automating vmware guest deployment with capistrano

This will get some more work, but I didn’t find much out there so this is a good starting point for someone

It appears straightforward enough, but feel free to ask any questions. You’ll need the rest of your operations platform pre-built, such as existing vmware hosts, pxe booting a debian install, etc.

I don’t think blogger is killing anything important. Some day I’ll setup an actual repository instead of using blogger for this crap. On the new server, next vacation.

# Capistrano recipe to build a vmware guest# Bryan McLellan -- bryanm@widemile.com

require 'erb'

logger.info("Vmware guest creation script logs in as root")set(:user, "root")

vmxtemplate = %q{#!/usr/bin/vmwareconfig.version = "8"virtualHW.version = "4"scsi0.present = "TRUE"scsi0.virtualDev = "<%=disktype %>"scsi0:0.present = "TRUE"scsi0:0.redo = ""priority.grabbed = "normal"priority.ungrabbed = "normal"guestOS = "other26xlinux-64"ide1:0.startConnected = "FALSE"floppy0.startConnected = "FALSE"

displayName = "<%=fqdn %>"scsi0:0.fileName = "<%=fqdn %>.vmdk"memsize = "<%=memory %>"

Ethernet0.present = "TRUE"Ethernet0.virtualDev = "e1000"ethernet0.addressType = "generated"ethernet0.generatedAddressOffset = "0"Ethernet0.connectionType = "custom"Ethernet0.vnet = "<%=eth0 %>"

Ethernet1.present = "TRUE"Ethernet1.virtualDev = "e1000"ethernet1.addressType = "generated"ethernet1.generatedAddressOffset = "10"Ethernet1.connectionType = "custom"Ethernet1.vnet = "<%=eth1 %>"

tools.syncTime = "TRUE"}

pxetemplate = %q{DEFAULT etch_i386_install_autoTIMEOUT 100

LABEL etch_i386_install_auto        kernel debian/etch/i386/linux        append vga=normal initrd=debian/etch/i386/initrd.gz preseed/url=http://debian.example.org/preseed/autoserver-etch.cfg debian-installer/locale=en_US console-keymaps-at/keymap=us hostname=<%=hostname %> domain=<%=domain %> interface=eth0 --}

def lastdhcpip(ourmac)  curLeaseIp = nil  curLeaseMac = nil  lastip = nil

  f = File.open("/var/lib/dhcp/dhcpd.leases")  f.each do |line|    case line    when /lease (.*) \{/      curLeaseIp = $1    when /hardware ethernet (.*);/      curLeaseMac = $1      if ourmac == curLeaseMac        lastip = curLeaseIp      end    end  end

  f.close  return lastipend

set(:disktype, "lsilogic")set(:disksize, "3Gb")set(:memory, "768")

#set(:hostname, fqdn.match(/^[0-9A-Za-z-]*/))#puts("hostname: #{hostname}")

task :build, :roles => :host  do  set(:host) do    Capistrano::CLI.ui.ask "vmware hostname: "  end unless exists?(:host)

  role :host, host

  set(:hostname) do    Capistrano::CLI.ui.ask "guest hostname (vm16-dev-ots04): "  end unless exists?(:hostname)

  set(:network) do    Capistrano::CLI.ui.ask "guest network (prod/corp/test): "  end unless exists?(:network)

  case network    when /prod/      set(:fqdn, "#{hostname}.prod.example.org")      set(:domain, "prod.example.org")      set(:eth0, "/dev/vmnet4")      set(:eth1, "/dev/vmnet11")    when /corp/      set(:fqdn, "#{hostname}.corp.example.org")      set(:domain, "corp.example.org")      set(:eth0, "/dev/vmnet0")      set(:eth1, "/dev/vmnet0")    when /test/      set(:fqdn, "#{hostname}.test.example.org")      set(:domain, "test.example.org")     set(:eth0, "/dev/vmnet2")      set(:eth1, "/dev/vmnet14")  end  puts("fqdn: #{fqdn}")

  result = ERB.new(vmxtemplate).result(binding)

  run("mkdir /srv/vmware/#{fqdn}")  logger.info("Building vmx configuration file")  put(result, "/srv/vmware/#{fqdn}/#{fqdn}.vmx", :mode => 0755)

  logger.info("Creating virtual disk")  run("/usr/bin/vmware-vdiskmanager -c -a #{disktype} -s #{disksize} -t 2 /srv/vmware/#{fqdn}/#{fqdn}.vmdk")

  # start and stop vm to generate uuid and MACs  logger.info("starting VM")  #run("/usr/bin/vmware-cmd -s unregister /srv/vmware/#{fqdn}/#{fqdn}.vmx")  run("/usr/bin/vmware-cmd -s register /srv/vmware/#{fqdn}/#{fqdn}.vmx")  run("/usr/bin/vmware-cmd /srv/vmware/#{fqdn}/#{fqdn}.vmx start")  sleep 1  run("/usr/bin/vmware-cmd /srv/vmware/#{fqdn}/#{fqdn}.vmx stop hard")  macaddr0 = nil  run("cat /srv/vmware/#{fqdn}/#{fqdn}.vmx") do |ch, stream, data|    case data    when /ethernet0.generatedAddress = "(.+)"/      macaddr0 = $1    end  end  macaddr0dash = macaddr0.gsub(/:/, "-");

  pxeConfig = File.new("/srv/tftp/pxelinux.cfg/01-#{macaddr0dash}", "w", 0644)  result = ERB.new(pxetemplate).result(binding)  pxeConfig.puts(result)  pxeConfig.close

  # Box gets a different ip sometimes on install than on first boot. annoying  run("/usr/bin/vmware-cmd /srv/vmware/#{fqdn}/#{fqdn}.vmx start")  logger.info("Sleeping 30 seconds for network startup")  sleep 30  ipaddr0 = lastdhcpip(macaddr0)  logger.info("host #{fqdn} is now building and we be available at #{ipaddr0}")  File.delete("/srv/tftp/pxelinux.cfg/01-#{macaddr0dash}")end