----- "Yu Kikuchi" <kikuchi.yu@xxxxxxxxxxxxxx> wrote: > Hi All. > > The error_log (debug) is attached. Hi, I think you really need to post your config. Your errorlog suggests that you're doing something entirely wrong. > I understood "(120006) error" means Apache wasn't able to receive the > headers of the response from the backend server. > But I don't know why the headers didn't return and I want any opinions > about the reason. > Please teach me how to know the problem. > > Best regards, > > > (2010/10/12 11:07), Kikuchi Yu wrote: > > Thanks for getting back to me. > > > > > Could it be a timeout while waiting for the reply? Add "%D" to > your LogFormat and check, how long those requests take. > > > > The following is an Apache's access_log when the HTTP 503 error > occured. > > It seems the request took only "42ms" so I think it's not because of > a timeout. > > > > xxx.xxx.xxx.xxx - - [09/Aug/2010:03:38:32 +0900] "GET /api/alive.jsp > HTTP/1.1" 503 2366 0 42324 > > > > > I didn't understand the "the errors disappeared instead of > cping/cpong retry occurrence" part of your question. > > > > I'm sorry I'm not good at using English well. > > > > It's my understanding that: > > 1. "ping" option gets Apache to check the connection to the > backend. > > 2. If the first CPing/CPong check doesn't succeed, it will > reestablish a new connection to the backend and run one more > > CPing/CPong. > > > > When I set "ping=1" option to ProxyPass directive, Apache failed the > first CPing/CPong check, but succeeded at > > connecting to backend by the second CPing/CPong. > > So HTTP 500/503 error didn't occur. > > > > I wonder if the connection will break instantaneously(within 1 > second). > > Would you give me any comments about this phenomenon? > > > > > > (2010/10/08 20:19), Rainer Jung wrote: > >> On 08.10.2010 09:33, Yu Kikuchi wrote: > >>> My environment is Apache 2.2.11 and JBoss AS 5.0.0. > >>> There were no messages in JBoss's access log when the error > occured. > >>> > >>> I had changed the setting to use "mod_proxy_http" the day before > yesterday, > >>> then not HTTP 503 error but 502 error occured. > >>> Are anybody onto something about this error? > >>> > >>> Are there any ideas to pursue the exact cause of it? > >>> > >>> > >>> (2010/10/07 18:50), Yu Kikuchi wrote: > >>>> Hello. > >>>> > >>>> Apache wrote such as following messages into error_log and > returned HTTP 500/503 error infrequently. > >>>> > >>>> [error] (104)Connection reset by peer: ajp_ilink_receive() can't > receive header > >>>> [error] ajp_read_header: ajp_ilink_receive failed > >>>> [error] (120006)APR does not understand this error code: proxy: > read response failed from xxx.xxx.xxx.xxx:8009 > >>>> (xxx.xxx.xxx.xxx) > >>>> > >>>> I have installed Apache and JBoss Application Server into the > same server. > >>>> I suspected mod_proxy_ajp caused the errors because JBoss hasn't > logged any messages and left indications of abort. > >>>> > >>>> After the setting of "ping" options, the errors disappeared > instead of cping/cpong retry occurrence. Exactly: > >>>> > >>>> --------------------------------------------------- > >>>> <Location /test> > >>>> ProxyPass ajp://xxx.xxx.xxx.xxx:8009/test ping=1 > >>>> </Location> > >>>> --------------------------------------------------- > >>>> > >>>> I examine prior occurrences, but nobody told about the cause of > this phenomenon. > >>>> Does anybody tell me why the errors came up? > >> > >> Could it be a timeout while waiting for the reply? Add "%D" to your > LogFormat and check, how long those requests take. > >> > >> I didn't understand the "the errors disappeared instead of > cping/cpong retry occurrence" part of your question. > >> > >> Regards, > >> > >> Rainer > >> > >> > --------------------------------------------------------------------- > >> The official User-To-User support forum of the Apache HTTP Server > Project. > >> See <URL:http://httpd.apache.org/userslist.html> for more info. > >> To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > >> " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > >> For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > >> > >> > >> > > > > > > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server > Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx -- Igor GaliÄ Tel: +43 (0) 664 886 22 883 Mail: i.galic@xxxxxxxxxxxxxx URL: http://brainsware.org/ --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
|