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Diffstat (limited to '')
| -rw-r--r-- | qa/tasks/mgr/test_failover.py | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/qa/tasks/mgr/test_failover.py b/qa/tasks/mgr/test_failover.py new file mode 100644 index 000000000..bfff11262 --- /dev/null +++ b/qa/tasks/mgr/test_failover.py @@ -0,0 +1,182 @@ + +import logging +import json + +from .mgr_test_case import MgrTestCase + + +log = logging.getLogger(__name__) + + +class TestFailover(MgrTestCase): + MGRS_REQUIRED = 2 + + def setUp(self): + super(TestFailover, self).setUp() + self.setup_mgrs() + + def test_timeout(self): + """ + That when an active mgr stops responding, a standby is promoted + after mon_mgr_beacon_grace. + """ + + # Query which mgr is active + original_active = self.mgr_cluster.get_active_id() + original_standbys = self.mgr_cluster.get_standby_ids() + + # Stop that daemon + self.mgr_cluster.mgr_stop(original_active) + + # Assert that the other mgr becomes active + self.wait_until_true( + lambda: self.mgr_cluster.get_active_id() in original_standbys, + timeout=60 + ) + + self.mgr_cluster.mgr_restart(original_active) + self.wait_until_true( + lambda: original_active in self.mgr_cluster.get_standby_ids(), + timeout=10 + ) + + def test_timeout_nostandby(self): + """ + That when an active mgr stop responding, and no standby is + available, the active mgr is removed from the map anyway. + """ + # Query which mgr is active + original_active = self.mgr_cluster.get_active_id() + original_standbys = self.mgr_cluster.get_standby_ids() + + for s in original_standbys: + self.mgr_cluster.mgr_stop(s) + self.mgr_cluster.mgr_fail(s) + + self.assertListEqual(self.mgr_cluster.get_standby_ids(), []) + self.assertEqual(self.mgr_cluster.get_active_id(), original_active) + + grace = int(self.mgr_cluster.get_config("mon_mgr_beacon_grace")) + log.info("Should time out in about {0} seconds".format(grace)) + + self.mgr_cluster.mgr_stop(original_active) + + # Now wait for the mon to notice the mgr is gone and remove it + # from the map. + self.wait_until_equal( + lambda: self.mgr_cluster.get_active_id(), + "", + timeout=grace * 2 + ) + + self.assertListEqual(self.mgr_cluster.get_standby_ids(), []) + self.assertEqual(self.mgr_cluster.get_active_id(), "") + + def test_explicit_fail(self): + """ + That when a user explicitly fails a daemon, a standby immediately + replaces it. + :return: + """ + # Query which mgr is active + original_active = self.mgr_cluster.get_active_id() + original_standbys = self.mgr_cluster.get_standby_ids() + + self.mgr_cluster.mgr_fail(original_active) + + # A standby should take over + self.wait_until_true( + lambda: self.mgr_cluster.get_active_id() in original_standbys, + timeout=60 + ) + + # The one we failed should come back as a standby (he isn't + # really dead) + self.wait_until_true( + lambda: original_active in self.mgr_cluster.get_standby_ids(), + timeout=10 + ) + + # Both daemons should have fully populated metadata + # (regression test for http://tracker.ceph.com/issues/21260) + meta = json.loads(self.mgr_cluster.mon_manager.raw_cluster_cmd( + "mgr", "metadata")) + id_to_meta = dict([(i['name'], i) for i in meta]) + for i in [original_active] + original_standbys: + self.assertIn(i, id_to_meta) + self.assertIn('ceph_version', id_to_meta[i]) + + # We should be able to fail back over again: the exercises + # our re-initialization of the python runtime within + # a single process lifetime. + + # Get rid of any bystander standbys so that the original_active + # will be selected as next active. + new_active = self.mgr_cluster.get_active_id() + for daemon in original_standbys: + if daemon != new_active: + self.mgr_cluster.mgr_stop(daemon) + self.mgr_cluster.mgr_fail(daemon) + + self.assertListEqual(self.mgr_cluster.get_standby_ids(), + [original_active]) + + self.mgr_cluster.mgr_stop(new_active) + self.mgr_cluster.mgr_fail(new_active) + + self.assertEqual(self.mgr_cluster.get_active_id(), original_active) + self.assertEqual(self.mgr_cluster.get_standby_ids(), []) + + def test_standby_timeout(self): + """ + That when a standby daemon stops sending beacons, it is + removed from the list of standbys + :return: + """ + original_active = self.mgr_cluster.get_active_id() + original_standbys = self.mgr_cluster.get_standby_ids() + + victim = original_standbys[0] + self.mgr_cluster.mgr_stop(victim) + + expect_standbys = set(original_standbys) - {victim} + + self.wait_until_true( + lambda: set(self.mgr_cluster.get_standby_ids()) == expect_standbys, + timeout=60 + ) + self.assertEqual(self.mgr_cluster.get_active_id(), original_active) + +class TestLibCephSQLiteFailover(MgrTestCase): + MGRS_REQUIRED = 1 + + def setUp(self): + super(TestLibCephSQLiteFailover, self).setUp() + self.setup_mgrs() + + def get_libcephsqlite(self): + mgr_map = self.mgr_cluster.get_mgr_map() + addresses = self.mgr_cluster.get_registered_clients('libcephsqlite', mgr_map=mgr_map) + self.assertEqual(len(addresses), 1) + return addresses[0] + + def test_maybe_reonnect(self): + """ + That the devicehealth module can recover after losing its libcephsqlite lock. + """ + + # make sure the database is populated and loaded by the module + self.mgr_cluster.mon_manager.ceph("device scrape-health-metrics") + + oldaddr = self.get_libcephsqlite() + self.mgr_cluster.mon_manager.ceph(f"osd blocklist add {oldaddr['addr']}/{oldaddr['nonce']}") + + def test(): + self.mgr_cluster.mon_manager.ceph("device scrape-health-metrics") + newaddr = self.get_libcephsqlite() + return oldaddr != newaddr + + self.wait_until_true( + test, + timeout=30 + ) |