Centos+python3+nginx+uwsgi+flask

发表于 2017-11-19 更新于 2020-02-27 阅读次数：

1、下载Python3

 wget https://www.python.org/ftp/python/3.6.3/Python-3.6.3.tgz

2、安装openssl

$ yum install openssl -y (-y 是遇到选择yes/no的时候默认提前yes了)
$ yum install openssl-devel -y

3、解压Python3

$ tar -zxf Python-3.6.3.tgz
$ cd Python-3.6.3

4、编译Python

$ ./configure
$ make & make install

5、安装虚拟环境

$ pip3 install virtualenv
$ virtualenv --no-site-packages -p python3 **_env (不关联系统库，使用python3)

$ source **_env/bin/activate(激活)
$ deactivate (退出虚拟环境)

6、安装nginx

$ yum install nginx
$ service nginx start

6.1、谁占用了80端口？kill掉

$ netstat -tln | grep 80
$ kill -9 'id'

7、安装uwsgi

$ pip install uwsgi

8、配置nginx与uwsgi之间

$ vim /etc/nginx/nginx.conf
    server {
        listen 80;
        server_name localhost;
        charset utf-8;
        client_max_body_size 75M;
        location / {
            include uwsgi_params;
            uwsgi_pass 127.0.0.1:8000;
            uwsgi_param UWSGI_PYHOME /var/www/leefeng_env;
            uwsgi_param UWSGI_CHDIR /var/www/leefeng;
            uwsgi_param UWSGI_SCRIPT core:app;
        }
    }
$ vim /var/www/leefeng/uwsgi.ini
    [uwsgi]
    socket = 127.0.0.1:8000
    plugins = python
    chidir = /var/www/leefeng
    virtualenv = /var/www/leefeng_env
    wsgi-file = core.py
    callable = app

    threads = 2
    processes = 4

9、编写代码

$ pip install flask
$ vim /var/www/leefeng/core.py
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from flask import Flask
app=Flask(__name__)

@app.route('/')
def index():
return '<h2>Hello Word!</h2>'

if __name__ == '__main__':
app.run()

10、开启

$ uwsgi uwsgi.ini
$ nohup uwsgi uwsgi.ini & (断开终端依旧运行)
$ ps -ef|grep uwsgi (查询正在运行的uwsgi的进程，然后kill -9 id 后退出uwsgi)

错误解决

make时报错zipimport.ZipImportError: can't decompress data; zlib not available：#yum install zlib-devel
启动nginx报错：nginx: [emerg] socket() [::]:80 failed=需要在nginx.conf 注释掉#listen       [::]:80 default_server;
pip报错：ssl module in Python is not available=（需要重新python :./configure make & make install ）
yum install openssl -y (-y 是遇到选择yes/no的时候默认提前yes了)
yum install openssl-devel -y
安装python错误：Prior to installing Python in CentOS 7, let’s make sure our system has all the necessary development dependencies:

# yum -y groupinstall development
# yum -y install zlib-devel


1.查看数据库编码格式
mysql> show variables like 'character_set_database';
2.查看数据表的编码格式
mysql> show create table <表名>;
5.修改数据库的编码格式
mysql>alter database <数据库名> character set utf8;
6.修改数据表格编码格式
mysql>alter table <表名> character set utf8;