Question

我正准备将nginx / uwsgi与烧瓶一起用于我正在开发的网站，但我遇到了问题。注意，使用flask的debug：5000端口，网站本身运行良好，但我想现在投入生产。解释我做了什么。

这是一个linode ubuntu 12.04LTS服务器，我这样安装：

# install nginx
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:nginx/stable
sudo apt-get update
sudo apt-get upgrade --show-upgraded
sudo apt-get install nginx-full
# installing uwsgi
sudo apt-get install build-essential python-dev libxml2-dev
sudo apt-get install libc6 libexpat1 libgd2-xpm libgeoip1 libpam0g libpcre3 libssl1.0.0 libxml2 libxslt1.1 zlib1g 
sudo pip install uwsgi
# python basics
sudo apt-get install python-pip build-essential python-dev
sudo pip install virtualenv
sudo pip install virtualenvwrapper
sudo mkdir -p /srv/www/li/
cd /srv/www/li/
virtualenv venv
source /srv/www/li/venv/bin/activate
pip install flask

然后我开始配置所有内容，但我已经遇到了uwsgi的问题（更别提NGINX了，这将是下一步。

sudo nano /etc/uwsgi/apps-available/li.xml

    <uwsgi> 
    <plugin>python</plugin> 
    <socket>/run/uwsgi/app/li.socket</socket>
    <chmod-socket>666</chmod-socket>
    <chdir>/srv/www/li</chdir>
    <pythonpath>/srv/www/li</pythonpath>
    <virtualenv>/srv/www/li/venv</virtualenv>
    <module>li</module>
    <wsgi-file>/srv/www/li/li.py</wsgi-file>
    <callable>app</callable> 
    <master/> 
    <processes>4</processes> 
    <harakiri>60</harakiri> 
    <reload-mercy>8</reload-mercy> 
    <cpu-affinity>1</cpu-affinity> 
    <stats>/tmp/stats.socket</stats> 
    <max-requests>2000</max-requests> 
    <limit-as>512</limit-as> 
    <reload-on-as>256</reload-on-as> 
    <reload-on-rss>192</reload-on-rss> 
    <no-orphans/> 
    <vacuum/> 
</uwsgi>

sudo ln -s /etc/uwsgi/apps-available/li.xml /etc/uwsgi/apps-enabled/li.xml

但是，如果我运行它，我得到：

uwsgi --xml /etc/uwsgi/apps-enabled/li.xml

[uWSGI] parsing config file /etc/uwsgi/apps-enabled/li.xml
open("./python_plugin.so"): No such file or directory [core/utils.c line 4755]
!!! UNABLE to load uWSGI plugin: ./python_plugin.so: cannot open shared object file: No such file or directory !!!
*** Starting uWSGI 1.4.6 (64bit) on [Thu Feb 28 16:30:53 2013] ***
compiled with version: 4.6.3 on 28 February 2013 12:38:22
os: Linux-3.7.10-x86_64-linode30 #1 SMP Wed Feb 27 14:29:31 EST 2013
nodename: demo
machine: x86_64
clock source: unix
detected number of CPU cores: 4
current working directory: /run/uwsgi/app
detected binary path: /usr/local/bin/uwsgi
your processes number limit is 63594
limiting address space of processes...
your process address space limit is 536870912 bytes (512 MB)
your memory page size is 4096 bytes
 *** WARNING: you have enabled harakiri without post buffering. Slow upload could be rejected on post-unbuffered webservers *** 
detected max file descriptor number: 1024
lock engine: pthread robust mutexes
uwsgi socket 0 bound to UNIX address /run/uwsgi/app/li.socket fd 3
Python version: 2.7.3 (default, Aug  1 2012, 05:25:23)  [GCC 4.6.3]
Set PythonHome to /srv/www/li/venv
*** Python threads support is disabled. You can enable it with --enable-threads ***
Python main interpreter initialized at 0xa86e20
your server socket listen backlog is limited to 100 connections
mapped 362120 bytes (353 KB) for 4 cores
*** Operational MODE: preforking ***
added /srv/www/li/ to pythonpath.
/srv/www/li/venv/local/lib/python2.7/site-packages/mongoengine/fields.py:744: FutureWarning: ReferenceFields will default to using ObjectId  strings in 0.8, set DBRef=True if this isn't desired
  warnings.warn(msg, FutureWarning)
WSGI app 0 (mountpoint='') ready in 1 seconds on interpreter 0xa86e20 pid: 14934 (default app)
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 14934)
spawned uWSGI worker 1 (pid: 14940, cores: 1)
mapping worker 1 to CPUs: 0
spawned uWSGI worker 2 (pid: 14941, cores: 1)
mapping worker 2 to CPUs: 1
spawned uWSGI worker 3 (pid: 14942, cores: 1)
mapping worker 3 to CPUs: 2
spawned uWSGI worker 4 (pid: 14943, cores: 1)
unlink(): Operation not permitted [core/socket.c line 109]
bind(): Address already in use [core/socket.c line 141]
...brutally killing workers...
mapping worker 4 to CPUs: 3
VACUUM: unix socket /run/uwsgi/app/li.socket removed.

所以我得到了不允许的unlink操作，并且绑定地址已经在使用错误（在python_plugin错误旁边，我也不知道如何解决这个问题！）。如果我以sudo身份运行，它似乎工作正常 - ＆gt;

sudo uwsgi --xml /etc/uwsgi/apps-enabled/li.xml

[uWSGI] parsing config file /etc/uwsgi/apps-enabled/li.xml
open("./python_plugin.so"): No such file or directory [core/utils.c line 4755]
!!! UNABLE to load uWSGI plugin: ./python_plugin.so: cannot open shared object file: No such file or directory !!!
*** Starting uWSGI 1.4.6 (64bit) on [Thu Feb 28 15:47:41 2013] ***
compiled with version: 4.6.3 on 28 February 2013 12:38:22
os: Linux-3.7.10-x86_64-linode30 #1 SMP Wed Feb 27 14:29:31 EST 2013
nodename: demo
machine: x86_64
clock source: unix
detected number of CPU cores: 4
current working directory: /run/uwsgi
detected binary path: /usr/local/bin/uwsgi
uWSGI running as root, you can use --uid/--gid/--chroot options
*** WARNING: you are running uWSGI as root !!! (use the --uid flag) *** 
your processes number limit is 63594
limiting address space of processes...
your process address space limit is 536870912 bytes (512 MB)
your memory page size is 4096 bytes
 *** WARNING: you have enabled harakiri without post buffering. Slow upload could be rejected on post-unbuffered webservers *** 
detected max file descriptor number: 1024
lock engine: pthread robust mutexes
uwsgi socket 0 bound to UNIX address /run/uwsgi/app/li.socket fd 3
Python version: 2.7.3 (default, Aug  1 2012, 05:25:23)  [GCC 4.6.3]
Set PythonHome to /srv/www/li/venv
*** Python threads support is disabled. You can enable it with --enable-threads ***
Python main interpreter initialized at 0x1fc9d00
your server socket listen backlog is limited to 100 connections
mapped 362120 bytes (353 KB) for 4 cores
*** Operational MODE: preforking ***
added /srv/www/li/ to pythonpath.
/srv/www/li/venv/local/lib/python2.7/site-packages/mongoengine/fields.py:744: FutureWarning: ReferenceFields will default to using ObjectId  strings in 0.8, set DBRef=True if this isn't desired
  warnings.warn(msg, FutureWarning)
WSGI app 0 (mountpoint='') ready in 0 seconds on interpreter 0x1fc9d00 pid: 14755 (default app)
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 14755)
spawned uWSGI worker 1 (pid: 14761, cores: 1)
mapping worker 1 to CPUs: 0
spawned uWSGI worker 2 (pid: 14762, cores: 1)
mapping worker 2 to CPUs: 1
spawned uWSGI worker 3 (pid: 14763, cores: 1)
mapping worker 3 to CPUs: 2
spawned uWSGI worker 4 (pid: 14764, cores: 1)
*** Stats server enabled on /tmp/stats.socket fd: 16 ***
mapping worker 4 to CPUs: 3

任何人都可以帮助我吗？由于www-data在www-data组中并且他运行它，我尝试了一些东西：

sudo usermod -a -G www-data $USER
sudo chown -R $USER:www-data /srv/www/li
sudo chmod -R g+r+w+x /srv/www/li
sudo chown -R $USER:www-data /etc/uwsgi/apps-enabled
sudo chmod -R g+r+w+x /etc/uwsgi/apps-enabled
sudo chown -R $USER:www-data /run/uwsgi/app
sudo chmod -R g+r+w+x /run/uwsgi/app

但这也没有帮助。我也尝试了一个tcp端口，而不是unix / run / uwsgi / app / port，它们没有任何区别...... 这让我抓狂:(我希望有人知道这里发生了什么。

亲切的问候，

岩溶

编辑：服务器重新启动后，它仍然会提供一个错误但不同的错误：

geoadmin@demo:~$ uwsgi --xml /etc/uwsgi/apps-enabled/li.xml
[uWSGI] parsing config file /etc/uwsgi/apps-enabled/li.xml
*** Starting uWSGI 1.4.6 (64bit) on [Thu Feb 28 18:47:36 2013] ***
compiled with version: 4.6.3 on 28 February 2013 12:38:22
os: Linux-3.7.10-x86_64-linode30 #1 SMP Wed Feb 27 14:29:31 EST 2013
nodename: demo
machine: x86_64
clock source: unix
detected number of CPU cores: 4
current working directory: /home/geoadmin
detected binary path: /usr/local/bin/uwsgi
your processes number limit is 63594
limiting address space of processes...
your process address space limit is 536870912 bytes (512 MB)
your memory page size is 4096 bytes
 *** WARNING: you have enabled harakiri without post buffering. Slow upload could be rejected on post-unbuffered webservers *** 
detected max file descriptor number: 1024
lock engine: pthread robust mutexes
bind(): No such file or directory [core/socket.c line 141]

Answer 1

这一直是我在谷歌上的第一个结果，而且这个页面对我来说相对无益，所以我想补充一下我的答案，即使它回顾起来相当明显。

我的问题是我的统计信息套接字的权限问题。如果您更改了uWSGI配置的uid或gid参数，请确保 chmod或rm所有旧套接字/ pid及其父文件夹。

Answer 2

在我的情况下，我试图将.sock文件放在/vagrant目录中，这是一个机器安装的虚拟盒文件夹，并不比读写更好。

将.sock文件放在虚拟框安装点之外，最好放在 ~~/tmp~~ 中FHS说：/var/run

价： https://stackoverflow.com/a/7580524/1695680

Answer 3

好的，在后来的编辑后我检查了目录，并且套接字目录不存在（不再）;我认为它与原来的apt-get安装相比，而不是我后来的pip安装...仍然有python插件的问题，但会检查是否有必要nginx或它是否可以在没有它的情况下工作... 8小时在重置工作，d'Oh;）

@bearrito：最后，我将套接字放在tmp目录中以避免权限问题：

<uwsgi>
        <uid>www-data</uid>
        <gid>www-data</gid> 
    <plugin>python</plugin> 
    <socket>/tmp/li.socket</socket>
    <chmod-socket>666</chmod-socket>
    <chdir>/srv/www/li</chdir>
    <pythonpath>/srv/www/li</pythonpath>
    <virtualenv>/srv/www/li/venv</virtualenv>
    <module>li</module>
    <wsgi-file>/srv/www/li/li.py</wsgi-file>
    <callable>app</callable> 
    <master/> 
    <processes>2</processes> 
    <pidfile>/tmp/li.pid</pidfile> 
    <harakiri>120</harakiri> 
    <reload-mercy>8</reload-mercy> 
    <cpu-affinity>1</cpu-affinity> 
    <stats>/tmp/stats.socket</stats> 
    <max-requests>2000</max-requests> 
    <limit-as>2048</limit-as> 
    <reload-on-as>2048</reload-on-as> 
    <reload-on-rss>1024</reload-on-rss> 
    <no-orphans/> 
    <vacuum/> 
</uwsgi>

我希望这有帮助！

Answer 4

对我来说，解决方法是删除/var/run/uwsgi/.sock和

chmod 775 /var/run/uwsgi
chmod 777 /var/log/uwsgi

或uwsgi文件在哪里。

只能用root运行uwsgi

4 个答案: