nginx-too-many-close-wait复现

惯例先贴地址：https://github.com/tonyo/nginx-too-many-close-wait

环境

WSL

• Ubuntu 22.04.1 LTS on Windows 10 x86_64

• Docker version 20.10.21

• Python 3.10.6 [GCC 11.3.0] on linux

要求

1. docker
2. docker-compose
3. python3

Docker重现步骤（未能重现）

1.拉代码

git clone https://github.com/ainexur/nginx-too-many-close-wait.git
cd nginx-too-many-close-wait

2.启动

# 配置linux内核最大连接数
sudo sysctl -w net.core.somaxconn=8
# 第一个窗口
docker-compose up
# 第二个窗口
./run_load_tester.sh
# 第三个窗口
docker-compose exec nginx watch 'netstat -atunpl | grep CLOSE_WAIT'

docker-compose up 执行报错

Traceback (most recent call last):
File “/usr/lib/python3/dist-packages/urllib3/connectionpool.py”, line 699, in urlopen
httplib_response = self._make_request(
File “/usr/lib/python3/dist-packages/urllib3/connectionpool.py”, line 394, in _make_request
conn.request(method, url, **httplib_request_kw)
File “/usr/lib/python3.10/http/client.py”, line 1282, in request
self._send_request(method, url, body, headers, encode_chunked)
File “/usr/lib/python3.10/http/client.py”, line 1328, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File “/usr/lib/python3.10/http/client.py”, line 1277, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File “/usr/lib/python3.10/http/client.py”, line 1037, in _send_output
self.send(msg)
File “/usr/lib/python3.10/http/client.py”, line 975, in send
self.connect()
File “/usr/lib/python3/dist-packages/docker/transport/unixconn.py”, line 30, in connect
sock.connect(self.unix_socket)
FileNotFoundError: [Errno 2] No such file or directory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File “/usr/lib/python3/dist-packages/requests/adapters.py”, line 439, in send
resp = conn.urlopen(
File “/usr/lib/python3/dist-packages/urllib3/connectionpool.py”, line 755, in urlopen
retries = retries.increment(
File “/usr/lib/python3/dist-packages/urllib3/util/retry.py”, line 532, in increment
raise six.reraise(type(error), error, _stacktrace)
File “/usr/lib/python3/dist-packages/six.py”, line 718, in reraise
raise value.with_traceback(tb)
File “/usr/lib/python3/dist-packages/urllib3/connectionpool.py”, line 699, in urlopen
httplib_response = self._make_request(
File “/usr/lib/python3/dist-packages/urllib3/connectionpool.py”, line 394, in _make_request
conn.request(method, url, **httplib_request_kw)
File “/usr/lib/python3.10/http/client.py”, line 1282, in request
self._send_request(method, url, body, headers, encode_chunked)
File “/usr/lib/python3.10/http/client.py”, line 1328, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File “/usr/lib/python3.10/http/client.py”, line 1277, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File “/usr/lib/python3.10/http/client.py”, line 1037, in _send_output
self.send(msg)
File “/usr/lib/python3.10/http/client.py”, line 975, in send
self.connect()
File “/usr/lib/python3/dist-packages/docker/transport/unixconn.py”, line 30, in connect
sock.connect(self.unix_socket)
urllib3.exceptions.ProtocolError: (‘Connection aborted.’, FileNotFoundError(2, ‘No such file or directory’))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File “/usr/lib/python3/dist-packages/docker/api/client.py”, line 214, in _retrieve_server_version
return self.version(api_version=False)[“ApiVersion”]
File “/usr/lib/python3/dist-packages/docker/api/daemon.py”, line 181, in version
return self._result(self._get(url), json=True)
File “/usr/lib/python3/dist-packages/docker/utils/decorators.py”, line 46, in inner
return f(self, *args, **kwargs)
File “/usr/lib/python3/dist-packages/docker/api/client.py”, line 237, in _get
return self.get(url, **self._set_request_timeout(kwargs))
File “/usr/lib/python3/dist-packages/requests/sessions.py”, line 555, in get
return self.request(‘GET’, url, **kwargs)
File “/usr/lib/python3/dist-packages/requests/sessions.py”, line 542, in request
resp = self.send(prep, **send_kwargs)
File “/usr/lib/python3/dist-packages/requests/sessions.py”, line 655, in send
r = adapter.send(request, **kwargs)
File “/usr/lib/python3/dist-packages/requests/adapters.py”, line 498, in send
raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: (‘Connection aborted.’, FileNotFoundError(2, ‘No such file or directory’))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File “/usr/bin/docker-compose”, line 33, in
sys.exit(load_entry_point(‘docker-compose==1.29.2’, ‘console_scripts’, ‘docker-compose’)())
File “/usr/lib/python3/dist-packages/compose/cli/main.py”, line 81, in main
command_func()
File “/usr/lib/python3/dist-packages/compose/cli/main.py”, line 200, in perform_command
project = project_from_options(‘.’, options)
File “/usr/lib/python3/dist-packages/compose/cli/command.py”, line 60, in project_from_options
return get_project(
File “/usr/lib/python3/dist-packages/compose/cli/command.py”, line 152, in get_project
client = get_client(
File “/usr/lib/python3/dist-packages/compose/cli/docker_client.py”, line 41, in get_client
client = docker_client(
File “/usr/lib/python3/dist-packages/compose/cli/docker_client.py”, line 170, in docker_client
client = APIClient(use_ssh_client=not use_paramiko_ssh, **kwargs)
File “/usr/lib/python3/dist-packages/docker/api/client.py”, line 197, in init
self._version = self._retrieve_server_version()
File “/usr/lib/python3/dist-packages/docker/api/client.py”, line 221, in _retrieve_server_version
raise DockerException(
docker.errors.DockerException: Error while fetching server API version: (‘Connection aborted.’, FileNotFoundError(2, ‘No such file or directory’))

原因：WSL2不能使用传统的linux安转docker，可用curl https://get.docker.com | sh

# 查看docker状态
sudo service docker status
# 启动docker
sudo service docker start

自建环境

Configuration summary
  + using system PCRE library
  + OpenSSL library is not used
  + using system zlib library

  nginx path prefix: "/usr/local/nginx"
  nginx binary file: "/usr/local/nginx/sbin/nginx"
  nginx modules path: "/usr/local/nginx/modules"
  nginx configuration prefix: "/usr/local/nginx/conf"
  nginx configuration file: "/usr/local/nginx/conf/nginx.conf"
  nginx pid file: "/usr/local/nginx/logs/nginx.pid"
  nginx error log file: "/usr/local/nginx/logs/error.log"
  nginx http access log file: "/usr/local/nginx/logs/access.log"
  nginx http client request body temporary files: "client_body_temp"
  nginx http proxy temporary files: "proxy_temp"
  nginx http fastcgi temporary files: "fastcgi_temp"
  nginx http uwsgi temporary files: "uwsgi_temp"
  nginx http scgi temporary files: "scgi_temp"

Configuration summary
  + using system PCRE library
  + using system OpenSSL library
  + using system zlib library

  nginx path prefix: "/usr/local/openresty/nginx"
  nginx binary file: "/usr/local/openresty/nginx/sbin/nginx"
  nginx modules path: "/usr/local/openresty/nginx/modules"
  nginx configuration prefix: "/usr/local/openresty/nginx/conf"
  nginx configuration file: "/usr/local/openresty/nginx/conf/nginx.conf"
  nginx pid file: "/usr/local/openresty/nginx/logs/nginx.pid"
  nginx error log file: "/usr/local/openresty/nginx/logs/error.log"
  nginx http access log file: "/usr/local/openresty/nginx/logs/access.log"
  nginx http client request body temporary files: "client_body_temp"
  nginx http proxy temporary files: "proxy_temp"
  nginx http fastcgi temporary files: "fastcgi_temp"
  nginx http uwsgi temporary files: "uwsgi_temp"
  nginx http scgi temporary files: "scgi_temp"