django--nginx+mysql for qcloud

虚拟主机配置

install libaries

yum install gcc
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel python-devel python-pip pcre-devel python-setuptools keychain

install mysql

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
yum -y install mysql-server
yum -y install mysql++-devel.x86_64
systemctl enable mysqld.service
systemctl start mysqld.service
systemctl stop mysqld.service

configure mysql

mysql -u root -p   

mysql> select user,host,password from mysql.user;     
***  查询用户的密码,都为空,用下面的命令设置root的密码为root      
mysql> set password for root@localhost=password('root');    

*** 开放远程登录权限     
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'test1234qwer~' WITH GRANT OPTION;    
mysql> FLUSH PRIVILEGES;    

install nginx

yum -y install nginx
systemctl start nginx.service

configure nginx

vi /etc/nginx/nginx.conf

install django

pip install django
pip install redis
pip install requests

pip install MySQL-python
if pip install mysql-python error,then as follow:

download:  
http://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz
http://downloads.sourceforge.net/project/mysql-python/mysql-python-test/1.2.3c1/MySQL-python-1.2.3c1.tar.gz   

安装setuptools
# cd /usr/local/src/python
# tar zxvf setuptools-0.6c11.tar.gz
# cd setuptools-0.6c11
# python setup.py build  
# python setup.py install

# cd /usr/local/src/python
# tar zxvf MySQL-python-1.2.3.tar.gz
# cd MySQL-python-1.2.3
# python setup.py build
# python setup.py install

>>> import MySQLdb

pip install uwsgi

测试uwsgi,创建test.py文件:

def application(env, start_response):
    start_response('200 OK', [('Content-Type','text/html')])
    return [b"Hello World"]

通过uwsgi运行该文件。

ubuntu:~/$ uwsgi --http :8001 --wsgi-file test.py

接下来配置Django与uwsgi连接。此处,假定的我的django项目位置为:/usr/share/nginx/html/CanBing_Scan   

ubuntu:~/$ uwsgi --http :8001 --chdir /usr/share/nginx/html/CanBing_Scan --wsgi-file /usr/share/nginx/html/CanBing_Scan/wsgi.py --master --processes 4 --threads 2 --stats 127.0.0.1:9191

常用选项:

http : 协议类型和端口号

processes : 开启的进程数量

workers : 开启的进程数量,等同于processes(官网的说法是spawn the specified number ofworkers / processes)

chdir : 指定运行目录(chdir to specified directory before apps loading)

wsgi-file : 载入wsgi-file(load .wsgi file)

stats : 在指定的地址上,开启状态服务(enable the stats server on the specified address)

threads : 运行线程。由于GIL的存在,我觉得这个真心没啥用。(run each worker in prethreaded mode with the specified number of threads)

master : 允许主进程存在(enable master process)

daemonize : 使进程在后台运行,并将日志打到指定的日志文件或者udp服务器(daemonize uWSGI)。实际上最常用的,还是把运行记录输出到一个本地文件上。

pidfile : 指定pid文件的位置,记录主进程的pid号。

vacuum : 当服务器退出的时候自动清理环境,删除unix socket文件和pid文件(try to remove all of the generated file/sockets)

configure django + uwsgi

django-admin startproject CanBing_Scan

|-- CanBing_Scan
|   |-- __init__.py
|   |-- __init__.pyc
|   |-- settings.py
|   |-- settings.pyc
|   |-- static
|   |   `-- 1.css
|   |-- urls.py
|   |-- urls.pyc
|   |-- wsgi.py
|   `-- wsgi.pyc
|-- CanBing_uwsgi.ini
`-- manage.py

创建文件如下:
# myweb_uwsgi.ini file
[uwsgi]
# Django-related settings

socket = :8000

# the base directory (full path)
chdir           = /usr/share/nginx/html/CanBing_Scan

# Django s wsgi file
module          = CanBing_Scan.wsgi

# process-related settings
# master
master          = true

# maximum number of worker processes
processes       = 4

# ... with appropriate permissions - may be needed
# chmod-socket    = 664
# clear environment on exit
vacuum          = true

这个配置,其实就相当于在上一小节中通过wsgi命令,后面跟一堆参数的方式,给文件化了。
  socket  指定项目执行的端口号。

  chdir   指定项目的目录。

  module  myweb.wsgi ,可以这么来理解,对于myweb_uwsgi.ini文件来说,与它的平级的有一个myweb目录,这个目录下有一个wsgi.py文件。

  其它几个参数,可以参考上一小节中参数的介绍。

  接下来,切换到myweb项目目录下,通过uwsgi命令读取myweb_uwsgi.ini文件启动项目。




另修改settings.py文件,配置如下:
ALLOWED_HOSTS = ["*"]


通过uwsgi命令读取myweb_uwsgi.ini文件启动项目
ubuntu:~/$ uwsgi --ini myweb_uwsgi.ini 


再接下来要做的就是修改nginx.conf配置文件。打开/etc/nginx/nginx.conf文件,添加如下内容。

configure uwsgi+nginx
server {
    listen         8099; 
    server_name    127.0.0.1 
    charset UTF-8;
    access_log      /var/log/nginx/myweb_access.log;
    error_log       /var/log/nginx/myweb_error.log;

    client_max_body_size 75M;
    autoindex off;
    autoindex_exact_size off;
    autoindex_localtime off;
    location / { 
        include uwsgi_params;
        uwsgi_pass 127.0.0.1:8000;
        uwsgi_read_timeout 2;
    }   
    location /static {
        expires 30d;
        add_header Cache-Control private;
        alias /usr/share/nginx/html/CanBing_Scan/CanBing_Scan/static/;
     }
 }

直接访问页面。

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