使用Gunicorn和nginx進行Flask服務部署

Gunicorn  ‘Green Unicorn’ 是一個 UNIX 下的 WSGI HTTP 服務器

在 Gunicorn 上運行 Flask 應用

修改下面myproject爲自己的服務文件名即可

$ gunicorn myproject:app

使用如下命令即可啓動多個應用實例：

$ gunicorn -w 4 -b 127.0.0.1:4000 myproject:app  

輸出如下內容代表服務創建成功：

[2020-02-11 14:50:24 +0800] [892] [INFO] Starting gunicorn 20.0.4
[2020-02-11 14:50:24 +0800] [892] [INFO] Listening at: http://0.0.0.0:5555 (892)
[2020-02-11 14:50:24 +0800] [892] [INFO] Using worker: sync
[2020-02-11 14:50:24 +0800] [895] [INFO] Booting worker with pid: 895
[2020-02-11 14:50:24 +0800] [896] [INFO] Booting worker with pid: 896
[2020-02-11 14:50:24 +0800] [898] [INFO] Booting worker with pid: 898
[2020-02-11 14:50:24 +0800] [899] [INFO] Booting worker with pid: 899

 

使用Nginx進行負載均衡

修改配置文件：修改服務端口的url即可

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 {
    server
    {
        listen 5556; # nginx端口
        server_name localhost;
        location / {
            proxy_pass http://localhost:5555/run; # 服務端口的url
        }
    }
}

從配置文件啓動： 

sudo nginx -c nginx.conf