集群负载配置

lyn1984 · 发表于 2010/6/1 10:48:54

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关键字: liferay集群负载均衡配置

先介绍一下项目系统的环境，

Liferay Version: 5.2.2
两台硬件服务器，一台WINXP（M1）,一台linux（M2）,用Virtualbox在M2上虚拟了两个linux分别叫M3,M4
DB Mysql: JCR(JackRabbit DB), Portal(Liferay DB) 放在M1上
Web Server: Solr Server 搜索引擎Server在M1上
Liferay Tomcat 两个，分别放在M3,M4
Http Server: Apache Server 2.2.14 放在M2

Liferay的集群配置其实在他的liferay-administration-guide文档第五章，对性能优化也有介绍，附件是在网上找的一个翻译好的中文文档，写的很不错
然后还参照了Lifreay官方网站Wiki上面的一些文章，http://www.liferay.com/web/guest/community/wiki/-/wiki/Main/Clustering

文档里有的部分我就不说了，说一下他没有提到的地方
一、JackRibbit集群按文档上做，然后在portal-ext.properties里面加上下面代码：
######################jackrabbit configuration###################################
dl.hook.impl=com.liferay.documentlibrary.util.JCRHook

二、Solr配置的时候也没有问题，但是在search user & document会报错，解决方案如下
修改com.liferay.portal.search.lucene.LuceneUtil的addRequiredTerm如下：

Java代码 [/url]

public static void addRequiredTerm(
BooleanQuery booleanQuery, String field, String value, boolean like) {
if (like) {
/*
* cjackson: Made this change based on Liferay bug report for searching
* users in control panel with Solr.
*
* [url]http://issues.liferay.com/browse/LPS-3120
*
* This had to be made in addition to the other change on line 285 below
* because I noticed the Advanced search was still having problems.
*/
if( value.startsWith("%") )
value = value.substring(1);
/* End cjackson modifications */
value = StringUtil.replace(
value, StringPool.PERCENT, StringPool.STAR);
value = value.toLowerCase();
WildcardQuery wildcardQuery = new WildcardQuery(
new Term(field, value));
booleanQuery.add(wildcardQuery, BooleanClause.Occur.MUST);
}
else {
//text = KeywordsUtil.escape(value);
Term term = new Term(field, value);
TermQuery termQuery = new TermQuery(term);
booleanQuery.add(termQuery, BooleanClause.Occur.MUST);
}
}

public static void addRequiredTerm(

BooleanQuery booleanQuery, String field, String value, boolean like) {

if (like) {

/*

* cjackson: Made this change based on Liferay bug report for searching

* users in control panel with Solr.

*

* http://issues.liferay.com/browse/LPS-3120

*

* This had to be made in addition to the other change on line 285 below

* because I noticed the Advanced search was still having problems.

*/

if( value.startsWith("%") )

value = value.substring(1);

/*
End cjackson modifications */

value = StringUtil.replace(

value, StringPool.PERCENT, StringPool.STAR);

value = value.toLowerCase();

WildcardQuery wildcardQuery = new WildcardQuery(

new Term(field, value));

booleanQuery.add(wildcardQuery, BooleanClause.Occur.MUST);

}

else {

//text = KeywordsUtil.escape(value);

Term term = new Term(field, value);

TermQuery termQuery = new TermQuery(term);

booleanQuery.add(termQuery, BooleanClause.Occur.MUST);

}

三、Cache方面在portal-ext.properties加上如下代码：
##########################hibernate configuration#############################
net.sf.ehcache.configurationResourceName=/myehcache/hibernate-clustered.xml

##########################ehcache configuration#############################
ehcache.multi.vm.config.location=/myehcache/liferay-multi-vm-clustered.xml
ehcache.single.vm.config.location=/myehcache/liferay-single-vm.xml
记得把cache下面对应的这三个文件copy到web-inf/classes/myehcache下面,然后修改三个文件中cache的过期时间和空亲时间，因为liferay全写的是600s,你会发现在一台server上面修改了，其他的server一点反应也没有，这个值要改成多少，你需要考虑系统性能而定。

四、Http Server负载均衡配置，apache我选的是2.0以后版本，因为他已集成了mod_jk.so的功能。只需简单的把下面几行去掉注释，就相当于以前用mod_jk.so比较繁琐的配置了，修改httped.conf:
去掉下面几句的注释

Xml代码 [/url]

LoadModule proxy_module modules/mod_proxy.so

LoadModule proxy_ajp_module modules/mod_proxy_ajp.so

LoadModule proxy_balancer_module modules/mod_proxy_balancer.so

LoadModule proxy_connect_module modules/mod_proxy_connect.so

LoadModule proxy_ftp_module modules/mod_proxy_ftp.so

LoadModule proxy_http_module modules/mod_proxy_http.so

Include conf/extra/httpd-vhosts.conf

最下面加上如下代码，

Xml代码 [url=http://tyler-zhou.javaeye.com/blog/507158]

ProxyRequests Off
<proxy balancer://lfcluster>
BalancerMember ajp://192.168.52.116:8009 loadfactor=1 route=jvm1
BalancerMember ajp://192.168.52.103:8009 loadfactor=1 route=jvm2
#BalancerMember ajp://127.0.0.1:9001 loadfactor=1 route=jvm3
#BalancerMember ajp://127.0.0.1:9003 loadfactor=1 route=jvm4
</proxy>

ProxyRequests Off

BalancerMember ajp://192.168.52.116:8009 loadfactor=1 route=jvm1

BalancerMember ajp://192.168.52.103:8009 loadfactor=1 route=jvm2

#BalancerMember ajp://127.0.0.1:9001 loadfactor=1 route=jvm3

#BalancerMember ajp://127.0.0.1:9003 loadfactor=1 route=jvm4

</proxy>

IP和端口修改成自已的
然后打开httpd-vhosts.conf 修改如下：

Xml代码 [/url]

ServerAdmin admin@**********.com

ServerName localhost

ServerAlias localhost

ProxyPass / balancer://lfcluster/ stickysession=JSESSIONID nofailover=Off

ProxyPassReverse / balancer://lfcluster/

</VirtualHost>

虚拟主机更详细的配置你可以参考apache网站

五、Tomcat 集群配置
打开Server.xml，shutdown, ajp, http这三个端口就不多说了，解开下面注释
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
jvmRoute的值要根据apache的配置，不能冲突。
接着是最重要的一点，tomcat默认集群配置（<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>）时，配置的细节实际上被省略了，对于大多数应用而言，使用默认配置已经足够，完整的默认配置应该是这样：

Xml代码 [url=http://tyler-zhou.javaeye.com/blog/507158]

<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="6">
<Manager className="org.apache.catalina.ha.session.BackupManager"
expireSessionsOnShutdown="false"
notifyListenersOnReplication="true"
mapSendOptions="6"/>
<!--
<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="228.0.0.4"
port="45564"
frequency="500"
dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
address="auto"
port="5001"
selectorTimeout="100"
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=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
<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.ClusterSessionListener"/>
</Cluster>

<Manager className="org.apache.catalina.ha.session.BackupManager"

expireSessionsOnShutdown="false"

notifyListenersOnReplication="true"

mapSendOptions="6"/>

<!--

<Manager className="org.apache.catalina.ha.session.DeltaManager"

expireSessionsOnShutdown="false"

notifyListenersOnReplication="true"/>

-->

<Membership className="org.apache.catalina.tribes.membership.McastService"

address="228.0.0.4"

port="45564"

frequency="500"

dropTime="3000"/>

<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"

address="auto"

port="5001"

selectorTimeout="100"

maxThreads="6"/>

</Sender>

</Channel>

<Valve className="org.apache.catalina.ha.tcp.ReplicationValve"

filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>

<Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"

tempDir="/tmp/war-temp/"

deployDir="/tmp/war-deploy/"

watchDir="/tmp/war-listen/"

watchEnabled="false"/>

</Cluster>

最后在Web.xml里面加上<distributable/>，官方文档没有这个，但我觉得还是应该加上，因为按照标准的tomcat启动，当Host对象被创建时，一个Cluster对象（默认配置下是SimpleTcpCluster）也同时被关联到这个Host对象。当某个应用在web.xml中设置了distributable时，Tomcat将为此应用的上下文环境创建一个DeltaManager。SimpleTcpCluster启动membership服务和Replication服务。

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集群负载配置

马上注册，结交更多好友，享用更多功能，让你轻松玩转社区。如果您注册时有任何问题请联系客服QQ： 83569622 。

马上注册，结交更多好友，享用更多功能，让你轻松玩转社区。如果您注册时有任何问题请联系客服QQ： 83569622 　。