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CentOS7部署Flask(Apache、mod_wsgi、Python36、venv)

更新時間：2019年01月02日 11:35:11 作者：yuan_zw

這篇文章主要介紹了CentOS7部署Flask(Apache、mod_wsgi、Python36、venv)，小編覺得挺不錯的，現(xiàn)在分享給大家，也給大家做個參考。一起跟隨小編過來看看吧

一、安裝Apache

# yum install -y httpd httpd-devel

# systemctl start httpd.service    # 啟動
# systemctl stop httpd.service     # 關(guān)閉
# systemctl restart httpd.service   # 重啟
# systemctl enable httpd.service    # 開機(jī)自啟

防火墻開放80端口

# firewall-cmd --zone=public --add-port=80/tcp --permanent
# firewall-cmd --reload

開啟Apache，外網(wǎng)已經(jīng)可以通過ip訪問Apache的默認(rèn)頁面了

二、安裝Python36、pip3、virtualenv

# yum install -y epel-release
# yum install -y python36
# python36 -V
Python 3.6.6

# yum install -y python36-setuptools
# easy_install-3.6 pip
# pip3 -V
pip 18.1 from /usr/local/lib/python3.6/site-packages/pip-18.1-py3.6.egg/pip (python 3.6)

# pip3 install virtualenv

三、創(chuàng)建項目

創(chuàng)建flask項目（最簡單的，一個項目文件夾、一個啟動文件）

# mkdir /var/www/flask_test    # 項目文件夾
# vi /var/www/flask_test/app.py  # 啟動文件

啟動文件例子：

from flask import Flask, request
 
app = Flask(__name__)
 
@app.route('/')
def hello_world():
  return 'Hello World'
 
@app.route('/hello')
def hello():
  name = request.args.get('name','')
  return 'Hello ' + name + '!'
 
if __name__ == '__main__':
  app.run()

在項目文件夾下創(chuàng)建虛擬環(huán)境，安裝flask

# cd /var/www/flask_test
# virtualenv py3env      # 創(chuàng)建虛擬環(huán)境
# source py3env/bin/activate  # 進(jìn)入虛擬環(huán)境
 
(py3env) # pip install flask  # 安裝flask
(py3env) # deactivate     # 退出虛擬環(huán)境

四、在虛擬環(huán)境中用pip安裝mod_wsgi

# yum install -y python36-devel.x86_64   # 一個依賴，不安裝的話，下面pip會報錯。。
# source py3env/bin/activate        # 進(jìn)入虛擬環(huán)境
(py3env) # pip install mod_wsgi      # 安裝mod_wsgi
(py3env) # mod_wsgi-express install-module # 執(zhí)行該命令，把輸出內(nèi)容復(fù)制下來
LoadModule wsgi_module "/usr/lib64/httpd/modules/mod_wsgi-py36.cpython-36m-x86_64-linux-gnu.so"
WSGIPythonHome "/var/www/flask_test/py3env"
 
(py3env) # deactivate           # 退出虛擬環(huán)境

修改Apache的配置

# vi /etc/httpd/conf/httpd.conf

復(fù)制上面得到的這行內(nèi)容，添加到配置文件的最后

復(fù)制代碼代碼如下:

LoadModule wsgi_module "/usr/lib64/httpd/modules/mod_wsgi-py36.cpython-36m-x86_64-linux-gnu.so"

五、配置mod_wsgi

# vi /var/www/html/flask_test/app.wsgi

寫入以下內(nèi)容（根據(jù)：https://dormousehole.readthedocs.io/en/latest/deploying/mod_wsgi.html）

activate_this = '/var/www/flask_test/py3env/bin/activate_this.py'
with open(activate_this) as file_:
  exec(file_.read(), dict(__file__=activate_this))
 
import sys
sys.path.insert(0, '/var/www/flask_test')
from app import app as application

配置Apache

# vi /etc/httpd/conf/httpd.conf

寫入以下內(nèi)容（根據(jù)：https://dormousehole.readthedocs.io/en/latest/deploying/mod_wsgi.html#id1）

<VirtualHost *:80>
  ServerName example.com
  WSGIScriptAlias / /var/www/flask_test/app.wsgi
  <Directory /var/www/flask_test>
    Require all granted
  </Directory>
</VirtualHost>

OK了，啟動Apache，通過這臺服務(wù)器的ip就能訪問網(wǎng)頁了

測試一些app.py里面寫的兩個路徑