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 import BootAPI
  18
  19 def Run( vars, log ):
  20     """
  21     Write out the network configuration for this machine:
  22     /etc/hosts
  23     /etc/sysconfig/network-scripts/ifcfg-eth0
  24     /etc/resolv.conf (if applicable)
  25     /etc/sysconfig/network
  26
  27     The values to be used for the network settings are to be set in vars
  28     in the variable 'NETWORK_SETTINGS', which is a dictionary
  29     with keys:
  30
  31      Key               Used by this function
  32      -----------------------------------------------
  33      node_id
  34      node_key
  35      method            x
  36      ip                x
  37      mac               x (optional)
  38      gateway           x
  39      network           x
  40      broadcast         x
  41      netmask           x
  42      dns1              x
  43      dns2              x (optional)
  44      hostname          x
  45      domainname        x
  46
  47     Expect the following variables from the store:
  48     SYSIMG_PATH             the path where the system image will be mounted
  49                             (always starts with TEMP_PATH)
  50     NETWORK_SETTINGS  A dictionary of the values from the network
  51                                 configuration file
  52     NODE_NETWORKS           All the network associated with this node
  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     # Node Manager needs at least PLC_API_HOST and PLC_BOOT_HOST
  96     log.write("Writing /etc/planetlab/plc_config\n")
  97     utils.makedirs("%s/etc/planetlab" % SYSIMG_PATH)
  98     plc_config = file("%s/etc/planetlab/plc_config" % SYSIMG_PATH, "w")
  99
 100     bs= BootServerRequest.BootServerRequest()
 101     if bs.BOOTSERVER_CERTS:
 102         print >> plc_config, "PLC_BOOT_HOST='%s'" % bs.BOOTSERVER_CERTS.keys()[0]
 103
 104     api_url = vars['BOOT_API_SERVER']
 105     (scheme, netloc, path, params, query, fragment) = urlparse.urlparse(api_url)
 106     parts = netloc.split(':')
 107     host = parts[0]
 108     if len(parts) > 1:
 109         port = parts[1]
 110     else:
 111         port = '80'
 112     print >> plc_config, "PLC_API_HOST='%s'" % host
 113     print >> plc_config, "PLC_API_PORT='%s'" % port
 114     print >> plc_config, "PLC_API_PATH='%s'" % path
 115
 116     plc_config.close()
 117
 118
 119     log.write( "Writing /etc/hosts\n" )
 120     hosts_file= file("%s/etc/hosts" % SYSIMG_PATH, "w" )
 121     hosts_file.write( "127.0.0.1       localhost\n" )
 122     if method == "static":
 123         hosts_file.write( "%s %s.%s\n" % (ip, hostname, domainname) )
 124     hosts_file.close()
 125     hosts_file= None
 126
 127
 128     if method == "static":
 129         log.write( "Writing /etc/resolv.conf\n" )
 130         resolv_file= file("%s/etc/resolv.conf" % SYSIMG_PATH, "w" )
 131         if dns1 != "":
 132             resolv_file.write( "nameserver %s\n" % dns1 )
 133         if dns2 != "":
 134             resolv_file.write( "nameserver %s\n" % dns2 )
 135         resolv_file.write( "search %s\n" % domainname )
 136         resolv_file.close()
 137         resolv_file= None
 138
 139     log.write( "Writing /etc/sysconfig/network\n" )
 140     network_file= file("%s/etc/sysconfig/network" % SYSIMG_PATH, "w" )
 141     network_file.write( "NETWORKING=yes\n" )
 142     network_file.write( "HOSTNAME=%s.%s\n" % (hostname, domainname) )
 143     if method == "static":
 144         network_file.write( "GATEWAY=%s\n" % gateway )
 145     network_file.close()
 146     network_file= None
 147
 148     interfaces = {}
 149     interface = 1
 150     for network in vars['NODE_NETWORKS']:
 151         if method == "static" or method == "dhcp":
 152             if network['is_primary'] == 1:
 153                 ifnum = 0
 154             else:
 155                 ifnum = interface
 156                 interface += 1
 157
 158             int = {}
 159             if network['mac']:
 160                 int['HWADDR'] = network['mac']
 161
 162             if network['method'] == "static":
 163                 int['BOOTPROTO'] = "static"
 164                 int['IPADDR'] = network['ip']
 165                 int['NETMASK'] = network['netmask']
 166
 167             elif network['method'] == "dhcp":
 168                 int['BOOTPROTO'] = "dhcp"
 169                 if network['hostname']:
 170                     int['DHCP_HOSTNAME'] = network['hostname']
 171                 else:
 172                     int['DHCP_HOSTNAME'] = hostname
 173                 if not network['is_primary']:
 174                     int['DHCLIENTARGS'] = "-R subnet-mask"
 175
 176             alias = ""
 177             ifname=None
 178             if len(network['nodenetwork_setting_ids']) > 0:
 179                 settings = BootAPI.call_api_function(vars, "GetNodeNetworkSettings",
 180                     ({'nodenetwork_setting_id': network['nodenetwork_setting_ids']},))
 181                 for setting in settings:
 182                     # to explicitly set interface name
 183                     if   setting['name'].upper() == "IFNAME":
 184                         ifname=setting['value']
 185                     elif setting['name'].upper() == "DRIVER":
 186                         # xxx not sure how to do that yet - probably add a line in modprobe.conf
 187                         pass
 188                     elif setting['name'].upper() == "ALIAS":
 189                         alias = ":" + setting['value']
 190
 191                     # a hack for testing before a new setting is hardcoded here
 192                     # use the backdoor setting and put as a value 'var=value'
 193                     elif setting['name'].upper() == "BACKDOOR":
 194                         [var,value]=setting['value'].split('=',1)
 195                         int[var]=value
 196
 197                     elif setting['name'].upper() in \
 198                             [  "mode", "essid", "nw", "freq", "channel", "sens", "rate",
 199                                "key", "key1", "key2", "key3", "key4", "securitymode",
 200                                "iwconfig", "iwpriv" ] :
 201                         int [setting['name'].upper()] = setting['value']
 202                         int ['TYPE']=Wireless
 203                     else:
 204                         log.write("Warning - ignored setting named %s"%setting['name'])
 205
 206             if alias and 'HWADDR' in int:
 207                 for (dev, i) in interfaces.iteritems():
 208                     if i['HWADDR'] == int['HWADDR']:
 209                         break
 210                 del int['HWADDR']
 211                 interfaces[dev + alias] = int
 212                 interface -= 1
 213             else:
 214                 if not ifname:
 215                     ifname="eth%d" % ifnum
 216                 else:
 217                     interface -= 1
 218                 interfaces[ifname] = int
 219
 220     for (dev, int) in interfaces.iteritems():
 221         path = "%s/etc/sysconfig/network-scripts/ifcfg-%s" % (
 222                SYSIMG_PATH, dev)
 223         f = file(path, "w")
 224         log.write("Writing %s\n" % path.replace(SYSIMG_PATH, ""))
 225
 226         f.write("DEVICE=%s\n" % dev)
 227         f.write("ONBOOT=yes\n")
 228         f.write("USERCTL=no\n")
 229         for (key, val) in int.iteritems():
 230             f.write('%s="%s"\n' % (key, val))
 231
 232         f.close()
 233