mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-25 00:52:02 +00:00
425 lines
14 KiB
Python
425 lines
14 KiB
Python
import os
|
|
import subprocess
|
|
import time
|
|
import logging
|
|
import docker
|
|
|
|
|
|
class PartitionManager:
|
|
"""Allows introducing failures in the network between docker containers.
|
|
|
|
Can act as a context manager:
|
|
|
|
with PartitionManager() as pm:
|
|
pm.partition_instances(instance1, instance2)
|
|
...
|
|
# At exit all partitions are removed automatically.
|
|
|
|
"""
|
|
|
|
def __init__(self):
|
|
self._iptables_rules = []
|
|
self._netem_delayed_instances = []
|
|
_NetworkManager.get()
|
|
|
|
def drop_instance_zk_connections(self, instance, action="DROP"):
|
|
self._check_instance(instance)
|
|
|
|
self._add_rule(
|
|
{"source": instance.ip_address, "destination_port": 2181, "action": action}
|
|
)
|
|
self._add_rule(
|
|
{"destination": instance.ip_address, "source_port": 2181, "action": action}
|
|
)
|
|
|
|
def restore_instance_zk_connections(self, instance, action="DROP"):
|
|
self._check_instance(instance)
|
|
|
|
self._delete_rule(
|
|
{"source": instance.ip_address, "destination_port": 2181, "action": action}
|
|
)
|
|
self._delete_rule(
|
|
{"destination": instance.ip_address, "source_port": 2181, "action": action}
|
|
)
|
|
|
|
def partition_instances(self, left, right, port=None, action="DROP"):
|
|
self._check_instance(left)
|
|
self._check_instance(right)
|
|
|
|
def create_rule(src, dst):
|
|
rule = {
|
|
"source": src.ip_address,
|
|
"destination": dst.ip_address,
|
|
"action": action,
|
|
}
|
|
if port is not None:
|
|
rule["destination_port"] = port
|
|
return rule
|
|
|
|
self._add_rule(create_rule(left, right))
|
|
self._add_rule(create_rule(right, left))
|
|
|
|
def add_network_delay(self, instance, delay_ms):
|
|
self._add_tc_netem_delay(instance, delay_ms)
|
|
|
|
def heal_all(self):
|
|
while self._iptables_rules:
|
|
rule = self._iptables_rules.pop()
|
|
_NetworkManager.get().delete_iptables_rule(**rule)
|
|
|
|
while self._netem_delayed_instances:
|
|
instance = self._netem_delayed_instances.pop()
|
|
instance.exec_in_container(
|
|
["bash", "-c", "tc qdisc del dev eth0 root netem"], user="root"
|
|
)
|
|
|
|
def pop_rules(self):
|
|
res = self._iptables_rules[:]
|
|
self.heal_all()
|
|
return res
|
|
|
|
def push_rules(self, rules):
|
|
for rule in rules:
|
|
self._add_rule(rule)
|
|
|
|
@staticmethod
|
|
def _check_instance(instance):
|
|
if instance.ip_address is None:
|
|
raise Exception("Instance + " + instance.name + " is not launched!")
|
|
|
|
def _add_rule(self, rule):
|
|
_NetworkManager.get().add_iptables_rule(**rule)
|
|
self._iptables_rules.append(rule)
|
|
|
|
def _delete_rule(self, rule):
|
|
_NetworkManager.get().delete_iptables_rule(**rule)
|
|
self._iptables_rules.remove(rule)
|
|
|
|
def _add_tc_netem_delay(self, instance, delay_ms):
|
|
instance.exec_in_container(
|
|
[
|
|
"bash",
|
|
"-c",
|
|
"tc qdisc add dev eth0 root netem delay {}ms".format(delay_ms),
|
|
],
|
|
user="root",
|
|
)
|
|
self._netem_delayed_instances.append(instance)
|
|
|
|
def __enter__(self):
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
self.heal_all()
|
|
|
|
def __del__(self):
|
|
self.heal_all()
|
|
|
|
|
|
class PartitionManagerDisabler:
|
|
def __init__(self, manager):
|
|
self.manager = manager
|
|
self.rules = self.manager.pop_rules()
|
|
|
|
def __enter__(self):
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
self.manager.push_rules(self.rules)
|
|
|
|
|
|
class _NetworkManager:
|
|
"""Execute commands inside a container with access to network settings.
|
|
|
|
We need to call iptables to create partitions, but we want to avoid sudo.
|
|
The way to circumvent this restriction is to run iptables in a container with network=host.
|
|
The container is long-running and periodically renewed - this is an optimization to avoid the overhead
|
|
of container creation on each call.
|
|
Source of the idea: https://github.com/worstcase/blockade/blob/master/blockade/host.py
|
|
"""
|
|
|
|
# Singleton instance.
|
|
_instance = None
|
|
|
|
@classmethod
|
|
def get(cls, **kwargs):
|
|
if cls._instance is None:
|
|
cls._instance = cls(**kwargs)
|
|
return cls._instance
|
|
|
|
def add_iptables_rule(self, **kwargs):
|
|
cmd = ["iptables", "--wait", "-I", "DOCKER-USER", "1"]
|
|
cmd.extend(self._iptables_cmd_suffix(**kwargs))
|
|
self._exec_run(cmd, privileged=True)
|
|
|
|
def delete_iptables_rule(self, **kwargs):
|
|
cmd = ["iptables", "--wait", "-D", "DOCKER-USER"]
|
|
cmd.extend(self._iptables_cmd_suffix(**kwargs))
|
|
self._exec_run(cmd, privileged=True)
|
|
|
|
@staticmethod
|
|
def clean_all_user_iptables_rules():
|
|
for i in range(1000):
|
|
iptables_iter = i
|
|
# when rules will be empty, it will return error
|
|
res = subprocess.run("iptables --wait -D DOCKER-USER 1", shell=True)
|
|
|
|
if res.returncode != 0:
|
|
logging.info(
|
|
"All iptables rules cleared, "
|
|
+ str(iptables_iter)
|
|
+ " iterations, last error: "
|
|
+ str(res.stderr)
|
|
)
|
|
return
|
|
|
|
@staticmethod
|
|
def _iptables_cmd_suffix(
|
|
source=None,
|
|
destination=None,
|
|
source_port=None,
|
|
destination_port=None,
|
|
action=None,
|
|
probability=None,
|
|
custom_args=None,
|
|
):
|
|
ret = []
|
|
if probability is not None:
|
|
ret.extend(
|
|
[
|
|
"-m",
|
|
"statistic",
|
|
"--mode",
|
|
"random",
|
|
"--probability",
|
|
str(probability),
|
|
]
|
|
)
|
|
ret.extend(["-p", "tcp"])
|
|
if source is not None:
|
|
ret.extend(["-s", source])
|
|
if destination is not None:
|
|
ret.extend(["-d", destination])
|
|
if source_port is not None:
|
|
ret.extend(["--sport", str(source_port)])
|
|
if destination_port is not None:
|
|
ret.extend(["--dport", str(destination_port)])
|
|
if action is not None:
|
|
ret.extend(["-j"] + action.split())
|
|
if custom_args is not None:
|
|
ret.extend(custom_args)
|
|
return ret
|
|
|
|
def __init__(
|
|
self,
|
|
container_expire_timeout=50,
|
|
container_exit_timeout=60,
|
|
docker_api_version=os.environ.get("DOCKER_API_VERSION"),
|
|
):
|
|
|
|
self.container_expire_timeout = container_expire_timeout
|
|
self.container_exit_timeout = container_exit_timeout
|
|
|
|
self._docker_client = docker.DockerClient(
|
|
base_url="unix:///var/run/docker.sock",
|
|
version=docker_api_version,
|
|
timeout=600,
|
|
)
|
|
|
|
self._container = None
|
|
|
|
self._ensure_container()
|
|
|
|
def _ensure_container(self):
|
|
if self._container is None or self._container_expire_time <= time.time():
|
|
|
|
for i in range(5):
|
|
if self._container is not None:
|
|
try:
|
|
logging.debug("[network] Removing %s", self._container.id)
|
|
self._container.remove(force=True)
|
|
break
|
|
except docker.errors.NotFound:
|
|
break
|
|
except Exception as ex:
|
|
print(
|
|
"Error removing network blocade container, will try again",
|
|
str(ex),
|
|
)
|
|
time.sleep(i)
|
|
|
|
image = subprocess.check_output(
|
|
"docker images -q clickhouse/integration-helper 2>/dev/null", shell=True
|
|
)
|
|
if not image.strip():
|
|
print("No network image helper, will try download")
|
|
# for some reason docker api may hang if image doesn't exist, so we download it
|
|
# before running
|
|
for i in range(5):
|
|
try:
|
|
subprocess.check_call( # STYLE_CHECK_ALLOW_SUBPROCESS_CHECK_CALL
|
|
"docker pull clickhouse/integration-helper", shell=True
|
|
)
|
|
break
|
|
except:
|
|
time.sleep(i)
|
|
else:
|
|
raise Exception("Cannot pull clickhouse/integration-helper image")
|
|
|
|
self._container = self._docker_client.containers.run(
|
|
"clickhouse/integration-helper",
|
|
auto_remove=True,
|
|
command=("sleep %s" % self.container_exit_timeout),
|
|
# /run/xtables.lock passed inside for correct iptables --wait
|
|
volumes={
|
|
"/run/xtables.lock": {"bind": "/run/xtables.lock", "mode": "ro"}
|
|
},
|
|
detach=True,
|
|
network_mode="host",
|
|
)
|
|
logging.debug("[network] Created new container %s", self._container.id)
|
|
self._container_expire_time = time.time() + self.container_expire_timeout
|
|
|
|
return self._container
|
|
|
|
def _exec_run_with_retry(self, cmd, retry_count, **kwargs):
|
|
for i in range(retry_count):
|
|
try:
|
|
self._exec_run(cmd, **kwargs)
|
|
except subprocess.CalledProcessError as e:
|
|
logging.error(f"_exec_run failed for {cmd}, {e}")
|
|
|
|
def _exec_run(self, cmd, **kwargs):
|
|
container = self._ensure_container()
|
|
|
|
handle = self._docker_client.api.exec_create(container.id, cmd, **kwargs)
|
|
output = self._docker_client.api.exec_start(handle).decode("utf8")
|
|
exit_code = self._docker_client.api.exec_inspect(handle)["ExitCode"]
|
|
|
|
logging.debug(
|
|
"[network] %s: %s (%s): %s", container.id, cmd, exit_code, output.strip()
|
|
)
|
|
|
|
if exit_code != 0:
|
|
print(output)
|
|
raise subprocess.CalledProcessError(exit_code, cmd)
|
|
|
|
return output
|
|
|
|
|
|
# Approximately mesure network I/O speed for interface
|
|
class NetThroughput(object):
|
|
def __init__(self, node):
|
|
self.node = node
|
|
# trying to get default interface and check it in /proc/net/dev
|
|
self.interface = self.node.exec_in_container(
|
|
[
|
|
"bash",
|
|
"-c",
|
|
"awk '{print $1 \" \" $2}' /proc/net/route | grep 00000000 | awk '{print $1}'",
|
|
]
|
|
).strip()
|
|
check = self.node.exec_in_container(
|
|
["bash", "-c", f'grep "^ *{self.interface}:" /proc/net/dev']
|
|
).strip()
|
|
if not check: # if check is not successful just try eth{1-10}
|
|
for i in range(10):
|
|
try:
|
|
self.interface = self.node.exec_in_container(
|
|
[
|
|
"bash",
|
|
"-c",
|
|
f"awk '{{print $1}}' /proc/net/route | grep 'eth{i}'",
|
|
]
|
|
).strip()
|
|
break
|
|
except Exception as ex:
|
|
print(f"No interface eth{i}")
|
|
else:
|
|
raise Exception(
|
|
"No interface eth{1-10} and default interface not specified in /proc/net/route, maybe some special network configuration"
|
|
)
|
|
|
|
try:
|
|
check = self.node.exec_in_container(
|
|
["bash", "-c", f'grep "^ *{self.interface}:" /proc/net/dev']
|
|
).strip()
|
|
if not check:
|
|
raise Exception(
|
|
f"No such interface {self.interface} found in /proc/net/dev"
|
|
)
|
|
except:
|
|
logging.error(
|
|
"All available interfaces %s",
|
|
self.node.exec_in_container(["bash", "-c", "cat /proc/net/dev"]),
|
|
)
|
|
raise Exception(
|
|
f"No such interface {self.interface} found in /proc/net/dev"
|
|
)
|
|
|
|
self.current_in = self._get_in_bytes()
|
|
self.current_out = self._get_out_bytes()
|
|
self.measure_time = time.time()
|
|
|
|
def _get_in_bytes(self):
|
|
try:
|
|
result = self.node.exec_in_container(
|
|
[
|
|
"bash",
|
|
"-c",
|
|
f'awk "/^ *{self.interface}:/"\' {{ if ($1 ~ /.*:[0-9][0-9]*/) {{ sub(/^.*:/, "") ; print $1 }} else {{ print $2 }} }}\' /proc/net/dev',
|
|
]
|
|
)
|
|
except:
|
|
raise Exception(
|
|
f"Cannot receive in bytes from /proc/net/dev for interface {self.interface}"
|
|
)
|
|
|
|
try:
|
|
return int(result)
|
|
except:
|
|
raise Exception(
|
|
f"Got non-numeric in bytes '{result}' from /proc/net/dev for interface {self.interface}"
|
|
)
|
|
|
|
def _get_out_bytes(self):
|
|
try:
|
|
result = self.node.exec_in_container(
|
|
[
|
|
"bash",
|
|
"-c",
|
|
f"awk \"/^ *{self.interface}:/\"' {{ if ($1 ~ /.*:[0-9][0-9]*/) {{ print $9 }} else {{ print $10 }} }}' /proc/net/dev",
|
|
]
|
|
)
|
|
except:
|
|
raise Exception(
|
|
f"Cannot receive out bytes from /proc/net/dev for interface {self.interface}"
|
|
)
|
|
|
|
try:
|
|
return int(result)
|
|
except:
|
|
raise Exception(
|
|
f"Got non-numeric out bytes '{result}' from /proc/net/dev for interface {self.interface}"
|
|
)
|
|
|
|
def measure_speed(self, measure="bytes"):
|
|
new_in = self._get_in_bytes()
|
|
new_out = self._get_out_bytes()
|
|
current_time = time.time()
|
|
in_speed = (new_in - self.current_in) / (current_time - self.measure_time)
|
|
out_speed = (new_out - self.current_out) / (current_time - self.measure_time)
|
|
|
|
self.current_out = new_out
|
|
self.current_in = new_in
|
|
self.measure_time = current_time
|
|
|
|
if measure == "bytes":
|
|
return in_speed, out_speed
|
|
elif measure == "kilobytes":
|
|
return in_speed / 1024.0, out_speed / 1024.0
|
|
elif measure == "megabytes":
|
|
return in_speed / (1024 * 1024), out_speed / (1024 * 1024)
|
|
else:
|
|
raise Exception(f"Unknown measure {measure}")
|