部署flask+gunicorn+nginx

安装python3.4

wget https://www.python.org/ftp/python/3.4.1/Python-3.4.1.tar.xz
tar xf Python-3.4.1.tar.xz
./configure --prefix=/usr/local/python3.4 -j4
make -j4 && make install
echo "export PATH=$PATH:/usr/local/python3.4/bin" >>/etc/profile

安装flask

现在开始安装 Flask 以及一些我们会用到的扩展。首选的方式就是创建一个虚拟环境，这个虚拟环境能够安装所有的东西，而你的系统主Python不会受到影响。另外一个好处就是这种方式不需要你拥有root权限。

mkdir microblog
cd microblog/
python3 -m venv flask
cd flask/
bin/pip install flask
bin/pip install flask-login
bin/pip install flask-openid
bin/pip install flask-mail
bin/pip install flask-sqlalchemy
bin/pip install sqlalchemy-migrate
bin/pip install flask-whooshalchemy
bin/pip install flask-wtf
bin/pip install flask-babel
bin/pip install guess_language
bin/pip install flipflop
bin/pip install coverage

写一个hello world程序

cd microblog
mkdir -p app/static 
mkdir -p app/templates
mkdir tmp

#app/__init__.py

from flask import Flask

app = Flask(__name__)
from app import views

#app/views.py

from app import app

@app.route('/')
@app.route('/index')
def index():
return "Hello, World!"

安装gunicorn

gunicorn，是一种web服务器网关接口，类似wsgi和uwsgi

flask/bin/pip install  gunicorn
flask/bin/pip freeze  #看安装过哪些包
flask/bin/gunicorn -w4 -b127.0.0.1:5000 app:app  #启动flask web实例

安装nginx

使用openresty

yum install -y zlib zlib-devel pcre  pcre-devel
wget https://openresty.org/download/openresty-1.11.2.1.tar.gz --no-check-certificate 

./configure --prefix=/usr/local/openresty -j4
gmake -j4
gmake install

#nginx.conf

server {
    listen 80;
    server_name example.org;
    access_log  logs/host.access.log  main;

    location / {
        proxy_pass http://127.0.0.1:5000;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
  }

/usr/local/openresty/bin/openresty  -t
/usr/local/openresty/bin/openresty