在生产环境（linux）下部署flask

原创已于 2022-06-06 15:16:34 修改 · 607 阅读

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#nginx #flask #运维

于 2022-05-28 16:13:26 首次发布

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本文介绍如何使用gunicorn和nginx部署Flask应用，并通过supervisor进行进程管理，确保服务稳定运行。涉及配置文件详解及命令操作。

安装

sudo apt-get install supervisor 
sudo apt install nginx
pip install gunicorn

配置文件及注解

sudo vim /etc/nginx/sites-available/default
# nginx 默认配置文件
cat /etc/nginx/nginx.conf
# nginx 的用户配置文件，相比默认配置文件优先级高
cat /etc/supervisor/conf.d/gunicorn.conf
# supervisor 管理gunicorn进程的配置文件，要自己创建
cat /etc/supervisor/conf.d/nginx.conf
# supervisor 管理nginx进程的配置文件，要自己创建

反向代理配置nginx的默认配置

listen 8080 是公网暴露的端口
proxy_pass http://localhost:8000是内网服务器接口的地址，这里是服务器本地

server {

        listen 8080 default_server;
        listen [::]:8080 default_server;
        server_name xjfd;
        # SSL configuration
        #
        # listen 443 ssl default_server;
        # listen [::]:443 ssl default_server;
        #
        # Note: You should disable gzip for SSL traffic.
        # See: https://bugs.debian.org/773332
        #
        # Read up on ssl_ciphers to ensure a secure configuration.
        # See: https://bugs.debian.org/765782
        #
        # Self signed certs generated by the ssl-cert package
        # Don't use them in a production server!
        #
        # include snippets/snakeoil.conf;

        root /var/www/html;

        # Add index.php to the list if you are using PHP
        index index.html index.htm index.nginx-debian.html;


        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                proxy_pass http://localhost:8000;

                proxy_set_header Host $host;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        }
}

/etc/supervisor/conf.d/gunicorn.conf配置文件

手动创建
/home/xjfd/.conda/envs/cp37/bin/gunicorn命令路径
/home/xjfd/server/server_all项目文件夹
user=xjfd用户名

[program:gunicorn]
command=/home/xjfd/.conda/envs/cp37/bin/gunicorn -w 2 -b :8000 server:app -D
directory=/home/xjfd/server/server_all
autostart=true
autorestart=true
user=xjfd
redirect_stderr=true

/etc/supervisor/conf.d/nginx.conf配置文件

手动创建
/usr/sbin/nginx -g 'daemon on;' 守护线程
以root权限启动nginx

[program:nginx]
command=/usr/sbin/nginx -g 'daemon on;'
autostart=true
autorestart=true
user=root
redirect_stderr=true

重启or启动

sudo  /etc/init.d/nginx restart
# 启动nginx 
sudo  /etc/init.d/supervisor restart
# 启动supervisor

测试

cd /home/njit/wind/test/server_all
# 此路径是服务器文件路径

find / -name gunicorn 2>/dev/null
# 用这条命令来查找 /home/user/virtualenvs/py37/bin/gunicorn是查找结果

/home/user/virtualenvs/py37/bin/gunicorn -w 2 -b :8080 server:app -D 
# server是文件名
# -w 是线程数 -b是端口号 -D 是守护线程
# gunicorn 路径是需要查找本机的路径的


curl -X POST 127.0.0.1:8000
curl --request POST --url http://127.0.0.1:8000/rest/wt/v2/tilt
# 测试 使用curl命令，没有的需要安装，具体去查一下吧，此处不详解

日志文件

tail /var/log/nginx/error.log
# nginx 报错日志文件
tail /var/log/nginx/access.log
# nginx 访问日志文件

关闭服务

sudo  /etc/init.d/supervisor stop
sudo  /etc/init.d/nginx stop
sudo pkill nginx
sudo pkill gunicorn