + 'install/vmlinuz'
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srun( 'ls ' + mnt )
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kernel = path.join( mnt, 'install/vmlinuz' )
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initrd = path.join( mnt, 'install/initrd.gz' )
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cmd = [ 'sudo', kvm,
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'-machine accel=kvm',
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'-machine', 'accel=kvm',
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'-nographic',
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'-netdev user,id=mnbuild',
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'-device virtio-net,netdev=mnbuild',
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'-m 1024',
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'-k en-us',
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'-cdrom', iso,
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'-drive file=%s,if=virtio' % image,
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'-netdev', 'user,id=mnbuild',
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'-device', 'virtio-net,netdev=mnbuild',
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'-m', '1024',
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'-k', 'en-us',
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'-fda', floppy,
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'-drive', 'file=%s,if=virtio' % image,
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'-cdrom', iso,
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'-kernel', kernel,
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'-append "root=/dev/vda1 init=/sbin/init console=ttyS0' +
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'ks=floppy:/' + kickstart +
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'preseed/file=floppy://' + preseed + '"' ]
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cmd = ' '.join( cmd )
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'-initrd', initrd,
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'-append',
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' ks=floppy:/' + kickstart +
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' preseed/file=floppy://' + preseed +
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' console=ttyS0' ]
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ubuntuStart = time()
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log( '* INSTALLING UBUNTU FROM', iso, 'ONTO', image )
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log( cmd )
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run( cmd )
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log( ' '.join( cmd ) )
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log( '* logging to', abspath( logfilename ) )
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logfile = open( logfilename, 'w' )
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vm = Popen( cmd, stdout=logfile, stderr=logfile )
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log( '* Waiting for installation to complete')
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vm.wait()
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logfile.close()
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elapsed = time() - ubuntuStart
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# Unmount iso and clean up
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srun( 'umount ' + mnt )
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run( 'rmdir ' + mnt )
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log( '* UBUNTU INSTALLATION COMPLETED FOR', image )
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log( '* Ubuntu installation completed in %.2f seconds ' % elapsed )
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def boot( cow, kernel, logfile ):
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@@ -356,6 +387,8 @@ def interact( vm ):
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vm.expect( prompt )
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log( '* Running VM install script' )
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vm.sendline( 'bash install-mininet-vm.sh' )
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vm.expect ( 'password for mininet: ' )
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vm.sendline( 'mininet' )
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log( '* Waiting for script to complete... ' )
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# Gigantic timeout for now ;-(
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vm.expect( 'Done preparing Mininet', timeout=3600 )
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@@ -380,7 +413,7 @@ def interact( vm ):
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vm.sendline( 'sync; sudo shutdown -h now' )
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log( '* Waiting for EOF/shutdown' )
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vm.read()
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log( '* Interaction complete' )
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log( '* Interaction complete' )
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def cleanup():
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@@ -412,14 +445,13 @@ def build( flavor='raring32server' ):
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vm = boot( volume, kernel, logfile )
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interact( vm )
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vmdk = convert( volume, basename=flavor )
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log( '* Converted VM image stored as', vmdk )
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log( '* Converted VM image stored as', abspath( vmdk ) )
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end = time()
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elapsed = end - start
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log( '* Results logged to', abspath( logfile.name ) )
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log( '* Completed in %.2f seconds' % elapsed )
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log( '* %s VM build DONE!!!!! :D' % flavor )
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log( '* ' )
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os.chdir( '..' )
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os.chdir( '..' )
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def listFlavors():
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