def test_zookeeper_rescale(self):
"""
test scenario for ZK
CH 1 -> 2 wait complete + ZK 1 -> 3 nowait
CH 2 -> 1 wait complete + ZK 3 -> 1 nowait
CH 1 -> 2 wait complete + ZK 1 -> 3 nowait
"""
def insert_replicated_data(chi, create_tables, insert_tables):
with When(f'create if not exists replicated tables {create_tables}'):
for table in create_tables:
clickhouse.create_table_on_cluster(
chi,
'all-sharded',
f'default.{table}',
f'(id UInt64) ENGINE=ReplicatedMergeTree(\'/clickhouse/tables/default.{table}/{{shard}}\',\'{{replica}}\') ORDER BY (id)',
if_not_exists=True,
)
with When(f'insert tables data {insert_tables}'):
for table in insert_tables:
clickhouse.query(
chi['metadata']['name'],
f'INSERT INTO default.{table} SELECT rand()+number FROM numbers(1000)',
pod="chi-test-cluster-for-zk-default-0-1-0")
def check_zk_root_znode(chi, pod_count, zk_retry=5):
for pod_num in range(pod_count):
out = ""
for i in range(zk_retry):
out = kubectl.launch(
f"exec zookeeper-{pod_num} -- bash -ce './bin/zkCli.sh ls /'",
ns=settings.test_namespace,
ok_to_fail=True)
if "[clickhouse, zookeeper]" in out:
break
else:
with Then(
f"Zookeeper ROOT NODE not ready, wait { (i+1)*3} sec"
):
time.sleep((i + 1) * 3)
assert "[clickhouse, zookeeper]" in out, "Unexpected `zkCli.sh ls /` output"
out = clickhouse.query(
chi["metadata"]["name"],
"SELECT count() FROM system.zookeeper WHERE path='/'")
assert "2" == out.strip(
" \t\r\n"
), f"Unexpected `SELECT count() FROM system.zookeeper WHERE path='/'` output {out}"
def rescale_zk_and_clickhouse(ch_node_count,
zk_node_count,
first_install=False):
zk_manifest = 'zookeeper-1-node-1GB-for-tests-only.yaml' if zk_node_count == 1 else 'zookeeper-3-nodes-1GB-for-tests-only.yaml'
_, chi = util.install_clickhouse_and_zookeeper(
chi_file=
f'manifests/chi/test-cluster-for-zookeeper-{ch_node_count}.yaml',
chi_template_file='manifests/chit/tpl-clickhouse-latest.yaml',
chi_name='test-cluster-for-zk',
zk_manifest=zk_manifest,
clean_ns=first_install,
force_zk_install=True,
zk_install_first=first_install,
make_object_count=False,
)
return chi
with When("Clean exists ClickHouse and Zookeeper"):
kubectl.delete_all_zookeeper(settings.test_namespace)
kubectl.delete_all_chi(settings.test_namespace)
with When("Install CH 1 node ZK 1 node"):
chi = rescale_zk_and_clickhouse(ch_node_count=1,
zk_node_count=1,
first_install=True)
util.wait_clickhouse_cluster_ready(chi)
wait_zookeeper_ready(pod_count=1)
check_zk_root_znode(chi, pod_count=1)
util.wait_clickhouse_cluster_ready(chi)
wait_clickhouse_no_readonly_replicas(chi)
insert_replicated_data(chi,
create_tables=['test_repl1'],
insert_tables=['test_repl1'])
total_iterations = 5
for iteration in range(total_iterations):
with When(f"ITERATION {iteration}"):
with Then("CH 1 -> 2 wait complete + ZK 1 -> 3 nowait"):
chi = rescale_zk_and_clickhouse(ch_node_count=2,
zk_node_count=3)
wait_zookeeper_ready(pod_count=3)
check_zk_root_znode(chi, pod_count=3)
util.wait_clickhouse_cluster_ready(chi)
insert_replicated_data(
chi,
create_tables=['test_repl2'],
insert_tables=['test_repl1', 'test_repl2'])
with Then("CH 2 -> 1 wait complete + ZK 3 -> 1 nowait"):
chi = rescale_zk_and_clickhouse(ch_node_count=1,
zk_node_count=1)
wait_zookeeper_ready(pod_count=1)
check_zk_root_znode(chi, pod_count=1)
util.wait_clickhouse_cluster_ready(chi)
insert_replicated_data(
chi,
create_tables=['test_repl3'],
insert_tables=['test_repl1', 'test_repl2', 'test_repl3'])
with When("CH 1 -> 2 wait complete + ZK 1 -> 3 nowait"):
chi = rescale_zk_and_clickhouse(ch_node_count=2, zk_node_count=3)
check_zk_root_znode(chi, pod_count=3)
with Then('check data in tables'):
for table, exptected_rows in {
"test_repl1": str(1000 + 2000 * total_iterations),
"test_repl2": str(2000 * total_iterations),
"test_repl3": str(1000 * total_iterations)
}.items():
actual_rows = clickhouse.query(
chi['metadata']['name'],
f'SELECT count() FROM default.{table}',
pod="chi-test-cluster-for-zk-default-0-1-0")
assert actual_rows == exptected_rows, f"Invalid rows counter after inserts {table} expected={exptected_rows} actual={actual_rows}"
with Then('drop all created tables'):
for i in range(3):
clickhouse.drop_table_on_cluster(chi, 'all-sharded',
f'default.test_repl{i+1}')
def clean_namespace(delete_chi=False):
with Given(f"Clean namespace {settings.test_namespace}"):
if delete_chi:
kubectl.delete_all_chi(settings.test_namespace)
kubectl.delete_ns(settings.test_namespace, ok_to_fail=True)
kubectl.create_ns(settings.test_namespace)
def test_keeper_outline(
self,
keeper_type="zookeeper",
pod_for_insert_data="chi-test-cluster-for-zk-default-0-1-0",
keeper_manifest_1_node='zookeeper-1-node-1GB-for-tests-only.yaml',
keeper_manifest_3_node='zookeeper-3-nodes-1GB-for-tests-only.yaml',
):
"""
test scenario for Zoo/Clickhouse Keeper
CH 1 -> 2 wait complete + Keeper 1 -> 3 nowait
CH 2 -> 1 wait complete + Keeper 3 -> 1 nowait
CH 1 -> 2 wait complete + Keeper 1 -> 3 nowait
"""
def insert_replicated_data(chi, create_tables, insert_tables):
with When(f'create if not exists replicated tables {create_tables}'):
for table in create_tables:
clickhouse.create_table_on_cluster(
chi,
'all-sharded',
f'default.{table}',
f'(id UInt64) ENGINE=ReplicatedMergeTree(\'/clickhouse/tables/default.{table}/{{shard}}\',\'{{replica}}\') ORDER BY (id)',
if_not_exists=True,
)
with When(f'insert tables data {insert_tables}'):
for table in insert_tables:
clickhouse.query(
chi['metadata']['name'],
f'INSERT INTO default.{table} SELECT rand()+number FROM numbers(1000)',
pod=pod_for_insert_data)
def check_zk_root_znode(chi, pod_count, retry_count=5):
for pod_num in range(pod_count):
out = ""
expected_out = ""
for i in range(retry_count):
if keeper_type == "zookeeper-operator":
expected_out = "[clickhouse, zookeeper, zookeeper-operator]"
keeper_cmd = './bin/zkCli.sh ls /'
pod_prefix = "zookeeper"
elif keeper_type == "zookeeper":
expected_out = "[clickhouse, zookeeper]"
keeper_cmd = './bin/zkCli.sh ls /'
pod_prefix = "zookeeper"
else:
expected_out = "clickhouse"
keeper_cmd = "if [[ ! $(command -v zookeepercli) ]]; then "
keeper_cmd += "wget -q -O /tmp/zookeepercli.deb https://github.com/outbrain/zookeepercli/releases/download/v1.0.12/zookeepercli_1.0.12_amd64.deb; "
keeper_cmd += "dpkg -i /tmp/zookeepercli.deb; "
keeper_cmd += "fi; "
keeper_cmd += "zookeepercli -servers 127.0.0.1:2181 -c ls /"
pod_prefix = "clickhouse-keeper"
out = kubectl.launch(
f"exec {pod_prefix}-{pod_num} -- bash -ce '{keeper_cmd}'",
ns=settings.test_namespace,
ok_to_fail=True)
if expected_out in out:
break
else:
with Then(
f"{keeper_type} ROOT NODE not ready, wait {(i + 1) * 3} sec"
):
time.sleep((i + 1) * 3)
assert expected_out in out, f"Unexpected {keeper_type} `ls /` output"
out = clickhouse.query(
chi["metadata"]["name"],
"SELECT count() FROM system.zookeeper WHERE path='/'")
expected_out = {
"zookeeper": "2",
"zookeeper-operator": "3",
"clickhouse-keeper": "1",
}
assert expected_out[keeper_type] == out.strip(
" \t\r\n"
), f"Unexpected `SELECT count() FROM system.zookeeper WHERE path='/'` output {out}"
def rescale_zk_and_clickhouse(ch_node_count,
keeper_node_count,
first_install=False):
keeper_manifest = keeper_manifest_1_node if keeper_node_count == 1 else keeper_manifest_3_node
_, chi = util.install_clickhouse_and_keeper(
chi_file=
f'manifests/chi/test-cluster-for-{keeper_type}-{ch_node_count}.yaml',
chi_template_file='manifests/chit/tpl-clickhouse-latest.yaml',
chi_name='test-cluster-for-zk',
keeper_manifest=keeper_manifest,
keeper_type=keeper_type,
clean_ns=first_install,
force_keeper_install=True,
keeper_install_first=first_install,
make_object_count=False,
)
return chi
with When("Clean exists ClickHouse Keeper and ZooKeeper"):
kubectl.delete_all_chi(settings.test_namespace)
kubectl.delete_all_keeper(settings.test_namespace)
with When("Install CH 1 node ZK 1 node"):
chi = rescale_zk_and_clickhouse(ch_node_count=1,
keeper_node_count=1,
first_install=True)
util.wait_clickhouse_cluster_ready(chi)
wait_keeper_ready(keeper_type=keeper_type, pod_count=1)
check_zk_root_znode(chi, pod_count=1)
util.wait_clickhouse_cluster_ready(chi)
wait_clickhouse_no_readonly_replicas(chi)
insert_replicated_data(chi,
create_tables=['test_repl1'],
insert_tables=['test_repl1'])
total_iterations = 3
for iteration in range(total_iterations):
with When(f"ITERATION {iteration}"):
with Then("CH 1 -> 2 wait complete + ZK 1 -> 3 nowait"):
chi = rescale_zk_and_clickhouse(ch_node_count=2,
keeper_node_count=3)
wait_keeper_ready(keeper_type=keeper_type, pod_count=3)
check_zk_root_znode(chi, pod_count=3)
util.wait_clickhouse_cluster_ready(chi)
wait_clickhouse_no_readonly_replicas(chi)
insert_replicated_data(
chi,
create_tables=['test_repl2'],
insert_tables=['test_repl1', 'test_repl2'])
with Then("CH 2 -> 1 wait complete + ZK 3 -> 1 nowait"):
chi = rescale_zk_and_clickhouse(ch_node_count=1,
keeper_node_count=1)
wait_keeper_ready(keeper_type=keeper_type, pod_count=1)
check_zk_root_znode(chi, pod_count=1)
util.wait_clickhouse_cluster_ready(chi)
wait_clickhouse_no_readonly_replicas(chi)
insert_replicated_data(
chi,
create_tables=['test_repl3'],
insert_tables=['test_repl1', 'test_repl2', 'test_repl3'])
with When("CH 1 -> 2 wait complete + ZK 1 -> 3 nowait"):
chi = rescale_zk_and_clickhouse(ch_node_count=2, keeper_node_count=3)
check_zk_root_znode(chi, pod_count=3)
with Then('check data in tables'):
for table_name, exptected_rows in {
"test_repl1": str(1000 + 2000 * total_iterations),
"test_repl2": str(2000 * total_iterations),
"test_repl3": str(1000 * total_iterations)
}.items():
actual_rows = clickhouse.query(
chi['metadata']['name'],
f'SELECT count() FROM default.{table_name}',
pod="chi-test-cluster-for-zk-default-0-1-0")
assert actual_rows == exptected_rows, f"Invalid rows counter after inserts {table_name} expected={exptected_rows} actual={actual_rows}"
with Then('drop all created tables'):
for i in range(3):
clickhouse.drop_table_on_cluster(chi, 'all-sharded',
f'default.test_repl{i + 1}')