+
+
+
+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 as var:
+ raise BootManagerException("Missing variable in vars: {}\n".format(var))
+ except ValueError as var:
+ raise BootManagerException("Variable in vars, shouldn't be: {}\n".format(var))
+
+ try:
+ ip = INTERFACE_SETTINGS['ip']
+ method = INTERFACE_SETTINGS['method']
+ hostname = INTERFACE_SETTINGS['hostname']
+ domainname = INTERFACE_SETTINGS['domainname']
+ except KeyError as var:
+ raise BootManagerException(
+ "Missing network value {} in var INTERFACE_SETTINGS\n".format(var))
+
+ try:
+ os.listdir(vserver_dir)
+ except OSError:
+ log.write("Directory {} does not exist to write network conf in.\n"
+ .format(vserver_dir))
+ return
+
+ file_path = "{}/etc/{}".format(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{}\n"
+ .format(vserver_dir))
+ utils.sysexec_noerr("echo '{}' > {}/etc/{}"
+ .format(UPDATE_FILE_FLAG, vserver_dir, UPDATE_FILE_FLAG),
+ log)
+ update_files = 1
+
+
+ if update_files:
+ log.write("Updating network files in {}.\n".format(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 {}/etc/hosts".format(vserver_dir), log)
+ utils.sysexec("chattr -i {}/etc/resolv.conf".format(vserver_dir), log)
+ except:
+ pass
+
+
+ file_path = "{}/etc/hosts".format(vserver_dir)
+ hosts_file = file(file_path, "w")
+ hosts_file.write("127.0.0.1 localhost\n")
+ if method == "static":
+ hosts_file.write("{} {}.{}\n".format(ip, hostname, domainname))
+ hosts_file.close()
+ hosts_file = None
+
+ file_path = "{}/etc/resolv.conf".format(vserver_dir)
+ if method == "dhcp":
+ # copy the resolv.conf from the boot cd env.
+ utils.sysexec("cp /etc/resolv.conf {}/etc".format(vserver_dir), log)
+ else:
+ # copy the generated resolv.conf from the system image, since
+ # we generated it via static settings
+ utils.sysexec("cp {}/etc/resolv.conf {}/etc"
+ .format(SYSIMG_PATH, vserver_dir), log)
+
+ return