部署django應用

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Autor: wangxianlong

2016/7/10 16:17:55

環境:

• centos 6.5
• python 2.7.5
• django 1.9
• nginx 1.8
• selinux diabled
• 項目目錄: /data/task/xuptlib/

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安裝必要的軟件

python

因爲centos自帶的python2.6.6已經驅動不起來django1.9了. 大概會報這樣的錯誤

Traceback (most recent call last):File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/site-packages/django/__init__.py", line 1, in <module>
from django.utils.version import get_versionFile "/usr/lib/python2.6/site-packages/django/utils/version.py", line 7, in <module>
from django.utils.lru_cache import lru_cacheFile "/usr/lib/python2.6/site-packages/django/utils/lru_cache.py", line 28
fasttypes = {int, str, frozenset, type(None)},
SyntaxError: invalid syntax

因此咱們升級爲python2.7.5. 咱們用來pyenv來管理環境，固然也能夠從新編譯python

# 下載pyenv腳本
wget https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/pyenv-installer

chmod  +x pyenv-installer
./pyenv-installer

# 配置環境
cat /etc/profile.d/pyenv.sh
export PATH="/root/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"

source /etc/profile

# 安裝python 2.7.5
pyenv install 2.7.5

# 使用 python2.7.5
pyenv  local 2.7.5
pyenv rehash

django

yum install -y  python-pip
pip install django==1.9
pip install Mysql-python  # 鏈接數據庫

nginx

wget http://nginx.org/download/nginx-1.8.1.tar.gz

./configure --prefix=/usr/local/nginx --with-http_stub_status_module--with-http_gzip_static_module && make && make install

ln -s /usr/local/nginx/sbin/nginx /usr/bin/

uwsgi

pip install uwsgi

測試一下: uwsgi --http :8000 --wsgi-file test.py

# test.py
def application(env, start_response):
    start_response('200 OK', [('Content-Type','text/html')])
    return [b"Hello World"] # python3
    #return ["Hello World"] # python2

在瀏覽器中看到helloworld

部署

首先看下流程，知道流程思路清晰，作的纔不會亂，問題也好解決:

the web client <-> the web server(nginx) <-> the socket <-> uwsgi <-> Django

1. 部署nginx

配置文件

cat /usr/local/nginx/conf/nginx.conf
#user  nobody;
worker_processes  2;                #主進程數

events {
    use epoll;                      # 使用epoll I/O模型
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
    server_tokens off;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  logs/access.log  main;

    sendfile        on;

    keepalive_timeout  45;
    
    server {                        
        listen  80;
        server_name x.x.x.x;
        charset     utf-8;
            client_max_body_size 32M;

        location /static {
        alias /data/task/xuptlib/staticfile;    #靜態文件位置，本身須要使用django來collect靜態文件
        }

        location / {                            # 注意使用scoket，免去TCP的鏈接消耗
        uwsgi_pass unix:///data/task/xuptlib/bookhelper.sock;
        include uwsgi_params;                   # 在配置文件conf中
        }       
    }   
 
}

配置完成:

nginx -t
nginx

2. django的部署

2.1 關閉django的debug

DEBUG = False
ALLOWED_HOSTS = ['*']       # 注意容許的主機不要忘寫了, 不然HTTP400會來

# 順帶提一下能夠關閉url中admin後臺管理

2.2 配置靜態文件收集

# 剛纔有在nginx配置文件中提到哦！！
STATIC_ROOT = os.path.join(BASE_DIR, "staticfile/")

# 收集
python manage.py collectstatic

3. uwsgi

能夠理解uwsgi在django和nginx搭了橋. 身份有點像Tomcat

配置文件/或者直接用命令

cat /etc/uwsgi.ini 
[uwsgi]
chdir = /data/task/xuptlib                      #項目父目錄
module = bookhelper.wsgi                        #項目下的wsgi文件位置
socket = /data/task/xuptlib/bookhelper.sock     # socket 文件位置，和nginx配置文件中的同樣哦！！
chmod = 666                                     # socket 權限，  不夠的話，會permission denied
master = true   
processes = 3                                   #　起的三個子進程數
vacuum = true                                   # 退出清理環境
pidfile = /var/run/uwsgi.pid
daemonize = /var/log/uwsgi.log                  # 日誌位置

uwsgi啓動腳本

[root@rikewang xuptlib]# cat /etc/init.d/uwsgi 
#! /bin/sh

PATH="/root/.pyenv/plugins/pyenv-virtualenv/shims:/root/.pyenv/shims:/root/.pyenv/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

NAME=uwsgi
EXEC=uwsgi
CONFIGFILE=/etc/$NAME.ini
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

do_start() {
    $EXEC $CONFIGFILE &> /dev/null || echo -n "uwsgi already running"
}

do_stop() {
    $EXEC --stop $PIDFILE &> /dev/null || echo -n "uwsgi not running"
    rm -f $PIDFILE
}
do_reload() {
    $EXEC --reload $PIDFILE &> /dev/null || echo -n "uwsgi can't reload"
}
do_status() {
    ps aux|grep $EXEC
}

case "$1" in
    status)
        echo -en "Status $NAME: \n"
        do_status
    ;;
    start)
        echo -en "Starting $NAME: \n"
        do_start
    ;;
    stop)
        echo -en "Stopping $NAME: \n"
        do_stop
    ;;
    reload|graceful)
        echo -en "Reloading $NAME: \n"
        do_reload
    ;;
    *)
        echo "Usage: $SCRIPTNAME {start|stop|reload}" >&2
        exit 3
    ;;
esac

exit 0

在回顧一下流程:

the web client <-> the web server(nginx) <-> the socket <-> uwsgi <-> Django