--- /dev/null
+#!/usr/bin/python
+#
+# Copyright (c) 2003 Intel Corporation
+# All rights reserved.
+#
+# Copyright (c) 2004-2006 The Trustees of Princeton University
+# All rights reserved.
+
+
+import os
+
+from Exceptions import *
+import utils
+
+
+# if this file is present in the vservers /etc directory,
+# the resolv.conf and hosts files will automatically be updated
+# by the bootmanager
+UPDATE_FILE_FLAG= "AUTO_UPDATE_NET_FILES"
+
+
+def Run( vars, log ):
+ """
+ Reconfigure a node if necessary, including rewriting any network init
+ scripts based on what PLC has. Also, update any slivers on the machine
+ incase their network files are out of date (primarily /etc/hosts).
+
+ Also write out /etc/planetlab/session, a random string that gets
+ a new value at every request of BootGetNodeDetails (ie, every boot)
+
+ This step expects the root to be already mounted on SYSIMG_PATH.
+
+ Except the following keys to be set:
+ SYSIMG_PATH the path where the system image will be mounted
+ (always starts with TEMP_PATH)
+ ROOT_MOUNTED the node root file system is mounted
+ INTERFACE_SETTINGS A dictionary of the values from the network
+ configuration file
+ """
+
+ log.write( "\n\nStep: Updating node configuration.\n" )
+
+ # make sure we have the variables we need
+ try:
+ INTERFACE_SETTINGS= vars["INTERFACE_SETTINGS"]
+ if INTERFACE_SETTINGS == "":
+ raise ValueError, "INTERFACE_SETTINGS"
+
+ SYSIMG_PATH= vars["SYSIMG_PATH"]
+ if SYSIMG_PATH == "":
+ raise ValueError, "SYSIMG_PATH"
+
+ ROOT_MOUNTED= vars["ROOT_MOUNTED"]
+ if ROOT_MOUNTED == "":
+ raise ValueError, "ROOT_MOUNTED"
+
+ except KeyError, var:
+ raise BootManagerException, "Missing variable in vars: %s\n" % var
+ except ValueError, var:
+ raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
+
+ try:
+ ip= INTERFACE_SETTINGS['ip']
+ method= INTERFACE_SETTINGS['method']
+ hostname= INTERFACE_SETTINGS['hostname']
+ domainname= INTERFACE_SETTINGS['domainname']
+ except KeyError, var:
+ raise BootManagerException, \
+ "Missing network value %s in var INTERFACE_SETTINGS\n" % var
+
+
+ if not ROOT_MOUNTED:
+ raise BootManagerException, "Root isn't mounted on SYSIMG_PATH\n"
+
+ log.write( "Updating vserver's /etc/hosts and /etc/resolv.conf files\n" )
+
+ # create a list of the full directory paths of all the vserver images that
+ # need to be updated.
+ update_path_list= []
+
+ for base_dir in ('/vservers','/vservers/.vref','/vservers/.vcache'):
+ try:
+ full_dir_path= "%s/%s" % (SYSIMG_PATH,base_dir)
+ slices= os.listdir( full_dir_path )
+
+ try:
+ slices.remove("lost+found")
+ except ValueError, e:
+ pass
+
+ update_path_list= update_path_list + map(lambda x: \
+ full_dir_path+"/"+x,
+ slices)
+ except OSError, e:
+ continue
+
+
+ log.write( "Updating network configuration in:\n" )
+ if len(update_path_list) == 0:
+ log.write( "No vserver images found to update.\n" )
+ else:
+ for base_dir in update_path_list:
+ log.write( "%s\n" % base_dir )
+
+
+ # now, update /etc/hosts and /etc/resolv.conf in each dir if
+ # the update flag is there
+ for base_dir in update_path_list:
+ update_vserver_network_files(base_dir,vars,log)
+
+ return
+
+
+
+def update_vserver_network_files( vserver_dir, vars, log ):
+ """
+ Update the /etc/resolv.conf and /etc/hosts files in the specified
+ vserver directory. If the files do not exist, write them out. If they
+ do exist, rewrite them with new values if the file UPDATE_FILE_FLAG
+ exists it /etc. if this is called with the vserver-reference directory,
+ always update the network config files and create the UPDATE_FILE_FLAG.
+
+ This is currently called when setting up the initial vserver reference,
+ and later when nodes boot to update existing vserver images.
+
+ Expect the following variables from the store:
+ SYSIMG_PATH the path where the system image will be mounted
+ (always starts with TEMP_PATH)
+ INTERFACE_SETTINGS A dictionary of the values from the network
+ configuration file
+ """
+
+ try:
+ SYSIMG_PATH= vars["SYSIMG_PATH"]
+ if SYSIMG_PATH == "":
+ raise ValueError, "SYSIMG_PATH"
+
+ INTERFACE_SETTINGS= vars["INTERFACE_SETTINGS"]
+ if INTERFACE_SETTINGS == "":
+ raise ValueError, "INTERFACE_SETTINGS"
+
+ except KeyError, var:
+ raise BootManagerException, "Missing variable in vars: %s\n" % var
+ except ValueError, var:
+ raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
+
+ try:
+ ip= INTERFACE_SETTINGS['ip']
+ method= INTERFACE_SETTINGS['method']
+ hostname= INTERFACE_SETTINGS['hostname']
+ domainname= INTERFACE_SETTINGS['domainname']
+ except KeyError, var:
+ raise BootManagerException, \
+ "Missing network value %s in var INTERFACE_SETTINGS\n" % var
+
+ try:
+ os.listdir(vserver_dir)
+ except OSError:
+ log.write( "Directory %s does not exist to write network conf in.\n" %
+ vserver_dir )
+ return
+
+ file_path= "%s/etc/%s" % (vserver_dir,UPDATE_FILE_FLAG)
+ update_files= 0
+ if os.access(file_path,os.F_OK):
+ update_files= 1
+
+
+ # Thierry - 2012/03 - I'm renaming vserver-reference into sliceimage
+ # however I can't quite grasp the reason for this test below, very likely
+ # compatibility with very old node images or something
+ if '/.vref/' in vserver_dir or \
+ '/.vcache/' in vserver_dir or \
+ '/vserver-reference' in vserver_dir:
+ log.write( "Forcing update on vserver reference directory:\n%s\n" %
+ vserver_dir )
+ utils.sysexec_noerr( "echo '%s' > %s/etc/%s" %
+ (UPDATE_FILE_FLAG,vserver_dir,UPDATE_FILE_FLAG),
+ log )
+ update_files= 1
+
+
+ if update_files:
+ log.write( "Updating network files in %s.\n" % vserver_dir )
+ try:
+ # NOTE: this works around a recurring problem on public pl,
+ # suspected to be due to mismatch between 2.6.12 bootcd and
+ # 2.6.22/f8 root environment. files randomly show up with the
+ # immutible attribute set. this clears it before trying to write
+ # the files below.
+ utils.sysexec( "chattr -i %s/etc/hosts" % vserver_dir , log )
+ utils.sysexec( "chattr -i %s/etc/resolv.conf" % vserver_dir , log )
+ except:
+ pass
+
+
+ file_path= "%s/etc/hosts" % vserver_dir
+ hosts_file= file(file_path, "w" )
+ hosts_file.write( "127.0.0.1 localhost\n" )
+ if method == "static":
+ hosts_file.write( "%s %s.%s\n" % (ip, hostname, domainname) )
+ hosts_file.close()
+ hosts_file= None
+
+ file_path= "%s/etc/resolv.conf" % vserver_dir
+ if method == "dhcp":
+ # copy the resolv.conf from the boot cd env.
+ utils.sysexec( "cp /etc/resolv.conf %s/etc" % vserver_dir, log )
+ else:
+ # copy the generated resolv.conf from the system image, since
+ # we generated it via static settings
+ utils.sysexec( "cp %s/etc/resolv.conf %s/etc" % \
+ (SYSIMG_PATH,vserver_dir), log )
+
+ return
git://git.onelab.eu / bootmanager.git / blobdiff