mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-15 02:41:59 +00:00
312 lines
9.8 KiB
Python
312 lines
9.8 KiB
Python
import pytest
|
|
from helpers.client import QueryRuntimeException
|
|
from helpers.cluster import ClickHouseCluster
|
|
from helpers.test_tools import TSV
|
|
from helpers.test_tools import assert_eq_with_retry
|
|
|
|
cluster = ClickHouseCluster(__file__)
|
|
|
|
|
|
def _fill_nodes(nodes, table_name):
|
|
for node in nodes:
|
|
node.query(
|
|
"""
|
|
CREATE DATABASE IF NOT EXISTS test;
|
|
CREATE TABLE IF NOT EXISTS {0}(date Date, id UInt32)
|
|
ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/{0}', '{1}')
|
|
ORDER BY id PARTITION BY toYYYYMM(date);
|
|
""".format(
|
|
table_name, node.name
|
|
)
|
|
)
|
|
|
|
|
|
node1 = cluster.add_instance(
|
|
"node1",
|
|
main_configs=["configs/listen_host.xml"],
|
|
with_zookeeper=True,
|
|
ipv6_address="2001:3984:3989::1:1111",
|
|
)
|
|
node2 = cluster.add_instance(
|
|
"node2",
|
|
main_configs=["configs/listen_host.xml", "configs/dns_update_long.xml"],
|
|
with_zookeeper=True,
|
|
ipv6_address="2001:3984:3989::1:1112",
|
|
)
|
|
|
|
|
|
@pytest.fixture(scope="module")
|
|
def cluster_without_dns_cache_update():
|
|
try:
|
|
cluster.start()
|
|
|
|
_fill_nodes([node1, node2], "test_table_drop")
|
|
|
|
yield cluster
|
|
|
|
except Exception as ex:
|
|
print(ex)
|
|
|
|
finally:
|
|
cluster.shutdown()
|
|
pass
|
|
|
|
|
|
# node1 is a source, node2 downloads data
|
|
# node2 has long dns_cache_update_period, so dns cache update wouldn't work
|
|
def test_ip_change_drop_dns_cache(cluster_without_dns_cache_update):
|
|
# First we check, that normal replication works
|
|
node1.query(
|
|
"INSERT INTO test_table_drop VALUES ('2018-10-01', 1), ('2018-10-02', 2), ('2018-10-03', 3)"
|
|
)
|
|
assert node1.query("SELECT count(*) from test_table_drop") == "3\n"
|
|
assert_eq_with_retry(node2, "SELECT count(*) from test_table_drop", "3")
|
|
|
|
# We change source node ip
|
|
cluster.restart_instance_with_ip_change(node1, "2001:3984:3989::1:7777")
|
|
|
|
# Put some data to source node1
|
|
node1.query(
|
|
"INSERT INTO test_table_drop VALUES ('2018-10-01', 5), ('2018-10-02', 6), ('2018-10-03', 7)"
|
|
)
|
|
# Check that data is placed on node1
|
|
assert node1.query("SELECT count(*) from test_table_drop") == "6\n"
|
|
|
|
# Because of DNS cache dest node2 cannot download data from node1
|
|
with pytest.raises(Exception):
|
|
assert_eq_with_retry(node2, "SELECT count(*) from test_table_drop", "6")
|
|
|
|
# drop DNS cache
|
|
node2.query("SYSTEM DROP DNS CACHE")
|
|
# Data is downloaded
|
|
assert_eq_with_retry(node2, "SELECT count(*) from test_table_drop", "6")
|
|
|
|
# Just to be sure check one more time
|
|
node1.query("INSERT INTO test_table_drop VALUES ('2018-10-01', 8)")
|
|
assert node1.query("SELECT count(*) from test_table_drop") == "7\n"
|
|
assert_eq_with_retry(node2, "SELECT count(*) from test_table_drop", "7")
|
|
|
|
|
|
node3 = cluster.add_instance(
|
|
"node3",
|
|
main_configs=["configs/listen_host.xml"],
|
|
with_zookeeper=True,
|
|
ipv6_address="2001:3984:3989::1:1113",
|
|
)
|
|
node4 = cluster.add_instance(
|
|
"node4",
|
|
main_configs=[
|
|
"configs/remote_servers.xml",
|
|
"configs/listen_host.xml",
|
|
"configs/dns_update_short.xml",
|
|
],
|
|
with_zookeeper=True,
|
|
ipv6_address="2001:3984:3989::1:1114",
|
|
)
|
|
|
|
|
|
@pytest.fixture(scope="module")
|
|
def cluster_with_dns_cache_update():
|
|
try:
|
|
cluster.start()
|
|
|
|
_fill_nodes([node3, node4], "test_table_update")
|
|
|
|
yield cluster
|
|
|
|
except Exception as ex:
|
|
print(ex)
|
|
|
|
finally:
|
|
cluster.shutdown()
|
|
pass
|
|
|
|
|
|
# node3 is a source, node4 downloads data
|
|
# node4 has short dns_cache_update_period, so testing update of dns cache
|
|
def test_ip_change_update_dns_cache(cluster_with_dns_cache_update):
|
|
# First we check, that normal replication works
|
|
node3.query(
|
|
"INSERT INTO test_table_update VALUES ('2018-10-01', 1), ('2018-10-02', 2), ('2018-10-03', 3)"
|
|
)
|
|
assert node3.query("SELECT count(*) from test_table_update") == "3\n"
|
|
assert_eq_with_retry(node4, "SELECT count(*) from test_table_update", "3")
|
|
|
|
# We change source node ip
|
|
cluster.restart_instance_with_ip_change(node3, "2001:3984:3989::1:8888")
|
|
|
|
# Put some data to source node3
|
|
node3.query(
|
|
"INSERT INTO test_table_update VALUES ('2018-10-01', 5), ('2018-10-02', 6), ('2018-10-03', 7)"
|
|
)
|
|
|
|
# Check that data is placed on node3
|
|
assert node3.query("SELECT count(*) from test_table_update") == "6\n"
|
|
|
|
curl_result = node4.exec_in_container(["bash", "-c", "curl -s 'node3:8123'"])
|
|
assert curl_result == "Ok.\n"
|
|
cat_resolv = node4.exec_in_container(["bash", "-c", "cat /etc/resolv.conf"])
|
|
print(("RESOLV {}".format(cat_resolv)))
|
|
|
|
assert_eq_with_retry(
|
|
node4, "SELECT * FROM remote('node3', 'system', 'one')", "0", sleep_time=0.5
|
|
)
|
|
|
|
# Because of DNS cache update, ip of node3 would be updated
|
|
assert_eq_with_retry(
|
|
node4, "SELECT count(*) from test_table_update", "6", sleep_time=3
|
|
)
|
|
|
|
# Just to be sure check one more time
|
|
node3.query("INSERT INTO test_table_update VALUES ('2018-10-01', 8)")
|
|
assert node3.query("SELECT count(*) from test_table_update") == "7\n"
|
|
assert_eq_with_retry(node4, "SELECT count(*) from test_table_update", "7")
|
|
|
|
|
|
def set_hosts(node, hosts):
|
|
new_content = "\\n".join(["127.0.0.1 localhost", "::1 localhost"] + hosts)
|
|
node.exec_in_container(
|
|
["bash", "-c", 'echo -e "{}" > /etc/hosts'.format(new_content)],
|
|
privileged=True,
|
|
user="root",
|
|
)
|
|
|
|
|
|
def test_dns_cache_update(cluster_with_dns_cache_update):
|
|
set_hosts(node4, ["127.255.255.255 lost_host"])
|
|
|
|
with pytest.raises(QueryRuntimeException):
|
|
node4.query("SELECT * FROM remote('lost_host', 'system', 'one')")
|
|
|
|
node4.query(
|
|
"CREATE TABLE distributed_lost_host (dummy UInt8) ENGINE = Distributed(lost_host_cluster, 'system', 'one')"
|
|
)
|
|
with pytest.raises(QueryRuntimeException):
|
|
node4.query("SELECT * FROM distributed_lost_host")
|
|
|
|
set_hosts(node4, ["127.0.0.1 lost_host"])
|
|
|
|
# Wait a bit until dns cache will be updated
|
|
assert_eq_with_retry(
|
|
node4, "SELECT * FROM remote('lost_host', 'system', 'one')", "0"
|
|
)
|
|
assert_eq_with_retry(node4, "SELECT * FROM distributed_lost_host", "0")
|
|
|
|
assert TSV(
|
|
node4.query(
|
|
"SELECT DISTINCT host_name, host_address FROM system.clusters WHERE cluster='lost_host_cluster'"
|
|
)
|
|
) == TSV("lost_host\t127.0.0.1\n")
|
|
assert TSV(node4.query("SELECT hostName()")) == TSV("node4")
|
|
|
|
|
|
# Check SYSTEM DROP DNS CACHE on node5 and background cache update on node6
|
|
node5 = cluster.add_instance(
|
|
"node5",
|
|
main_configs=["configs/listen_host.xml", "configs/dns_update_long.xml"],
|
|
user_configs=["configs/users_with_hostname.xml"],
|
|
ipv6_address="2001:3984:3989::1:1115",
|
|
)
|
|
node6 = cluster.add_instance(
|
|
"node6",
|
|
main_configs=["configs/listen_host.xml", "configs/dns_update_short.xml"],
|
|
user_configs=["configs/users_with_hostname.xml"],
|
|
ipv6_address="2001:3984:3989::1:1116",
|
|
)
|
|
|
|
|
|
@pytest.mark.parametrize("node", [node5, node6])
|
|
def test_user_access_ip_change(cluster_with_dns_cache_update, node):
|
|
node_name = node.name
|
|
node_num = node.name[-1]
|
|
# getaddrinfo(...) may hang for a log time without this options
|
|
node.exec_in_container(
|
|
[
|
|
"bash",
|
|
"-c",
|
|
'echo -e "options timeout:1\noptions attempts:2" >> /etc/resolv.conf',
|
|
],
|
|
privileged=True,
|
|
user="root",
|
|
)
|
|
|
|
assert (
|
|
node3.query("SELECT * FROM remote('{}', 'system', 'one')".format(node_name))
|
|
== "0\n"
|
|
)
|
|
assert (
|
|
node4.query("SELECT * FROM remote('{}', 'system', 'one')".format(node_name))
|
|
== "0\n"
|
|
)
|
|
|
|
set_hosts(
|
|
node,
|
|
[
|
|
"127.255.255.255 node3",
|
|
"2001:3984:3989::1:88{}4 unknown_host".format(node_num),
|
|
],
|
|
)
|
|
|
|
cluster.restart_instance_with_ip_change(
|
|
node3, "2001:3984:3989::1:88{}3".format(node_num)
|
|
)
|
|
cluster.restart_instance_with_ip_change(
|
|
node4, "2001:3984:3989::1:88{}4".format(node_num)
|
|
)
|
|
|
|
with pytest.raises(QueryRuntimeException):
|
|
node3.query("SELECT * FROM remote('{}', 'system', 'one')".format(node_name))
|
|
with pytest.raises(QueryRuntimeException):
|
|
node4.query("SELECT * FROM remote('{}', 'system', 'one')".format(node_name))
|
|
# now wrong addresses are cached
|
|
|
|
set_hosts(node, [])
|
|
retry_count = 60
|
|
if node_name == "node5":
|
|
# client is not allowed to connect, so execute it directly in container to send query from localhost
|
|
node.exec_in_container(
|
|
["bash", "-c", 'clickhouse client -q "SYSTEM DROP DNS CACHE"'],
|
|
privileged=True,
|
|
user="root",
|
|
)
|
|
retry_count = 1
|
|
|
|
assert_eq_with_retry(
|
|
node3,
|
|
"SELECT * FROM remote('{}', 'system', 'one')".format(node_name),
|
|
"0",
|
|
retry_count=retry_count,
|
|
sleep_time=1,
|
|
)
|
|
assert_eq_with_retry(
|
|
node4,
|
|
"SELECT * FROM remote('{}', 'system', 'one')".format(node_name),
|
|
"0",
|
|
retry_count=retry_count,
|
|
sleep_time=1,
|
|
)
|
|
|
|
|
|
def test_host_is_drop_from_cache_after_consecutive_failures(
|
|
cluster_with_dns_cache_update,
|
|
):
|
|
with pytest.raises(QueryRuntimeException):
|
|
node4.query(
|
|
"SELECT * FROM remote('InvalidHostThatDoesNotExist', 'system', 'one')"
|
|
)
|
|
|
|
# Note that the list of hosts in variable since lost_host will be there too (and it's dropped and added back)
|
|
# dns_update_short -> dns_max_consecutive_failures set to 6
|
|
assert node4.wait_for_log_line(
|
|
"Cannot resolve host \\(InvalidHostThatDoesNotExist\\), error 0: Host not found."
|
|
)
|
|
assert node4.wait_for_log_line(
|
|
"Cached hosts not found:.*InvalidHostThatDoesNotExist**",
|
|
repetitions=6,
|
|
timeout=60,
|
|
look_behind_lines=500,
|
|
)
|
|
assert node4.wait_for_log_line(
|
|
"Cached hosts dropped:.*InvalidHostThatDoesNotExist.*"
|
|
)
|