tomcat之负载均衡(apache反响代理tomcat)
……………………
proxy_module (shared)
proxy_balancer_module (shared)
proxy_ftp_module (shared)
proxy_http_module (shared)
proxy_connect_module (shared)
前端apache配置内容-->192.168.9.130
ProxyVia On
ProxyRequests Off
ProxyPreserveHost On
<Proxy balancer://lbcluster>
BalancerMember http://192.168.6.128:80 loadfactor=1
BalancerMember http://192.168.6.129:80 loadfactor=1
#设定负载均衡算法(byrequests基于权重,类似haproxy的roundrobin)(bybusiness基于当前负载情况,类似于haproxy的leastconn最少连接)(bytraffic基于后端流量)
ProxySet lbmethod=byrequests
</Proxy>
#如果访问的是http://ip/lbmanager,则不代理,balancer-manager可以保留代理状态信息
<Location /lbmanager>
#强制所有匹配的文件被一个指定的处理器处理
SetHandler balancer-manager
Proxypass !
Order Deny,Allow
Allow from all
</Location>
#代理集群
#代理(这里代理后的路径最后有个/,一定不能省略)
ProxyPass / balancer://lbcluster/
#作用在于原请求之后追加上redirect的路径
ProxyPassReverse / balancer://lbcluster/
#2.2控制机制,2.4使用Require all granted
<Location * >
Order allow,deny
Allow from all
</Location>
<Location / >
Order allow,deny
Allow from all
</Location>
connectionTimeout="20000"
redirectPort="8443" />
<Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/>
<Channel className="org.apache.catalina.tribes.group.GroupChannel">
<Membership className="org.apache.catalina.tribes.membership.McastService" address="224.0.0.4" port="45564" frequency="500" dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="192.168.6.128" port="4000" autoBind="100" selectorTimeout="5000" maxThreads="6"/>
<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
<Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
</Sender>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
</Channel>
<Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/>
<Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
<!-- <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/> -->
<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
</Cluster>
<html>
<head><title>TomcatA</title></head>
<body>
<h1><font color="red">TomcatA </font></h1>
<table align="centre" border="1">
<tr>
<td>Session ID</td>
<% session.setAttribute("abc","abc"); %>
<td><%= session.getId() %></td>
</tr>
<tr>
<td>Created on</td>
<td><%= session.getCreationTime() %></td>
</tr>
</table>
</body>
</html>
<Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/>
<Channel className="org.apache.catalina.tribes.group.GroupChannel">
<Membership className="org.apache.catalina.tribes.membership.McastService" address="224.0.0.4" port="45564" frequency="500" dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="192.168.6.129" port="4001" autoBind="100" selectorTimeout="5000" maxThreads="6"/>
<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
<Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
</Sender>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
</Channel>
<Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/>
<Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
<!-- <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/> -->
<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
</Cluster>
<html>
<head><title>TomcatB</title></head>
<body>
<h1><font color="blue">TomcatB </font></h1>
<table align="centre" border="1">
<tr>
<td>Session ID</td>
<% session.setAttribute("abc","abc"); %>
<td><%= session.getId() %></td>
</tr>
<tr>
<td>Created on</td>
<td><%= session.getCreationTime() %></td>
</tr>
</table>
</body>
</html>
说实话,我做到最后会话不知为什么不能保持,日志中已经互相检测到,但是会话疑似没有复制,这个(暂留)
Deployer className选项可能会造成以下错误
如果配置完毕后,发现不能启动tomcat,则需要将组播地址添加到路由里,并添加到/etc/crontabJkWorkersFile /etc/httpd/extra/workers.properties
JkLogFile logs/mod_jk.log
JkLogLevel debug
#访问根下的任意文件,都转到集群1上
JkMount /* lbcluster1
#访问根下的jkstatus,都转到stat1上
JkMount /jkstatus/ stat1
#实例类型
worker.TomcatA.type = ajp13
#实例内定义的虚拟主机的访问ip
worker.TomcatA.host = ...
#实例与连接器之间的端口
worker.TomcatA.port =
#实例权重
worker.TomcatA.lbfactor =
worker.TomcatB.type = ajp13
worker.TomcatB.host = ...
worker.TomcatB.port =
worker.TomcatB.lbfactor =
#集群类型
worker.lbcluster1.type = lb
#会话绑定
worker.lbcluster1.sticky_session =
#调度方法
worker.lbcluster1.method = R
#集群里含有的实例
worker.lbcluster1.balance_workers = TomcatA, TomcatB
worker.stat1.type = status
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