上周小编发布的一篇关于CentOS7配置的文章，有很多小伙伴都收藏了，想必是对大家很有帮助，那么今天网盾科技再给大家分享一篇关于Keepalived + Nginx 实现高可用 Web 负载均衡的文章，小白必看哟！ 一、Keepalived 简要介绍 Keepalived 是一种高性能的服务器高可用或热备解决方案， Keepalived 可以用来防止服务器单点故障的发生，通过配合 Nginx 可以实现 web 前端服务的高可用。  二、系统和软件准备 CentOS 6.5 x64
keepalived-1.2.18.tar.gz
nginx-1.13.0.tar.g 三、安装Nginx 1.安装编译 Nginx 所需的依赖包 [root@wangdun1 ~]# yum install gcc gcc-c++ make automake autoconf libtool pcre pcre-devel zlib zlib-devel openssl openssl-devel 2．下载Nginx [root@wangdun1 ~]# cd /usr/local/src/ [root@wangdun1 src]# wget http://nginx.org/download/nginx-1.13.0.tar.gz  3．编译安装 Nginx [root@wangdun1]# tar -zxvf nginx-1.13.0.tar.gz [root@wangdun1]# cd nginx-1.13.0 [root@wangdun1]#./configure --prefix=/usr/local/nginx [root@wangdun1]# make && make install 4.配置 Nginx [root@wangdun1 ~]# vim /usr/local/nginx/conf/nginx.conf  修改 两个节点Nginx 首页内容： [root@wangdun1 ~]# vim /usr/local/nginx/html/index.html   5.系统防火墙打开端口 88   6.测试 Nginx 是否安装成功  7.启动 Nginx [root@wangdun1 ~]# /usr/local/nginx/sbin/nginx 重启 Nginx [root@wangdun1 ~]# /usr/local/nginx/sbin/nginx -s reload 8.设置 Nginx 开机启动  9.分别访问两个 Nginx   class="ztext-empty-paragraph">
四、安装 Keepalived 1．上传keepalived 上传keepalived-1.2.18.tar.gz 到 /usr/local/src 目录 2．解压安装 [root@wangdun1 ~]# cd /usr/local/src [root@wangdun1 ~]# tar -zxvf keepalived-1.2.18.tar.gz [root@wangdun1 ~]# cd keepalived-1.2.18 [root@wangdun1 ~]#./configure --prefix=/usr/local/keepalived [root@wangdun1 ~]# make && make install 3.将 keepalived 设置为系统服务 因为没有使用 keepalived 的默认路径安装（默认是/usr/local） ,安装完成之后，需要做一些工作复制默认配置文件到默认路径 [root@wangdun1 ~]# mkdir /etc/keepalived [root@wangdun1 ~]# cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/ [root@wangdun1 ~]# cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/ [root@wangdun1 ~]# cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/ [root@wangdun1 ~]# ln -s /usr/local/sbin/keepalived /usr/sbin/ [root@wangdun1 ~]# ln -s /usr/local/keepalived/sbin/keepalived /sbin/ 设置 keepalived 服务开机启动 [root@wangdun1 ~]# chkconfig keepalived on 4.修改 Keepalived 配置文件 (1) MASTER 节点配置文件（192.168.2.5）  (2)BACKUP 节点配置文件（192.168.2.6） 经过上面的讲解，相信大家对Keepalived + Nginx 实现高可用 Web 负载均衡有了基本的了解，想知道更多全面的内容，请关注我们。我们15年专注互联网IDC服务，在网盾可以找到你们想要的服务器知识！
|