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"""
Validates whether the system is reasonably well configured for
serving up content. This is the code behind 'cobbler check'.
Copyright 2006, 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 re
import sub_process
import action_sync
from rhpl.translate import _, N_, textdomain, utf8
class BootCheck:
def __init__(self,config):
"""
Constructor
"""
self.config = config
self.settings = config.settings()
def run(self):
"""
Returns None if there are no errors, otherwise returns a list
of things to correct prior to running application 'for real'.
(The CLI usage is "cobbler check" before "cobbler sync")
"""
status = []
self.check_name(status)
if self.settings.manage_dhcp:
mode = self.settings.manage_dhcp_mode.lower()
if mode == "isc":
self.check_dhcpd_bin(status)
self.check_dhcpd_conf(status)
self.check_service(status,"dhcpd")
elif mode == "dnsmasq":
self.check_dnsmasq_bin(status)
self.check_service(status,"dnsmasq")
else:
status.append(_("manage_dhcp_mode in /var/lib/cobbler/settings should be 'isc' or 'dnsmasq'"))
self.check_service(status, "cobblerd")
self.check_bootloaders(status)
self.check_tftpd_bin(status)
self.check_tftpd_dir(status)
self.check_tftpd_conf(status)
self.check_httpd(status)
self.check_iptables(status)
self.check_yum(status)
return status
def check_service(self, status, which):
if os.path.exists("/etc/rc.d/init.d/%s" % which):
rc = sub_process.call("/sbin/service %s status >/dev/null 2>/dev/null" % which, shell=True)
if rc != 0:
status.append(_("service %s is not running") % which)
def check_iptables(self, status):
if os.path.exists("/etc/rc.d/init.d/iptables"):
rc = sub_process.call("/sbin/service iptables status >/dev/null 2>/dev/null", shell=True)
if rc == 0:
status.append(_("since iptables may be running, ensure 69, 80, %(syslog)s, and %(xmlrpc)s are unblocked") % { "syslog" : self.settings.syslog_port, "xmlrpc" : self.settings.xmlrpc_port })
def check_yum(self,status):
if not os.path.exists("/usr/bin/createrepo"):
status.append(_("createrepo package is not installed, needed for cobbler import and cobbler reposync, install createrepo?"))
if not os.path.exists("/usr/bin/reposync"):
status.append(_("reposync is not installed, need for cobbler reposync, install/upgrade yum-utils?"))
if not os.path.exists("/usr/bin/yumdownloader"):
status.append(_("yumdownloader is not installed, needed for cobbler repo add with --rpm-list parameter, install/upgrade yum-utils?"))
def check_name(self,status):
"""
If the server name in the config file is still set to localhost
kickstarts run from koan will not have proper kernel line
parameters.
"""
if self.settings.server == "127.0.0.1":
status.append(_("The 'server' field in /var/lib/cobbler/settings must be set to something other than localhost, or kickstarting features will not work. This should be a resolvable hostname or IP for the boot server as reachable by all machines that will use it."))
if self.settings.next_server == "127.0.0.1":
status.append(_("For PXE to be functional, the 'next_server' field in /var/lib/cobbler/settings must be set to something other than 127.0.0.1, and should match the IP of the boot server on the PXE network."))
def check_httpd(self,status):
"""
Check if Apache is installed.
"""
if not os.path.exists(self.settings.httpd_bin):
status.append(_("Apache doesn't appear to be installed"))
else:
self.check_service(status,"httpd")
def check_dhcpd_bin(self,status):
"""
Check if dhcpd is installed
"""
if not os.path.exists(self.settings.dhcpd_bin):
status.append(_("dhcpd isn't installed, but is enabled in /var/lib/cobbler/settings"))
def check_dnsmasq_bin(self,status):
"""
Check if dnsmasq is installed
"""
if not os.path.exists(self.settings.dnsmasq_bin):
status.append(_("dnsmasq isn't installed, but is enabled in /var/lib/cobbler/settings"))
def check_bootloaders(self,status):
"""
Check if network bootloaders are installed
"""
for loader in self.settings.bootloaders.keys():
filename = self.settings.bootloaders[loader]
if not os.path.exists(filename):
if filename.find("pxelinux") != -1:
status.append(_("syslinux should be installed but is not, expecting to find something at %s" % filename))
else:
status.append(_("bootloader missing: %s" % filename))
return
def check_tftpd_bin(self,status):
"""
Check if tftpd is installed
"""
if not os.path.exists(self.settings.tftpd_bin):
status.append(_("tftp-server is not installed."))
else:
self.check_service(status,"xinetd")
def check_tftpd_dir(self,status):
"""
Check if cobbler.conf's tftpboot directory exists
"""
if not os.path.exists(self.settings.tftpboot):
status.append(_("please create directory: %(dirname)s") % { "dirname" : self.settings.tftpboot })
def check_tftpd_conf(self,status):
"""
Check that configured tftpd boot directory matches with actual
Check that tftpd is enabled to autostart
"""
if os.path.exists(self.settings.tftpd_conf):
f = open(self.settings.tftpd_conf)
re_disable = re.compile(r'disable.*=.*yes')
found_bootdir = False
for line in f.readlines():
if re_disable.search(line):
status.append(_("change 'disable' to 'no' in %(file)s") % { "file" : self.settings.tftpd_conf })
if line.find("-s %s" % self.settings.tftpboot) != -1:
found_bootdir = True
if not found_bootdir:
status.append(_("change 'server_args' to '-s %(args)s' in %(file)s") % { "file" : "/etc/xinetd.d/tftp", "args" : self.settings.tftpboot })
else:
status.append(_("file %(file)s does not exist") % { "file" : self.settings.tftpd_conf })
def check_dhcpd_conf(self,status):
"""
NOTE: this code only applies if cobbler is *NOT* set to generate
a dhcp.conf file
Check that dhcpd *appears* to be configured for pxe booting.
We can't assure file correctness. Since a cobbler user might
have dhcp on another server, it's okay if it's not there and/or
not configured correctly according to automated scans.
"""
if not (self.settings.manage_dhcp == 0):
return
if os.path.exists(self.settings.dhcpd_conf):
match_next = False
match_file = False
f = open(self.settings.dhcpd_conf)
for line in f.readlines():
if line.find("next-server") != -1:
match_next = True
if line.find("filename") != -1:
match_file = True
if not match_next:
status.append(_("expecting next-server entry in %(file)s") % { "file" : self.settings.dhcpd_conf })
if not match_file:
status.append(_("missing file: %(file)s") % { "file" : self.settings.dhcpd_conf })
else:
status.append(_("missing file: %(file)s") % { "file" : self.settings.dhcpd_conf })
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