uWSGI的各种部署方式

As a back-end with web-server, speak the uwsgi protocol

<uwsgi id = "uwsgibk">
    <stats>127.0.0.1:9090</stats>
    <socket>127.0.0.1:3030</socket>
    <file>./server.py</file>
    <enable-threads/>
    <post-buffering/>
    <memory-report/>
</uwsgi>

As a back-end with web-server, speak the http protocol

The http and http-socket options are entirely different beasts. The first one spawns an additional process forwarding requests to a series of workers (think about it as a form of shield, at the same level of apache or nginx), while the second one sets workers to natively speak the http protocol. TL/DR: if you plan to expose uWSGI directly to the public, use –http, if you want to proxy it behind a webserver speaking http with backends, use –http-socket. .. seealso:: Native HTTP support

<uwsgi id = "httpbk">
    <stats>127.0.0.1:9090</stats>
    <http-socket>127.0.0.1:3030</http-socket>
    <file>./server.py</file>
    <enable-threads/>
    <post-buffering/>
    <memory-report/>
</uwsgi>

Expose self directly to the public

<uwsgi id = "http">
    <stats>127.0.0.1:9090</stats>
    <http>:80</http>
    <file>./server.py</file>
    <enable-threads/>
    <post-buffering/>
    <memory-report/>
</uwsgi>

Nginx with The uWSGI FastRouter

http://uwsgi-docs.readthedocs.org/en/latest/Nginx.html
http://uwsgi-docs.readthedocs.org/en/latest/Fastrouter.html
http://stackoverflow.com/questions/21518533/putting-a-uwsgi-fast-router-in-front-of-uwsgi-servers-running-in-docker-containe
http://stackoverflow.com/questions/26499644/how-to-use-the-uwsgi-fastrouter-whith-nginx

Configurations of Nginx

location /test {
        include    uwsgi_params;
        uwsgi_pass 127.0.0.1:3030;
    }

Configurations of FastRouter

<uwsgi id = "fastrouter">
    <fastrouter>127.0.0.1:3030</fastrouter>
    <fastrouter-subscription-server>127.0.0.1:3131</fastrouter-subscription-server>
    <enable-threads/>
    <master/>
    <fastrouter-stats>127.0.0.1:9595</fastrouter-stats>
</uwsgi>

Configurations of instance

<uwsgi id = "subserver1">
    <stats>127.0.0.1:9393</stats>
    <processes>4</processes>
    <enable-threads/>
    <memory-report/>
    <subscribe-to>127.0.0.1:3131:[server_ip] or [domain]</subscribe-to>
    <socket>127.0.0.1:3232</socket>
    <file>./server.py</file>
    <master/>
    <weight>8</weight>
</uwsgi>

<uwsgi id = "subserver2">
    <stats>127.0.0.1:9494</stats>
    <processes>4</processes>
    <enable-threads/>
    <memory-report/>
    <subscribe-to>127.0.0.1:3131:[server_ip] or [domain]</subscribe-to>
    <socket>127.0.0.1:3333</socket>
    <file>./server.py</file>
    <master/>
    <weight>2</weight>
</uwsgi>

If we HTTP-GET [server_ip] or [domain]/test, the route of request as follows:
Nginx >> FastRouter(port 3030) >> FastRouter(port 3131) >> subserver1(port 3232) or subserver2(port 3333)
and the protocol of all is uwsgi.

Faster Router also has specific stats.

http router

http://uwsgi-docs.readthedocs.org/en/latest/HTTP.html
Router

<uwsgi id = "httprouter">
    <enable-threads/>
    <master/>
    <http>:8080</http>
    <http-stats>127.0.0.1:9090</http-stats>
    <http-to>127.0.0.1:8181</http-to>
    <http-to>127.0.0.1:8282</http-to>
</uwsgi>

sub-server1

<uwsgi id = "httpserver1">
    <stats>127.0.0.1:9191</stats>
    <socket>127.0.0.1:8181</socket>
    <memory-report/>
    <file>./server.py</file>
    <enable-threads/>
    <post-buffering/>
</uwsgi>

sub-server2

<uwsgi id = "httpserver2">
    <stats>127.0.0.1:9292</stats>
    <memory-report/>
    <file>./server.py</file>
    <socket>127.0.0.1:8282</socket>
    <enable-threads/>
    <post-buffering/>
</uwsgi>

Other route mode

Just like Fast Route and Http Route, the router can forward(http-to) or route requests to other sub-servers, the only difference is protocol.
The protocols as follows:
Fast, HTTP(S), raw, ssl.
Certainly, all of routers have specific stats in the same style.

The uWSGI Emperor

http://uwsgi-docs.readthedocs.org/en/latest/Emperor.html
Emperor

<uwsgi id = "emperor">
    <emperor>./vassals</emperor>
    <emperor-stats-server>127.0.0.1:9090</emperor-stats-server>
</uwsgi>

Vassal1

<vassal1>
    <uwsgi id = "vassal1">
        <http>:8080</http>
        <stats>127.0.0.1:9191</stats>
        <memory-report/>
        <enable-threads/>
        <post-buffering/>
        <file>./server.py</file>
        <chdir>..</chdir>
    </uwsgi>
</vassal1>

Vassal2

<vassal2>
    <uwsgi id = "vassal2">
        <http>:8181</http>
        <stats>127.0.0.1:9292</stats>
        <memory-report/>
        <enable-threads/>
        <post-buffering/>
        <file>./server.py</file>
        <chdir>..</chdir>
    </uwsgi>
</vassal2>

Emperor also has specific stats.

multi-mountpoint

<uwsgi id = "vassal1">
    <socket>127.0.0.1:3030</socket>
    <http>:8080</http>
    <stats>127.0.0.1:9191</stats>
    <memory-report/>
    <enable-threads/>
    <post-buffering/>
    <manage-script-name/>
    <chdir>..</chdir>
    <mount>/pic=server.py</mount>
    <mount>/test=fuck.py</mount>
    <workers>2</workers>
</uwsgi>

注意：

http://stackoverflow.com/questions/19475651/how-to-mount-django-app-with-uwsgi

<manage-script-name/>参数很关键，但官方help中并没有提这个，F*CK YOU！

这样配置后，uWSGI会根据不同的request路径调用不同的app。

The End

uWSGI作为backend，和Nginx的配合比Apache要好，建议用Nginx作前端。

如果在CentOS上以INET socket为载体部署Nginx+uWSGI或Apache+uWSGI时，客户端访问遇到50x Bad Gateway错误时，强烈建议你换到Ubuntu上去试试，因为同样的配置在CentOS上有这个问题，换到Ubuntu后就可能没问题。

2014-11-03补充：CentOS下的这个问题的原因是RedHat系列的Linux发行版默认开启SELinux，SELinux的某些策略导致的这个问题，不知道算不算是BUG。关闭了SELinux就可解决，具体如何关闭可以参考：http://www.cnblogs.com/lightnear/archive/2012/10/06/2713090.html。Debian系列的发行版因为默认没有开启SELinux，所以不存在这个问题。上周末看到一篇比较Liunx发行版性能的文章时，偶然发现的有SELinux这个东西，今天一试果然。如果再碰到其他类似的诡异问题，也可以尝试关闭SELinux试试。

如果用Apache+uWSGI部署后，客户端访问时返回一个文件，那有可能是Apache对页面压缩后的结果，把Apache的GZIP压缩模块关掉就好了。Nginx没有这个问题，更好用不是吗？

忍不住吐槽

尼玛uWSGI的文档就是一坨SHIT，SHIT！国内这方面的知识可能少很多，在这里贴出来，方便国内的用户。

像这种小众一点的东西，国内资料很少，跟国外比还是有差距啊，基友们还需努力啊。