# Author: Alexander Bokovoy # # Copyright (C) 2011 Red Hat # see file 'COPYING' for use and warranty information # # 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 3 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, see . # from ipapython import ipautil from ipapython.platform import base, redhat, systemd import os # All what we allow exporting directly from this module # Everything else is made available through these symbols when they directly imported into ipapython.services: # authconfig -- class reference for platform-specific implementation of authconfig(8) # service -- class reference for platform-specific implementation of a PlatformService class # knownservices -- factory instance to access named services IPA cares about, names are ipapython.services.wellknownservices # backup_and_replace_hostname -- platform-specific way to set hostname and make it persistent over reboots # restore_context -- platform-sepcific way to restore security context, if applicable __all__ = ['authconfig', 'service', 'knownservices', 'backup_and_replace_hostname', 'restore_context'] # For beginning just remap names to add .service # As more services will migrate to systemd, unit names will deviate and # mapping will be kept in this dictionary system_units = dict(map(lambda x: (x, "%s.service" % (x)), base.wellknownservices)) # Rewrite dirsrv and pki-cad services as they support instances via separate service generator # To make this working, one needs to have both foo@.service and foo.target -- the latter is used # when request should be coming for all instances (like stop). systemd, unfortunately, does not allow # to request action for all service instances at once if only foo@.service unit is available. # To add more, if any of those services need to be started/stopped automagically, one needs to manually # create symlinks in /etc/systemd/system/foo.target.wants/ (look into systemd.py's enable() code). system_units['dirsrv'] = 'dirsrv@.service' # Our directory server instance for PKI is dirsrv@PKI-IPA.service system_units['pkids'] = 'dirsrv@PKI-IPA.service' # Our PKI instance is pki-cad@pki-ca.service system_units['pki-cad'] = 'pki-cad@pki-ca.service' class Fedora16Service(systemd.SystemdService): def __init__(self, service_name): if service_name in system_units: service_name = system_units[service_name] else: if len(service_name.split('.')) == 1: # if service_name does not have a dot, it is not foo.service and not a foo.target # Thus, not correct service name for systemd, default to foo.service style then service_name = "%s.service" % (service_name) super(Fedora16Service, self).__init__(service_name) # Special handling of directory server service # LimitNOFILE needs to be increased or any value set in the directory for this value will fail # Read /lib/systemd/system/dirsrv@.service for details. # We do modification of LimitNOFILE on service.enable() but we also need to explicitly enable instances # to install proper symlinks as dirsrv.target.wants/ dependencies. Unfortunately, ipa-server-install # does not do explicit dirsrv.enable() because the service startup is handled by ipactl. # If we wouldn't do this, our instances will not be started as systemd would not have any clue # about instances (PKI-IPA and the domain we serve) at all. Thus, hook into dirsrv.restart(). class Fedora16DirectoryService(Fedora16Service): def enable(self, instance_name=""): super(Fedora16DirectoryService, self).enable(instance_name) srv_etc = os.path.join(self.SYSTEMD_ETC_PATH, self.service_name) if os.path.exists(srv_etc): # We need to enable LimitNOFILE=8192 in the dirsrv@.service # We rely on the fact that [Service] section is the last one # and if variable is not there, it will be added as the last line replacevars = {'LimitNOFILE':'8192'} ipautil.config_replace_variables(srv_etc, replacevars=replacevars) redhat.restore_context(srv_etc) ipautil.run(["/bin/systemctl", "--system", "daemon-reload"],raiseonerr=False) def restart(self, instance_name="", capture_output=True): if len(instance_name) > 0: elements = self.service_name.split("@") srv_etc = os.path.join(self.SYSTEMD_ETC_PATH, self.service_name) srv_tgt = os.path.join(self.SYSTEMD_ETC_PATH, self.SYSTEMD_SRV_TARGET % (elements[0])) srv_lnk = os.path.join(srv_tgt, self.service_instance(instance_name)) if not os.path.exists(srv_etc): self.enable(instance_name) elif not os.path.samefile(srv_etc, srv_lnk): os.unlink(srv_lnk) os.symlink(srv_etc, srv_lnk) super(Fedora16DirectoryService, self).restart(instance_name, capture_output=capture_output) # Enforce restart of IPA services when we do enable it # This gets around the fact that after ipa-server-install systemd thinks ipa.service is not yet started # but all services were actually started already. class Fedora16IPAService(Fedora16Service): def enable(self, instance_name=""): super(Fedora16IPAService, self).enable(instance_name) self.restart(instance_name) # Redirect directory server service through special sub-class due to its special handling of instances def f16_service(name): if name == 'dirsrv': return Fedora16DirectoryService(name) if name == 'ipa': return Fedora16IPAService(name) return Fedora16Service(name) class Fedora16Services(base.KnownServices): def __init__(self): services = dict() for s in base.wellknownservices: services[s] = f16_service(s) # Call base class constructor. This will lock services to read-only super(Fedora16Services, self).__init__(services) authconfig = redhat.authconfig service = f16_service knownservices = Fedora16Services() restore_context = redhat.restore_context backup_and_replace_hostname = redhat.backup_and_replace_hostname