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"""
Builds out filesystem trees/data based on the object tree.
This is the code behind 'cobbler sync'.
Copyright 2006-2008, Red Hat, Inc
Michael DeHaan <mdehaan@redhat.com>
This software may be freely redistributed under the terms of the GNU
general public license.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
import os
import os.path
import shutil
import time
import yaml # Howell-Clark version
import sub_process
import sys
import glob
import traceback
import errno
import utils
from cexceptions import *
import templar
import pxegen
import yumgen
import item_distro
import item_profile
import item_repo
import item_system
from Cheetah.Template import Template
from utils import _
class BootSync:
"""
Handles conversion of internal state to the tftpboot tree layout
"""
def __init__(self,config,verbose=False,dhcp=None,dns=None):
"""
Constructor
"""
self.verbose = verbose
self.config = config
self.api = config.api
self.distros = config.distros()
self.profiles = config.profiles()
self.systems = config.systems()
self.settings = config.settings()
self.repos = config.repos()
self.templar = templar.Templar(config)
self.pxegen = pxegen.PXEGen(config)
self.dns = dns
self.dhcp = dhcp
self.yumgen = yumgen.YumGen(config)
self.bootloc = utils.tftpboot_location()
def run(self):
"""
Syncs the current configuration file with the config tree.
Using the Check().run_ functions previously is recommended
"""
if not os.path.exists(self.bootloc):
raise CX(_("cannot find directory: %s") % self.bootloc)
# run pre-triggers...
utils.run_triggers(None, "/var/lib/cobbler/triggers/sync/pre/*")
# (paranoid) in case the pre-trigger modified any objects...
self.api.deserialize()
self.distros = self.config.distros()
self.profiles = self.config.profiles()
self.systems = self.config.systems()
self.settings = self.config.settings()
self.repos = self.config.repos()
self.pxegen = pxegen.PXEGen(self.config)
self.yumgen = yumgen.YumGen(self.config)
# execute the core of the sync operation
self.clean_trees()
self.pxegen.copy_bootloaders()
self.pxegen.copy_distros()
for x in self.systems:
self.pxegen.write_all_system_files(x)
self.yumgen.retemplate_all_yum_repos()
if self.settings.manage_dhcp:
self.dhcp.write_dhcp_file()
self.dhcp.regen_ethers()
if self.settings.manage_dns:
self.dns.regen_hosts()
self.dns.write_dns_files()
self.pxegen.make_pxe_menu()
# run post-triggers
utils.run_triggers(None, "/var/lib/cobbler/triggers/sync/post/*")
return True
def clean_trees(self):
"""
Delete any previously built pxelinux.cfg tree and virt tree info and then create
directories.
Note: for SELinux reasons, some information goes in /tftpboot, some in /var/www/cobbler
and some must be duplicated in both. This is because PXE needs tftp, and auto-kickstart
and Virt operations need http. Only the kernel and initrd images are duplicated, which is
unfortunate, though SELinux won't let me give them two contexts, so symlinks are not
a solution. *Otherwise* duplication is minimal.
"""
# clean out parts of webdir and all of /tftpboot/images and /tftpboot/pxelinux.cfg
for x in os.listdir(self.settings.webdir):
path = os.path.join(self.settings.webdir,x)
if os.path.isfile(path):
if not x.endswith(".py"):
utils.rmfile(path)
if os.path.isdir(path):
if not x in ["web", "webui", "localmirror","repo_mirror","ks_mirror","images","links","repo_profile","repo_system","svc"] :
# delete directories that shouldn't exist
utils.rmtree(path)
if x in ["kickstarts","kickstarts_sys","images","systems","distros","profiles","repo_profile","repo_system"]:
# clean out directory contents
utils.rmtree_contents(path)
pxelinux_dir = os.path.join(self.bootloc, "pxelinux.cfg")
images_dir = os.path.join(self.bootloc, "images")
if not os.path.exists(pxelinux_dir):
utils.makedir(pxelinux_dir)
if not os.path.exists(images_dir):
utils.makedir(images_dir)
utils.rmtree_contents(os.path.join(self.bootloc, "pxelinux.cfg"))
utils.rmtree_contents(os.path.join(self.bootloc, "images"))
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