CentOS7.x Flask+uWSGI+nginx+MySQL 环境折腾记~~

实验机采用CentOS-7-x86_64-Minimal-1511版安装

1.关闭selinux

nano /etc/selinux/config
将SELINUX=enforcing改为SELINUX=disabled

2.安装netstat工具 - 不然没得ifconfig之类的命令~
yum instatll net-tools –y  

3.安装pip
此处有坑~
No package python-pip available.
Error: Nothing to do
坑就不说了，直说能安装的步骤
[root@localhost www]# yum -y install epel-release  #先执行这个~
[root@localhost www]# yum -y install python-pip    #再安装就顺利了！！



// 假设项目路径 www/my_flask

4.安装VirtualEnv虚拟机
[root@localhost www]# pip install virtualenv

[root@localhost my_flask]# virtualenv venv
>> New python executable in venv/bin/python
>> Installing setuptools, pip...done.

[root@localhost my_flask]# source venv/bin/activate   #进入venv虚拟机

(venv) [root@localhost my_flask]#

以下前缀为(venv)都表示在venv虚拟机操作

5.安装flask
(venv) [root@localhost my_flask]# pip install flask

5.1测试一下flask
(venv) [root@localhost my_flask]# touch test.py

from flask import Flask
 
app = Flask(__name__)
 
@app.route("/")
def hello():
    return "Hello PiaoYun!"
if __name__ == '__main__':
        app.run(debug=True)

        
// 显示如下则falsk环境ok了~
(venv) [root@localhost my_flask]# python ./test.py
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger pin code: 548-063-937

 
6.安装uWSGI
(venv) [root@localhost my_flask]# pip install uwsgi

6.1配置uWSGI

(venv) [root@localhost my_flask]# touch uwsgi_config.xml

 <uwsgi>
     <pythonpath>/www/my_flask/</pythonpath>
     <module>main</module>
     <callable>app</callable>
     <socket>127.0.0.1:9090</socket>
     <master/>
     <processes>4</processes>
     <memory-report/>
</uwsgi>

7.安装nginx

sudo rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
yum install nginx

centos7中是用yum 安装nginx,在/etc/init.d 是没有它相关的文件的
sudo systemctl enable nginx   // 开机自动启动
sudo systemctl start nginx

[root@localhost www]# cd /etc/nginx/conf.d
[root@localhost conf.d]# touch flask.conf  //增加一个配置文件

server
{
    listen 8888;
    server_name localhost;
 
    root /www/my_flask;
    location / {
        include uwsgi_params;
        uwsgi_pass 127.0.0.1:9090;
    }
 
    #error_page 500 502 503 504 /50x.html;
    #location = /50x.html {
    #    root html;
    #}
}

[root@localhost conf.d]# service nginx restart //重启一下nginx

这时回到虚拟机环境执行：
(venv) [root@localhost my_flask]# uwsgi -x uwsgi_config.xml


浏览器打开  能看到 Hello PiaoYun! 则正常了！！


8.安装supervisor

yum install supervisor  #如果这个安装不上，看下面~~

systemctl enable supervisord   // 开机自动启动

这个步骤卡了我很久的时间，具体操作看这里：
http://stackoverflow.com/questions/31157928/supervisord-on-linux-centos-7-only-works-when-run-with-root

9.安装mysql

http://www.ahlinux.com/centos/23340.html


参考文章：
http://www.tuicool.com/articles/zUvqMr



如果你发现掉坑里了不要慌，先依赖包安装以下试试：
yum update

yum install python python-devel libxml2 libxml2-devel python-setuptools zlib-devel wget openssl-devel pcre pcre-devel sudo gcc make autoconf automaker
yum groupinstall "Development tools”

yum install gcc