diff options
Diffstat (limited to 'cobbler/modules')
| -rw-r--r-- | cobbler/modules/manage_dnsmasq.py | 191 | ||||
| -rw-r--r-- | cobbler/modules/manage_isc_and_bind.py | 425 |
2 files changed, 616 insertions, 0 deletions
diff --git a/cobbler/modules/manage_dnsmasq.py b/cobbler/modules/manage_dnsmasq.py new file mode 100644 index 0000000..d37a2d4 --- /dev/null +++ b/cobbler/modules/manage_dnsmasq.py @@ -0,0 +1,191 @@ + +""" +This is some of the code behind 'cobbler sync'. + +Copyright 2006-2008, Red Hat, Inc +Michael DeHaan <mdehaan@redhat.com> +John Eckersberg <jeckersb@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 sub_process +import sys +import glob +import traceback +import errno +import popen2 +from shlex import shlex +import utils +from cexceptions import * +import templar +import item_distro +import item_profile +import item_repo +import item_system +from utils import _ + +def register(): + return "manage" + +class DnsmasqManager: + """ + Handles conversion of internal state to the tftpboot tree layout + """ + + def __init__(self,config,verbose=False,dhcp=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.dns = dns + + def what(self): + return "dnsmasq" + + def write_dhcp_lease(self,port,host,ip,mac): + pass + + def remove_dhcp_lease(self,port,host): + pass + + + def write_dhcp_file(self): + """ + DHCP files are written when manage_dhcp is set in + /var/lib/cobbler/settings. + """ + + settings_file = self.settings.dnsmasq_conf + template_file = "/etc/cobbler/dnsmasq.template" + + try: + f2 = open(template_file,"r") + except: + raise CX(_("error writing template to file: %s") % template_file) + template_data = "" + template_data = f2.read() + f2.close() + + # build each per-system definition + # as configured, this only works for ISC, patches accepted + # from those that care about Itanium. elilo seems to be unmaintained + # so additional maintaince in other areas may be required to keep + # this working. + + elilo = os.path.basename(self.settings.bootloaders["ia64"]) + + system_definitions = {} + counter = 0 + + # we used to just loop through each system, but now we must loop + # through each network interface of each system. + + for system in self.systems: + profile = system.get_conceptual_parent() + distro = profile.get_conceptual_parent() + for (name, interface) in system.interfaces.iteritems(): + + mac = interface["mac_address"] + ip = interface["ip_address"] + host = interface["hostname"] + + if mac is None or mac == "": + # can't write a DHCP entry for this system + continue + + counter = counter + 1 + systxt = "" + + # dnsmasq. don't have to write IP and other info here, but we do tag + # each MAC based on the arch of it's distro, if it needs something other + # than pxelinux.0 -- for these arches, and these arches only, a dnsmasq + # reload (full "cobbler sync") would be required after adding the system + # to cobbler, just to tag this relationship. + + if ip is not None and ip != "": + if distro.arch.lower() == "ia64": + systxt = "dhcp-host=net:ia64," + ip + "\n" + # support for other arches needs modifications here + else: + systxt = "" + + dhcp_tag = interface["dhcp_tag"] + if dhcp_tag == "": + dhcp_tag = "default" + + if not system_definitions.has_key(dhcp_tag): + system_definitions[dhcp_tag] = "" + system_definitions[dhcp_tag] = system_definitions[dhcp_tag] + systxt + + # we are now done with the looping through each interface of each system + + metadata = { + "omapi_enabled" : self.settings.omapi_enabled, + "omapi_port" : self.settings.omapi_port, + "insert_cobbler_system_definitions" : system_definitions.get("default",""), + "date" : time.asctime(time.gmtime()), + "cobbler_server" : self.settings.server, + "next_server" : self.settings.next_server, + "elilo" : elilo + } + + # now add in other DHCP expansions that are not tagged with "default" + for x in system_definitions.keys(): + if x == "default": + continue + metadata["insert_cobbler_system_definitions_%s" % x] = system_definitions[x] + + self.templar.render(template_data, metadata, settings_file, None) + + def regen_ethers(self): + # dnsmasq knows how to read this database of MACs -> IPs, so we'll keep it up to date + # every time we add a system. + # read 'man ethers' for format info + fh = open("/etc/ethers","w+") + for sys in self.systems: + for (name, interface) in sys.interfaces.iteritems(): + mac = interface["mac_address"] + ip = interface["ip_address"] + if mac is None or mac == "": + # can't write this w/o a MAC address + continue + if ip is not None and ip != "": + fh.write(mac.upper() + "\t" + ip + "\n") + fh.close() + + def regen_hosts(self): + # dnsmasq knows how to read this database for host info + # (other things may also make use of this later) + fh = open("/var/lib/cobbler/cobbler_hosts","w+") + for sys in self.systems: + for (name, interface) in sys.interfaces.iteritems(): + mac = interface["mac_address"] + host = interface["hostname"] + ip = interface["ip_address"] + if mac is None or mac == "": + continue + if host is not None and host != "" and ip is not None and ip != "": + fh.write(ip + "\t" + host + "\n") + fh.close() + +def get_manager(config): + return DnsmasqManager(config) + diff --git a/cobbler/modules/manage_isc_and_bind.py b/cobbler/modules/manage_isc_and_bind.py new file mode 100644 index 0000000..bc3a338 --- /dev/null +++ b/cobbler/modules/manage_isc_and_bind.py @@ -0,0 +1,425 @@ +""" +This is some of the code behind 'cobbler sync'. + +Copyright 2006-2008, Red Hat, Inc +Michael DeHaan <mdehaan@redhat.com> +John Eckersberg <jeckersb@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 sub_process +import sys +import glob +import traceback +import errno +import popen2 +from shlex import shlex + + +import utils +from cexceptions import * +import templar + +import item_distro +import item_profile +import item_repo +import item_system + +from utils import _ + + +def register(): + """ + The mandatory cobbler module registration hook. + """ + return "manage" + + +class IscAndBindManager: + + def what(self): + return "isc_and_bind" + + def __init__(self,config,verbose=False): + """ + 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) + + def write_dhcp_lease(self,port,host,ip,mac): + """ + Use DHCP's API to create a DHCP entry in the + /var/lib/dhcpd/dhcpd.leases file + #Code from http://svn.osgdc.org/browse/kusu/kusu + # /trunk/src/kits/base/packages/kusu-base-installer/lib/kusu/nodefun.py?r=3025 + # FIXME: should use subprocess + """ + try: + fromchild, tochild = popen2.popen2("/usr/bin/omshell") + tochild.write("port %s\n" % port) + tochild.flush() + tochild.write("connect\n") + tochild.flush() + tochild.write("new host\n") + tochild.flush() + tochild.write('set name = \"%s\"\n' % host) + tochild.flush() + tochild.write("set ip-address = %s\n" % ip) + tochild.flush() + tochild.write("set hardware-address = %s\n" % mac) + tochild.flush() + tochild.write("set hardware-type = 1\n") + tochild.flush() + tochild.write("create\n") + tochild.flush() + tochild.close() + fromchild.close() + except IOError: + # FIXME: just catch 32 (broken pipe) and show a warning + pass + + def remove_dhcp_lease(self,port,host): + """ + removeDHCPLease(port,host) + Use DHCP's API to delete a DHCP entry in + the /var/lib/dhcpd/dhcpd.leases file + """ + fromchild, tochild = popen2.popen2("/usr/bin/omshell") + try: + tochild.write("port %s\n" % port) + tochild.flush() + tochild.write("connect\n") + tochild.flush() + tochild.write("new host\n") + tochild.flush() + tochild.write('set name = \"%s\"\n' % host) + tochild.flush() + tochild.write("open\n") # opens register with host information + tochild.flush() + tochild.write("remove\n") + tochild.flush() + tochild.close() + fromchild.close() + except IOError: + # FIXME: convert this to subprocess. + # FIXME: catch specific errors only (32/broken pipe) + pass + + def write_dhcp_file(self): + """ + DHCP files are written when manage_dhcp is set in + /var/lib/cobbler/settings. + """ + + settings_file = self.settings.dhcpd_conf + template_file = "/etc/cobbler/dhcp.template" + mode = self.settings.manage_dhcp_mode.lower() + + try: + f2 = open(template_file,"r") + except: + raise CX(_("error writing template to file: %s") % template_file) + template_data = "" + template_data = f2.read() + f2.close() + + # build each per-system definition + # as configured, this only works for ISC, patches accepted + # from those that care about Itanium. elilo seems to be unmaintained + # so additional maintaince in other areas may be required to keep + # this working. + + elilo = os.path.basename(self.settings.bootloaders["ia64"]) + + system_definitions = {} + counter = 0 + + + # Clean system definitions in /var/lib/dhcpd/dhcpd.leases just in + # case to avoid conflicts with the hosts we're defining and to clean + # possible removed hosts (only if using OMAPI) + if self.settings.omapi_enabled and self.settings.omapi_port: + if os.path.exists("/var/lib/dhcpd/dhcpd.leases"): + file = open('/var/lib/dhcpd/dhcpd.leases') + item = shlex(file) + while 1: + elem = item.get_token() + if not elem: + break + if elem == 'host': + hostremove = item.get_token() + self.removeDHCPLease(self.settings.omapi_port,hostremove) + + # we used to just loop through each system, but now we must loop + # through each network interface of each system. + + for system in self.systems: + profile = system.get_conceptual_parent() + distro = profile.get_conceptual_parent() + for (name, interface) in system.interfaces.iteritems(): + + mac = interface["mac_address"] + ip = interface["ip_address"] + host = interface["hostname"] + + if mac is None or mac == "": + # can't write a DHCP entry for this system + continue + + counter = counter + 1 + systxt = "" + + + # the label the entry after the hostname if possible + if host is not None and host != "": + systxt = "\nhost %s {\n" % host + if self.settings.isc_set_host_name: + systxt = systxt + " option host-name = \"%s\";\n" % host + else: + systxt = "\nhost generic%d {\n" % counter + + if distro.arch == "ia64": + # can't use pxelinux.0 anymore + systxt = systxt + " filename \"/%s\";\n" % elilo + systxt = systxt + " hardware ethernet %s;\n" % mac + if ip is not None and ip != "": + systxt = systxt + " fixed-address %s;\n" % ip + systxt = systxt + "}\n" + + # If we have all values defined and we're using omapi, + # we will just create entries dinamically into DHCPD + # without requiring a restart (but file will be written + # as usual for having it working after restart) + + if ip is not None and ip != "": + if mac is not None and mac != "": + if host is not None and host != "": + if self.settings.omapi_enabled and self.settings.omapi_port: + self.removeDHCPLease(self.settings.omapi_port,host) + self.writeDHCPLease(self.settings.omapi_port,host,ip,mac) + + dhcp_tag = interface["dhcp_tag"] + if dhcp_tag == "": + dhcp_tag = "default" + + if not system_definitions.has_key(dhcp_tag): + system_definitions[dhcp_tag] = "" + system_definitions[dhcp_tag] = system_definitions[dhcp_tag] + systxt + + # we are now done with the looping through each interface of each system + + metadata = { + "omapi_enabled" : self.settings.omapi_enabled, + "omapi_port" : self.settings.omapi_port, + "insert_cobbler_system_definitions" : system_definitions.get("default",""), + "date" : time.asctime(time.gmtime()), + "cobbler_server" : self.settings.server, + "next_server" : self.settings.next_server, + "elilo" : elilo + } + + # now add in other DHCP expansions that are not tagged with "default" + for x in system_definitions.keys(): + if x == "default": + continue + metadata["insert_cobbler_system_definitions_%s" % x] = system_definitions[x] + + self.templar.render(template_data, metadata, settings_file, None) + + def regen_ethers(self): + pass # ISC/BIND do not use this + + + def regen_hosts(self): + pass # ISC/BIND do not use this + + + def __forward_zones(self): + """ + Returns ALL forward zones for all systems + """ + zones = {} + for sys in self.systems: + for (name, interface) in sys.interfaces.iteritems(): + host = interface["hostname"] + ip = interface["ip_address"] + if not host or not ip: + # gotsta have some hostname and ip or else! + continue + tokens = host.split('.') + zone = '.'.join(tokens[1:]) + if zones.has_key(zone): + zones[zone].append((host.split('.')[0], ip)) + else: + zones[zone] = [(host.split('.')[0], ip)] + return zones + + def __reverse_zones(self): + """ + Returns ALL reverse zones for all systems + """ + zones = {} + for sys in self.systems: + for (name, interface) in sys.interfaces.iteritems(): + host = interface["hostname"] + ip = interface["ip_address"] + if not host or not ip: + # gotsta have some hostname and ip or else! + continue + tokens = ip.split('.') + zone = '.'.join(tokens[0:3]) + if zones.has_key(zone): + zones[zone].append((tokens[3], host + '.')) + else: + zones[zone] = [(tokens[3], host + '.')] + return zones + + def __config_forward_zones(self): + """ + Returns only the forward zones which have systems and are defined + in the option manage_forward_zones + + Alternatively if manage_forward_zones is empty, return all systems + """ + all = self.__forward_zones() + want = self.settings.manage_forward_zones + if want == []: return all + ret = {} + for zone in all.keys(): + if zone in want: + ret[zone] = all[zone] + return ret + + def __config_reverse_zones(self): + """ + Returns only the reverse zones which have systems and are defined + in the option manage_reverse_zones + + Alternatively if manage_reverse_zones is empty, return all systems + """ + all = self.__reverse_zones() + want = self.settings.manage_reverse_zones + if want == []: return all + ret = {} + for zone in all.keys(): + if zone in want: + ret[zone] = all[zone] + return ret + + def __write_named_conf(self): + """ + Write out the named.conf main config file from the template. + """ + settings_file = self.settings.named_conf + template_file = "/etc/cobbler/named.template" + forward_zones = self.settings.manage_forward_zones + reverse_zones = self.settings.manage_reverse_zones + + metadata = {'zone_include': ''} + for zone in self.__config_forward_zones().keys(): + txt = """ +zone "%(zone)s." { + type master; + file "%(zone)s"; +}; +""" % {'zone': zone} + metadata['zone_include'] = metadata['zone_include'] + txt + + for zone in self.__config_reverse_zones().keys(): + tokens = zone.split('.') + tokens.reverse() + arpa = '.'.join(tokens) + '.in-addr.arpa' + txt = """ +zone "%(arpa)s." { + type master; + file "%(zone)s"; +}; +""" % {'arpa': arpa, 'zone': zone} + metadata['zone_include'] = metadata['zone_include'] + txt + + try: + f2 = open(template_file,"r") + except: + raise CX(_("error reading template from file: %s") % template_file) + template_data = "" + template_data = f2.read() + f2.close() + + self.templar.render(template_data, metadata, settings_file, None) + + def __write_zone_files(self): + """ + Write out the forward and reverse zone files for all the zones + defined in manage_forward_zones and manage_reverse_zones + """ + template_file = "/etc/cobbler/zone.template" + cobbler_server = self.settings.server + serial = int(time.time()) + forward = self.__config_forward_zones() + reverse = self.__config_reverse_zones() + + try: + f2 = open(template_file,"r") + except: + raise CX(_("error reading template from file: %s") % template_file) + template_data = "" + template_data = f2.read() + f2.close() + + for (zone, hosts) in forward.iteritems(): + metadata = { + 'cobbler_server': cobbler_server, + 'serial': serial, + 'host_record': '' + } + + for host in hosts: + txt = '%s\tIN\tA\t%s\n' % host + metadata['host_record'] = metadata['host_record'] + txt + + self.templar.render(template_data, metadata, '/var/named/' + zone, None) + + for (zone, hosts) in reverse.iteritems(): + metadata = { + 'cobbler_server': cobbler_server, + 'serial': serial, + 'host_record': '' + } + + for host in hosts: + txt = '%s\tIN\tPTR\t%s\n' % host + metadata['host_record'] = metadata['host_record'] + txt + + self.templar.render(template_data, metadata, '/var/named/' + zone, None) + + + def write_dns_files(self): + """ + BIND files are written when manage_dns is set in + /var/lib/cobbler/settings. + """ + + self.__write_named_conf() + self.__write_zone_files() + +def get_manager(config): + return IscAndBindManager(config) + |