一、实验环境
主机：四台 CentOS7系统的虚拟机，node1(192.168.27.7)，node2(192.168.27.17)，VIP(192.168.27.100)，web1(192.168.27.27)，web2(192.168.27.37)
软件：haproxy-1.8.20.tar.gz，keepalived（光盘yum源），httpd（光盘yum源）
二、实验步骤
1、安装haproxy
两台主机都源码安装haproxy-1.8.20.tar.gz，都两台主机操作一样，以下为node1的操作
[root@node1 ~]# ll haproxy-1.8.20.tar.gz -rw-r--r-- 1 root root 2083917 Jan 10 20:39 haproxy-1.8.20.tar.gz #安装依赖包 [root@node1 ~]# yum install -y gcc gcc-c++ pcre pcre-devel openssl openssl-devel systemd-devel #开始编译安装 [root@node1 ~]# tar xf haproxy-1.8.20.tar.gz [root@node1 ~]# cd haproxy-1.8.20/ [root@node1 haproxy-1.8.20]# make ARCH=x86_64 TARGET=linux2628 USE_PCRE=1 USE_OPENSSL=1 USE_ZLIB=1 USE_SYSTEMD=1 USE_CPU_AFFINITY=1 PREFIX=/usr/local/haproxy [root@node1 haproxy-1.8.20]# make install PREFIX=/usr/local/haproxy [root@node1 haproxy-1.8.20]# cp haproxy /usr/sbin/ #准备启动文件 [root@node1 haproxy-1.8.20]# vim /usr/lib/systemd/system/haproxy.service [Unit] Description=HAProxy Load Balancer After=syslog.target network.target [Service] ExecStartPre=/usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c -q ExecStart=/usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /usr/local/haproxy/run/haproxy.pid ExecReload=/bin/kill -USR2 $MAINPID [Install] WantedBy=multi-user.target #创建用户与配置文件 [root@node1 haproxy-1.8.20]# useradd -r -s /sbin/nologin haproxy [root@node1 haproxy-1.8.20]# mkdir /etc/haproxy [root@node1 haproxy-1.8.20]# mkdir /usr/local/haproxy/run [root@node1 haproxy-1.8.20]# mkdir /var/lib/haproxy [root@node1 haproxy-1.8.20]# chown -R haproxy:haproxy /var/lib/haproxy/ [root@node1 haproxy-1.8.20]# vim /etc/haproxy/haproxy.cfg
[root@node1 haproxy-1.8.20]# cat /etc/haproxy/haproxy.cfg global maxconn 100000 chroot /usr/local/haproxy #stats socket /var/lib/haproxy/haproxy.sock mode 600 level admin #uid 981 #gid 981 user haproxy group haproxy daemon #nbproc 4 #cpu-map 1 0 #cpu-map 2 1 #cpu-map 3 2 #cpu-map 4 3 pidfile /usr/local/haproxy/run/haproxy.pid log 127.0.0.1 local3 info defaults option http-keep-alive option forwardfor maxconn 100000 mode http timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen stats mode http bind 192.168.27.7:9999 stats enable log global stats uri /haproxy-status stats auth haadmin:q1w2e3r4ys listen web_port bind 192.168.27.100:80 #此处为VIP mode http log global server web1 192.168.27.27:80 check inter 3000 fall 2 rise 5 #后端服务器 server web1 192.168.27.37:80 check inter 3000 fall 2 rise 5 #后端服务器