[服务器部署] Flask + virtualenv + uWSGI + Nginx 遇到的问题

1.配置好了Flask + virtualenv +uWSGI，启动uWSGI并调试，网页显示 Internal Server Error

参考：https://www.cnblogs.com/cleven/p/10911099.html

【uwsgi.ini】

[uwsgi]
http=0.0.0.0:8080
pythonpath = /home/ubuntu/myprojects/myflask
wsgi-file=mytest.py #问题出在这里：这里需要绝对路径。。。
callable=app
processes=4
threads=2
master=True
logto=log.txt

【解决方案】

wsgi-file = /home/ubuntu/myprojects/myflask/mytest.py

2.已经配置好了文件：flask.conf，网页打开仍然是Nginx的欢迎页面，为什么？

配置文件构成：

/etc/nginx/nginx.conf

  └ /etc/nginx/conf.d/flask.conf

  └ /etc/nginx/sites-enable/default

#####
# nginx.conf
#####
user www-data;
worker_processes auto;
pid /run/nginx.pid;
events {
    worker_connections 768;
    # multi_accept on;
}
http {
    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;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
    ssl_prefer_server_ciphers on;

    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    gzip on;
    gzip_disable "msie6";

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;  #问题出在这里
}

#####
# flask.conf
#####
server {
    listen 80;
    server_name 49.234.18.49;
    root /home/ubuntu/myprojects/myflask;
    location / {
        include uwsgi_params;
        uwsgi_pass localhost:8080;
    }
}

#####
# default
#####
server {
    listen 80 default_server;
    listen [::]:80 default_server;

    root /var/www/html;

    index index.html index.htm index.nginx-debian.html;

    server_name _;

    location / {
        try_files $uri $uri/ =404;
    }

}

【原因】

nginx.conf中include了两个地址，其中 /etc/nginx/sites-enabled/* 占用了80端口，导致flask.conf设置的端口失效。

解决方法就是注释掉这一行：# /etc/nginx/sites-enabled/* ;

3.启动flask的时候出现ImportError: No module named flask

【原因】

新建虚拟环境的时候出错导致的，排查了一晚上，谨记谨记！

注：神tm虚拟环境中sudo pip install 的时候是安装到实际环境中去的！！！

4.网页部署完成，初次访问速度奇慢无比，如何解决？

[思路]

vue router 懒加载

5.客户端登录的时候返回500 (INTERNAL SERVER ERROR)，如何解决？

查看uwsgi的Log如下：

  File "/home/ubuntu/release/myblog_flask_v2/app/models.py", line 104, in get_jwt
    return jwt.encode(
AttributeError: module 'jwt' has no attribute 'encode'

 【原因】

包装错了啊

错误包：jwt

正确包：pyjwt

emmmm....