Python作为当前最火爆最热门，也是最主要的Web开发语言之一，在其二十多年的历史中出现了数十种Web框架，比如Django、Tornado、Flask、Twisted、Bottle和Web.py等，它们有的历史悠久，有的发展迅速，还有的已经停止维护。Django是一个开放源代码的Web应用框架，由Python写成, 它作为Python重量级选手中最有代表性的一个Web框架, 许多成功的网站和APP都基于Django。
线上的web环境准备用Nginx+Django部署, 下面分别实现了Nginx+Django的http方式和Nginx+uwsgi+Django的sock方式 (并通过supervisor以守护进程方式管理uwsgi),在大并发情况下, 使用第二种方式性能会更好. 简单记录下操作过程:
一. Nginx+Django (http方式)
操作系统为Centos7.5 (本机ip为172.16.60.211)
[root@web-node ~]# cat /etc/redhat-release
CentOS Linux release 7.5.1804 (Core)
关闭防火墙和selinux
[root@web-node ~]# systemctl disable firewalld
[root@web-node ~]# systemctl stop firewalld
[root@web-node ~]# setenforce 0
[root@web-node ~]# vim /etc/sysconfig/selinux
SELINUX=disabled
1) 安装Python3.6.1
系统默认的是python2.7, 需要升级到Python3.6.1 ( 该Django项目跑在Python3.6.1版本下)
[root@web-node ~]# python -V
Python 2.7.5
下载并安装Python3.6.1
[root@web-node ~]# yum install -y gcc gcc-c++
[root@web-node ~]# yum -y install epel-release
[root@web-node ~]# yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel
[root@web-node ~]# cd /usr/local/src/
[root@web-node src]# wget wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tar.xz
[root@web-node src]# tar xf Python-3.6.1.tar.xz
[root@web-node src]# cd Python-3.6.1
[root@web-node Python-3.6.1]# ./configure --prefix=/usr/local/python3
[root@web-node Python-3.6.1]# make && make install
确认安装的Python下有pip3
[root@web-node Python-3.6.1]# ll /usr/local/python3/bin/python3
lrwxrwxrwx 1 root root 9 Dec 12 15:57 /usr/local/python3/bin/python3 -> python3.6
[root@web-node Python-3.6.1]# ll /usr/local/python3/bin/pip3
-rwxr-xr-x 1 root root 222 Dec 12 15:57 /usr/local/python3/bin/pip3
替换python
[root@web-node Python-3.6.1]# cd /usr/bin
[root@web-node bin]# mv python python.bak
[root@web-node bin]# ln -s /usr/local/python3/bin/python3.6 /usr/bin/python
[root@web-node bin]# python -V
Python 3.6.1
设置系统环境变量
[root@web-node bin]# vim /etc/profile
PATH=$PATH:/usr/local/python3/bin
[root@web-node bin]# source /etc/profile
解决遗留问题
所有python相关的应用，如果使用/usr/bin/python开头的脚本，替换为/usr/bin/python2.7
[root@web-node ~]# vim /usr/bin/yum
#!/usr/bin/python2.7
[root@web-node ~]# vim /usr/libexec/urlgrabber-ext-down
#! /usr/bin/python2.7
2) 安装nginx
[root@web-node ~]# useradd www
[root@web-node ~]# cd /usr/local/src/
[root@web-node src]# wget http://10.0.8.50/software/nginx-1.12.2.tar.gz
[root@web-node src]# tar -zvxf nginx-1.12.2.tar.gz
[root@web-node src]# cd nginx-1.12.2
[root@web-node nginx-1.12.2]# ./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_flv_module --with-http_stub_status_module --with-http_gzip_static_module --with-pcre --with-stream
[root@web-node nginx-1.12.2]# make && make install
配置nginx
[root@web-node nginx-1.12.2]# cd /usr/local/nginx/conf/
[root@web-node conf]# cp nginx.conf nginx.conf.bak
[root@web-node conf]# > nginx.conf
[root@web-node conf]# vim nginx.conf
user www;
worker_processes 4;
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
#pid logs/nginx.pid;
events {
worker_connections 65535;
}
http {
include mime.types;
default_type application/octet-stream;
charset utf-8;
######
## set access log format
######
log_format main '$http_x_forwarded_for $remote_addr $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_cookie" $host $request_time';
#######
## http setting
#######
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
proxy_cache_path /var/www/cache levels=1:2 keys_zone=mycache:20m max_size=2048m inactive=60m;
proxy_temp_path /var/www/cache/tmp;
fastcgi_connect_timeout 3000;
fastcgi_send_timeout 3000;
fastcgi_read_timeout 3000;
fastcgi_buffer_size 256k;
fastcgi_buffers 8 256k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
fastcgi_intercept_errors on;
#
client_header_timeout 600s;
client_body_timeout 600s;
# client_max_body_size 50m;
client_max_body_size 100m;
client_body_buffer_size 256k;
gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.1;
gzip_comp_level 9;
gzip_types text/plain application/x-javascript text/css application/xml text/javascript application/x-httpd-php;
gzip_vary on;
## includes vhosts
include vhosts/*.conf;
}
[root@web-node conf]# mkdir /usr/local/nginx/conf/vhosts
[root@web-node conf]# mkdir -p /var/www/cache
[root@web-node conf]# ulimit 65535
[root@web-node conf]# vim vhosts/ng.conf
upstream py-8001 {
ip_hash;
server 127.0.0.1:8001 max_fails=3 fail_timeout=15s;
server 127.0.0.1:8002 max_fails=3 fail_timeout=15s;
}
server {
listen 80;
server_name kevin.com www.kevin.com btc.kevin.com eth.kevin.com;
access_log /usr/local/nginx/logs/8001-access.log main;
error_log /usr/local/nginx/logs/8001-error.log;
location / {
proxy_pass http://py-8001;
proxy_redirect off ;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header REMOTE-HOST $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 300;
proxy_send_timeout 300;
proxy_read_timeout 600;
proxy_buffer_size 256k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;
proxy_temp_file_write_size 256k;
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504 http_404;
proxy_max_temp_file_size 128m;
#proxy_cache mycache;
#proxy_cache_valid 200 302 1h;
#proxy_cache_valid 301 1d;
#proxy_cache_valid any 1m;
}
location /static/ {
alias /data/www/APPServer/staticfiles/;
}
}
接着配置禁止ip访问, 只能通过域名访问 (vhosts下有很多域名的conf配置，那么只需要创建创建一个文件，比如deny.ip.conf，输入下面五行内容，这样就全局禁止了ip访问，只能使用域名访问了！）)
[root@web-node ~]# cat /usr/local/nginx/conf/vhosts/deny.ip.conf
server{
listen 80 default;
server_name _;
return 500;
}
检查nginx配置文件是否正确
[root@r1014001 ~]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
这样nginx下就只能使用域名访问了, 使用ip访问的话, 就会出现"500 Internal Server Error"的信息, 即禁止ip访问!
3) 安装django (项目中使用的mysql是阿里云上的rds)
[root@web-node ~]# yum install MySQL-python
[root@web-node ~]# pip3 install Django==1.11 //最好使用pip3的全路径, 即"/usr/local/python3/bin/pip3 install Django==1.11", 否则可能会报错
[root@web-node ~]# pip3 install pymysql //最好使用pip3的全路径, 即"/usr/local/python3/bin/pip3 install pymysql", 否则可能会报错
django项目存放路径: /data/www/APPServer
静态页存放路径: /data/www/APPServer/staticfiles/
静态页通过nginx访问展示(匹配static的路径), 动态页面通过nginx转发给python处理
将django项目代码拷贝到/data/www/APPServer 目录中
[root@web-node ~]# mkdir -p /data/www/APPServer/
[root@web-node ~]# chown -R www.www /data/www/APPServer
[root@web-node ~]# cd /data/www/APPServer/
[root@web-node APPServer]# ls
db.sqlite3 django_auth_example manage.py staticfiles templates users
[root@web-node APPServer]# ls django_auth_example/
__init__.py __init__.pyc __pycache__ settings.py settings.pyc urls.py urls.pyc wsgi.py
[root@web-node APPServer]# ll staticfiles/strategy/
total 1552
-rw-r--r-- 1 www www 51215 Dec 11 17:55 all.css
-rw-r--r-- 1 www www 67742 Dec 11 17:55 bootstrap.bundle.min.js
-rw-r--r-- 1 www www 144877 Dec 11 17:55 bootstrap.min.css
-rw-r--r-- 1 www www 717611 Dec 11 17:55 echarts.min.js
-rw-r--r-- 1 www www 31000 Dec 11 17:55 font-awesome.min.css
-rw-r--r-- 1 www www 5187 Dec 11 17:55 index.js
-rw-r--r-- 1 www www 86351 Dec 11 17:55 jquery-3.1.0.min.js
-rw-r--r-- 1 www www 86927 Dec 11 17:55 jquery.min.js
-rw-r--r-- 1 www www 721 Dec 11 17:55 main.css
-rw-r--r-- 1 www www 0 Dec 11 17:55 main.js
-rw-r--r-- 1 www www 5872 Dec 11 17:55 master.js
-rw-r--r-- 1 www www 9662 Dec 11 17:55 tuzi.ico
-rw-r--r-- 1 www www 351295 Dec 11 17:55 v3-4b631620.css
启动python程序, 由于是交互式的, 这里通过tmux终端复用工具
[root@web-node ~]# yum install tmux
编写python程序启动和关闭脚本
[root@web-node ~]# mkdir /data/script
[root@web-node ~]# cd /data/script
启动脚本 (这里我启动了两个python程序进程, 并通过nginx进行代理转发, 将请求负载转发到这两个python端口上. 其实一台机器最好启动一个python进程, 多台机器启动多个python进程并通过nginx转发)
[root@web-node script]# vim py_start.sh
#!/bin/bash
tmux new -d -s bobo_session && tmux send -t bobo_session 'python /data/www/APPServer/manage.py runserver 0.0.0.0:8001' ENTER
tmux new -d -s bobo1_session && tmux send -t bobo1_session 'python /data/www/APPServer/manage.py runserver 0.0.0.0:8002' ENTER
================================================================================
温馨提示:
上面的python程序启动时, 端口前面最好不要加ip了, 比如"/usr/local/python3/bin/python3 /data/www/APPServer/manage.py runserver 8001"
这样就只能通过nginx代理访问了, 即http://172.16.60.211, 使用http://172.16.60.211:8001和http://172.16.60.211:8002就不能访问了
================================================================================
关闭脚本
[root@web-node script]# vim py_stop.sh
#!/bin/bash
tmux kill-session -t bobo_session && tmux kill-session -t bobo1_session
授予脚本执行权限
[root@web-node script]# chmod 755 ./*
[root@web-node script]# ll
total 8
-rwxr-xr-x 1 root root 267 Dec 12 16:55 py_start.sh
-rwxr-xr-x 1 root root 85 Dec 12 16:55 py_stop.sh
启动nginx和python程序
[root@web-node ~]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@web-node ~]# /usr/local/nginx/sbin/nginx
[root@web-node ~]# sh /data/script/py_start.sh
[root@web-node ~]# ps -ef|grep nginx
root 1322 1 0 16:56 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www 1323 1322 0 16:56 ? 00:00:00 nginx: worker process
www 1324 1322 0 16:56 ? 00:00:00 nginx: worker process
www 1325 1322 0 16:56 ? 00:00:00 nginx: worker process
www 1326 1322 0 16:56 ? 00:00:00 nginx: worker process
www 1327 1322 0 16:56 ? 00:00:00 nginx: cache manager process
www 1328 1322 0 16:56 ? 00:00:00 nginx: cache loader process
root 1397 12945 0 16:56 pts/0 00:00:00 grep --color=auto nginx
[root@web-node ~]# ps -ef|grep manage
www 1327 1322 0 16:56 ? 00:00:00 nginx: cache manager process
root 1370 1341 3 16:56 pts/4 00:00:00 python /data/www/APPServer/manage.py runserver 0.0.0.0:8002
root 1371 1336 3 16:56 pts/2 00:00:00 python /data/www/APPServer/manage.py runserver 0.0.0.0:8001
root 1374 1370 6 16:56 pts/4 00:00:00 /usr/bin/python /data/www/APPServer/manage.py runserver 0.0.0.0:8002
root 1375 1371 5 16:56 pts/2 00:00:00 /usr/bin/python /data/www/APPServer/manage.py runserver 0.0.0.0:8001
root 1399 12945 0 16:56 pts/0 00:00:00 grep --color=auto manage
[root@web-node ~]# lsof -i:80
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
nginx 1322 root 7u IPv4 68809825 0t0 TCP *:http (LISTEN)
nginx 1323 www 7u IPv4 68809825 0t0 TCP *:http (LISTEN)
nginx 1324 www 7u IPv4 68809825 0t0 TCP *:http (LISTEN)
nginx 1325 www 7u IPv4 68809825 0t0 TCP *:http (LISTEN)
nginx 1326 www 7u IPv4 68809825 0t0 TCP *:http (LISTEN)
[root@web-node ~]# lsof -i:8001
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
python 1375 root 4u IPv4 68810914 0t0 TCP *:vcom-tunnel (LISTEN)
[root@web-node ~]# lsof -i:8002
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
python 1374 root 4u IPv4 68811847 0t0 TCP *:teradataordbms (LISTEN)
[root@web-node ~]# tmux ls
bobo1_session: 1 windows (created Wed Dec 12 16:56:51 2018) [194x45]
bobo_session: 1 windows (created Wed Dec 12 16:56:51 2018) [194x45]
最后将nginx配置文件中指定的域名kevin.com, www.kevin.com, btc.kevin.com, eth.kevin.com 解析到本机ip
然后输入http://www.kevin.com 即可访问django的web项目.
二. Nginx+uwsgi+Django (socker方式)
Django的部署可以有很多方式，采用nginx+uwsgi的方式是Django生产环境部署中比较常见的一种方式。
uwsgi介绍
uWSGI是一个Web服务器，它实现了WSGI协议、uwsgi、http等协议。Nginx中HttpUwsgiModule的作用是与uWSGI服务器进行交换。
这里一定要注意 WSGI , uwsgi , uWSGI 这三个概念的区分:
1) WSGI是一种Web服务器网关接口。它是一个Web服务器（如nginx，uWSGI等服务器）与web应用（如用Flask框架写的程序）通信的一种规范。
2) uwsgi是一种线路协议而不是通信协议，在此常用于在uWSGI服务器与其他网络服务器的数据通信。
3) uWSGI是实现了uwsgi和WSGI两种协议的Web服务器。
uwsgi协议是一个uWSGI服务器自有的协议，它用于定义传输信息的类型，每一个uwsgi packet前4byte为传输信息类型描述，它与WSGI相比是两样东西。uwsgi是一种线路协议而不是通信协议，在此常用于在uwsgi服务器与其他网络服务器的数据通信。uwsgi协议是一个uwsgi服务器自有的协议，它用于定义传输信息的类型。uwsgi实现了WSGI的所有接口，是一个快速、自我修复、开发人员和系统管理员友好的服务器。uwsgi代码完全用C编写，效率高、性能稳定。
uWSGI的主要特点如下
- 超快的性能;
- 低内存占用（实测为apache2的mod_wsgi的一半左右）;
- 多app管理（终于不用冥思苦想下个app用哪个端口比较好了）;
- 详尽的日志功能（可以用来分析app性能和瓶颈）;
- 高度可定制（内存大小限制，服务一定次数后重启等）;
uwsgi作用
Django 是一个 Web 框架，框架的作用在于处理 request 和 reponse，其他的不是框架所关心的内容。所以怎么部署 Django 不是 Django 所需要关心的。Django 所提供的是一个开发服务器，这个开发服务器，没有经过安全测试，而且使用的是 Python 自带的 simple HTTPServer 创建的，在安全性和效率上都是不行的而uwsgi 是一个全功能的 HTTP 服务器，他要做的就是把 HTTP 协议转化成语言支持的网络协议。比如把 HTTP 协议转化成 WSGI 协议，让 Python 可以直接使用。
uwsgi 是一种 uwsgi 的内部协议，使用二进制方式和其他应用程序进行通信。
总之uwsgi真的是一个好东西, 用起来性能非常高. 如果使用nginx+uwsgi方式, nginx作为反向代理，和uwsgi间通过http交互。配置nginx和uwsgi通过socket结合的方式。原理：用户发送http请求到nginx，nginx通过socket把请求交给uwsgi，uwsgi拿到django的处理结果，通过socket返还给nginx，nginx通过http返回结果给用户。操作如下:
安装uwsgi
[root@web-node ~]# pip3 install uwsgi
编写测试
[root@web-node ~]# vim /root/test.py
def application(env, start_response):
start_response('200 OK', [('Content-Type','text/html')])
return [b"Hello World"]
启动测试
[root@web-node ~]# uwsgi --http :9009 --wsgi-file test.py
接着访问http://172.16.60.211:9009/ , 即可看到"Hello World"的访问信息.
下面开始nginx+uwsgi的配置
[root@web-node ~]# ll /usr/local/nginx/conf/uwsgi*
-rw-r--r-- 1 root root 664 Dec 12 16:25 /usr/local/nginx/conf/uwsgi_params
-rw-r--r-- 1 root root 664 Dec 12 16:25 /usr/local/nginx/conf/uwsgi_params.default
手动编写uwsgi.ini配置文件 (由于这里我启动了两个python程序, 即8001和8002端口, 所以这里要编写两个uwsgi配置文件)
[root@web-node ~]# vim /usr/local/nginx/conf/uwsgi1.ini
[uwsgi]
#the local unix socket file than commnuincate to Nginx
socket = 127.0.0.1:8001
# the base directory (full path)
chdir = /data/www/APPServer
# Django's wsgi file
wsgi-file = django_auth_example/wsgi.py
# maximum number of worker processes
processes = 4
#thread numbers startched in each worker process
threads = 2
[root@web-node ~]# vim /usr/local/nginx/conf/uwsgi2.ini
[uwsgi]
#the local unix socket file than commnuincate to Nginx
socket = 127.0.0.1:8002
# the base directory (full path)
chdir = /data/www/APPServer
# Django's wsgi file
wsgi-file = django_auth_example/wsgi.py
# maximum number of worker processes
processes = 4
#thread numbers startched in each worker process
threads = 2
启动uwsgi (先关闭之前启动的python程序和nginx)
[root@web-node ~]# sh /data/script/py_stop.sh
[root@web-node ~]# /usr/local/nginx/sbin/nginx -s stop
[root@web-node ~]# uwsgi /usr/local/nginx/conf/uwsgi1.ini
[root@web-node ~]# uwsgi /usr/local/nginx/conf/uwsgi2.ini
由于uwsgi启动也是交互式, 所以还是需要用到tmux工具, 编写uwsgi启动和关闭脚本
uwsgi启动脚本
[root@web-node ~]# vim /data/script/uwsgi_start.sh
#!/bin/bash
tmux new -d -s bobo_session && tmux send -t bobo_session 'uwsgi /usr/local/nginx/conf/uwsgi1.ini' ENTER
tmux new -d -s bobo1_session && tmux send -t bobo1_session 'uwsgi /usr/local/nginx/conf/uwsgi2.ini' ENTER
uwsgi关闭脚本
[root@web-node ~]# vim /data/script/uwsgi_stop.sh
#!/bin/bash
tmux kill-session -t bobo_session && tmux kill-session -t bobo1_session
ps -ef|grep uwsgi|grep -v grep|awk '{print $2}'|xargs kill -9 >/dev/null 2>&1
执行uwsgi启动
[root@web-node ~]# sh /data/script/uwsgi_start.sh
[root@web-node ~]# tmux ls
bobo1_session: 1 windows (created Wed Dec 12 22:49:49 2018) [136x29]
bobo_session: 1 windows (created Wed Dec 12 22:49:49 2018) [136x29]
[root@web-node ~]# lsof -i:8001
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
uwsgi 21161 root 3u IPv4 69341001 0t0 TCP localhost:vcom-tunnel (LISTEN)
uwsgi 21165 root 3u IPv4 69341001 0t0 TCP localhost:vcom-tunnel (LISTEN)
uwsgi 21166 root 3u IPv4 69341001 0t0 TCP localhost:vcom-tunnel (LISTEN)
uwsgi 21167 root 3u IPv4 69341001 0t0 TCP localhost:vcom-tunnel (LISTEN)
[root@web-node ~]# lsof -i:8002
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
uwsgi 21162 root 3u IPv4 69341406 0t0 TCP localhost:teradataordbms (LISTEN)
uwsgi 21172 root 3u IPv4 69341406 0t0 TCP localhost:teradataordbms (LISTEN)
uwsgi 21173 root 3u IPv4 69341406 0t0 TCP localhost:teradataordbms (LISTEN)
uwsgi 21174 root 3u IPv4 69341406 0t0 TCP localhost:teradataordbms (LISTEN)
[root@web-node ~]# ps -ef|grep uwsgi
root 21161 21128 0 22:49 pts/1 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 21162 21135 0 22:49 pts/2 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 21165 21161 0 22:49 pts/1 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 21166 21161 0 22:49 pts/1 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 21167 21161 0 22:49 pts/1 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 21172 21162 0 22:49 pts/2 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 21173 21162 0 22:49 pts/2 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 21174 21162 0 22:49 pts/2 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 21231 18304 0 22:50 pts/0 00:00:00 grep --color=auto uwsgi
接着进行nginx+uwsgi配置
[root@web-node ~]# vim /usr/local/nginx/conf/vhosts/ng.conf
upstream django {
ip_hash;
server 127.0.0.1:8001 max_fails=3 fail_timeout=15s;
server 127.0.0.1:8002 max_fails=3 fail_timeout=15s;
}
server {
listen 80;
server_name kevin.com www.kevin.com btc.kevin.com eth.kevin.com;
charset utf-8;
access_log /usr/local/nginx/logs/8001-access.log main;
error_log /usr/local/nginx/logs/8001-error.log;
location / {
uwsgi_pass django;
include /usr/local/nginx/conf/uwsgi_params;
}
location /static/ {
alias /data/www/APPServer/staticfiles/;
}
}
启动nginx
[root@web-node ~]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@web-node ~]# /usr/local/nginx/sbin/nginx
[root@web-node ~]# ps -ef|grep nginx
root 21161 21128 0 22:49 pts/1 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 21162 21135 0 22:49 pts/2 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 21165 21161 0 22:49 pts/1 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 21166 21161 0 22:49 pts/1 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 21167 21161 0 22:49 pts/1 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 21172 21162 0 22:49 pts/2 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 21173 21162 0 22:49 pts/2 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 21174 21162 0 22:49 pts/2 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 21263 1 0 22:51 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www 21264 21263 0 22:51 ? 00:00:00 nginx: worker process
www 21265 21263 0 22:51 ? 00:00:00 nginx: worker process
www 21266 21263 0 22:51 ? 00:00:00 nginx: worker process
www 21267 21263 0 22:51 ? 00:00:00 nginx: worker process
www 21268 21263 0 22:51 ? 00:00:00 nginx: cache manager process
www 21269 21263 0 22:51 ? 00:00:00 nginx: cache loader process
root 21271 18304 0 22:51 pts/0 00:00:00 grep --color=auto nginx
[root@web-node ~]# lsof -i:80
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
nginx 21263 root 7u IPv4 69341986 0t0 TCP *:http (LISTEN)
nginx 21264 www 7u IPv4 69341986 0t0 TCP *:http (LISTEN)
nginx 21265 www 7u IPv4 69341986 0t0 TCP *:http (LISTEN)
nginx 21266 www 7u IPv4 69341986 0t0 TCP *:http (LISTEN)
nginx 21267 www 7u IPv4 69341986 0t0 TCP *:http (LISTEN)
最后输入http://www.kevin.com, 即可访问django的web项目
Supervisor管理uwsgi (守护进程模式)
由于直接执行uwsgi是交互式的, 所以上面使用了tmux终端复用工具, 如果不使用tmux, 则可以使用supervisor, 使用supervisor管理uwsgi, 为了让它后台运行，需要让它变成守护进程。
1) 安装supervisor
[root@web-node ~]# pip3 install supervisor
会遇到如下报错信息:
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-ns8sn4n6/supervisor/
You are using pip version 9.0.1, however version 18.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
这是因为supervisor不支持python3, pip3使用的是python3.6.1版本
[root@web-node ~]# python -V
Python 3.6.1
1.1) 安装pyenv
为了使用supervisor，我们需要python2.7的环境。而多版本python的管理，推荐使用pyenv。
安装pyenv套装
[root@web-node ~]# curl -L https://raw.githubusercontent.com/pyenv/pyenv-installer/master/bin/pyenv-installer | bash
内容除了包含 pyenv 以外，还包含如下插件：
- pyenv-doctor
- pyenv-installer
- pyenv-update
- pyenv-virtualenv
- pyenv-which-ext
=========================================================
温馨提示:
以上https://raw.githubusercontent.com/pyenv/pyenv-installer/master/bin/pyenv-installer的访问内容
, 可以将内容粘出来放在服务器的一个shell脚本文件中, 然后执行该脚本用以安装pyenv
该脚本的百度下载地址: https://pan.baidu.com/s/1wW9ylrmc4Q9wxu_i3-1wYA
提取密码: rhtj
执行脚本进行安装(执行前授予755权限)
# chmod 755 pyenv-installer
# /bin/bash pyenv-installer
=========================================================
路径添加
[root@web-node ~]# ll -d /root/.pyenv
drwxr-xr-x 11 root root 331 Dec 13 10:08 /root/.pyenv
[root@web-node ~]# vim ~/.bash_profile //添加下面内容
export PATH="/root/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"
使之生效
[root@web-node ~]# source ~/.bash_profile
查看安装情况
[root@web-node ~]# pyenv -v
pyenv 1.2.8
常用命令
- 查看可安装的python版本列表：pyenv install -l
- 安装指定版本的python：pyenv install 2.7.3
- 查看已安装的python：pyenv versions
- 查看当前设为默认的python版本：pyenv version
1.2) 安装python2.7环境
pyenv安装指定版本的python
[root@web-node python]# pyenv install 2.7.13
Installing Python-2.7.13...
Installed Python-2.7.13 to /root/.pyenv/versions/2.7.13
[root@web-node ~]# /root/.pyenv/versions/2.7.13/bin/python2.7 -V
Python 2.7.13
查看pyenv已安装的python
[root@web-node ~]# pyenv versions
system
* 2.7.13 (set by /root/.pyenv/version)
2.7.13/envs/supervisor
查看当前pyenv设为默认的python版本
[root@web-node ~]# pyenv version
2.7.13 (set by /root/.pyenv/version)
1.3) 安装虚拟环境
新建supervisor虚拟环境
[root@web-node ~]# pyenv virtualenv 2.7.13 supervisor
激活虚拟环境
[root@web-node ~]# source /root/.pyenv/versions/2.7.13/envs/supervisor/bin/activate supervisor
(supervisor) [root@web-node ~]#
或者
(supervisor) [root@web-node ~]# source activate supervisor
(supervisor) [root@web-node ~]#
安装supervisor
(supervisor) [root@web-node ~]# yum install supervisor
(supervisor) [root@web-node ~]# pip install supervisor
生成配置文件
(supervisor) [root@web-node ~]# mkdir -p /etc/supervisor/
(supervisor) [root@web-node ~]# echo_supervisord_conf > /etc/supervisord.conf
修改配置文件 (文件最底行添加下面内容)
(supervisor) [root@web-node ~]# vim /etc/supervisord.conf
[include]
files = /etc/supervisor/*.conf
运行
(supervisor) [root@web-node ~]# /root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisord -c /etc/supervisord.conf
(supervisor) [root@web-node ~]# ps -ef|grep supervisord
root 30765 1 0 10:57 ? 00:00:00 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/python2.7 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisord -c /etc/supervisord.conf
root 30798 10184 0 10:57 pts/1 00:00:00 grep --color=auto supervisord
1.4) 编辑supervisord.service
(supervisor) [root@web-node ~]# cp /usr/lib/systemd/system/supervisord.service /usr/lib/systemd/system/supervisord.service.bak
(supervisor) [root@web-node ~]# vim /usr/lib/systemd/system/supervisord.service //内容修改为(之前的内容清空, 复制下面的内容)
[Unit]
Description=Process Monitoring and Control Daemon
After=rc-local.service nss-user-lookup.target
[Service]
Type=forking
ExecStart=/root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisord -c /etc/supervisord.conf
ExecReload=/root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisorctl reload
ExecStop=/root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisorctl shutdown
[Install]
WantedBy=multi-user.target
1.5) 重启supervisor (多测试几次)
(supervisor) [root@web-node ~]# ps aux | grep supervisord
root 31663 0.0 0.1 215176 13856 ? Ss 11:03 0:00 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/python2.7 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisord -c /etc/supervisord.conf
root 31781 0.0 0.0 112704 976 pts/1 S+ 11:03 0:00 grep --color=auto supervisord
由于上面的supervisord进程是使用配置文件手动启动的, 首次要使用下面的命令关闭,然后使用"systemctl start/stop supervisord" 才会生效
如果第一次不使用下面命令关闭, 而首次就使用"systemctl stop supervisord" 则关闭不了.
(supervisor) [root@web-node ~]# /root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisorctl shutdown
Shut down
(supervisor) [root@web-node ~]# ps aux | grep supervisord
root 31857 0.0 0.0 112704 972 pts/1 S+ 11:04 0:00 grep --color=auto supervisord
(supervisor) [root@web-node ~]# systemctl start supervisord
(supervisor) [root@web-node ~]# ps aux | grep supervisord
root 31892 0.0 0.1 217312 13872 ? Ss 11:04 0:00 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/python2.7 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisord -c /etc/supervisord.conf
root 31919 0.0 0.0 112704 972 pts/1 S+ 11:04 0:00 grep --color=auto supervisord
(supervisor) [root@web-node ~]# systemctl stop supervisord
(supervisor) [root@web-node ~]# ps aux | grep supervisord
root 31986 0.0 0.0 112704 976 pts/1 S+ 11:04 0:00 grep --color=auto supervisord
(supervisor) [root@web-node ~]# systemctl start supervisord
(supervisor) [root@web-node ~]# ps aux | grep supervisord
root 32037 0.0 0.1 217312 13868 ? Ss 11:04 0:00 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/python2.7 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisord -c /etc/supervisord.conf
root 32064 0.0 0.0 112704 976 pts/1 S+ 11:04 0:00 grep --color=auto supervisord
1.6) 设置开机启动
(supervisor) [root@web-node ~]# systemctl enable supervisord
Created symlink from /etc/systemd/system/multi-user.target.wants/supervisord.service to /usr/lib/systemd/system/supervisord.service.
2) 守护uwsgi
先关闭之前使用tmux启动的uwsgi进程
(supervisor) [root@web-node ~]# ps -ef|grep uwsgi
root 29088 29055 0 00:53 pts/4 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 29089 29061 0 00:53 pts/5 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 29092 29089 0 00:53 pts/5 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 29093 29089 0 00:53 pts/5 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 29094 29089 0 00:53 pts/5 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi2.ini
root 29098 29088 0 00:53 pts/4 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 29099 29088 0 00:53 pts/4 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 29100 29088 0 00:53 pts/4 00:00:00 uwsgi /usr/local/nginx/conf/uwsgi1.ini
root 32579 10184 0 11:09 pts/1 00:00:00 grep --color=auto uwsgi
(supervisor) [root@web-node ~]# tmux ls
bobo1_session: 1 windows (created Thu Dec 13 00:53:19 2018) [136x29]
bobo_session: 1 windows (created Thu Dec 13 00:53:19 2018) [136x29]
(supervisor) [root@web-node ~]# sh /data/script/uwsgi_stop.sh
Killed
(supervisor) [root@web-node ~]# ps -ef|grep uwsgi
root 32689 10184 0 11:09 pts/1 00:00:00 grep --color=auto uwsgi
(supervisor) [root@web-node ~]# tmux ls
failed to connect to server
2.1) 配置supervisor, 以守护进程方式管理uwsgi
先关闭上面启动的supervisord
(supervisor) [root@web-node supervisor]# systemctl stop supervisord
(supervisor) [root@web-node supervisor]# ps aux | grep supervisord
root 2467 0.0 0.0 112704 972 pts/1 S+ 11:27 0:00 grep --color=auto supervisord
因为nginx和uwsgi通过socket方式交互，所以需要修改uwsgi.ini的配置为:
(supervisor) [root@web-node supervisor]# cd /usr/local/nginx/conf/
(supervisor) [root@web-node conf]# cp uwsgi1.ini uwsgi1.ini.bak
(supervisor) [root@web-node conf]# cp uwsgi2.ini uwsgi2.ini.bak
(supervisor) [root@web-node conf]# vim uwsgi1.ini
[uwsgi]
socket = :8001
chdir = /data/www/APPServer
wsgi-file = django_auth_example/wsgi.py
static-map = '/static=static'
master = true
processes = 2
enable-threads = true
(supervisor) [root@web-node conf]# vim uwsgi2.ini
[uwsgi]
socket = :8002
chdir = /data/www/APPServer
wsgi-file = django_auth_example/wsgi.py
static-map = '/static=static'
master = true
processes = 2
enable-threads = true
接着在/etc/supervisor中新建文件bobo.conf和bobo1.conf(这里启动了两个端口, 所以也要配置两个)
(supervisor) [root@web-node supervisor]# vim bobo.conf
[program:bobo]
command=/usr/local/python3/bin/uwsgi /usr/local/nginx/conf/uwsgi1.ini
directory=/usr/local/nginx/conf/
startsecs=0
stopwaitsecs=0
autostart=true
autorestart=true
(supervisor) [root@web-node supervisor]# vim bobo1.conf
[program:bobo1]
command=/usr/local/python3/bin/uwsgi /usr/local/nginx/conf/uwsgi2.ini
directory=/usr/local/nginx/conf/
startsecs=0
stopwaitsecs=0
autostart=true
autorestart=true
重启supervisor
(supervisor) [root@web-node supervisor]# ps aux | grep supervisord
root 5177 0.0 0.0 112704 972 pts/1 S+ 11:47 0:00 grep --color=auto supervisord
(supervisor) [root@web-node supervisor]# systemctl start supervisord
(supervisor) [root@web-node supervisor]# ps aux | grep supervisord
root 5218 0.0 0.1 217568 14104 ? Ss 11:47 0:00 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/python2.7 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisord -c /etc/supervisord.conf
root 5253 0.0 0.0 112704 972 pts/1 S+ 11:47 0:00 grep --color=auto supervisord
(supervisor) [root@web-node supervisor]# systemctl status supervisord
● supervisord.service - Process Monitoring and Control Daemon
Loaded: loaded (/usr/lib/systemd/system/supervisord.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2018-12-13 13:35:46 CST; 26s ago
Process: 11883 ExecStop=/root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisorctl shutdown (code=exited, status=0/SUCCESS)
Process: 12681 ExecStart=/root/.pyenv/versions/2.7.13/envs/supervisor/bin/supervisord -c /etc/supervisord.conf (code=exited, status=0/SUCCESS)
Main PID: 12684 (supervisord)
CGroup: /system.slice/supervisord.service
├─12684 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/python2.7 /root/.pyenv/versions/2.7.13/envs/supervisor/bin/superv...
├─12717 /usr/local/python3/bin/uwsgi /usr/local/nginx/conf/uwsgi1.ini
├─12718 /usr/local/python3/bin/uwsgi /usr/local/nginx/conf/uwsgi2.ini
├─12721 /usr/local/python3/bin/uwsgi /usr/local/nginx/conf/uwsgi1.ini
├─12722 /usr/local/python3/bin/uwsgi /usr/local/nginx/conf/uwsgi1.ini
├─12723 /usr/local/python3/bin/uwsgi /usr/local/nginx/conf/uwsgi2.ini
└─12724 /usr/local/python3/bin/uwsgi /usr/local/nginx/conf/uwsgi2.ini
Dec 13 13:35:46 web-node systemd[1]: Starting Process Monitoring and Control Daemon...
Dec 13 13:35:46 web-node systemd[1]: Started Process Monitoring and Control Daemon.
Warning: supervisord.service changed on disk. Run 'systemctl daemon-reload' to reload units.
(supervisor) [root@web-node supervisor]# lsof -i:8001
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
uwsgi 5244 root 3u IPv4 70530592 0t0 TCP *:vcom-tunnel (LISTEN)
uwsgi 5250 root 3u IPv4 70530592 0t0 TCP *:vcom-tunnel (LISTEN)
uwsgi 5251 root 3u IPv4 70530592 0t0 TCP *:vcom-tunnel (LISTEN)
(supervisor) [root@web-node supervisor]# lsof -i:8002
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
uwsgi 5245 root 3u IPv4 70531513 0t0 TCP *:teradataordbms (LISTEN)
uwsgi 5248 root 3u IPv4 70531513 0t0 TCP *:teradataordbms (LISTEN)
uwsgi 5249 root 3u IPv4 70531513 0t0 TCP *:teradataordbms (LISTEN)
========================================================
附带温馨提示
直接重启supervisor项目bobo和项目bobo1的命令
(supervisor) [root@web-node supervisor]# supervisorctl -c /etc/supervisord.conf restart bobo
bobo: stopped
bobo: started
(supervisor) [root@web-node supervisor]# supervisorctl -c /etc/supervisord.conf restart bobo1
bobo1: stopped
bobo1: started
========================================================
上面在nginx中vhosts/ng.conf文件中配置的转发关系不用修改.
需要知道的事: 此时django项目中的的静态资源并不是通过uwsgi获取, 而是通过nginx直接获取的(匹配static的path路径访问静态资源)
此时输入http://www.kevin.com, 即可访问django的web项目!
最后退出supervisor环境
(supervisor) [root@web-node supervisor]# source deactivate
pyenv-virtualenv: deactivate 2.7.13/envs/supervisor
[root@web-node supervisor]#
退出supervisor环境后, uwsgi守护进程并没有受到影响。
再次进入supervisor环境
[root@web-node supervisor]# source activate supervisor
pyenv-virtualenv: activate supervisor
pyenv-virtualenv: prompt changing will be removed from future release. configure `export PYENV_VIRTUALENV_DISABLE_PROMPT=1' to simulate the behavior.
(supervisor) [root@web-node supervisor]#
*************** 当你发现自己的才华撑不起野心时，就请安静下来学习吧！***************
