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New test Split Brain

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Signed-off-by: Dmitriy Zayakin <d.zayakin@yadro.com>
This commit is contained in:
Dmitriy Zayakin 2023-08-16 11:53:14 +03:00
parent 4a17bc7b9c
commit e70532d6e0
2 changed files with 321 additions and 26 deletions
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13
pytest_tests/helpers/iptables_helper.py
View file

@ -1,13 +0,0 @@
from frostfs_testlib.shell import Shell
class IpTablesHelper:
@staticmethod
def drop_input_traffic_to_port(shell: Shell, ports: list[str]) -> None:
for port in ports:
shell.exec(f"sudo iptables -A INPUT -p tcp --dport {port} -j DROP")
@staticmethod
def restore_input_traffic_to_port(shell: Shell, ports: list[str]) -> None:
for port in ports:
shell.exec(f"sudo iptables -D INPUT -p tcp --dport {port} -j DROP")

334
pytest_tests/testsuites/failovers/test_failover_network.py
View file

@ -1,28 +1,45 @@
import logging
import os
import random
import re
import time
from time import sleep
from typing import List, Tuple
import allure
import pytest
from frostfs_testlib.resources.common import MORPH_BLOCK_TIME
from frostfs_testlib.resources.wellknown_acl import PUBLIC_ACL
from frostfs_testlib.steps.cli.container import create_container
from frostfs_testlib.steps.cli.object import get_object, put_object_to_random_node
from frostfs_testlib.storage.cluster import StorageNode
from frostfs_testlib.s3 import AwsCliClient
from frostfs_testlib.s3.interfaces import S3ClientWrapper, VersioningStatus
from frostfs_testlib.steps.cli.container import (
create_container,
list_objects,
search_nodes_with_container,
)
from frostfs_testlib.steps.cli.object import get_object, get_object_nodes, put_object_to_random_node
from frostfs_testlib.steps.s3.s3_helper import set_bucket_versioning
from frostfs_testlib.storage.cluster import ClusterNode
from frostfs_testlib.storage.controllers import ClusterStateController
from frostfs_testlib.storage.dataclasses.object_size import ObjectSize
from frostfs_testlib.testing.cluster_test_base import ClusterTestBase
from frostfs_testlib.utils import datetime_utils
from frostfs_testlib.utils.failover_utils import (
wait_all_storage_nodes_returned,
wait_object_replication,
)
from frostfs_testlib.utils.file_utils import generate_file, get_file_hash
from pytest_tests.helpers.iptables_helper import IpTablesHelper
logger = logging.getLogger("NeoLogger")
STORAGE_NODE_COMMUNICATION_PORT = "8080"
STORAGE_NODE_COMMUNICATION_PORT_TLS = "8082"
PORTS_TO_BLOCK = [STORAGE_NODE_COMMUNICATION_PORT, STORAGE_NODE_COMMUNICATION_PORT_TLS]
blocked_nodes: list[StorageNode] = []
blocked_nodes: list[ClusterNode] = []
def pytest_generate_tests(metafunc):
if "s3_client" in metafunc.fixturenames:
metafunc.parametrize("s3_client", [AwsCliClient], ids=["aws"], indirect=True)
@pytest.mark.failover
@ -30,13 +47,13 @@ blocked_nodes: list[StorageNode] = []
class TestFailoverNetwork(ClusterTestBase):
@pytest.fixture(autouse=True)
@allure.title("Restore network")
def restore_network(self):
def restore_network(self, cluster_state_controller: ClusterStateController):
yield
with allure.step(f"Count blocked nodes {len(blocked_nodes)}"):
not_empty = len(blocked_nodes) != 0
for node in list(blocked_nodes):
with allure.step(f"Restore network at host for {node.label}"):
IpTablesHelper.restore_input_traffic_to_port(node.host.get_shell(), PORTS_TO_BLOCK)
cluster_state_controller.restore_traffic(mode="ports", node=node)
blocked_nodes.remove(node)
if not_empty:
wait_all_storage_nodes_returned(self.shell, self.cluster)
@ -47,6 +64,7 @@ class TestFailoverNetwork(ClusterTestBase):
default_wallet: str,
require_multiple_hosts,
simple_object_size: ObjectSize,
cluster_state_controller: ClusterStateController,
):
"""
Block storage nodes traffic using iptables and wait for replication for objects.
@ -81,10 +99,19 @@ class TestFailoverNetwork(ClusterTestBase):
excluded_nodes = []
for node in nodes_to_block:
with allure.step(f"Block incoming traffic at node {node} on port {PORTS_TO_BLOCK}"):
blocked_nodes.append(node)
block_node = [
cluster_node
for cluster_node in self.cluster.cluster_nodes
if cluster_node.storage_node == node
]
blocked_nodes.append(*block_node)
excluded_nodes.append(node)
IpTablesHelper.drop_input_traffic_to_port(node.host.get_shell(), PORTS_TO_BLOCK)
sleep(wakeup_node_timeout)
cluster_state_controller.drop_traffic(
mode="ports",
node=node,
wakeup_timeout=wakeup_node_timeout,
ports=PORTS_TO_BLOCK,
)
with allure.step(f"Check object is not stored on node {node}"):
new_nodes = wait_object_replication(
@ -104,8 +131,13 @@ class TestFailoverNetwork(ClusterTestBase):
for node in nodes_to_block:
with allure.step(f"Unblock incoming traffic at host {node} on port {PORTS_TO_BLOCK}"):
IpTablesHelper.restore_input_traffic_to_port(node.host.get_shell(), PORTS_TO_BLOCK)
blocked_nodes.remove(node)
cluster_state_controller.restore_traffic(mode="ports", node=node)
block_node = [
cluster_node
for cluster_node in self.cluster.cluster_nodes
if cluster_node.storage_node == node
]
blocked_nodes.remove(*block_node)
sleep(wakeup_node_timeout)
with allure.step("Check object data is not corrupted"):
@ -117,3 +149,279 @@ class TestFailoverNetwork(ClusterTestBase):
wallet, cid, oid, shell=self.shell, endpoint=new_nodes[0].get_rpc_endpoint()
)
assert get_file_hash(source_file_path) == get_file_hash(got_file_path)
@pytest.mark.failover
@pytest.mark.failover_split_brain
class TestFailoverSplitBrain(ClusterTestBase):
@pytest.fixture(autouse=True)
def restore_traffic_system(self, cluster_state_controller: ClusterStateController) -> None:
yield
cluster_state_controller.restore_all_traffic()
def search_container_bucket(self, bucket):
output = self.shell.exec(
f"curl -k --head https://{self.cluster.default_rpc_endpoint.split(':')[0]}/{bucket}"
).stdout.strip()
pattern = r"x-container-id: (.*)"
matches = re.findall(pattern, output)
if matches:
return matches[0]
else:
return logger.info(f"Key {pattern} no search")
def split_nodes(self, nodes_list: list[ClusterNode]) -> tuple[list[ClusterNode], ...]:
count = len(nodes_list)
splitted = []
free_nodes = list(set(self.cluster.cluster_nodes) - set(nodes_list))
for i in range(count):
splitted.append(nodes_list[i::count] + free_nodes[i::count])
return tuple(s for s in splitted)
@allure.title("Replication tree after split brain, versioning bucket")
def test_versioning_bucket_after_split_brain(
self,
cluster_state_controller: ClusterStateController,
bucket: str,
s3_client: S3ClientWrapper,
default_wallet,
simple_object_size: ObjectSize,
):
object_version = []
with allure.step(f"Search ID container for bucket - {bucket}"):
bucket_cid = self.search_container_bucket(bucket)
with allure.step(f"Check, container - {bucket_cid}, which is located on 4 nodes"):
container_nodes = search_nodes_with_container(
wallet=default_wallet,
cid=bucket_cid,
shell=self.shell,
endpoint=self.cluster.default_rpc_endpoint,
cluster=self.cluster,
)
assert len(container_nodes) == 4, f"Expected 4 nodes, actually - {len(container_nodes)}"
with allure.step(f"Enable versioning in a bucket - {bucket}"):
set_bucket_versioning(
s3_client=s3_client, bucket=bucket, status=VersioningStatus.ENABLED
)
with allure.step("Check that versioning is enabled in the bucket"):
assert s3_client.get_bucket_versioning_status(bucket) == "Enabled"
with allure.step(f"Put an object in a bucket - {bucket}"):
file_one = generate_file(simple_object_size.value)
object_version.append(
s3_client.put_object(
bucket=bucket,
filepath=file_one,
)
)
os.remove(file_one)
with allure.step("Check that the object is placed in the bucket and it is alone there"):
list_objects_versions = s3_client.list_objects_versions(bucket=bucket)
assert (
len(list_objects_versions) == 1
), f"Expected 1, actual {len(list_objects_versions)}"
with allure.step("Find the ID of the placed object"):
oid = list_objects(
wallet=default_wallet,
shell=self.shell,
container_id=bucket_cid,
endpoint=self.cluster.default_rpc_endpoint,
)
with allure.step(f"Find the nodes on which the object lies - {oid}"):
objects_nodes = get_object_nodes(
cluster=self.cluster,
wallet=default_wallet,
cid=bucket_cid,
oid=oid[0],
shell=self.shell,
endpoint=self.cluster.default_rpc_endpoint,
)
with allure.step("Split cluster"):
segment_one, segment_two = self.split_nodes(objects_nodes)
with allure.step(f"Enable splitting on nodes - {segment_one}"):
for node in segment_one:
cluster_state_controller.drop_traffic(
mode="nodes", node=node, wakeup_timeout=60, block_nodes=segment_two
)
with allure.step(f"Checking ping from {node} to {segment_two}, expected False"):
assert (
cluster_state_controller.ping_traffic(node, segment_two, 1) is True
), "Expected True"
for node in segment_two:
with allure.step(f"Checking ping from {node} to {segment_two}, expected False"):
assert (
cluster_state_controller.ping_traffic(node, segment_one, 1) is True
), "Expected True"
with allure.step("Put the 2nd version of the same object on both halves of the cluster"):
for node in objects_nodes:
file = generate_file(simple_object_size.value)
with allure.step(f"Change s3 endpoint to - {node.s3_gate.get_endpoint()}"):
s3_client.set_endpoint(node.s3_gate.get_endpoint())
with allure.step(f"Put object in bucket - {bucket}"):
object_version.append(
s3_client.put_object(
bucket=bucket,
filepath=file,
)
)
os.remove(file)
time.sleep(datetime_utils.parse_time(MORPH_BLOCK_TIME))
with allure.step(
f"Change s3 endpoint to default - {self.cluster.default_s3_gate_endpoint}"
):
s3_client.set_endpoint(self.cluster.default_s3_gate_endpoint)
with allure.step("Turn off split"):
for node in segment_one:
with allure.step(f"Turn off to split - {node}"):
cluster_state_controller.restore_traffic(mode="nodes", node=node)
with allure.step(f"Checking ping from {node} to {segment_two}, expected True"):
assert cluster_state_controller.ping_traffic(
node, segment_two, 0
), "Expected True"
for node in segment_two:
with allure.step(f"Checking ping from {node} to {segment_one}, expected True"):
assert cluster_state_controller.ping_traffic(
node, segment_one, 0
), "Expected True"
with allure.step("Tick 1 epoch and wait 2 block"):
self.tick_epochs(1, self.cluster.storage_nodes[0])
time.sleep(datetime_utils.parse_time(MORPH_BLOCK_TIME) * 2)
with allure.step(
"Check that the nodes of both halves of the cluster contain all 3 downloaded versions"
):
bucket_versions = s3_client.list_objects_versions(bucket=bucket)
bucket_versions = sorted(bucket_versions, key=lambda x: x["LastModified"])
assert len(bucket_versions) == 3, f"Expected 3, actually {len(bucket_versions)}"
with allure.step("Check that the latest version is the one that was uploaded last in time"):
assert object_version[-1] == bucket_versions[-1]["VersionId"], (
f"{object_version[-1]} " f"!= {bucket_versions[-1]['VersionId']}"
)
@allure.title("Replication tree after split brain, no version bucket")
def test_no_version_bucket_after_split_brain(
self,
cluster_state_controller: ClusterStateController,
bucket: str,
s3_client: S3ClientWrapper,
default_wallet,
simple_object_size: ObjectSize,
):
with allure.step(f"Search ID container for bucket - {bucket}"):
bucket_cid = self.search_container_bucket(bucket)
with allure.step(f"Check, container - {bucket_cid}, which is located on 4 nodes"):
container_nodes = search_nodes_with_container(
wallet=default_wallet,
cid=bucket_cid,
shell=self.shell,
endpoint=self.cluster.default_rpc_endpoint,
cluster=self.cluster,
)
assert len(container_nodes) == 4, f"Expected 4 nodes, actually - {len(container_nodes)}"
with allure.step(f"Put an object in a bucket - {bucket}"):
file_one = generate_file(simple_object_size.value)
s3_client.put_object(
bucket=bucket,
filepath=file_one,
)
os.remove(file_one)
with allure.step("Check that the object is placed in the bucket and it is alone there"):
list_objects_versions = s3_client.list_objects_versions(bucket=bucket)
assert (
len(list_objects_versions) == 1
), f"Expected 1, actual {len(list_objects_versions)}"
with allure.step("Find the ID of the placed object"):
oid = list_objects(
wallet=default_wallet,
shell=self.shell,
container_id=bucket_cid,
endpoint=self.cluster.default_rpc_endpoint,
)
with allure.step(f"Find the nodes on which the object lies - {oid}"):
objects_nodes = get_object_nodes(
cluster=self.cluster,
wallet=default_wallet,
cid=bucket_cid,
oid=oid[0],
shell=self.shell,
endpoint=self.cluster.default_rpc_endpoint,
)
with allure.step("Split cluster"):
segment_one, segment_two = self.split_nodes(objects_nodes)
with allure.step(f"Enable splitting on nodes - {segment_one}"):
for node in segment_one:
cluster_state_controller.drop_traffic(
mode="nodes", node=node, wakeup_timeout=60, block_nodes=segment_two
)
with allure.step(f"Checking ping from {node} to {segment_two}, expected False"):
assert cluster_state_controller.ping_traffic(
node, segment_two, 1
), "Expected False"
for node in segment_two:
with allure.step(f"Checking ping from {node} to {segment_two}, expected False"):
assert cluster_state_controller.ping_traffic(
node, segment_one, 1
), "Expected False"
with allure.step("Put the 2nd version of the same object on both halves of the cluster"):
for node in objects_nodes:
file = generate_file(simple_object_size.value)
with allure.step(f"Change s3 endpoint to - {node.s3_gate.get_endpoint()}"):
s3_client.set_endpoint(node.s3_gate.get_endpoint())
with allure.step(f"Put object in bucket - {bucket}"):
s3_client.put_object(
bucket=bucket,
filepath=file,
)
os.remove(file)
time.sleep(datetime_utils.parse_time(MORPH_BLOCK_TIME))
with allure.step(
f"Change s3 endpoint to default - {self.cluster.default_s3_gate_endpoint}"
):
s3_client.set_endpoint(self.cluster.default_s3_gate_endpoint)
with allure.step("Turn off split"):
for node in segment_one:
with allure.step(f"Turn off to split - {node}"):
cluster_state_controller.restore_traffic(mode="nodes", node=node)
with allure.step(f"Checking ping from {node} to {segment_two}, expected True"):
assert cluster_state_controller.ping_traffic(
node, segment_two, 0
), "Expected True"
for node in segment_two:
with allure.step(f"Checking ping from {node} to {segment_one}, expected True"):
assert cluster_state_controller.ping_traffic(
node, segment_one, 0
), "Expected True"
with allure.step("Tick 1 epoch and wait 2 block"):
self.tick_epochs(1, self.cluster.storage_nodes[0])
time.sleep(datetime_utils.parse_time(MORPH_BLOCK_TIME) * 2)
with allure.step(
"Check that the nodes of both halves of the cluster contain all 3 downloaded versions"
):
objects_bucket = s3_client.list_objects_versions(bucket=bucket)
assert len(objects_bucket) == 3, f"Expected 3, actually {len(objects_bucket)}"