Re: Tomcat & Apache on Three AS400's

[Kristen Henry <klhnry@xxxxxxxxxxxx>]

Is the CCSID of the workers.properties file the same on the problem system as 
the other two? Probably want CCSID of 437 or 819.

Kristen

Kristen

Larry wrote:

> I have Tomcat 4.1.12 loaded on three AS400's teamed up with IBMs PTF 
> distribution of Apache.  I got Tomcat running on one as400 and then copied 
> the tomcat directory to the other two AS400s.  On the original install and 
> the third install everuthig works great.  But on the second install I can 
> only get tomcat to work standalone.  It absolutely refuses to function with 
> the Apache plugin.  When I install the apache-tomcat plugin module to the 
> apache config, the Apache instance will not start.
>
> I have had my Sys Admin guy scour the three 400's for differences, but we can 
> find none.  PTF levels are the same.  In one act of desparation we did a full 
> backup of one of the working machines and restored it to the non-working 
> machine and still ended up with the same result.  I am left confounded.  We 
> called IBM support, but since we are using the Jakarta distribution of Tomcat 
> they were less than helpful.
>
> Anyone have any ideas what I can look for?  Any help appreciated.  Some more 
> details follow for those who are interested.
>
> Larry
>
> Further details:
>
> *****Apache-Tomcat Plugin Configuration:
> LoadModule jk_module /QSYS.LIB/QHTTPSVR.LIB/QZTCJK.SRVPGM
> #Tomcat Plugin Method
> JkWorkersFile /home/tomcat/jakarta-tomcat-4.1.12/conf/workers.properties
> JkLogFile /www/pub/logs/jk.log
> JkLogLevel error
> JkMount /webpublic/* ajp13
>
> If all of these lines are commented out, the apache instance on this machine 
> will start up fine.
>
> *****The apahce job tries to start and its job log prints out these errors a 
> few times and then shutsdown completely:
> HTTP Server instance ARLOPUB, hot backup takeover.
>
> *****The dump on the apache job looks like this:
> User Trace Dump for job 009803/QTMHHTTP/PUB. Size: 300K, Wrapped 0 times.
> --- 03/04/2003 11:57:02 ---
>   00000001:123896 Stack Dump For Current Thread
>   00000001:123920 Stack:  os.c:ABORT OCCURED:
>   00000001:124048 Stack:  Library    / Program     Module      Stmt    
> Procedure
>   00000001:124072 Stack:  QSYS       / QP0ZPCP2    QP0ZPCP2    553   : 
> _CXX_PEP
>   00000001:124088 Stack:  QSYS       / QP0ZPCP2    QP0ZPCP2    539   : main
>   00000001:124112 Stack:  QSYS       / QP0ZPCPN    QP0ZPCPN    813   : 
> Qp0zNewProcess
>   00000001:124128 Stack:  QSYS       / QP0ZPCPN    QP0ZPCPN    1580  : 
> InvokeTargetPgm__FP11qp0z_pcp_cb
>   00000001:124152 Stack:  QHTTPSVR   / QZSRHTTP    QZSRMAIN    42    : 
> _CXX_PEP
>   00000001:124168 Stack:  QHTTPSVR   / QZSRHTTP    QZSRMAIN    28    : main
>   00000001:124184 Stack:  QHTTPSVR   / QZSRCORE    MAIN        685   : 
> apache_main
>   00000001:124208 Stack:  QHTTPSVR   / QZSRCORE    MPMT_PTHRE  18    : 
> AS400_call_child_main
>   00000001:124224 Stack:  QHTTPSVR   / QZSRCORE    MPMT_PTHRE  11    : 
> child_main
>   00000001:124240 Stack:  QHTTPSVR   / QZSRCORE    HTTP_CONFI  5     : 
> ap_run_child_init
>   00000001:124256 Stack:  QHTTPSVR   / QZTCJK      MOD_JK      22    : 
> jk_child_init
>   00000001:124272 Stack:  QHTTPSVR   / QZTCJK      MOD_JK      7     : 
> jk_error_exit
>   00000001:124296 Stack:  QHTTPSVR   / QZSRCORE    OS          33    : 
> ap_abort
>   00000001:124312 Stack:  QHTTPSVR   / QZSRAPR     OS400TRACE  1     : 
> apr_dstack
>   00000001:124328 Stack:  QSYS       / QP0ZCPA     QP0ZUDBG    477   : 
> Qp0zDumpStack
>   00000001:124344 Stack:  QSYS       / QP0ZSCPA    QP0ZSCPA    852   : 
> Qp0zSUDumpStack
>   00000001:124360 Stack:  QSYS       / QP0ZSCPA    QP0ZSCPA    863   : 
> Qp0zSUDumpTargetStack
>   00000001:124360 Stack:  Completed
>   00000001:124432 apr_dump_trace(): dump for job 009803/QTMHHTTP/PUB
>                                                    TRCTCPAPP Output
>
> *****Workers.properties looks like:
> workers.java_home=/QIBM/ProdData/Java400/jdk13
> workers.tomcat_home=/home/tomcat/jakarta-tomcat-4.1.12/
> ps=/
> worker.list=ajp13
> worker.ajp13.type=ajp13
> worker.ajp13.host=LOCALHOST
> worker.ajp13.port=8009
>
> *****Basic Error log looks like:
> [Tue Mar 25 10:35:12 2003] [emerg] Error while opening the workers
> [Tue Mar 25 10:36:16 2003] [emerg] Error while opening the workers
> [Tue Mar 25 10:36:16 2003] [emerg] Error while opening the workers
> [Tue Mar 25 10:37:16 2003] [emerg] Error while opening the workers
> [Tue Mar 25 10:37:17 2003] [emerg] Error while opening the workers
>
> For testing, I made workers.properties have full access rights to public, 
> with the same result.  I also replaced workers.properties with a copy from 
> one of the working machines with no result.  So I do not believe it is a 
> security issue.
>
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