def test_mongos_configure(self):
server = MongosServer()
server.my_hostname = 'node1.test.com'
server.configure(self.env)
self.assertTrue(
os.path.exists(server.mongodb_config_file),
"The config file for mongos instances does not exists")
def test_get_cluster_status_with_several_hosts(self):
self.several_hosts_setup_with_config_server()
server = MongosServer()
server.my_hostname = 'node1.test.com'
clusterStatus = server.getClusterStatus(server.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_for_several_hosts_stopped,
"The cluster status result before stating the mongos is not right")
def test_stopping_an_already_stopped_cluster(self):
self.one_host_setup()
server = MongosServer()
server.my_hostname = 'node1.test.com'
clusterStatus = server.getClusterStatus(server.getClusterData())
self.assertEqual(clusterStatus,self.expected_cluster_status_for_one_host_stopped,
"The cluster status result before stating the mongos is not right")
server.stop(self.env)
clusterStatus = server.getClusterStatus(server.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_for_one_host_stopped,
"The cluster status result after stopping the mongos is not right")
def test_must_not_start_if_all_config_servers_are_off(self):
self.several_hosts_setup()
server1 = MongosServer()
server1.my_hostname = 'node1.test.com'
clusterStatus = server1.getClusterStatus(server1.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_for_several_hosts_stopped,
"The cluster status result before stating the mongos is not right")
server1.start(self.env)
clusterStatus = server1.getClusterStatus(server1.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_for_several_hosts_stopped,
"The cluster status result before stating the mongos is not right")
def cluster_setup(self):
Script.config['clusterHostInfo'] = {
'mongos_hosts': ['node1.test.com'],
'mongodb_hosts': ['node1.test.com','node2.test.com','node3.test.com'],
'mongodc_hosts': ['node1.test.com']
}
params.mongod_cluster_definition = 'node1.test.com,node2.test.com/arbiter,node3.test.com,node2.test.com;' \
'node2.test.com,node2.test.com,node3.test.com/arbiter'
# Starting the required config server
self.config_server = MongoConfigServer()
self.config_server.my_hostname = 'node1.test.com'
self.config_server.start(self.env)
sleep(self.SLEEP_INTERVAL_AFTER_START_A_INSTANCE)
# Starting the mongos server
self.mongos_server = MongosServer()
self.mongos_server.my_hostname = 'node1.test.com'
self.mongos_server.start(self.env)
def test_get_cluster_data_with_one_host(self):
self.one_host_setup()
server = MongosServer()
server.my_hostname = 'node1.test.com'
expectedClusterData = [('0', ['node1.test.com', 'node1.test.com'],
[InstanceConfig(shard_name='0',
pid_file_name='/var/run/mongodb/node1_0_0.pid',
final_db_path='/var/lib/mongodb/node1_0_0',
log_file='/var/log/mongodb/node1_0_0.log',
db_port='27017',
host_name='node1.test.com',
is_arbiter=False),
InstanceConfig(shard_name='0',
pid_file_name='/var/run/mongodb/node1_0_1.pid',
final_db_path='/var/lib/mongodb/node1_0_1',
log_file='/var/log/mongodb/node1_0_1.log',
db_port='27018',
host_name='node1.test.com',
is_arbiter=False)])]
clusterData = server.getClusterData()
self.assertEqual(clusterData,expectedClusterData,"The cluster data for the mongos is not right")
def setUp(self):
self.as_super = super(IntegratedMongoConfTestCase, self)
self.as_super.setUp()
self.config_server = None
params.try_interval = 4
params.times_to_try = 10
# Configuring and Installing mongo config dependencies
server = MongoConfigServer()
server.my_hostname = 'node1.test.com'
server.configure(self.env)
server.install(self.env)
# Configuring and Installing mongos dependencies
server = MongosServer()
server.my_hostname = 'node1.test.com'
server.configure(self.env)
server.install(self.env)
def test_must_not_start_if_no_config_servers_primary_on(self):
self.several_hosts_setup()
server1 = MongosServer()
server1.my_hostname = 'node1.test.com'
clusterStatus = server1.getClusterStatus(server1.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_for_several_hosts_stopped,
"The cluster status result before stating the mongos is not right")
# Starting only the secondary config servers
config_server2 = MongoConfigServer()
config_server2.my_hostname = 'node2.test.com'
config_server2.start(self.env)
config_server3 = MongoConfigServer()
config_server3.my_hostname = 'node3.test.com'
config_server3.start(self.env)
server1.start(self.env)
clusterStatus = server1.getClusterStatus(server1.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_for_several_hosts_stopped,
"The cluster status result before stating the mongos is not right")
def test_mongos_install(self):
server = MongosServer()
server.my_hostname = 'node1.test.com'
server.install(self.env)
def test_mongos_with_several_hosts(self):
self.several_hosts_setup_with_config_server()
server2 = MongosServer()
server2.my_hostname = 'node2.test.com'
server1 = MongosServer()
server1.my_hostname = 'node1.test.com'
clusterStatus = server2.getClusterStatus(server2.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_for_several_hosts_stopped,
"The cluster status result before stating the mongos is not right")
server2.start(self.env)
sleep(self.SLEEP_INTERVAL_AFTER_START_A_INSTANCE)
server2.status(self.env)
expectedClusterStatusServer2On = [
('0',['node1.test.com','node2.test.com'], [
InstanceStatus(shard_name='0',
pid_file_name='/var/run/mongodb/node1_0_0.pid',
final_db_path='/var/lib/mongodb/node1_0_0',
log_file='/var/log/mongodb/node1_0_0.log',
db_port='27017',
host_name='node1.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='0',
pid_file_name='/var/run/mongodb/node2_0_0.pid',
final_db_path='/var/lib/mongodb/node2_0_0',
log_file='/var/log/mongodb/node2_0_0.log',
db_port='27017',
host_name='node2.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=False,
repl_role=None)])]
clusterStatus = server2.getClusterStatus(server2.getClusterData())
self.assertEqual(clusterStatus, expectedClusterStatusServer2On, "The cluster status result for a started node2"
" in the mongos is not right")
server1.start(self.env)
sleep(self.SLEEP_INTERVAL_AFTER_START_A_INSTANCE)
server1.status(self.env)
expectedClusterStatusServer1On = [
('0',['node1.test.com','node2.test.com'], [
InstanceStatus(shard_name='0',
pid_file_name='/var/run/mongodb/node1_0_0.pid',
final_db_path='/var/lib/mongodb/node1_0_0',
log_file='/var/log/mongodb/node1_0_0.log',
db_port='27017',
host_name='node1.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=False,
repl_role=None),
InstanceStatus(shard_name='0',
pid_file_name='/var/run/mongodb/node2_0_0.pid',
final_db_path='/var/lib/mongodb/node2_0_0',
log_file='/var/log/mongodb/node2_0_0.log',
db_port='27017',
host_name='node2.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=False,
repl_role=None)])]
clusterStatus = server1.getClusterStatus(server1.getClusterData())
self.assertEqual(clusterStatus, expectedClusterStatusServer1On, "The cluster status result for a started node1"
" in the mongos is not right")
server2.stop(self.env)
with self.assertRaises(ComponentIsNotRunning):
server2.status(self.env)
server1.stop(self.env)
with self.assertRaises(ComponentIsNotRunning):
server1.status(self.env)
clusterStatus = server2.getClusterStatus(server2.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_for_several_hosts_stopped,
"The cluster status result after stopping the mongos is not right")
class IntegratedShardedClusterTestCase(IntegratedBaseTestCase):
def setUp(self):
self.as_super = super(IntegratedShardedClusterTestCase, self)
self.as_super.setUp()
self.config_server = None
self.mongos_server = None
params.try_interval = 4
params.times_to_try = 10
# Configuring and Installing mongo config dependencies
server = MongoDBServer()
server.my_hostname = 'node1.test.com'
server.configure(self.env)
server.install(self.env)
# Configuring and Installing mongo config dependencies
server = MongoConfigServer()
server.my_hostname = 'node1.test.com'
server.configure(self.env)
server.install(self.env)
# Configuring and Installing mongos dependencies
server = MongosServer()
server.my_hostname = 'node1.test.com'
server.configure(self.env)
server.install(self.env)
def tearDown(self):
self.as_super = super(IntegratedShardedClusterTestCase, self)
self.as_super.tearDown()
if self.config_server:
self.config_server.stop(self.env)
if self.mongos_server:
self.mongos_server.stop(self.env)
def cluster_setup(self):
Script.config['clusterHostInfo'] = {
'mongos_hosts': ['node1.test.com'],
'mongodb_hosts': ['node1.test.com','node2.test.com','node3.test.com'],
'mongodc_hosts': ['node1.test.com']
}
params.mongod_cluster_definition = 'node1.test.com,node2.test.com/arbiter,node3.test.com,node2.test.com;' \
'node2.test.com,node2.test.com,node3.test.com/arbiter'
# Starting the required config server
self.config_server = MongoConfigServer()
self.config_server.my_hostname = 'node1.test.com'
self.config_server.start(self.env)
sleep(self.SLEEP_INTERVAL_AFTER_START_A_INSTANCE)
# Starting the mongos server
self.mongos_server = MongosServer()
self.mongos_server.my_hostname = 'node1.test.com'
self.mongos_server.start(self.env)
expected_cluster_status_stopped = [
('shard0',['node1.test.com','node2.test.com/arbiter','node3.test.com','node2.test.com'], [
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node1_shard0_0.pid',
final_db_path='/var/lib/mongodb/node1_shard0_0',
log_file='/var/log/mongodb/node1_shard0_0.log',
db_port='27025',
host_name='node1.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node2_shard0_0.pid',
final_db_path='/var/lib/mongodb/node2_shard0_0',
log_file='/var/log/mongodb/node2_shard0_0.log',
db_port='27025',
host_name='node2.test.com',
is_arbiter=True,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node3_shard0_0.pid',
final_db_path='/var/lib/mongodb/node3_shard0_0',
log_file='/var/log/mongodb/node3_shard0_0.log',
db_port='27025',
host_name='node3.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node2_shard0_1.pid',
final_db_path='/var/lib/mongodb/node2_shard0_1',
log_file='/var/log/mongodb/node2_shard0_1.log',
db_port='27030',
host_name='node2.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None)]),
('shard1', ['node2.test.com', 'node2.test.com', 'node3.test.com/arbiter'], [
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node2_shard1_2.pid',
final_db_path='/var/lib/mongodb/node2_shard1_2',
log_file='/var/log/mongodb/node2_shard1_2.log',
db_port='27031',
host_name='node2.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node2_shard1_3.pid',
final_db_path='/var/lib/mongodb/node2_shard1_3',
log_file='/var/log/mongodb/node2_shard1_3.log',
db_port='27032',
host_name='node2.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node3_shard1_1.pid',
final_db_path='/var/lib/mongodb/node3_shard1_1',
log_file='/var/log/mongodb/node3_shard1_1.log',
db_port='27030',
host_name='node3.test.com',
is_arbiter=True,
is_started=False,
is_repl_configurated=None,
repl_role=None)])
]
def test_sharded_cluster(self):
self.cluster_setup()
server3 = MongoDBServer()
server3.my_hostname = 'node3.test.com'
server2 = MongoDBServer()
server2.my_hostname = 'node2.test.com'
server1 = MongoDBServer()
server1.my_hostname = 'node1.test.com'
clusterStatus = server3.getClusterStatus(server3.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_stopped,
"The cluster status result before stating the replicaset is not right")
mongos_status, shard_list = server3.getMongosStatus('node1.test.com:27017')
self.assertTrue(mongos_status,"Mongos MUST be running to execute this test!")
self.assertEqual(len(shard_list),0,'The mongos must not know any shard at this first point!')
server3.start(self.env)
sleep(self.SLEEP_INTERVAL_AFTER_START_A_INSTANCE)
server3.status(self.env)
mongos_status, shard_list = server3.getMongosStatus('node1.test.com:27017')
self.assertTrue(mongos_status,"Mongos MUST be running to execute this test!")
self.assertEqual(len(shard_list),0,'The mongos must not know any shard at this second point!')
expectedClusterStatusServer3On = [
('shard0',['node1.test.com','node2.test.com/arbiter','node3.test.com','node2.test.com'], [
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node1_shard0_0.pid',
final_db_path='/var/lib/mongodb/node1_shard0_0',
log_file='/var/log/mongodb/node1_shard0_0.log',
db_port='27025',
host_name='node1.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node2_shard0_0.pid',
final_db_path='/var/lib/mongodb/node2_shard0_0',
log_file='/var/log/mongodb/node2_shard0_0.log',
db_port='27025',
host_name='node2.test.com',
is_arbiter=True,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node3_shard0_0.pid',
final_db_path='/var/lib/mongodb/node3_shard0_0',
log_file='/var/log/mongodb/node3_shard0_0.log',
db_port='27025',
host_name='node3.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=False,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node2_shard0_1.pid',
final_db_path='/var/lib/mongodb/node2_shard0_1',
log_file='/var/log/mongodb/node2_shard0_1.log',
db_port='27030',
host_name='node2.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None)]),
('shard1', ['node2.test.com', 'node2.test.com', 'node3.test.com/arbiter'], [
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node2_shard1_2.pid',
final_db_path='/var/lib/mongodb/node2_shard1_2',
log_file='/var/log/mongodb/node2_shard1_2.log',
db_port='27031',
host_name='node2.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node2_shard1_3.pid',
final_db_path='/var/lib/mongodb/node2_shard1_3',
log_file='/var/log/mongodb/node2_shard1_3.log',
db_port='27032',
host_name='node2.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node3_shard1_1.pid',
final_db_path='/var/lib/mongodb/node3_shard1_1',
log_file='/var/log/mongodb/node3_shard1_1.log',
db_port='27030',
host_name='node3.test.com',
is_arbiter=True,
is_started=True,
is_repl_configurated=False,
repl_role=None)])
]
clusterStatus = server3.getClusterStatus(server3.getClusterData())
self.assertEqual(clusterStatus, expectedClusterStatusServer3On, "The cluster status result for a started node3 "
"in the replicaset is not right")
server2.start(self.env)
sleep(self.SLEEP_INTERVAL_AFTER_START_A_INSTANCE)
server2.status(self.env)
mongos_status, shard_list = server3.getMongosStatus('node1.test.com:27017')
self.assertTrue(mongos_status,"Mongos MUST be running to execute this test!")
self.assertEqual(len(shard_list),1,'The mongos must know one shard at this point!')
expectedClusterStatusServer2On = [
('shard0',['node1.test.com','node2.test.com/arbiter','node3.test.com','node2.test.com'], [
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node1_shard0_0.pid',
final_db_path='/var/lib/mongodb/node1_shard0_0',
log_file='/var/log/mongodb/node1_shard0_0.log',
db_port='27025',
host_name='node1.test.com',
is_arbiter=False,
is_started=False,
is_repl_configurated=None,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node2_shard0_0.pid',
final_db_path='/var/lib/mongodb/node2_shard0_0',
log_file='/var/log/mongodb/node2_shard0_0.log',
db_port='27025',
host_name='node2.test.com',
is_arbiter=True,
is_started=True,
is_repl_configurated=False,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node3_shard0_0.pid',
final_db_path='/var/lib/mongodb/node3_shard0_0',
log_file='/var/log/mongodb/node3_shard0_0.log',
db_port='27025',
host_name='node3.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=False,
repl_role=None),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node2_shard0_1.pid',
final_db_path='/var/lib/mongodb/node2_shard0_1',
log_file='/var/log/mongodb/node2_shard0_1.log',
db_port='27030',
host_name='node2.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=False,
repl_role=None)]),
('shard1', ['node2.test.com', 'node2.test.com', 'node3.test.com/arbiter'], [
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node2_shard1_2.pid',
final_db_path='/var/lib/mongodb/node2_shard1_2',
log_file='/var/log/mongodb/node2_shard1_2.log',
db_port='27031',
host_name='node2.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=True,
repl_role="PRIMARY"),
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node2_shard1_3.pid',
final_db_path='/var/lib/mongodb/node2_shard1_3',
log_file='/var/log/mongodb/node2_shard1_3.log',
db_port='27032',
host_name='node2.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=True,
repl_role="SECONDARY"),
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node3_shard1_1.pid',
final_db_path='/var/lib/mongodb/node3_shard1_1',
log_file='/var/log/mongodb/node3_shard1_1.log',
db_port='27030',
host_name='node3.test.com',
is_arbiter=True,
is_started=True,
is_repl_configurated=True,
repl_role="SECONDARY")])
]
clusterStatus = server2.getClusterStatus(server2.getClusterData())
self.assertEqual(clusterStatus, expectedClusterStatusServer2On, "The cluster status result for a started node2"
" in the replicaset is not right")
server1.start(self.env)
sleep(self.SLEEP_INTERVAL_AFTER_START_A_INSTANCE)
server1.status(self.env)
mongos_status, shard_list = server3.getMongosStatus('node1.test.com:27017')
self.assertTrue(mongos_status,"Mongos MUST be running to execute this test!")
self.assertEqual(len(shard_list),2,'The mongos must know two shards at this point!')
expectedClusterStatusServer1On = [
('shard0',['node1.test.com','node2.test.com/arbiter','node3.test.com','node2.test.com'], [
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node1_shard0_0.pid',
final_db_path='/var/lib/mongodb/node1_shard0_0',
log_file='/var/log/mongodb/node1_shard0_0.log',
db_port='27025',
host_name='node1.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=True,
repl_role="PRIMARY"),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node2_shard0_0.pid',
final_db_path='/var/lib/mongodb/node2_shard0_0',
log_file='/var/log/mongodb/node2_shard0_0.log',
db_port='27025',
host_name='node2.test.com',
is_arbiter=True,
is_started=True,
is_repl_configurated=True,
repl_role="SECONDARY"),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node3_shard0_0.pid',
final_db_path='/var/lib/mongodb/node3_shard0_0',
log_file='/var/log/mongodb/node3_shard0_0.log',
db_port='27025',
host_name='node3.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=True,
repl_role="SECONDARY"),
InstanceStatus(shard_name='shard0',
pid_file_name='/var/run/mongodb/node2_shard0_1.pid',
final_db_path='/var/lib/mongodb/node2_shard0_1',
log_file='/var/log/mongodb/node2_shard0_1.log',
db_port='27030',
host_name='node2.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=True,
repl_role="SECONDARY")]),
('shard1', ['node2.test.com', 'node2.test.com', 'node3.test.com/arbiter'], [
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node2_shard1_2.pid',
final_db_path='/var/lib/mongodb/node2_shard1_2',
log_file='/var/log/mongodb/node2_shard1_2.log',
db_port='27031',
host_name='node2.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=True,
repl_role="PRIMARY"),
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node2_shard1_3.pid',
final_db_path='/var/lib/mongodb/node2_shard1_3',
log_file='/var/log/mongodb/node2_shard1_3.log',
db_port='27032',
host_name='node2.test.com',
is_arbiter=False,
is_started=True,
is_repl_configurated=True,
repl_role="SECONDARY"),
InstanceStatus(shard_name='shard1',
pid_file_name='/var/run/mongodb/node3_shard1_1.pid',
final_db_path='/var/lib/mongodb/node3_shard1_1',
log_file='/var/log/mongodb/node3_shard1_1.log',
db_port='27030',
host_name='node3.test.com',
is_arbiter=True,
is_started=True,
is_repl_configurated=True,
repl_role="SECONDARY")])
]
clusterStatus = server2.getClusterStatus(server2.getClusterData())
self.assertEqual(clusterStatus, expectedClusterStatusServer1On, "The cluster status result for a started node1"
" in the replicaset is not right")
server2.stop(self.env)
with self.assertRaises(ComponentIsNotRunning):
server2.status(self.env)
server1.stop(self.env)
with self.assertRaises(ComponentIsNotRunning):
server1.status(self.env)
server3.stop(self.env)
with self.assertRaises(ComponentIsNotRunning):
server3.status(self.env)
clusterStatus = server3.getClusterStatus(server3.getClusterData())
self.assertEqual(clusterStatus, self.expected_cluster_status_stopped,
"The cluster status result after stopping the replicaset is not right")