Solr:Deploy solr to tomcat

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本文介绍了如何在Ubuntu上安装配置Tomcat 7，并详细记录了部署Solr过程中遇到的问题及解决方案，包括权限错误和环境变量配置等。

Install tomcat7

#sudo apt-get update

#sudo apt-get install tomcat7

#sudo apt-get install tomcat7-admin

http://localhost:8080/

#sudo vi /etc/tomcat7/tomcat-users.xml

<tomcat-users>
    <user username="admin" password="password" roles="manager-gui,admin-gui"/>
</tomcat-users>

#sudo service tomcat7 restart

http://your_ip_address:8080/manager/html

Change tomcat max heap size

sudo vi /etc/default/tomcat7

# You may pass JVM startup parameters to Java here. If unset, the default
# options will be: -Djava.awt.headless=true -Xmx128m -XX:+UseConcMarkSweepGC
#
# Use "-XX:+UseConcMarkSweepGC" to enable the CMS garbage collector (improved
# response time). If you use that option and you run Tomcat on a machine with
# exactly one CPU chip that contains one or two cores, you should also add
# the "-XX:+CMSIncrementalMode" option.
JAVA_OPTS="-Djava.awt.headless=true -Xms256m -Xmx1024m -XX:+UseConcMarkSweepGC"

Deploy Solr to tomcat

#cp solr.jar /var/lib/tomcat7/webapps/

#cp example/solr/* ~/SolrHome/

#sudo serivce tomcat7 restart

but there is a error

 Jul 09, 2014 5:38:36 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error filterStart
Jul 09, 2014 5:38:36 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [/solr] startup failed due to previous e

To solve this error:

#sudo cp example/lib/ext/*.jar /usr/share/tomcat7/lib/

or cp these jars to solr/WEB-INF/lib/

#sudo cp example/resources/log4j.properties /usr/share/tomcat7/lib/

restart tomcat

Now I can access solr by http://localhost:8080/solr

but error:

HTTP Status 500 - {msg=SolrCore 'collection1' is not available due to init 
failure: Error opening new searcher,trace=org.apache.solr.common.SolrException:
 SolrCore 'collection1' is not available due to init failure:
 Error opening new searcher at org.apache.solr.core.CoreContainer.getCore(
CoreContainer.java:827) at org.apache.solr.servlet.SolrDispatchFilter.doFilter
(SolrDispatchFilter.java:317) at
 org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:217) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) Caused by: org.apache.solr.common.SolrException: Error opening new searcher at org.apache.solr.core.SolrCore.<init>(SolrCore.java:844) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:630) at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:562) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:597) at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:258) at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:250) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) ... 3 more Caused by: org.apache.solr.common.SolrException: Error opening new searcher at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1521) at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1633) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:827) ... 11 more Caused by: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/home/zhaohj/SolrHome/collection1/data/index/write.lock: java.io.FileNotFoundException: /home/zhaohj/SolrHome/collection1/data/index/write.lock (Permission denied) at org.apache.lucene.store.Lock.obtain(Lock.java:89) at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:702) at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:77) at org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:64) at

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All above errors are due to permission causes.

Solution:#sudo mkdir /home/tomcat7/SolrHome

#sudo cp example/solr/* /home/tomcat7/SolrHome/

#cd /home

#sudo chown -R tomcat7.tomcaty tomcat7

Edit solr's web.xml in /var/lib/tomcat7/webapps/solr/WEB-INF/web.xml

<env-entry>
       <env-entry-name>solr/home</env-entry-name>
       <env-entry-value>/home/tomcat7/SolrHome</env-entry-value>
       <env-entry-type>java.lang.String</env-entry-type>
</env-entry>

#sudo service tomcat7 restart

every is ok.

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Chinese Tokenizer

1. cp jcseg related jars (core and solr) to /var/lib/tomcat7/webapps/solr/WEB-INF/lib/

2. cp jcseg lexicon dir to the same dir

3. modify schema.xml in each core conf dir

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