纠结的mod_jk与jetty的组合

asdrtu

　　最近，公司要尝试jetty，我们几个人凑在一块做一下jetty相关的测试. 希望可以用轻量级的jetty替换Jboss , tomact，目前还是小步前进，还是以jetty软件的形式引入，以后Embed Jetty也会是一种方向，真正做到轻量级。


我这边主要测试一下, mod_jk与Jetty链接(以前一直都是用mod_jk 1.2.18)

配置形式： Apache 2.2 + mod_jk 1.2.18 + Jetty 7.1.5

我这里不详细描述具体的安装配置过程，这类教程网上一搜一大把，只记录重点的几个配置和遇到的问题，头痛中。。。


1. Apache 2.2配置

......
Include /home/admin/benni/script/config/mod_jk.conf
......
　　

2. mod_jk 1.2.18配置

LoadModule jk_module /usr/alibaba/httpd/mod_jk.so
JkLogFile "|/usr/alibaba/cronolog/sbin/cronolog /home/admin/output/logs/jk_logs/mod_jk.log.%w"
JkLogLevel error
JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"
JkOptions +ForwardURICompatUnparsed
JkOptions +ForwardDirectories
JkMountCopy All
JkShmFile /home/admin/output/jk.shm
.....
JkWorkerProperty worker.list=localnode
JkWorkerProperty worker.localnode.port=7011
JkWorkerProperty worker.localnode.host=localhost
JkWorkerProperty worker.localnode.type=ajp13
JkWorkerProperty worker.localnode.lbfactor=1
JkWorkerProperty worker.localnode.socket_keepalive=True
JkWorkerProperty worker.localnode.socket_timeout=20
JkWorkerProperty worker.localnode.connection_pool_minsize=25
JkWorkerProperty worker.localnode.connection_pool_timeout=600
　　3. Jetty 配置

<Call name="addConnector">
<Arg>
<New class="org.eclipse.jetty.ajp.Ajp13SocketConnector">
<Set name="port">7011</Set>
<!--
<Set name="maxIdleTime">600000</Set>
<Set name="acceptQueueSize">256</Set>
<Set name="statsOn">false</Set>
<Set name="confidentialPort">8443</Set>
<Set name="lowResourcesMaxIdleTime">5000</Set>
<Set name="responseBufferSize">65536</Set>
-->
</New>
</Arg>
</Call>

　　出现的问题：
　　1. Jetty日志:

java.io.IOException: FULL
at org.eclipse.jetty.ajp.Ajp13Parser.fill(Ajp13Parser.java:199)
at org.eclipse.jetty.ajp.Ajp13Parser.parseNext(Ajp13Parser.java:553)
at org.eclipse.jetty.ajp.Ajp13Parser.parseAvailable(Ajp13Parser.java:156)
at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:424)
at org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:241)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)
at java.lang.Thread.run(Thread.java:619)
　　2. mod_jk wrong message

[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_connection_tcp_get_message::jk_ajp_common.c (1212): wrong message size 8195 8192 from 127.0.0.1:7011
[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_get_reply::jk_ajp_common.c (1992): (localnode) Tomcat is down or network problems. Part of the response has already been sent to the client
[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_connection_tcp_get_message::jk_ajp_common.c (1212): wrong message size 8195 8192 from 127.0.0.1:7011
[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_get_reply::jk_ajp_common.c (1992): (localnode) Tomcat is down or network problems. Part of the response has already been sent to the client
[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_service::jk_ajp_common.c (2466): (localnode) connecting to tomcat failed.
 　　3. mod_jk  can't receive the response body

[Wed Oct 20 19:50:00 2010][21270:1598732608] [error] ajp_connection_tcp_get_message::jk_ajp_common.c (1242): (localnode) can't receive the response body message from tomcat, network problems or tomcat (127.0.0.1:7011) is down (errno=11)
[Wed Oct 20 19:50:00 2010][21270:1598732608] [error] ajp_get_reply::jk_ajp_common.c (1992): (localnode) Tomcat is down or network problems. Part of the response has already been sent to the client
[Wed Oct 20 19:50:00 2010][21270:1598732608] [error] ajp_service::jk_ajp_common.c (2466): (localnode) connecting to tomcat failed

最后：
　　查询了相关资料，发现网上还是有很多人出现了类似的情况，目前一直还未解决问题，先记录着，等以后解决
　　几点建议：
　　1.  jetty使用jetty 7.1.6， 修复了几个问题，可查看 changeLog 
　　2.  关注下jdk 1.6中nio的bug ,  JDK1.6+Problems , 可能会出现类似mail list提到的问题，cpu使用100%, 具体查看http://dev.eclipse.org/mhonarc/lists/jetty-users/msg00613.html

相关资料：

• 网上类似问题 ：  http://comments.gmane.org/gmane.comp.java.jetty.support/10660
  
• jetty codehaus的jira库： http://jira.codehaus.org/browse/JETTY
  
• jetty mail list :   http://dev.eclipse.org/mhonarc/lists/jetty-users/threads.html http://archive.codehaus.org/lists/org.codehaus.jetty.user/
  
• tomcat mail list : http://mail-archives.apache.org/mod_mbox/tomcat-users/