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 BootServerRequest
  15 import ModelOptions
  16 import urlparse
  17
  18 def Run( vars, log ):
  19     """
  20     Write out the network configuration for this machine:
  21     /etc/hosts
  22     /etc/sysconfig/network-scripts/ifcfg-eth0
  23     /etc/resolv.conf (if applicable)
  24     /etc/sysconfig/network
  25
  26     It is assumed the caller mounted the root partition and the vserver partition
  27     starting on SYSIMG_PATH - it is not checked here.
  28
  29     The values to be used for the network settings are to be set in vars
  30     in the variable 'NETWORK_SETTINGS', which is a dictionary
  31     with keys:
  32
  33      Key               Used by this function
  34      -----------------------------------------------
  35      node_id
  36      node_key
  37      method            x
  38      ip                x
  39      mac               x (optional)
  40      gateway           x
  41      network           x
  42      broadcast         x
  43      netmask           x
  44      dns1              x
  45      dns2              x (optional)
  46      hostname          x
  47      domainname        x
  48
  49     Expect the following variables from the store:
  50     SYSIMG_PATH             the path where the system image will be mounted
  51                             (always starts with TEMP_PATH)
  52     NETWORK_SETTINGS  A dictionary of the values from the network
  53                                 configuration file
  54     Sets the following variables:
  55     None
  56     """
  57
  58     log.write( "\n\nStep: Install: Writing Network Configuration files.\n" )
  59
  60     try:
  61         SYSIMG_PATH= vars["SYSIMG_PATH"]
  62         if SYSIMG_PATH == "":
  63             raise ValueError, "SYSIMG_PATH"
  64
  65     except KeyError, var:
  66         raise BootManagerException, "Missing variable in vars: %s\n" % var
  67     except ValueError, var:
  68         raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
  69
  70
  71     try:
  72         network_settings= vars['NETWORK_SETTINGS']
  73     except KeyError, e:
  74         raise BootManagerException, "No network settings found in vars."
  75
  76     try:
  77         hostname= network_settings['hostname']
  78         domainname= network_settings['domainname']
  79         method= network_settings['method']
  80         ip= network_settings['ip']
  81         gateway= network_settings['gateway']
  82         network= network_settings['network']
  83         netmask= network_settings['netmask']
  84         dns1= network_settings['dns1']
  85         mac= network_settings['mac']
  86     except KeyError, e:
  87         raise BootManagerException, "Missing value %s in network settings." % str(e)
  88
  89     try:
  90         dns2= ''
  91         dns2= network_settings['dns2']
  92     except KeyError, e:
  93         pass
  94
  95
  96     # Node Manager needs at least PLC_API_HOST and PLC_BOOT_HOST
  97     log.write("Writing /etc/planetlab/plc_config\n")
  98     utils.makedirs("%s/etc/planetlab" % SYSIMG_PATH)
  99     plc_config = file("%s/etc/planetlab/plc_config" % SYSIMG_PATH, "w")
 100
 101     bs= BootServerRequest.BootServerRequest()
 102     if bs.BOOTSERVER_CERTS:
 103         print >> plc_config, "PLC_BOOT_HOST='%s'" % bs.BOOTSERVER_CERTS.keys()[0]
 104
 105     api_url = vars['BOOT_API_SERVER']
 106     (scheme, netloc, path, params, query, fragment) = urlparse.urlparse(api_url)
 107     parts = netloc.split(':')
 108     host = parts[0]
 109     if len(parts) > 1:
 110         port = parts[1]
 111     else:
 112         port = '80'
 113     print >> plc_config, "PLC_API_HOST='%s'" % host
 114     print >> plc_config, "PLC_API_PORT='%s'" % port
 115     print >> plc_config, "PLC_API_PATH='%s'" % path
 116
 117     plc_config.close()
 118
 119
 120     log.write( "Writing /etc/hosts\n" )
 121     hosts_file= file("%s/etc/hosts" % SYSIMG_PATH, "w" )
 122     hosts_file.write( "127.0.0.1       localhost\n" )
 123     if method == "static":
 124         hosts_file.write( "%s %s.%s\n" % (ip, hostname, domainname) )
 125     hosts_file.close()
 126     hosts_file= None
 127
 128
 129     log.write( "Writing /etc/sysconfig/network-scripts/ifcfg-eth0\n" )
 130     eth0_file= file("%s/etc/sysconfig/network-scripts/ifcfg-eth0" %
 131                     SYSIMG_PATH, "w" )
 132     eth0_file.write( "DEVICE=eth0\n" )
 133     if method == "static":
 134         eth0_file.write( "BOOTPROTO=static\n" )
 135         eth0_file.write( "IPADDR=%s\n" % ip )
 136         eth0_file.write( "NETMASK=%s\n" % netmask )
 137         eth0_file.write( "GATEWAY=%s\n" % gateway )
 138     else:
 139         eth0_file.write( "BOOTPROTO=dhcp\n" )
 140         eth0_file.write( "DHCP_HOSTNAME=%s\n" % hostname )
 141     if mac != "":
 142         eth0_file.write( "HWADDR=%s\n" % mac )
 143     eth0_file.write( "ONBOOT=yes\n" )
 144     eth0_file.write( "USERCTL=no\n" )
 145     eth0_file.close()
 146     eth0_file= None
 147
 148     if method == "static":
 149         log.write( "Writing /etc/resolv.conf\n" )
 150         resolv_file= file("%s/etc/resolv.conf" % SYSIMG_PATH, "w" )
 151         if dns1 != "":
 152             resolv_file.write( "nameserver %s\n" % dns1 )
 153         if dns2 != "":
 154             resolv_file.write( "nameserver %s\n" % dns2 )
 155         resolv_file.write( "search %s\n" % domainname )
 156         resolv_file.close()
 157         resolv_file= None
 158
 159     log.write( "Writing /etc/sysconfig/network\n" )
 160     network_file= file("%s/etc/sysconfig/network" % SYSIMG_PATH, "w" )
 161     network_file.write( "NETWORKING=yes\n" )
 162     network_file.write( "HOSTNAME=%s.%s\n" % (hostname, domainname) )
 163     if method == "static":
 164         network_file.write( "GATEWAY=%s\n" % gateway )
 165     network_file.close()
 166     network_file= None