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conf_web's Introduction

Conf_Web 配置管理平台

环境:

CentOS 6/7 x64
Python:  2.7.6
Etcd: 3.2.18
Confd:  0.16.0
Nginx: 1.12.1

优化功能: 可选择上级项目目录,进行下级项目目录创建

效果演示

image

一.拓扑图:

image

二.涉及软件

etcd:分布式KV存储系统,一般用于共享配置和服务注册与发现。是CoreOS公司发起的一个开源项目。 ETCD存储格式类似于文件系统,以根"/"开始下面一级级目录,最后一个是Key,一个key对应一个Value。
etcd集群:使用Raft协议保证每个节点数据一致,由多个节点对外提供服务。这里只用单台。

confd:管理本地应用配置文件,使用etcd或consul存储的数据渲染模板,还支持redis、zookeeper等。
confd有一个watch功能,通过HTTP API定期监测对应的etcd中目录变化,获取最新的Value,然后渲染模板
Nginx:  Nginx是一款轻量级的Web服务器/反向代理服务器以及电子邮件代理服务器,并在一个BSD-like协议下发行。由俄罗斯的程序设计师lgor Sysoev所开发,供俄国大型的入口网站及搜索引擎Rambler使用。其特点是占有内存少,并发能力强,事实上nginx的并发能力确实在同类型的网页服务器中表现较好。

三.软件部署

环境说明:  建议使用 Cento7.X  X64

1)安装etcd(这里安装的单机,集群环境根据自己的需求选取)

	# yum install etcd -y
	# sed -i  's/localhost/0.0.0.0/g'  /etc/etcd/etcd.conf  #配置监听地址
	# systemctl   start  etcd  &&  systemctl  enable  etcd  #启动服务设置开机动

2)安装nginx
	#yum install  python-devel gcc gcc-c++ pcre  pcre-devel   patch   unzip   zlib  zlib-devel  openssl openssl-devel  git  -y  #依赖包
	#cd  /usr/local/src
	#wget  http://nginx.org/download/nginx-1.12.1.tar.gz
	#git clone https://github.com/yaoweibin/nginx_upstream_check_module.git  
	#tar  -zxvf  nginx-1.12.1.tar.gz 
	#cd nginx-1.12.1
	#patch  -p1 </usr/local/src/nginx_upstream_check_module/check_1.12.1+.patch
	#./configure   --prefix=/usr/local/nginx --add-module=/usr/local/src/nginx_upstream_check_module/
	# make -j4 && make install
	#mkdir  /usr/local/nginx/conf/vhost/
	Nginx主配置文件修改为这个样子,增加include目录配置
	#vi  /usr/local/nginx/conf/nginx.conf
	
	
		#user  nobody;
		worker_processes  1;

		#error_log  logs/error.log;
		#error_log  logs/error.log  notice;
		#error_log  logs/error.log  info;

		#pid        logs/nginx.pid;


		events {
			worker_connections  1024;
		}


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

			#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;
			#tcp_nopush     on;

			#keepalive_timeout  0;
			keepalive_timeout  65;

			#gzip  on;

		include   vhost/*.conf;
		}

3)安装confd		
			
			下载地址https://github.com/kelseyhightower/confd/releases
			下载完毕丢到系统里面
			# cp confd  /usr/bin/confd 
			# which  confd
			/usr/bin/confd

4)创建配置文件目录

			# mkdir -p /etc/confd/{conf.d,templates}
			conf.d          # 资源模板,下面文件必须以toml后缀
			templates       # 配置文件模板,下面文件必须以tmpl后缀



5)创建confd配置文件

		# vi /etc/confd/conf.d/app01.conf.toml

		[template]
		src = "app01.conf.tmpl"                              #默认在/etc/confd/templates目录下
		dest = "/usr/local/nginx/conf/vhost/app01.conf"      #要更新的配置文件
		keys = [
		   "/Shopping",                                      #监测的key
		]
		reload_cmd ="/usr/local/nginx/sbin/nginx -s reload"   #最后执行的命令



6)创建confd模板

		# vi  /etc/confd/templates/app01.conf.tmpl 
		
		upstream {{getv "/Shopping/nginx/cluster1/proxy_name"}} {
			{{range getvs "/Shopping/nginx/cluster1/upstream/*"}}
				server {{.}};
			{{end}}

		  check interval=5000 rise=1 fall=5 timeout=4000 type=http;
		  check_http_send "HEAD / HTTP/1.0\r\n\r\n";
		  check_http_expect_alive http_2xx http_3xx;

		}
		  
		server {
		   server_name   {{range getvs "/Shopping/nginx/cluster1/server_name/*"}} {{.}} {{end}};
		   location / {
			   proxy_pass        http://{{getv  "/Shopping/nginx/cluster1/proxy_name"}};
			   proxy_redirect off;
			   proxy_set_header Host $host;
			   proxy_set_header X-Real-IP $remote_addr;
			   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			}
			  location /status {
						check_status;
						access_log   off;
				   }
		}


7)启动confd并设置开机启动

		开机启动脚本会随文档附带
		拷贝至/etc/init.d/confd ,只需要更改etcd 的连接地址即可
		#/etc/init.d/confd  start  && chkconfig  --add  confd  && chkconfig  confd on 

四.配置平台部署

1)Github 克隆平台代码安装平台依赖

	# git  clone  https://github.com/1032231418/Conf_Web.git
	# cd Conf_Web/ospweb/
	#yum install python-pip -y         #安装pip
	#mkdir   /root/.pip/               #创建pip源配置文件目录
	# vi  /root/.pip/pip.conf          #修改为阿里云的pip源
	
		[global]
		trusted-host=mirrors.aliyun.com
		index-url=http://mirrors.aliyun.com/pypi/simple/
		[list]
		format=columns
		
	#pip install   virtualenv          #安装沙盒工具
	#virtualenv   env                  #建议创建一个沙盒环境跑该平台
	# source  env/bin/activate         #使用沙盒环境
	# pip install -r requirement.txt   #安装相关软件
	
2)创建数据库并将表刷入数据库
	#  mysql  -p          #登录数据库为平台创建一个数据库
	#CREATE DATABASE  opsweb   CHARACTER SET utf8 COLLATE utf8_general_ci;      #创建数据库opsweb
	
	# vi opsweb/settings.py   #这里数据库信息改为自己的数据库信息
			DATABASES = {
				  'default': {
					'ENGINE': 'django.db.backends.mysql',
					'NAME': 'opsweb',
					'HOST': 'localhost',
					'USER': 'root',
					'PASSWORD': '123456',
					'PORT': 3306,
				}
			}
			
			ETCD_Server = "192.168.0.221"        #这里改为自己etcd 的ip地址
			ETCD_Port = 2379
			
	# python manage.py   migrate          #提交迁移文件至数据库,将表刷入数据库

3)创建超级管理员账号

    # python manage.py    createsuperuser


4)运行平台

	# python manage.py  runserver 0:8000
	访问地址就是 http://ip:8000   账号密码就是上一步创建的超级管理员账号密码


5)登录平台为nginx创建key/value  

	例子:  Shopping 平台为例
	
		项目创建:
			1.创建商城项目  /Shopping
			2.创建商城项目里面的 /Shopping/nginx   nginx 服务
			3.创建nginx 集群目录  /Shopping/nginx/cluster1
			4.给我们的商城nginx集群1项目创建配置文件
			5.域名 和 节点名称可能是多个,这里我们需要创建目录 /Shopping/nginx/cluster1/server_name 和 /Shopping/nginx/cluster1/upstream

image

etcd 里面存储的值

image

		配置创建:
			1.反向代理        /Shopping/nginx/cluster1/proxy_name  
			2.绑定一个域名     /Shopping/nginx/cluster1/server_name/1	
			3.创建一个集群节点 /Shopping/nginx/cluster1/upstream/web1	

image

etcd 里面存储的值

image

生成的配置文件

image

通过hosts 文件我们可以查看节点状态(虽然这个节点不是up 状态但是由此可见,我们可以动态添加节点)

image

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