diff --git a/tests/integration/helpers/cluster.py b/tests/integration/helpers/cluster.py
index 7888e07587c..eb7ed55c7a2 100644
--- a/tests/integration/helpers/cluster.py
+++ b/tests/integration/helpers/cluster.py
@@ -29,7 +29,6 @@ from dict2xml import dict2xml
 from kazoo.client import KazooClient
 from kazoo.exceptions import KazooException
 from minio import Minio
-from minio.deleteobjects import DeleteObject
 from helpers.test_tools import assert_eq_with_retry
 
 import docker
@@ -172,6 +171,13 @@ def enable_consistent_hash_plugin(rabbitmq_id):
     p.communicate()
     return p.returncode == 0
 
+def get_instances_dir():
+    if 'INTEGRATION_TESTS_RUN_ID' in os.environ:
+        return '_instances_' + shlex.quote(os.environ['INTEGRATION_TESTS_RUN_ID'])
+    else:
+        return '_instances'
+
+
 class ClickHouseCluster:
     """ClickHouse cluster with several instances and (possibly) ZooKeeper.
 
@@ -1232,8 +1238,8 @@ class ClickHouseCluster:
                 for bucket in buckets:
                     if minio_client.bucket_exists(bucket):
                         delete_object_list = map(
-                            lambda x: DeleteObject(x.object_name),
-                            minio_client.list_objects(bucket, recursive=True),
+                            lambda x: x.object_name,
+                            minio_client.list_objects_v2(bucket, recursive=True),
                         )
                         errors = minio_client.remove_objects(bucket, delete_object_list)
                         for error in errors:
diff --git a/tests/integration/pytest.ini b/tests/integration/pytest.ini
index 737a37ee9d0..6d451adf7eb 100644
--- a/tests/integration/pytest.ini
+++ b/tests/integration/pytest.ini
@@ -1,6 +1,6 @@
 [pytest]
 python_files = test*.py
-norecursedirs = _instances
+norecursedirs = _instances*
 timeout = 1800
 junit_duration_report = call
 junit_suite_name = integration
diff --git a/tests/integration/test_merge_tree_s3/test.py b/tests/integration/test_merge_tree_s3/test.py
index 4b30287ca1e..31df6dff374 100644
--- a/tests/integration/test_merge_tree_s3/test.py
+++ b/tests/integration/test_merge_tree_s3/test.py
@@ -6,7 +6,7 @@ import threading
 import os
 
 import pytest
-from helpers.cluster import ClickHouseCluster
+from helpers.cluster import ClickHouseCluster, get_instances_dir
 
 
 # By default the exceptions that was throwed in threads will be ignored
@@ -30,7 +30,7 @@ class SafeThread(threading.Thread):
 
 
 SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
-CONFIG_PATH = os.path.join(SCRIPT_DIR, './_instances/node/configs/config.d/storage_conf.xml')
+CONFIG_PATH = os.path.join(SCRIPT_DIR, './{}/node/configs/config.d/storage_conf.xml'.format(get_instances_dir()))
 
 
 def replace_config(old, new):
diff --git a/tests/integration/test_reload_max_table_size_to_drop/test.py b/tests/integration/test_reload_max_table_size_to_drop/test.py
index 5f2083d742e..7e7219088b8 100644
--- a/tests/integration/test_reload_max_table_size_to_drop/test.py
+++ b/tests/integration/test_reload_max_table_size_to_drop/test.py
@@ -2,13 +2,14 @@ import os
 import time
 
 import pytest
-from helpers.cluster import ClickHouseCluster
+from helpers.cluster import ClickHouseCluster, get_instances_dir
 
 cluster = ClickHouseCluster(__file__)
 node = cluster.add_instance('node', main_configs=["configs/max_table_size_to_drop.xml"])
 
 SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
-CONFIG_PATH = os.path.join(SCRIPT_DIR, './_instances/node/configs/config.d/max_table_size_to_drop.xml')
+
+CONFIG_PATH = os.path.join(SCRIPT_DIR, './{}/node/configs/config.d/max_table_size_to_drop.xml'.format(get_instances_dir()))
 
 
 @pytest.fixture(scope="module")
diff --git a/tests/integration/test_storage_s3/test.py b/tests/integration/test_storage_s3/test.py
index 545ca4256f3..52b021a07c5 100644
--- a/tests/integration/test_storage_s3/test.py
+++ b/tests/integration/test_storage_s3/test.py
@@ -9,12 +9,13 @@ import time
 
 import helpers.client
 import pytest
-from helpers.cluster import ClickHouseCluster, ClickHouseInstance
+from helpers.cluster import ClickHouseCluster, ClickHouseInstance, get_instances_dir
 
 MINIO_INTERNAL_PORT = 9001
 
 SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
-CONFIG_PATH = os.path.join(SCRIPT_DIR, './_instances/dummy/configs/config.d/defaultS3.xml')
+
+CONFIG_PATH = os.path.join(SCRIPT_DIR, './{}/dummy/configs/config.d/defaultS3.xml'.format(get_instances_dir()))
 
 
 # Creates S3 bucket for tests and allows anonymous read-write access to it.
diff --git a/tests/integration/test_system_flush_logs/test.py b/tests/integration/test_system_flush_logs/test.py
index 6dc843e101a..a1a21f24099 100644
--- a/tests/integration/test_system_flush_logs/test.py
+++ b/tests/integration/test_system_flush_logs/test.py
@@ -20,9 +20,8 @@ system_logs = [
     ('system.metric_log', 1),
 ]
 
-# Default timeout for flush is 60
-# decrease timeout for the test to show possible issues.
-timeout = pytest.mark.timeout(30)
+# 60 -- Default timeout for flush
+timeout = pytest.mark.timeout(60)
 
 
 @pytest.fixture(scope='module', autouse=True)