一、安装HAProxy
1.进入home目录，下载最新haproxy安装包。
cd /home
wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.24.tar.gz
2.解压：
tar -zxvf haproxy-1.4.24.tar.gz
重命名为haproxy
mv haproxy-1.4.24.tar.gz haproxy
创建目录/usr/local/haproxy
mkdir /usr/local/haproxy
3.安装
cd haproxy
make TARGET=linux26 PREFIX=/usr/local/haproxy
make install PREFIX=/usr/local/haproxy
cd /usr/local/haproxy
mkdir /usr/local/haproxy/conf
cp /home/haproxy/examples/haproxy.cfg /home/haproxy/haproxy/conf/
4.修改配置
vi /usr/local/haproxy/conf/haproxy.cfg
如图:
内容:
# this config needs haproxy-1.1.28 or haproxy-1.2.1 global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
#log loghost local0 info
maxconn 4096
chroot /usr/share/haproxy
uid 99
gid 99
daemon
#debug
#quiet defaults
log global
mode http
option httplog
option dontlognull
retries 3
option redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000 listen web
bind *:8666
mode http
balance roundrobin
stats uri /haproxy-stats
stats refresh 10s
stats realm Haproxy\ statistics
stats auth admin:admin
option httpchk HEAD /index.html
server web1 127.0.0.1:8080 weight 1 maxconn 10000 check inter 3s rise 3 fall 3
server web2 127.0.0.1:8081 weight 1 maxconn 10000 check inter 3s rise 3 fall 3
server web3 127.0.0.1:8082 weight 1 maxconn 10000 check inter 3s rise 3 fall 3
二、tomcat服务的集群和session共享参考:
nginx+tomcat实现负载均衡以及session共享(linux centos7环境)(第二点)
三、3个tomcat配置完成并启动好以后,启动haproxy
./usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/conf/haproxy.cfg
关闭haproxy命令为：
killall haproxy