配置CentOS7.3+nginx+gunicorn+supervisor+flask 部署flask项目

1.安装必须的几个工具
	yum install python-devel  # 开发版包含python.h头文件
	yum install epel-release  # 安装setputools工具 centos默认没有
	yum install python-setuptools  # 安装setputools工具
	easy_install pip  # 安装强大的pip
	pip install virtualenv  #安装虚拟环境
	pip install supervisor  #安装supervisor

2.在虚拟机中安装flask
	cd /www/shop
	vim shop.py # 一下内容

	from flask import Flask
	app = Flask(__name__)
	@app.route('/')
	def index():
		return 'hello world'
	if __name__ == '__main__':
		app.debug = True
		app.run()
		
	安装环境 flask是在虚拟机中安装的
	virtualenv  venv
	source venv/bin/activate

	pip install flask
	pip install gunicorn

3.配置supervisor

	echo_supervisord_conf > /etc/supervisord.conf

	supervisord -c /etc/supervisord.conf

	ps aux | grep supervisord

	vi /etc/supervisord.conf 最后两行改为

	[include]
	files = /etc/supervisor/*.conf


	vim /etc/supervisor/shop.conf  适当修改

	[program:shop] 
	command=/www/shop/venv/bin/gunicorn -w4 -b0.0.0.0:8001 shop:app
	;numprocs=1
	;process_name=%(program_name)s
	directory=/www/shop
	user=root
	autorestart=true
	redirect_stderr=true
	stdout_logfile = /www/shop/log/info.log
	loglevel=info


	supervisorctl reload  重载配置
	supervisorctl status  查看状态
	
4.配置nginx	
	新建nginx配置文件 /usr/local/nginx/conf/vhost/shop.conf

	server {

			listen       80;
			server_name  yourdomain.com;

			root   /www/shop;

			location / {
					proxy_pass http://127.0.0.1:8001;  #gunicorn对应的端口
					proxy_set_header Host $host;
					proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			}

	}
	保存后测试配置并重启nginx配置
	/usr/local/nginx/sbin/nginx -t
	/etc/init.d/nginx reload