下载tomcat
#wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.0.36/bin/apache-tomcat-8.0.36.tar.gz
安装
#tar -zxvf apache-tomcat-8.0.36.tar.gz
下载jdk1.8:
首先查找是否已经安装
#rpm -qa | grep jdk
如果显示为空,则表示没有安装jdk
#wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept- securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.rpm
加粗的地址,根据需求选择自己的jdk版本
安装jdk
#rpm -ivh jdk-8u91-linux-x64.rpm
安装在/usr/java/
在/etc/profile 配置环境变量
下载haproxy
#wget haproxy-1.5.4-3.el6.x86_64.rpm
安装
#rpm -ivh haproxy-1.5.4-3.el6.x86_64.rpm
先备份haproxy的配置文件
# cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.back
#vim /etc/haproxy/haproxy.cfg
global
log 127.0.0.1 local2 #使用本机 syslog服务的local2 设备记录错误信息chroot /var/lib/haproxy #当前工作目录
pidfile /var/run/haproxy.pid #定义haproxy的pid maxconn 4000 #最大并发连接数 user haproxy #haproxy 的用户 group haproxy #haproxy 的组 daemon #后台方式运行 # turn on stats unix socket stats socket /var/lib/haproxy/stats#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will # use if not designated in their block #--------------------------------------------------------------------- defaults mode http #mode{http|tcp|health} 运行模式或协议 http是七层模式,tcp是四层模式,health是健康监测 返回ok log global option httplog option dontlognull option http-server-close option forwardfor except 127.0.0.0/8 option redispatch retries 3 timeout http-request 10s #请求超时时间 timeout queue 1m timeout connect 10s #连接超时时间 timeout client 1m #客户端超时 timeout server 1m #服务器超时 timeout http-keep-alive 10s timeout check 10s maxconn 3000 #最大连接数量stats uri /haproxy_status #监控页面地址
#---------------------------------------------------------------------
# main frontend which proxys to the backends #--------------------------------------------------------------------- frontend main *:5000 #监听端口 5000 acl url_static path_beg -i /static /images /javascript /stylesheets acl url_static path_end -i .jpg .gif .png .css .jsuse_backend static if url_static
default_backend app#---------------------------------------------------------------------
# static backend for serving up images, stylesheets and such #--------------------------------------------------------------------- backend static balance roundrobin server static 127.0.0.1:4331 check#---------------------------------------------------------------------
# round robin balancing between the various backends #--------------------------------------------------------------------- backend app balance roundrobin server app1 127.0.0.1:8080 check server app2 127.0.0.1:5002 check server app3 127.0.0.1:5003 check server app4 127.0.0.1:5004 check
配置完
重新加载HAProxy的配置文件
/etc/init.d/harpoxy reload
启动Haproxy, 启动命令如下所示:
haproxy -f /etc/haproxy/haproxy.cfg开启tomcat
#./startup.sh
输入网址,显示
输入网址,显示出如下。
可以看到app1已经启动了,显示绿色
也可以根据命令看是否启动
# ps -ef | grep haproxy
haproxy 3725 1 0 12:28 ? 00:00:01 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 3648 haproxy 4572 1 0 14:14 ? 00:00:00 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 4562 haproxy 4586 1 0 14:18 ? 00:00:00 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 4574 haproxy 4588 1 0 14:18 ? 00:00:00 haproxy -f /etc/haproxy/haproxy.cfg root 4594 4352 0 14:25 pts/1 00:00:00 grep haproxy停止haproxy
killall haproxy