- move InstallBuildVServer.update_vserver_network_files() to

[bootmanager.git] / source / steps / UpdateNodeConfiguration.py

diff --git a/source/steps/UpdateNodeConfiguration.py b/source/steps/UpdateNodeConfiguration.py
index ec74bc2..c6fe2d5 100644 (file)
--- a/source/steps/UpdateNodeConfiguration.py
+++ b/source/steps/UpdateNodeConfiguration.py
@@ -9,11 +9,15 @@
 
 import os
 
-import InstallBuildVServer
 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 ):
     """
@@ -74,7 +78,7 @@ def Run( vars, log ):
     # need to be updated.
     update_path_list= []
 
-    for base_dir in ('/vservers','/vservers/.vcache'):
+    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 )
@@ -102,6 +106,97 @@ def Run( vars, log ):
     # now, update /etc/hosts and /etc/resolv.conf in each dir if
     # the update flag is there
     for base_dir in update_path_list:
-        InstallBuildVServer.update_vserver_network_files(base_dir,vars,log)
+        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)
+    NETWORK_SETTINGS   A dictionary of the values from the network
+                       configuration file
+    """
+
+    try:
+        SYSIMG_PATH= vars["SYSIMG_PATH"]
+        if SYSIMG_PATH == "":
+            raise ValueError, "SYSIMG_PATH"
+
+        NETWORK_SETTINGS= vars["NETWORK_SETTINGS"]
+        if NETWORK_SETTINGS == "":
+            raise ValueError, "NETWORK_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= NETWORK_SETTINGS['ip']
+        method= NETWORK_SETTINGS['method']
+        hostname= NETWORK_SETTINGS['hostname']
+        domainname= NETWORK_SETTINGS['domainname']
+    except KeyError, var:
+        raise BootManagerException, \
+              "Missing network value %s in var NETWORK_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
+
+        
+    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 )
+        
+        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