install: add restart_dirsrv for directory server restarts

* Create a utility function to restart a directory server and
    reconnect the api.Backend.ldap2 connection.
* Use restart_dirsrv instead of knownservices.dirsrv.restart to
    ensure api.Backend.ldap2 is reconnected.

https://fedorahosted.org/freeipa/ticket/6461

Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

ipaserver/install/adtrustinstance.py

@@ -721,7 +721,7 @@ class ADTRUSTInstance(service.Service):
 
     def __restart_dirsrv(self):
         try:
-            services.knownservices.dirsrv.restart()
+            installutils.restart_dirsrv()
         except Exception:
             pass
 

ipaserver/install/ca.py

@@ -215,14 +215,7 @@ def install_step_1(standalone, replica_config, options):
                                   cert, nickname, trust_flags[nickname],
                                   config_ipa=True, config_compat=True)
 
-
-        api.Backend.ldap2.disconnect()
-
-        # Restart DS
-        services.knownservices.dirsrv.restart(serverid)
-
-        api.Backend.ldap2.connect(bind_dn=DN(('cn', 'Directory Manager')),
-                                  bind_pw=dm_password)
+        installutils.restart_dirsrv()
 
         # Store DS CA cert in Dogtag NSS database
         dogtagdb = certs.CertDB(realm_name, nssdir=paths.PKI_TOMCAT_ALIAS_DIR)

ipaserver/install/cainstance.py

@@ -1583,7 +1583,7 @@ def install_replica_ca(config, postinstall=False, ra_p12=None):
     service.print_msg("Restarting the directory and certificate servers")
     ca.stop('pki-tomcat')
 
-    services.knownservices.dirsrv.restart()
+    installutils.restart_dirsrv()
 
     ca.start('pki-tomcat')
 

ipaserver/install/installutils.py

@@ -51,7 +51,7 @@ from ipapython.admintool import ScriptError
 from ipapython.ipa_log_manager import root_logger
 from ipalib.util import validate_hostname
 from ipapython import config
-from ipalib import errors, x509
+from ipalib import api, errors, x509
 from ipapython.dn import DN
 from ipaserver.install import certs, service, sysupgrade
 from ipaplatform import services
@@ -1399,3 +1399,14 @@ def remove_ccache(ccache_path=None, run_as=None):
     except ipautil.CalledProcessError as e:
         root_logger.warning(
             "Failed to clear Kerberos credentials cache: {}".format(e))
+
+
+def restart_dirsrv(instance_name="", capture_output=True):
+    """
+    Restart Directory server and perform ldap reconnect.
+    """
+    api.Backend.ldap2.disconnect()
+    services.knownservices.dirsrv.restart(instance_name=instance_name,
+                                          capture_output=capture_output,
+                                          wait=True, ldapi=True)
+    api.Backend.ldap2.connect()

ipaserver/install/krainstance.py

@@ -445,7 +445,7 @@ def install_replica_kra(config, postinstall=False):
 
     service.print_msg("Restarting the directory and KRA servers")
     _kra.stop('pki-tomcat')
-    services.knownservices.dirsrv.restart()
+    installutils.restart_dirsrv()
     _kra.start('pki-tomcat')
 
     return _kra

ipaserver/install/ldapupdate.py

@@ -40,7 +40,6 @@ from ipalib import errors
 from ipalib import api, create_api
 from ipalib import constants
 from ipaplatform.paths import paths
-from ipaplatform import services
 from ipapython.dn import DN
 from ipapython.ipa_log_manager import log_mgr
 
@@ -926,6 +925,5 @@ class LDAPUpdate(object):
             self.conn = None
 
     def restart_ds(self):
-        dirsrv = services.knownservices.dirsrv
         self.log.debug('Restarting directory server to apply updates')
-        dirsrv.restart(ldapi=self.ldapi)
+        installutils.restart_dirsrv()

ipaserver/install/replication.py

@@ -35,8 +35,8 @@ from ipapython.ipa_log_manager import root_logger
 from ipapython import ipautil, ipaldap
 from ipapython.admintool import ScriptError
 from ipapython.dn import DN
-from ipaplatform import services
 from ipaplatform.paths import paths
+from ipaserver.install import installutils
 
 if six.PY3:
     unicode = str
@@ -130,7 +130,7 @@ def enable_replication_version_checking(realm, dirman_passwd):
         conn.modify_s(entry.dn, [(ldap.MOD_REPLACE, 'nsslapd-pluginenabled', 'on')])
         conn.unbind()
         serverid = "-".join(realm.split("."))
-        services.knownservices.dirsrv.restart(instance_name=serverid)
+        installutils.restart_dirsrv(serverid)
     else:
         conn.unbind()