Class: Yast::NetworkAutoconfiguration

Inherits:
Object
  • Object
show all
Includes:
Logger, Singleton, Wicked
Defined in:
src/lib/network/network_autoconfiguration.rb

Overview

The class is responsible for generating / proposing automatic configuration during installation workflow

Constant Summary collapse

BASH_PATH = 
Path.new(".target.bash")

Constants included from Wicked

Wicked::BASH_OUTPUT_PATH, Wicked::IBFT_CMD, Wicked::WICKED_PATH

Instance Method Summary collapse

Methods included from Wicked

#firmware_configured_by?, #firmware_interfaces, #firmware_interfaces_by_extension, #ibft_interfaces, #parse_hostname, #parse_ntp_servers, #query_wicked, #reload_config

Constructor Details

#initialize ⇒ NetworkAutoconfiguration

Returns a new instance of NetworkAutoconfiguration.



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# File 'src/lib/network/network_autoconfiguration.rb', line 36

def initialize
  Yast.import "Lan"
  Yast.import "Package"
  Yast.import "DNS"
  Yast.import "Arch"
  Yast.import "Host"

  Yast.include self, "network/routines.rb" # TODO: needed only for phy_connected
end

Instance Method Details

#any_iface_active? ⇒ Boolean

Checks if any of available interfaces is configured and active

returns [Boolean] true when at least one interface is active

Returns:

  • (Boolean) 


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# File 'src/lib/network/network_autoconfiguration.rb', line 49

def any_iface_active?
  Yast::Lan.Read(:cache)
  config.interfaces.any? do |interface|
    next false unless active_config?(interface.name)

    config.connections.by_name(interface.name) || firmware_interfaces.include?(interface.name)
  end
end

#configure_dhcp ⇒ Object 



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# File 'src/lib/network/network_autoconfiguration.rb', line 71

def configure_dhcp
  Yast::Lan.Read(:cache)

  dhcp_cards = config.interfaces.select { |i| dhcp_candidate?(i) }

  log.info "Candidates for enabling DHCP: #{dhcp_cards.inspect}"
  return if dhcp_cards.empty?

  # TODO: time consuming, some progress would be nice
  dhcp_cards.each { |d| setup_dhcp(d) }

  activate_changes(dhcp_cards.map(&:name))

  # drop devices without dhcp lease
  inactive_devices = dhcp_cards.reject { |c| active_config?(c.name) }
  log.info "Inactive devices: #{inactive_devices}"

  inactive_devices.each { |c| delete_config(c) }

  # setup route flag
  active_devices = dhcp_cards - inactive_devices

  if active_devices.size == 1
    # just one dhcp device, nothing to care of
    set_default_route_flag(active_devices.first, "yes")
  else
    # try to find just one dhcp aware device for allowing default route
    # if there is more than one dhcp devices enabled for setting default
    # route (DHCLIENT_SET_DEFAULT_ROUTE = "yes"). bnc#868187
    active_devices.find { |d| set_default_route_flag_if_wan_dev?(d.name) }
  end

  activate_changes(dhcp_cards.map(&:name))

  # Force a read of the configuration just for reading the transient
  # hostname as it could be modified through dhcp since previous read.
  Lan.read_config(report: false)
end

#configure_dns ⇒ Object

Propose DNS and Hostname setup



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# File 'src/lib/network/network_autoconfiguration.rb', line 145

def configure_dns
  DNS.Read # handles NetworkConfig too
  log.info("NetworkAutoconfiguration: proposing DNS / Hostname configuration")
  DNS.Write(netconfig_update: false)
end

#configure_hosts ⇒ Object

Proposes updates for /etc/hosts

Expected to be used for updating target system's config. Currently it only updates /etc/hosts with static IP if any.



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# File 'src/lib/network/network_autoconfiguration.rb', line 155

def configure_hosts
  Host.Read
  Host.ResolveHostnameToStaticIPs
  Host.Write
end

#configure_routing ⇒ Object 



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# File 'src/lib/network/network_autoconfiguration.rb', line 161

def configure_routing
  return if config.routing == Lan.system_config.routing

  Lan.write_config(only: [:routing])
end

#configure_virtuals ⇒ Object

Propose configuration for virtual devices

It checks if any of supported virtual machines were installed. If found, propose virtual device(s) configuration



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# File 'src/lib/network/network_autoconfiguration.rb', line 129

def configure_virtuals
  return if !virtual_proposal_required?

  log.info("NetworkAutoconfiguration: proposing virtual devices")

  return unless Lan.ProposeVirtualized

  # avoid restarting network (installation can run via ssh, vnc, ...)
  # Moreover virtual devices are not needed during first stage. So, it can
  # wait for rebooting into just installed target
  return if Lan.yast_config == Lan.system_config

  Lan.write_config
end

#dhcp_candidate?(interface) ⇒ Boolean

Return true if the given interface is connected but it is not configured by firmware or via an ifcfg file.

Note: (it speeds up the initialization phase of installer - bnc#872319)

Parameters:

Returns:

  • (Boolean) 


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# File 'src/lib/network/network_autoconfiguration.rb', line 64

def dhcp_candidate?(interface)
  return false if config.connections.by_name(interface.name)
  return false if firmware_interfaces.include?(interface.name)

  phy_connected?(interface.name)
end

#virtual_proposal_required? ⇒ Boolean

Decides if a proposal for virtualization host machine is required.

Returns:

  • (Boolean) —

    whether the bridge network configuration for virtualization should be proposed or not



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# File 'src/lib/network/network_autoconfiguration.rb', line 114

def virtual_proposal_required?
  # S390 has special requirements. See bnc#817943
  return false if Arch.s390

  return true if Package.Installed("xen") && Arch.is_xen0
  return true if Package.Installed("kvm")
  return true if Package.Installed("qemu")

  false
end