Server Upgrade: Verify version and platform

Verify version and platform before upgrade or ipactl start|restart

Upgrade:
* do not allow upgrade on different platforms
* do not allow upgrade data with higher version than build has

Start:
* do not start services if platform mismatch
* do not start services if upgrade is needed
* do not start services if data with higher version than build has

New ipactl options:
--skip-version-check: do not validate IPA version
--ignore-service-failures (was --force): ignore if a service start fail
      and continue with starting other services
--force: combine --skip-version-check and --ignore-service-failures

https://fedorahosted.org/freeipa/ticket/4904

Reviewed-By: Jan Cholasta <jcholast@redhat.com>
Reviewed-By: David Kupka <dkupka@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/ipaplatform/base/tasks.py b/ipaplatform/base/tasks.py
index ff71c2bd1..10c5e835d 100644
--- a/ipaplatform/base/tasks.py
+++ b/ipaplatform/base/tasks.py
@@ -24,6 +24,9 @@ This module contains default platform-specific implementations of system tasks.
 
 import pwd
 import grp
+
+from pkg_resources import parse_version
+
 from ipaplatform.paths import paths
 from ipapython.ipa_log_manager import log_mgr
 from ipapython import ipautil
@@ -208,5 +211,12 @@ class BaseTaskNamespace(object):
         else:
             log.debug('user %s exists', name)
 
+    def parse_ipa_version(self, version):
+        """
+        :param version: textual version
+        :return: object implementing proper __cmp__ method for version compare
+        """
+        return parse_version(version)
+
 
 task_namespace = BaseTaskNamespace()