source/steps/WriteNetworkConfig.py

   1 #!/usr/bin/python2
   2
   3 # Copyright (c) 2003 Intel Corporation
   4 # All rights reserved.
   5 #
   6 # Copyright (c) 2004-2006 The Trustees of Princeton University
   7 # All rights reserved.
   8 # expected /proc/partitions format
   9
  10 import os, string
  11
  12 from Exceptions import *
  13 import utils
  14 import BootAPI
  15 import ModelOptions
  16
  17 def Run( vars, log ):
  18     """
  19     Write out the network configuration for this machine:
  20     /etc/hosts
  21     /etc/sysconfig/network-scripts/ifcfg-eth0
  22     /etc/resolv.conf (if applicable)
  23     /etc/sysconfig/network
  24
  25     It is assumed the caller mounted the root partition and the vserver partition
  26     starting on SYSIMG_PATH - it is not checked here.
  27
  28     The values to be used for the network settings are to be set in vars
  29     in the variable 'NETWORK_SETTINGS', which is a dictionary
  30     with keys:
  31
  32      Key               Used by this function
  33      -----------------------------------------------
  34      node_id
  35      node_key
  36      method            x
  37      ip                x
  38      mac               x (optional)
  39      gateway           x
  40      network           x
  41      broadcast         x
  42      netmask           x
  43      dns1              x
  44      dns2              x (optional)
  45      hostname          x
  46      domainname        x
  47
  48     Expect the following variables from the store:
  49     SYSIMG_PATH             the path where the system image will be mounted
  50                             (always starts with TEMP_PATH)
  51     NETWORK_SETTINGS  A dictionary of the values from the network
  52                                 configuration file
  53     Sets the following variables:
  54     None
  55     """
  56
  57     log.write( "\n\nStep: Install: Writing Network Configuration files.\n" )
  58
  59     try:
  60         SYSIMG_PATH= vars["SYSIMG_PATH"]
  61         if SYSIMG_PATH == "":
  62             raise ValueError, "SYSIMG_PATH"
  63
  64     except KeyError, var:
  65         raise BootManagerException, "Missing variable in vars: %s\n" % var
  66     except ValueError, var:
  67         raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
  68
  69
  70     try:
  71         network_settings= vars['NETWORK_SETTINGS']
  72     except KeyError, e:
  73         raise BootManagerException, "No network settings found in vars."
  74
  75     try:
  76         hostname= network_settings['hostname']
  77         domainname= network_settings['domainname']
  78         method= network_settings['method']
  79         ip= network_settings['ip']
  80         gateway= network_settings['gateway']
  81         network= network_settings['network']
  82         netmask= network_settings['netmask']
  83         dns1= network_settings['dns1']
  84         mac= network_settings['mac']
  85     except KeyError, e:
  86         raise BootManagerException, "Missing value %s in network settings." % str(e)
  87
  88     try:
  89         dns2= ''
  90         dns2= network_settings['dns2']
  91     except KeyError, e:
  92         pass
  93
  94
  95     log.write( "Writing /etc/hosts\n" )
  96     hosts_file= file("%s/etc/hosts" % SYSIMG_PATH, "w" )
  97     hosts_file.write( "127.0.0.1       localhost\n" )
  98     if method == "static":
  99         hosts_file.write( "%s %s.%s\n" % (ip, hostname, domainname) )
 100     hosts_file.close()
 101     hosts_file= None
 102
 103
 104     log.write( "Writing /etc/sysconfig/network-scripts/ifcfg-eth0\n" )
 105     eth0_file= file("%s/etc/sysconfig/network-scripts/ifcfg-eth0" %
 106                     SYSIMG_PATH, "w" )
 107     eth0_file.write( "DEVICE=eth0\n" )
 108     if method == "static":
 109         eth0_file.write( "BOOTPROTO=static\n" )
 110         eth0_file.write( "IPADDR=%s\n" % ip )
 111         eth0_file.write( "NETMASK=%s\n" % netmask )
 112         eth0_file.write( "GATEWAY=%s\n" % gateway )
 113     else:
 114         eth0_file.write( "BOOTPROTO=dhcp\n" )
 115         eth0_file.write( "DHCP_HOSTNAME=%s\n" % hostname )
 116     if mac != "":
 117         eth0_file.write( "HWADDR=%s\n" % mac )
 118     eth0_file.write( "ONBOOT=yes\n" )
 119     eth0_file.write( "USERCTL=no\n" )
 120     eth0_file.close()
 121     eth0_file= None
 122
 123     if method == "static":
 124         log.write( "Writing /etc/resolv.conf\n" )
 125         resolv_file= file("%s/etc/resolv.conf" % SYSIMG_PATH, "w" )
 126         if dns1 != "":
 127             resolv_file.write( "nameserver %s\n" % dns1 )
 128         if dns2 != "":
 129             resolv_file.write( "nameserver %s\n" % dns2 )
 130         resolv_file.write( "search %s\n" % domainname )
 131         resolv_file.close()
 132         resolv_file= None
 133
 134     log.write( "Writing /etc/sysconfig/network\n" )
 135     network_file= file("%s/etc/sysconfig/network" % SYSIMG_PATH, "w" )
 136     network_file.write( "NETWORKING=yes\n" )
 137     network_file.write( "HOSTNAME=%s.%s\n" % (hostname, domainname) )
 138     if method == "static":
 139         network_file.write( "GATEWAY=%s\n" % gateway )
 140     network_file.close()
 141     network_file= None