Class: Yast::VM_XENClass

Inherits:
Module
  • Object
show all
Defined in:
../../src/modules/VM_XEN.rb

Instance Method Summary (collapse)

Instance Method Details

- (Object) ConfigureDom0(is_s390)



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# File '../../src/modules/VM_XEN.rb', line 172

def ConfigureDom0(is_s390)
  progress_stages = [
    # progress stage 1/2
    _("Verify Installed Packages"),
    # progress stage 2/2
    _("Network Bridge Configuration")
  ]

  progress_descriptions = []

  bridge_exists = false
  install_xen = false
  install_kvm = false
  widget_id = nil

  bridge_path = ""

  progress_length = Builtins.size(progress_stages)

  # Headline for management domain installation
  headline = _("Configuring the VM Server (domain 0)")

  # xen domain0 installation help text - 1/4
  help_text = _(
    "<p><big><b>VM Server Configuration</b></big></p><p>Configuration of the VM Server (domain 0) has two parts.</p>"
  ) +
    # xen domain0 installation help text - 2/4
    _(
      "<p>The required packages are installed into the system first. Then the boot loader is switched to GRUB (if not already used) and the Xen section is added to the boot loader menu if it is missing.</p>"
    ) +
    # xen domain0 installation help text - 3/4
    _(
      "<p>GRUB is needed because it supports the multiboot standard required to boot Xen and the Linux kernel.</p>"
    ) +
    # xen domain0 installation help text - 4/4
    _(
      "<p>When the configuration has finished successfully, you can boot the VM Server from the boot loader menu.</p>"
    )

  # error popup
  abortmsg = _("The installation will be aborted.")

  # Generate a pop dialog to allow user selection of Xen or KVM
  if is_s390 == true
    UI.OpenDialog(
      VBox(
        Label(_("Select the virtualization platform to install.")),
        Left(CheckBox(Id(:xen), Opt(:disabled), "Xen")),
        Left(CheckBox(Id(:kvm), "KVM")),
        ButtonBox(
          PushButton(Id(:accept), Label.AcceptButton),
          PushButton(Id(:cancel), Label.CancelButton)
        )
      )
    )
  else
    UI.OpenDialog(
      VBox(
        Label(_("Select the virtualization platform to install.")),
        Left(CheckBox(Id(:xen), "Xen")),
        Left(CheckBox(Id(:kvm), "KVM")),
        ButtonBox(
          PushButton(Id(:accept), Label.AcceptButton),
          PushButton(Id(:cancel), Label.CancelButton)
        )
      )
    )
  end

  widget_id = UI.UserInput
  if widget_id == :accept
    install_xen = Convert.to_boolean(UI.QueryWidget(Id(:xen), :Value))
    install_kvm = Convert.to_boolean(UI.QueryWidget(Id(:kvm), :Value))
  end

  UI.CloseDialog

  if widget_id == :cancel || install_xen == false && install_kvm == false
    Builtins.y2milestone(
      "VM_XEN::ConfigureDom0 Cancel Selected or no platform selected."
    )
    return false
  end

  Wizard.OpenNextBackDialog
  Wizard.SetDesktopTitleAndIcon("xen")

  # enable progress
  progress = Progress.set(true)

  # Headline for virtual machine installation
  Progress.New(
    headline,
    "",
    progress_length,
    progress_stages,
    progress_descriptions,
    help_text
  )

  # package stage
  Progress.NextStage

  # Common packages to both Xen and KVM
  packages = ["libvirt-python", "vm-install"]

  if install_xen
    packages = Builtins.add(packages, "libvirt-daemon-xen")
    packages = Builtins.add(packages, "xen")
    packages = Builtins.add(packages, "xen-libs")
    packages = Builtins.add(packages, "xen-tools")
    packages = Builtins.add(packages, "kernel-xen")
  end
  if install_kvm
    packages = Builtins.add(packages, "libvirt-daemon-qemu")
    packages = Builtins.add(packages, "kvm")
  end

  inst_gui = true

  Builtins.y2milestone("VM_XEN::ConfigureDom0 Checking for packages...")

  # Assume python gtk is installed. If in text mode we don't care
  if Ops.get_boolean(UI.GetDisplayInfo, "TextMode", true) == true
    inst_gui = Popup.YesNo(
      _("Running in text mode. Install graphical components anyway?")
    )
  end
  if inst_gui == true
    packages = Builtins.add(packages, "python-gtk")
    # Also make sure virt-manager and virt-viewer is there - runs GUI only
    packages = Builtins.add(packages, "virt-manager")
    packages = Builtins.add(packages, "virt-viewer")
  end

  success = true

  # progressbar title - check whether Xen packages are installed
  Progress.Title(_("Checking packages..."))
  if Package.InstalledAll(packages) == false
    # progressbar title - install the required packages
    Progress.Title(_("Installing packages..."))
    success = Package.InstallAll(packages)
    if success == false
      # error popup
      Report.Error(
        Ops.add(_("Cannot install required packages.") + "\n", abortmsg)
      )
      return false
    end
    # Now see if they really were installed (bnc#508347)
    if Package.InstalledAll(packages) == false
      Report.Error(
        Ops.add(_("Cannot install required packages.") + "\n", abortmsg)
      )
      return false
    end
  end

  # If grub2 is the bootloader and we succesfully installed Xen, update the grub2 files
  if install_xen
    Builtins.y2milestone("Checking for bootloader type")
    if Bootloader.getLoaderType == "grub2"
      Progress.Title(_("Updating grub2 configuration files..."))
      cmd = "/usr/sbin/grub2-mkconfig -o /boot/grub2/grub.cfg"
      Builtins.y2milestone("Executing: %1", cmd)
      SCR.Execute(path(".target.bash"), cmd)
    end
  end

  if is_s390 == false
    # Default Bridge stage
    Progress.NextStage

    Progress.Title(_("Configuring Default Network Bridge..."))

    # Check for the existance of /sys/class/net/*/bridge
    interfaces = Convert.convert(
      SCR.Read(path(".target.dir"), @net_path),
      :from => "any",
      :to   => "list <string>"
    )
    Builtins.foreach(interfaces) do |i|
      Builtins.y2milestone("Checking for bridges...")
      bridge_path = Ops.add(Ops.add(Ops.add(@net_path, "/"), i), "/bridge")
      if Ops.greater_or_equal(SCR.Read(path(".target.dir"), bridge_path), 0)
        Builtins.y2milestone("Dom0 already has a configured bridge.")
        bridge_exists = true
        raise Break
      end
    end

    # Popup yes/no dialog
    if bridge_exists == false
      if Popup.AnyQuestionRichText(
          _("Network Bridge."),
          _(
            "<p>For normal network configurations hosting virtual machines, a network bridge is recommended.</p><p>Configure a default network bridge?</p>"
          ),
          45,
          5,
          Label.YesButton,
          Label.NoButton,
          :focus_yes
        )
        Builtins.y2milestone("Configuring default bridge for Xen or KVM...")
        WFM.call("lan_proposal", ["MakeProposal"])
        UI.OpenDialog(VBox())
        WFM.call("lan_proposal", ["Write"])
        UI.CloseDialog
      end
    end

    # Enable the libvirtd daemon if openSUSE
    if isOpenSuse == true
      cmd = "systemctl enable libvirtd.service"
      Builtins.y2milestone("Executing: %1", cmd)
      SCR.Execute(path(".target.bash"), cmd)
    end
  else
    # For s390, make sure /etc/zipl.conf contain switch_amode
    def_section = Bootloader.getDefaultSection
    switch_amode = Bootloader.getKernelParam(def_section, "switch_amode")
    if switch_amode == "false"
      zipl_updated = false
      Builtins.y2milestone(
        "No switch_amode kernel boot parameter in /etc/zipl.conf, adding ..."
      )
      if Bootloader.setKernelParam(def_section, "switch_amode", "true") == true
        if Bootloader.Write == true
          zipl_updated = true
          cmd = "/sbin/zipl"
          Builtins.y2milestone("Executing: %1", cmd)
          SCR.Execute(path(".target.bash"), cmd)
          Builtins.y2milestone(
            "Successful update of /etc/zipl.conf with the switch_amode kernel boot parameter"
          )
        end
      end
      if zipl_updated == false
        Builtins.y2milestone(
          "Failed to correctly update /etc/zipl.conf with switch_amode kernel boot parameter"
        )
      end
    end
  end

  # Firewall stage - modify the firewall setting, add the xen bridge to FW_FORWARD_ALWAYS_INOUT_DEV
  # Progress::NextStage();

  # Configure firewall to allow xenbr+
  # success = success && ConfigureFirewall();
  # if ( success == false ) {
  #     // error popup
  #     Report::Error(_("Failed to configure the firewall to allow the Xen bridge") + "\n" + abortmsg);
  #     return false;
  # }

  Progress.Finish

  message_kvm = _(
    "For installing KVM guests, reboot the machine to load the necessary drivers."
  )
  message_xen_reboot = _(
    "For installing Xen guests, reboot the machine and select the Xen section in the boot loader menu.\n"
  )
  message_xen_ready = _("Hypervisor and tools are installed.")
  message = nil

  if install_xen == false
    Popup.LongMessage(message_kvm)
  else
    if Arch.is_xen == false
      if install_kvm == true
        message = Builtins.sformat(
          "%1\n\n%2",
          message_kvm,
          message_xen_reboot
        )
      else
        message = message_xen_reboot
      end
      # popup message - ask user to reboot the machine
      Popup.LongMessage(message)
    else
      # popup message - Notify user of successful completion (or already installed).
      if install_kvm == true
        message = Builtins.sformat(
          "%1\n\n%2",
          message_kvm,
          message_xen_ready
        )
      else
        message = message_xen_ready
      end
      Popup.Message(message)
    end
  end

  Wizard.CloseDialog

  Builtins.y2milestone("VM_XEN::ConfigureDom0 returned: %1", success)
  success
end

- (Object) ConfigureFirewall



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# File '../../src/modules/VM_XEN.rb', line 53

def ConfigureFirewall
  Builtins.y2milestone("VM_XEN::ConfigureFirewall() started")
  ret = true

  # check whether the firewall option exists
  firewall_configured = false
  if Builtins.contains(
      SCR.Dir(path(".sysconfig.SuSEfirewall2")),
      "FW_FORWARD_ALWAYS_INOUT_DEV"
    )
    xen_bridge = "xenbr+"
    # read the current value
    forward = Convert.to_string(
      SCR.Read(path(".sysconfig.SuSEfirewall2.FW_FORWARD_ALWAYS_INOUT_DEV"))
    )
    Builtins.y2milestone("FW_FORWARD_ALWAYS_INOUT_DEV=%1", forward)
    if Builtins.contains(Builtins.splitstring(forward, " "), xen_bridge)
      Builtins.y2milestone("Firewall already configured!")
      firewall_configured = true # xenbr+ already exists
    end
  end

  if firewall_configured == false
    # add xenbr+ to the firewall configuration
    Builtins.y2milestone("Configuring firewall to allow Xen bridge...")
    progress_orig = Progress.set(false)
    SuSEFirewall.Read
    SuSEFirewall.AddXenSupport
    ret = ret && SuSEFirewall.Write
    Progress.set(progress_orig)
  end

  Builtins.y2milestone("VM_XEN::ConfigureFirewall returned: %1", ret)
  ret
end

- (Object) isOpenSuse



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# File '../../src/modules/VM_XEN.rb', line 89

def isOpenSuse
  Builtins.y2milestone("Checking to see if this is openSUSE ...")
  distro = OSRelease.ReleaseName
  if distro.include? "openSUSE"
    Builtins.y2milestone("Platform is %1", distro)
    return true
  end
  false
end

- (Object) isPAEKernel



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# File '../../src/modules/VM_XEN.rb', line 99

def isPAEKernel
  # check is we're running on 32 bit pae.
  Builtins.y2milestone("Checking for PAE kernel...")
  isPAE = false
  cmd = "uname -r"
  Builtins.y2milestone("Executing: %1", cmd)
  retmap = Convert.to_map(SCR.Execute(path(".target.bash_output"), cmd))
  Ops.set(
    retmap,
    "stdout",
    Builtins.deletechars(Ops.get_string(retmap, "stdout", ""), "\n\t ")
  ) # remove whitespace
  Builtins.y2milestone("retmap=%1", retmap)
  if Ops.get_string(retmap, "stdout", "") != nil &&
      Ops.get_string(retmap, "stdout", "") != ""
    if Builtins.regexpmatch(
        Ops.get_string(retmap, "stdout", ""),
        ".*xenpae$"
      ) # check for kernel-xenpae
      isPAE = true
    elsif Builtins.regexpmatch(
        Ops.get_string(retmap, "stdout", ""),
        ".*bigsmp$"
      ) # check for kernel-bigsmp
      isPAE = true
    else
      isPAE = false
    end
  end
  Builtins.y2milestone("VM_XEN::isPAEKernel returned: %1", isPAE)
  isPAE
end

- (Object) isUML



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# File '../../src/modules/VM_XEN.rb', line 152

def isUML
  ret = false

  if Arch.is_uml == true
    # we are already in UML, nested virtual machine is not supported
    Report.Error(
      _(
        "Virtual machine installation cannot be started inside the UML machine.\nStart installation in the host system.\n"
      )
    )
    ret = true
  else
    ret = false
  end

  Builtins.y2milestone("VM_XEN::isUML returned: %1", ret)
  false
end

- (Object) isX86_64



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# File '../../src/modules/VM_XEN.rb', line 132

def isX86_64
  ret = true

  if Arch.x86_64 == false
    arch = Arch.architecture
    Report.Error(
      Ops.add(
        _(
          "x86_64 is the only supported architecture for hosting virtual machines. Your architecture is "
        ),
        arch
      )
    )
    ret = false
  end

  Builtins.y2milestone("VM_XEN::isX86_64 returned: %1", ret)
  ret
end

- (Object) main



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# File '../../src/modules/VM_XEN.rb', line 32

def main
  Yast.import "UI"

  textdomain "vm"


  Yast.import "Arch"
  Yast.import "OSRelease"
  Yast.import "Package"
  Yast.import "Progress"
  Yast.import "Popup"
  Yast.import "Report"
  Yast.import "SuSEFirewall"
  Yast.import "Wizard"
  Yast.import "Label"
  Yast.import "Bootloader"


  @net_path = "/sys/class/net/"
end