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配合大藍(IHS),使用mod_proxy連接J老闆

奇怪!為什麼都是遇到大藍咧~
為什麼要用AIX這種討人厭的東西咧~
(純粹是因為個人習慣用Linux 跟 Mac 的指令,對於古早的UNIX不習慣的呻吟 哈!)

要用JBoss Cluster 做Load Balance, 一般來說在JEAP 5 都是用mod_jk
因為實在是太多太多太多網路上的文件了,所以我就不寫了 (而且因為本人已經做到爛了~再寫我就要吐了)

今天遇到的問題是因為遇到主機是在AIX上面,
紅帽不支援在AIX上的Web Server, 所以只好延用AIX 上面的IBM Http Server (IHS)

我本來也想要用mod_jk,就像之前我在centOS上面重新compiler 那個.so 檔案一樣。。
可是查了一下網路,看到那些gmake, gcc ....我就昏了!這...AIX 未免也複雜了吧!
(我不是C的專家。。我不是C的專家。。我不是C的專家。。我不是C的專家。。 )

後來發現IHS自己裡面已經內建了mod_proxy... 好吧!就是它了!

建置的方式 -> 使用AJP連結 (REVERSE)
==================================================
Step 1.  到 IHS_HOME/conf/httpd.conf 把相關的Module 打開


LoadModule proxy_module modules/mod_proxy.so

LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
or
LoadModule proxy_balancer_module modules/WebSphereCE/mod_proxy_balancer.so

LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
or
LoadModule proxy_ajp_module modules/WebSphereCE/mod_proxy_ajp.so


Step 2. 在 IHS_HOME/conf/httpd.conf 裡面加上


<IfModule mod_proxy.c>
   <Proxy balancer://jbossCluster >
      Order deny,allow
      Allow from all

      BalancerMember ajp://server1:port1/somecxtPath route=node1 loadfactor=50

      BalancerMember ajp://server2:port2/somecxtPath route=node2 loadfactor=50
   </Proxy>
   <Location /balancer-manager>
      SetHandler balancer-manager
   </Location>
   ProxyPass /somecxtPath balancer://jbossCluster stickysession=JSESSIONID|jsessionid
</IfModule>



Step 3. JBoss 上設定對應的node, 到 /JBOSS_HOME/server/INSTALL_PROFILE/deploy/jbossweb.sar/server.xml 裡面找到
Engine 開頭的 xml element, 加上 jvmRoute (記得每個node 都要取不同的名字)


<Engine name="jboss.web" defaultHost="localhost" jvmRoute="node1">
   .
</Engine>


Step 4. 打開JBoss 的 Proxy設定, 到
/JBOSS_HOME/server/INSTALL_PROFILE/deployers/jbossweb.deployer/META-INF/war-deployers-jboss-beans.xml 裡面找到 關鍵字 useJK 改成true.

<property name="useJK">true</property>


注: mod_proxy 還有很多可以調整的部分,
例如 connectiontimeout等等...

可以參考它的開發官網。
http://httpd.apache.org/docs/2.2/mod/mod_proxy.html



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