使用Virtualenv、Circus和Chaussette部署Django

Question

我正在尝试在CentOS 7上使用Virtualenv、Circus和Chaussette来运行Django，并且是在一个虚拟主机里。但是每次我运行circusd circus.ini时，总是会出现这个错误：

(djenv)[root@localhost django]# circusd circus.ini
2014-09-01 22:06:38 circus[2406] [INFO] Starting master on pid 2406
2014-09-01 22:06:38 circus[2406] [INFO] sockets started
2014-09-01 22:06:38 circus[2406] [WARNING] error in 'settings': [Errno 2] No such file or directory: '~/.virtualenv/djenv/bin/chaussette'
2014-09-01 22:06:38 circus[2406] [WARNING] error in 'settings': [Errno 2] No such file or directory: '~/.virtualenv/djenv/bin/chaussette'
2014-09-01 22:06:38 circus[2406] [WARNING] error in 'settings': [Errno 2] No such file or directory: '~/.virtualenv/djenv/bin/chaussette'
2014-09-01 22:06:38 circus[2406] [WARNING] error in 'settings': [Errno 2] No such file or directory: '~/.virtualenv/djenv/bin/chaussette'
2014-09-01 22:06:38 circus[2406] [WARNING] error in 'settings': [Errno 2] No such file or directory: '~/.virtualenv/djenv/bin/chaussette'
2014-09-01 22:06:38 circus[2406] [INFO] settings stopped
2014-09-01 22:06:38 circus[2406] [INFO] Arbiter now waiting for commands
2014-09-01 22:06:38 circus[2406] [INFO] circusd-stats started
2014-09-01 22:06:38 circus[2415] [INFO] Starting the stats streamer

# Here i close circusd with ctrl+c

2014-09-01 22:19:40 circus[2406] [INFO] Got signal SIG_INT
2014-09-01 22:19:40 circus[2406] [INFO] Arbiter exiting
2014-09-01 22:19:41 circus[2406] [INFO] circusd-stats stopped
Exception ignored in: <module 'threading' from '/usr/local/lib/python3.4/threading.py'>
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/threading.py", line 1294, in _shutdown
    t.join()
  File "/usr/local/lib/python3.4/threading.py", line 1057, in join
    raise RuntimeError("cannot join current thread")
RuntimeError: cannot join current thread

我的Django项目的路径是/opt/webapps/django/。这个路径的结构是：

（顺便提一下：settings是我给我的Django项目起的名字）

/django/
/django/manage.py
/django/circus.ini
/django/settings/
/django/settings/urls.py
/django/settings/wsgi.py
/django/settings/settings.py

我的虚拟环境的路径是：~/.virtualenv/djenv/。这个路径的结构（bin）是：

/djenv/
/djenv/bin/
/djenv/bin/circusd
/djenv/bin/chaussette
/djenv/bin/circushttpd
/djenv/bin/python3.4
/djenv/bin/pip

我的circus.ini文件的内容是：

[circus]
endpoint = tcp://127.0.0.1:5555
pubsub_endpoint = tcp://127.0.0.1:5556
stats_endpoint = tcp://127.0.0.1:5557

[watcher:settings]
cmd = ~/.virtualenv/djenv/bin/chaussette django:/opt/webapps/django --fd $(circus.sockets.settings)$ --django-settings settings.settings
use_sockets = True
numprocesses = 3

[socket:settings]
host = 0.0.0.0
port = 8080

Answer 1

这个回复虽然有点晚，但也许对其他人会有帮助。我现在在用python3.4和django1.9。

这是我的 /etc/circus/circusd.ini 文件内容：

[circus]
check_delay = 5
include_dir = /etc/circus/conf.d
logoutput = /var/log/circus/system.log
statsd = True

[plugin:flapping]
use = circus.plugins.flapping.Flapping

还有我的项目的 /etc/circus/conf.d/project.ini 文件内容：

[project_name]
cmd = chaussette project_name.wsgi.application --backend waitress --fd $(circus.sockets.project_name)
use_sockets = True
virtualenv = /path/to/env  # if you are using virtualenv
working_dir = /path/to/project
copy_env = True

stdout_stream.class = FileStream
stdout_stream.filename = /path/to/logs/stdout.log
stdout_stream.refresh_time = 0.3

stderr_stream.class = FileStream
stderr_stream.filename = /path/to/logs/error.log
stderr_stream.refresh_time = 0.3

[project_name]
PYTHONPATH  = /path/to/project

[socket:project_name]
host = localhost
port = 8000

要注意 /path/to/logs/ 和 /var/log/circus/system.log 的权限设置。这些目录必须存在。

Answer 2

我终于找到了解决办法。下面是我所做的。

首先，我把我的 circus.ini 文件改成了这样：

[circus]
endpoint = tcp://127.0.0.1:5555
pubsub_endpoint = tcp://127.0.0.1:5556
stats_endpoint = tcp://127.0.0.1:5557

[watcher:settings]
cmd = /root/.virtualenvs/djenv/bin/chaussette settings.wsgi.application
args = --fd $(circus.sockets.settings)
use_sockets = True
numprocesses = 3
copy_env = True
virtualenv = /root/.virtualenvs/djenv/

[socket:settings]
host = 0.0.0.0
port = 8080

因为我在使用 Python 3.4.1 运行这个 circus，所以遇到了另一个错误：

OSError: [Errno 9] Bad file descriptor

在寻找这个问题的解决方案时，我发现了这个修复方法 https://github.com/mozilla-services/circus/pull/800/files

希望这能帮助到其他人。