centso上边部署flask项目 ngnix+uwsgi

本文主要是介绍centso上边部署flask项目 ngnix+uwsgi，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

 项目根目录：/home/rs/myproject
---|app
----------|__init__.py
----------|views.py
---|logs
---|myenv
---|run.py
---|uwsgi.ini
 

一、安装uwsgi

pip install uwsgi

二、添加uwsgi配置文件

在根目录下添加uwsgi.ini，内容如下：

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[uwsgi]  
socket = 127.0.0.1:8001  
pythonpath = /home/rs/myproject  
module = run  
callable = app  
processes = 4  
threads = 2  

各参数介绍：
socket：通讯端口，外界可以通过127.0.0.1:8001访问，相当于我们在本地运行flask，并通过127.0.0.1:5000访问；并负责与nginx通信。
pythonpath：项目目录。
module：启动文件的文件名，我们可以在本地用python run.py启动flask项目。
callable：程序内启用的application变量名。
processes：处理器个数。
threads：线程数。
注意：最好不要在配置文件写中文注释，别问我为什么。

三、启动uwsgi

uwsgi uwsgi.ini

四、安装nginx

yum install nginx

五、修改nginx配置文件
配置文件的路径不尽相同，我的在/etc/nginx/nginx.conf。
修改如下（只修改标红部分即可）：

# For more information on configuration, see:
# * Official English Documentation: http://nginx.org/en/docs/
# * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
worker_connections 1024;
}

http {
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

access_log /var/log/nginx/access.log main;

sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;

include /etc/nginx/mime.types;
default_type application/octet-stream;

# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;

server {
listen 80 default_server;
listen [::]:80 default_server;
server_name 服务器公网ip;
root /usr/share/nginx/html;
#root /var/www/html;

# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;

location / {
include uwsgi_params;
uwsgi_pass 127.0.0.1:8001;
uwsgi_param UWSGI_PYHOME /home/rs/myproject/myenv;
uwsgi_param UWSGI_CHDIR /home/rs/myproject;
uwsgi_param UWSGI_SCRIPT run:app;
}

error_page 404 /404.html;
location = /40x.html {
}

error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}

# Settings for a TLS enabled server.
#
# server {
# listen 443 ssl http2 default_server;
# listen [::]:443 ssl http2 default_server;
# server_name _;
# root /usr/share/nginx/html;
#
# ssl_certificate "/etc/pki/nginx/server.crt";
# ssl_certificate_key "/etc/pki/nginx/private/server.key";
# ssl_session_cache shared:SSL:1m;
# ssl_session_timeout 10m;
# ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;
#
# # Load configuration files for the default server block.
# include /etc/nginx/default.d/*.conf;
#
# location / {
# }
#
# error_page 404 /404.html;
# location = /40x.html {
# }
#
# error_page 500 502 503 504 /50x.html;
# location = /50x.html {
# }
# }

}

六、启动nginx

执行nginx命令。启动后，在浏览器输入http://ip即可查看部署是否成功。

附：
流程（原理）：web请求--->nginx代理--->uwsgi代理--->python项目

uwsgi启动：
uwsgi XX.ini
uwsgi停止：
sudo killall -9 uwsgi

nginx启动：
nginx
nginx停止：
nginx -s stop