/usr/share/pyshared/cobbler/action_reposync.py is in python-maas-provision 2.2.2-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Builds out and synchronizes yum repo mirrors.
Initial support for rsync, perhaps reposync coming later.
Copyright 2006-2007, Red Hat, Inc
Michael DeHaan <mdehaan@redhat.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
"""
import os
import os.path
import time
import yaml # Howell-Clark version
import sys
HAS_YUM = True
try:
import yum
except:
HAS_YUM = False
import utils
from cexceptions import *
import traceback
import errno
from utils import _
import clogger
class RepoSync:
"""
Handles conversion of internal state to the tftpboot tree layout
"""
# ==================================================================================
def __init__(self,config,tries=1,nofail=False,logger=None):
"""
Constructor
"""
self.verbose = True
self.api = config.api
self.config = config
self.distros = config.distros()
self.profiles = config.profiles()
self.systems = config.systems()
self.settings = config.settings()
self.repos = config.repos()
self.rflags = self.settings.reposync_flags
self.tries = tries
self.nofail = nofail
self.logger = logger
if logger is None:
self.logger = clogger.Logger()
self.logger.info("hello, reposync")
# ===================================================================
def run(self, name=None, verbose=True):
"""
Syncs the current repo configuration file with the filesystem.
"""
self.logger.info("run, reposync, run!")
try:
self.tries = int(self.tries)
except:
utils.die(self.logger,"retry value must be an integer")
self.verbose = verbose
report_failure = False
for repo in self.repos:
env = repo.environment
for k in env.keys():
self.logger.info("environment: %s=%s" % (k,env[k]))
if env[k] is not None:
os.putenv(k,env[k])
if name is not None and repo.name != name:
# invoked to sync only a specific repo, this is not the one
continue
elif name is None and not repo.keep_updated:
# invoked to run against all repos, but this one is off
self.logger.info("%s is set to not be updated" % repo.name)
continue
repo_mirror = os.path.join(self.settings.webdir, "repo_mirror")
repo_path = os.path.join(repo_mirror, repo.name)
mirror = repo.mirror
if not os.path.isdir(repo_path) and not repo.mirror.lower().startswith("rhn://"):
os.makedirs(repo_path)
# which may actually NOT reposync if the repo is set to not mirror locally
# but that's a technicality
for x in range(self.tries+1,1,-1):
success = False
try:
self.sync(repo)
success = True
except:
utils.log_exc(self.logger)
self.logger.warning("reposync failed, tries left: %s" % (x-2))
if not success:
report_failure = True
if not self.nofail:
utils.die(self.logger,"reposync failed, retry limit reached, aborting")
else:
self.logger.error("reposync failed, retry limit reached, skipping")
self.update_permissions(repo_path)
if report_failure:
utils.die(self.logger,"overall reposync failed, at least one repo failed to synchronize")
return True
# ==================================================================================
def sync(self, repo):
"""
Conditionally sync a repo, based on type.
"""
if repo.breed == "rhn":
return self.rhn_sync(repo)
elif repo.breed == "yum":
return self.yum_sync(repo)
elif repo.breed == "apt":
return self.apt_sync(repo)
elif repo.breed == "rsync":
return self.rsync_sync(repo)
else:
utils.die(self.logger,"unable to sync repo (%s), unknown or unsupported repo type (%s)" % (repo.name, repo.breed))
# ====================================================================================
def createrepo_walker(self, repo, dirname, fnames):
"""
Used to run createrepo on a copied Yum mirror.
"""
if os.path.exists(dirname) or repo['breed'] == 'rsync':
utils.remove_yum_olddata(dirname)
# add any repo metadata we can use
mdoptions = []
if os.path.isfile("%s/.origin/repomd.xml" % (dirname)):
if not HAS_YUM:
utils.die(self.logger,"yum is required to use this feature")
rmd = yum.repoMDObject.RepoMD('', "%s/.origin/repomd.xml" % (dirname))
if rmd.repoData.has_key("group"):
groupmdfile = rmd.getData("group").location[1]
mdoptions.append("-g %s" % groupmdfile)
if rmd.repoData.has_key("prestodelta"):
# need createrepo >= 0.9.7 to add deltas
if utils.check_dist() == "redhat" or utils.check_dist() == "suse":
cmd = "/usr/bin/rpmquery --queryformat=%{VERSION} createrepo"
createrepo_ver = utils.subprocess_get(self.logger, cmd)
if createrepo_ver >= "0.9.7":
mdoptions.append("--deltas")
else:
self.logger.error("this repo has presto metadata; you must upgrade createrepo to >= 0.9.7 first and then need to resync the repo through cobbler.")
blended = utils.blender(self.api, False, repo)
flags = blended.get("createrepo_flags","(ERROR: FLAGS)")
try:
# BOOKMARK
cmd = "createrepo %s %s %s" % (" ".join(mdoptions), flags, dirname)
utils.subprocess_call(self.logger, cmd)
except:
utils.log_exc(self.logger)
self.logger.error("createrepo failed.")
del fnames[:] # we're in the right place
# ====================================================================================
def rsync_sync(self, repo):
"""
Handle copying of rsync:// and rsync-over-ssh repos.
"""
repo_mirror = repo.mirror
if not repo.mirror_locally:
utils.die(self.logger,"rsync:// urls must be mirrored locally, yum cannot access them directly")
if repo.rpm_list != "" and repo.rpm_list != []:
self.logger.warning("--rpm-list is not supported for rsync'd repositories")
# FIXME: don't hardcode
dest_path = os.path.join(self.settings.webdir+"/repo_mirror", repo.name)
spacer = ""
if not repo.mirror.startswith("rsync://") and not repo.mirror.startswith("/"):
spacer = "-e ssh"
if not repo.mirror.endswith("/"):
repo.mirror = "%s/" % repo.mirror
# FIXME: wrapper for subprocess that logs to logger
cmd = "rsync -rltDv %s --delete --exclude-from=/etc/cobbler/rsync.exclude %s %s" % (spacer, repo.mirror, dest_path)
rc = utils.subprocess_call(self.logger, cmd)
if rc !=0:
utils.die(self.logger,"cobbler reposync failed")
os.path.walk(dest_path, self.createrepo_walker, repo)
self.create_local_file(dest_path, repo)
# ====================================================================================
def rhn_sync(self, repo):
"""
Handle mirroring of RHN repos.
"""
repo_mirror = repo.mirror
# FIXME? warn about not having yum-utils. We don't want to require it in the package because
# RHEL4 and RHEL5U0 don't have it.
if not os.path.exists("/usr/bin/reposync"):
utils.die(self.logger,"no /usr/bin/reposync found, please install yum-utils")
cmd = "" # command to run
has_rpm_list = False # flag indicating not to pull the whole repo
# detect cases that require special handling
if repo.rpm_list != "" and repo.rpm_list != []:
has_rpm_list = True
# create yum config file for use by reposync
# FIXME: don't hardcode
dest_path = os.path.join(self.settings.webdir+"/repo_mirror", repo.name)
temp_path = os.path.join(dest_path, ".origin")
if not os.path.isdir(temp_path):
# FIXME: there's a chance this might break the RHN D/L case
os.makedirs(temp_path)
# how we invoke yum-utils depends on whether this is RHN content or not.
# this is the somewhat more-complex RHN case.
# NOTE: this requires that you have entitlements for the server and you give the mirror as rhn://$channelname
if not repo.mirror_locally:
utils.die("rhn:// repos do not work with --mirror-locally=1")
if has_rpm_list:
self.logger.warning("warning: --rpm-list is not supported for RHN content")
rest = repo.mirror[6:] # everything after rhn://
cmd = "/usr/bin/reposync %s -r %s --download_path=%s" % (self.rflags, rest, self.settings.webdir+"/repo_mirror")
if repo.name != rest:
args = { "name" : repo.name, "rest" : rest }
utils.die(self.logger,"ERROR: repository %(name)s needs to be renamed %(rest)s as the name of the cobbler repository must match the name of the RHN channel" % args)
if repo.arch == "i386":
# counter-intuitive, but we want the newish kernels too
repo.arch = "i686"
if repo.arch != "":
cmd = "%s -a %s" % (cmd, repo.arch)
# now regardless of whether we're doing yumdownloader or reposync
# or whether the repo was http://, ftp://, or rhn://, execute all queued
# commands here. Any failure at any point stops the operation.
if repo.mirror_locally:
rc = utils.subprocess_call(self.logger, cmd)
# Don't die if reposync fails, it is logged
# if rc !=0:
# utils.die(self.logger,"cobbler reposync failed")
# some more special case handling for RHN.
# create the config file now, because the directory didn't exist earlier
temp_file = self.create_local_file(temp_path, repo, output=False)
# now run createrepo to rebuild the index
if repo.mirror_locally:
os.path.walk(dest_path, self.createrepo_walker, repo)
# create the config file the hosts will use to access the repository.
self.create_local_file(dest_path, repo)
# ====================================================================================
def yum_sync(self, repo):
"""
Handle copying of http:// and ftp:// yum repos.
"""
repo_mirror = repo.mirror
# warn about not having yum-utils. We don't want to require it in the package because
# RHEL4 and RHEL5U0 don't have it.
if not os.path.exists("/usr/bin/reposync"):
utils.die(self.logger,"no /usr/bin/reposync found, please install yum-utils")
cmd = "" # command to run
has_rpm_list = False # flag indicating not to pull the whole repo
# detect cases that require special handling
if repo.rpm_list != "" and repo.rpm_list != []:
has_rpm_list = True
# create yum config file for use by reposync
dest_path = os.path.join(self.settings.webdir+"/repo_mirror", repo.name)
temp_path = os.path.join(dest_path, ".origin")
if not os.path.isdir(temp_path) and repo.mirror_locally:
# FIXME: there's a chance this might break the RHN D/L case
os.makedirs(temp_path)
# create the config file that yum will use for the copying
if repo.mirror_locally:
temp_file = self.create_local_file(temp_path, repo, output=False)
if not has_rpm_list and repo.mirror_locally:
# if we have not requested only certain RPMs, use reposync
cmd = "/usr/bin/reposync %s --config=%s --repoid=%s --download_path=%s" % (self.rflags, temp_file, repo.name, self.settings.webdir+"/repo_mirror")
if repo.arch != "":
if repo.arch == "x86":
repo.arch = "i386" # FIX potential arch errors
if repo.arch == "i386":
# counter-intuitive, but we want the newish kernels too
cmd = "%s -a i686" % (cmd)
else:
cmd = "%s -a %s" % (cmd, repo.arch)
elif repo.mirror_locally:
# create the output directory if it doesn't exist
if not os.path.exists(dest_path):
os.makedirs(dest_path)
use_source = ""
if repo.arch == "src":
use_source = "--source"
# older yumdownloader sometimes explodes on --resolvedeps
# if this happens to you, upgrade yum & yum-utils
extra_flags = self.settings.yumdownloader_flags
cmd = "/usr/bin/yumdownloader %s %s --disablerepo=* --enablerepo=%s -c %s --destdir=%s %s" % (extra_flags, use_source, repo.name, temp_file, dest_path, " ".join(repo.rpm_list))
# now regardless of whether we're doing yumdownloader or reposync
# or whether the repo was http://, ftp://, or rhn://, execute all queued
# commands here. Any failure at any point stops the operation.
if repo.mirror_locally:
rc = utils.subprocess_call(self.logger, cmd)
if rc !=0:
utils.die(self.logger,"cobbler reposync failed")
repodata_path = os.path.join(dest_path, "repodata")
if not os.path.exists("/usr/bin/wget"):
utils.die(self.logger,"no /usr/bin/wget found, please install wget")
# grab repomd.xml and use it to download any metadata we can use
cmd2 = "/usr/bin/wget -q %s/repodata/repomd.xml -O %s/repomd.xml" % (repo_mirror, temp_path)
rc = utils.subprocess_call(self.logger,cmd2)
if rc == 0:
# create our repodata directory now, as any extra metadata we're
# about to download probably lives there
if not os.path.isdir(repodata_path):
os.makedirs(repodata_path)
rmd = yum.repoMDObject.RepoMD('', "%s/repomd.xml" % (temp_path))
for mdtype in rmd.repoData.keys():
# don't download metadata files that are created by default
if mdtype not in ["primary", "primary_db", "filelists", "filelists_db", "other", "other_db"]:
mdfile = rmd.getData(mdtype).location[1]
cmd3 = "/usr/bin/wget -q %s/%s -O %s/%s" % (repo_mirror, mdfile, dest_path, mdfile)
utils.subprocess_call(self.logger,cmd3)
if rc !=0:
utils.die(self.logger,"wget failed")
# now run createrepo to rebuild the index
if repo.mirror_locally:
os.path.walk(dest_path, self.createrepo_walker, repo)
# create the config file the hosts will use to access the repository.
self.create_local_file(dest_path, repo)
# ====================================================================================
def apt_sync(self, repo):
"""
Handle copying of http:// and ftp:// debian repos.
"""
repo_mirror = repo.mirror
# warn about not having mirror program.
mirror_program = "/usr/bin/debmirror"
if not os.path.exists(mirror_program):
utils.die(self.logger,"no %s found, please install it"%(mirror_program))
cmd = "" # command to run
has_rpm_list = False # flag indicating not to pull the whole repo
# detect cases that require special handling
if repo.rpm_list != "" and repo.rpm_list != []:
utils.die(self.logger,"has_rpm_list not yet supported on apt repos")
if not repo.arch:
utils.die(self.logger,"Architecture is required for apt repositories")
# built destination path for the repo
dest_path = os.path.join("/var/www/cobbler/repo_mirror", repo.name)
if repo.mirror_locally:
# NOTE: Dropping @@suite@@ replace as it is also dropped from
# from manage_import_debian_ubuntu.py due that repo has no os_version
# attribute. If it is added again it will break the Web UI!
#mirror = repo.mirror.replace("@@suite@@",repo.os_version)
mirror = repo.mirror
idx = mirror.find("://")
method = mirror[:idx]
mirror = mirror[idx+3:]
idx = mirror.find("/")
host = mirror[:idx]
mirror = mirror[idx+1:]
idx = mirror.rfind("/dists/")
suite = mirror[idx+7:]
mirror = mirror[:idx]
mirror_data = "--method=%s --host=%s --root=%s --dist=%s " % ( method , host , mirror , suite )
# FIXME : flags should come from repo instead of being hardcoded
rflags = "--passive --nocleanup"
for x in repo.yumopts:
if repo.yumopts[x]:
rflags += " %s %s" % ( x , repo.yumopts[x] )
else:
rflags += " %s" % x
cmd = "%s %s %s %s" % (mirror_program, rflags, mirror_data, dest_path)
if repo.arch == "src":
cmd = "%s --source" % cmd
else:
arch = repo.arch
if arch == "x86":
arch = "i386" # FIX potential arch errors
if arch == "x86_64":
arch = "amd64" # FIX potential arch errors
cmd = "%s --nosource -a %s" % (cmd, arch)
# Set's an environment variable for subprocess, otherwise debmirror will fail
# as it needs this variable to exist.
# FIXME: might this break anything? So far it doesn't
os.putenv("HOME", "/var/lib/cobbler")
rc = utils.subprocess_call(self.logger, cmd)
if rc !=0:
utils.die(self.logger,"cobbler reposync failed")
def create_local_file(self, dest_path, repo, output=True):
"""
Creates Yum config files for use by reposync
Two uses:
(A) output=True, Create local files that can be used with yum on provisioned clients to make use of this mirror.
(B) output=False, Create a temporary file for yum to feed into yum for mirroring
"""
# the output case will generate repo configuration files which are usable
# for the installed systems. They need to be made compatible with --server-override
# which means they are actually templates, which need to be rendered by a cobbler-sync
# on per profile/system basis.
if output:
fname = os.path.join(dest_path,"config.repo")
else:
fname = os.path.join(dest_path, "%s.repo" % repo.name)
self.logger.debug("creating: %s" % fname)
if not os.path.exists(dest_path):
utils.mkdir(dest_path)
config_file = open(fname, "w+")
config_file.write("[%s]\n" % repo.name)
config_file.write("name=%s\n" % repo.name)
optenabled = False
optgpgcheck = False
if output:
if repo.mirror_locally:
line = "baseurl=http://${server}/cobbler/repo_mirror/%s\n" % (repo.name)
else:
mstr = repo.mirror
if mstr.startswith("/"):
mstr = "file://%s" % mstr
line = "baseurl=%s\n" % mstr
config_file.write(line)
# user may have options specific to certain yum plugins
# add them to the file
for x in repo.yumopts:
config_file.write("%s=%s\n" % (x, repo.yumopts[x]))
if x == "enabled":
optenabled = True
if x == "gpgcheck":
optgpgcheck = True
else:
mstr = repo.mirror
if mstr.startswith("/"):
mstr = "file://%s" % mstr
line = "baseurl=%s\n" % mstr
if self.settings.http_port not in (80, '80'):
http_server = "%s:%s" % (self.settings.server, self.settings.http_port)
else:
http_server = self.settings.server
line = line.replace("@@server@@",http_server)
config_file.write(line)
if not optenabled:
config_file.write("enabled=1\n")
config_file.write("priority=%s\n" % repo.priority)
# FIXME: potentially might want a way to turn this on/off on a per-repo basis
if not optgpgcheck:
config_file.write("gpgcheck=0\n")
config_file.close()
return fname
# ==================================================================================
def update_permissions(self, repo_path):
"""
Verifies that permissions and contexts after an rsync are as expected.
Sending proper rsync flags should prevent the need for this, though this is largely
a safeguard.
"""
# all_path = os.path.join(repo_path, "*")
cmd1 = "chown -R root:www-data %s" % repo_path
utils.subprocess_call(self.logger, cmd1)
cmd2 = "chmod -R 755 %s" % repo_path
utils.subprocess_call(self.logger, cmd2)
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