全部系统采用centos7.1
各节点配置好hosts文件
cat /etc/hosts
172.16.92.2 node2.centos7.com node2
172.16.92.3 node3.centos7.com node3
172.16.92.4 node4.centos7.com node4
node2, node3 --> tomcat ( jsp网站服务器 )
node4 --> httpd(proxy_http_module) 反向代理至tomcat
================ node2 172.16.92.2/16 ===================
安装JDK(光盘源)
mount /dev/cdrom /mnt/cdrom/
yum -y install java-1.7.0-openjdk
安装二进制tomcat
wget http://archive.apache.org/dist/tomcat/tomcat-8/v8.0.23/bin/apache-tomcat-8.0.23.tar.gz
tar xf apache-tomcat-8.0.23.tar.gz -C /usr/local
cd /usr/local
ln -sv apache-tomcat-8.0.23 tomcat
vim /etc/profile.d/tomcat.sh
(:set paste)
export CATALINA_HOME=/usr/local/tomcat
export PATH=$PATH:$CATALINA_HOME/bin
================
. /etc/profile.d/tomcat.sh
catalina.sh --help
catalina.sh version
catalina.sh start
windows浏览器访问 http://172.16.92.2:8080/ 能看到tomcat首页即可
catalina.sh stop
mkdir -pv /data/webapps/ROOT
cd tomcat/conf
cp server.xml{,.bak}
vim server.xml
#添加虚拟主机
<Engine name="Catalina" defaultHost="node2.centos7.com"> #修改
:set nu
:123,139y -> p -> 修改成如下
<Host name="node2.centos7.com" appBase="/data/webapps"
unpackWARs="true" autoDeploy="true">
<Context path="" docBase="/data/webapps/ROOT" />
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="/data/logs"
prefix="tomcatA_access_log" suffix=".txt"
pattern="%h %l %u %t &quot;%r&quot; %s %b" />
</Host>
==============
mkdir /data/logs
catalina.sh configtest
>全部都是INFO开头的就正常了
(难道是把jar放在 /data/webapps/ROOT/lib 下?)
mkdir -pv /data/webapps/ROOT/{lib,classes,META-INF,WEB-INF}
vim /data/webapps/ROOT/index.jsp
<%@ page language="java" %>
<html>
<head><title>TomcatA</title></head>
<body>
<h1><font color="red">TomcatA.centos7.com</font></h1>
<table align="centre" border="1">
<tr>
<td>Session ID</td>
<% session.setAttribute("centos7.com","centos7.com"); %>
<td><%= session.getId() %></td>
</tr>
<td>Created on</td>
<td><%= session.getCreationTime() %></td>
</tr>
</table>
</body>
</html>
ss -tnal | grep 8080
windows 浏览器访问 http://172.16.92.2:8080/
--------------------------------------------------------------------
TomcatA.centos7.com
Session ID D9D258F305C067821340427EEC9BDE25
Created on 1446019812559
================ node3 172.16.92.3/16 ===================
安装tomcat
scp node2:/root/apache-tomcat-8.0.23.tar.gz ./
scp node2:/etc/profile.d/tomcat.sh /etc/profile.d/
windows浏览器访问 http://172.16.92.3:8080/
能看到tomcat首页即可
cd /usr/local/tomcat/conf/
scp node2:/usr/local/tomcat/conf/server.xml ./
<Engine name="Catalina" defaultHost="node3.centos7.com"> #修改
<Host name="node3.centos7.com" appBase="/data/webapps" autoDeploy="true"> #修改
prefix="tomcatB_access_log" suffix=".txt" #修改
=================
<head><title>TomcatB</title></head>
<h1><font color="blue">TomcatB.centos7.com</font></h1>
<% session.setAttribute("centos7.com","centos7.com"); %>
</tr> </table>
==========
>全部都是INFO开头的就是正常了
windows 浏览器访问 http://172.16.92.3:8080/
(第一次访问时间会比较长)
-----------------------------------------------------------------------
TomcatB.centos7.com
Session ID AD6C6BE89A883FC0C2D881CABC9ABD9C
Created on 1446021071150
================ node4 172.16.92.4/16 ===================
apache做tomcat反向代理方式一 --- proxy_http_module
(光盘yum源)
mount /dev/cdrom /mnt/cdrom
yum -y install httpd
httpd -M | grep proxy_http_module
vim /etc/httpd/conf/httpd.conf
ServerName node4.centos7.com:80 #去注释并更改
#DocumentRoot "/var/www/html" #注释中心主机
========================
vim /etc/httpd/conf.d/vhosts_http.conf
<proxy balancer://lbcluster1>
BalancerMember http://172.16.92.2:8080 loadfactor=10 route=TomcatA
BalancerMember http://172.16.92.3:8080 loadfactor=10 route=TomcatB
</proxy>
<VirtualHost *:80>
ServerName tomcat.centos7.com
ProxyVia On
ProxyRequests Off
ProxyPreserveHost On
<Proxy *>
Require all granted
</Proxy>
ProxyPass / balancer://lbcluster1/
ProxyPassReverse / balancer://lbcluster1/
<Location />
</Location>
</VirtualHost>
====================
httpd -t
systemctl start httpd.service
ss -tanlp | grep 80
windows浏览器访问 http://172.16.92.4/index.jsp ,在如下两个网页轮询
--------------------------------------------------------------------------------
Session ID DACF1B67D1F06A4F1181696C6F36B226
Created on 1446021532446
Session ID FBCF88D46F56EC8DD7153095C16A08BF
Created on 1446021537042
apache基于session实现会话绑定
#添加第一行和第五行
Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED
BalancerMember http://172.16.92.2:8080 loadfactor=10 route=TomcatA
BalancerMember http://172.16.92.3:8080 loadfactor=10 route=TomcatB
ProxySet stickysession=ROUTEID
<VirtualHost *:80> #此容器内的保持不变
......
最终修改后结果如下:
ProxySet stickysession=ROUTEID
systemctl reload httpd
windows浏览器访问 http://172.16.92.4/index.jsp, 绑定在如下页面了
Session ID C69703CAD1B76C003EBDD33B2C744A25
Created on 1446021766794
#####################################
apache状态管理页
...... #内容一样滴
.......
<Location /balancer-manager> #添加此段
SetHandler balancer-manager
Proxypass !
Require all granted #允许所有的客户端访问
#Require ip 172.16.249.102 #只允许172.16.249.102访问
</Location>
<Location /balancer-manager>
SetHandler balancer-manager
Proxypass !
Require all granted
#Require ip 172.16.249.102
</Location>
systemctl reload httpd.service
windows浏览器访问 http://172.16.92.4/balancer-manager, 出现如下页面,则说明成功!
>Load Balancer Manager for 172.16.92.4
>Server Version: Apache/2.4.6 (CentOS) OpenSSL/1.0.1e-fips mod_fcgid/2.3.9
>Server Built: Mar 12 2015 15:07:19
>......
基于此页面可做网站应用的各项设置和上下线操作, 实现灰度发布.
本文转自 zhuhc1988 51CTO博客，原文链接：http://blog.51cto.com/changeflyhigh/1707493，如需转载请自行联系原作者
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