使用nginx和uwsgi部署flask应用

安装python3

1. 安装编译python的信赖包

   yum install -y gcc make libffi-devel zlib-devel bzip2-devel openssl-devel xz-libs wget
   

2. 编译安装python的最新版本

   • 从官网下载最新的源代码并解压缩

     wget https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tar.xz
     tar -xvf Python-3.7.3.tar.xz
     

   • 编译安装

     cd Python-3.7.3
     #安装到/usr/local下与自带的python区分开
     ./configure --prefix=/usr/local
     make && make install
     

   • 设置PATH，更改默认python

     export PATH="/usr/local/bin:$PATH"
     

安装使用uwsgi

为了统一管理，在python的虚拟环境下安装使用uwsgi,不使用全局的uwsgi

mkdir -p /var/www/flask_api
cd /var/www/flask_api
python -m venv venv
source venv/bin/activate
pip install flask uwsgi

接下来可以用uWSGI来跑Flask应用

uwsgi --http 0.0.0.0:8080 --home env --wsgi-file flask_uwsgi.py --callable app --master

测试上面的程序是否成功

curl http://127.0.0.1:8080

编译安装nginx

1. 安装信赖包

   yum install pcre-devel gcc make zlib-devel lua-devel perl
   

2. 下载最新版本的openssl和nginx源代码

   wget https://www.openssl.org/source/openssl-1.1.1b.tar.gz
   wget https://nginx.org/download/nginx-1.14.2.tar.gz
   

3. 编译安装

   tar -xvf openssl-1.1.1b.tar.gz
   tar -xvf nginx-1.14.2.tar.gz
   cd nginx-1.14.2
   ./configure  --prefix=/usr/local/nginx --with-stream --with-stream_ssl_preread_module  --with-http_v2_module --with-http_ssl_module  --with-pcre  --with-openssl=../openssl-1.1.1b --with-openssl-opt='enable-tls1_3'
   make -j 4
   make install
   

4. 添加systemctl配置, 添加 /usr/lib/systemd/system/nginx.service,并将下面内容写入

   [Unit]
   Description=The NGINX HTTP and reverse proxy server
   After=syslog.target network.target remote-fs.target nss-lookup.target
   
   [Service]
   Type=forking
   PIDFile=/usr/local/nginx/logs/nginx.pid
   ExecStartPre=/usr/local/nginx/sbin/nginx -t
   ExecStart=/usr/local/nginx/sbin/nginx
   ExecReload=/bin/kill -s HUP $MAINPID
   ExecStop=/bin/kill -s QUIT $MAINPID
   PrivateTmp=true
   
   [Install]
   WantedBy=multi-user.target
   

5. 修改nginx配置, 先使用useradd nginx添加nginx用户, 再将下面内容覆盖/usr/local/nginx/conf/nginx.conf, 最后在/usr/local/nginx/conf下面添加vhosts文件夹，最后所有域名的配置都可以放到这个目录下面。

   user  nginx;
   worker_processes  8;
   
   events {
   	worker_connections  1024;
   }
   
   
   http {
   	include       mime.types;
   	default_type  application/octet-stream;
   
   	log_format  main  '$remote_addr - $request_time [$time_local] "$request" '
   					  '$status $body_bytes_sent $bytes_sent $content_length $request_length "$http_referer" '
   					  '"$http_user_agent" "$http_x_forwarded_for"';
   
   	access_log  logs/access.log  main;
   
   	sendfile        on;
   	#tcp_nopush     on;
   
   	#keepalive_timeout  0;
   	keepalive_timeout  65;
   
   	#gzip  on;
   	include vhosts/*.conf;
   }

参考

1. 发一个 Fedora23 上自动搭建、配置 Flask 的 shell 脚本
2. Installing Python 2.7.8 on CentOS 6.5
3. mking/flask-uwsgi
4. How To Deploy Flask Web Applications Using uWSGI Behind Nginx on CentOS 6.4
5. 使用uwsgi和Nginx部署flask应用
6. 阿里云部署 Flask + WSGI + Nginx 详解
7. audit2why
8. SELinux policy for nginx and GitLab unix socket in Fedora 19
9. nginx install官网