一,实验介绍
利用三台centos7虚拟机搭建简单的nginx反向代理负载集群,
三台虚拟机地址及功能介绍
192.168.2.76 nginx负载均衡器
192.168.2.82 web01服务器
192.168.2.78 web02服务器
二,安装nginx软件(以下操作三台虚拟机都要进行)
1,安装依赖软件包命令集合
yum -y install openssl openssl-devel pcre pcre-devel gcc
2,安装nginx软件包命令集合
mkdir /app cd /app wget -q http://nginx.org/download/nginx-1.6.3.tar.gz useradd -s /sbin/nologin -M nginx
id nginx
tar xf nginx-1.6.3.tar.gz cd nginx-1.6.3 ./configure --user=nginx --group=nginx --prefix=/app/nginx --with-http_stub_status_module --with-http_ssl_module make && make install
有些Centos 7.6里面没有安装wget命令,所以要自己安装:
yum -y install wget
三,配置文件
1,(以下操作在web01和web02上进行)
vim /app/nginx/conf/nginx.conf
将配置文件修改为以下内容
worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "http_referer" ' '"$http_user_agent" " $http_x_forwarded_for"'; server { listen 80; server_name bbs.dengchuanghai.org; location / { root html/bbs; index index.html index.htm; } access_log logs/access_bbs.log main; }
对照上面的把注释去掉。
然后保存退出,在输入一下内容:
web1服务器:
mkdir /app/nginx/html/bbs echo "192.168.2.82 bbs" >>/app/nginx/html/bbs/index.html echo "192.168.2.82 bbs.dengchuanghai.org" >> /etc/hosts
web2服务器:
echo "192.168.2.78 bbs" >>/app/nginx/html/bbs/index.html echo "192.168.2.78 bbs.dengchuanghai.org" >> /etc/hosts
然后分别启动nginx
/app/nginx/sbin/nginx -t (检查配置文件有无错误) /app/nginx/sbin/nginx 启动 ss -tnlp | grep 80
2,以下操作在nginx负载均衡器上进行
vim /app/nginx/conf/nginx.conf
有些Centos 7.6 没有安装vim命令,需要自己安装:
yum -y install vim-enhanced
更改为如下内容
worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; upstream www_server_pools{ server 192.168.1.190:80 weight=1; server 192.168.1.189:80 weight=1; } server { listen 80; server_name www.dengchuanghai.org; location / { proxy_pass http://www_server_pools; } } }
保存并退出:
echo "192.168.1.188 www.dengchuanghai,org" >> /etc/hosts
检查语法
/app/nginx/sbin/nginx -t
启动服务
/app/nginx/sbin/nginx
在外部浏览器输入你的代理服务器IP;