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Posted to users@httpd.apache.org by Sandeep HS <hs...@gmail.com> on 2015/05/07 13:38:42 UTC
[users@httpd] "Service temporarily unavailable"
Hi ,
We have query related to Apache(httpd)-Tomcat communication and following
are the details.
*Our configuration:*
We have a web based tool where request to Tomcat service is send through
apache using proxy.
i.e., when some one selects a service on web page, apache acts as an
interface where it forwards the request to Tomcat and then send back
response from tomcat to web interface.
*Apache configuration:*
ProxyPass /reqheader/* https://localhost:PORT_X/reqheader/*
ProxyPassReverse /reqheader/* https://localhost:PORT_X/reqheader/*
Here PORT_X port is used by tomcat service.
*Query:*
When apache is trying to connect to backend server Tomcat at port PORT_X,
Sometimes that request fails and we get "Service temporarily unavailable"
message.
When "Service temporarily unavailable" issue is hit, we are seeing
following below message in error_log
[Mon Apr 20 14:45:06 2015] [error] (239)Connection refused: proxy: HTTPS:
attempt to connect to 127.0.0.1:PORT_X (localhost) failed
[Mon Apr 20 14:45:06 2015] [error] ap_proxy_connect_backend disabling
worker for (localhost)
By the error message it seems that whenever apache is trying to connect to
tomcat at port PORT_X and if there is no service running at this port then
this issue is hit.
I have tried to use retry=0 for PassProxy and it did not resolve the issue.
i.e,
ProxyPass /reqheader https://localhost:PORT_X/reqheader retry=0
*Below are my questions, can you please clarify*.
1. what can cause this issue?
2. How to identify exact root cause?
3. If this is known issue, is there any fix(configuration parameter or
patch ) available?
Also, please provide any reference documents for the same
Thanks,
Sandeep
Re: [users@httpd] "Service temporarily unavailable"
Posted by "Bremser, Kurt (AMOS Austria GmbH)" <Ku...@allianz.at>.
Have you considered using a connector like mod_jk to connect to the servlet container?
Kurt Bremser
AMOS Austria
Newton was wrong. There is no gravity. The Earth sucks.
________________________________
Von: Sandeep HS [hssandeep16@gmail.com]
Gesendet: Donnerstag, 7. Mai 2015 13:38
An: users@httpd.apache.org
Betreff: [users@httpd] "Service temporarily unavailable" [wd-vc]
Hi ,
We have query related to Apache(httpd)-Tomcat communication and following
are the details.
*Our configuration:*
We have a web based tool where request to Tomcat service is send through
apache using proxy.
i.e., when some one selects a service on web page, apache acts as an
interface where it forwards the request to Tomcat and then send back
response from tomcat to web interface.
*Apache configuration:*
ProxyPass /reqheader/* https://localhost:PORT_X/reqheader/*
ProxyPassReverse /reqheader/* https://localhost:PORT_X/reqheader/*
Here PORT_X port is used by tomcat service.
*Query:*
When apache is trying to connect to backend server Tomcat at port PORT_X,
Sometimes that request fails and we get "Service temporarily unavailable"
message.
When "Service temporarily unavailable" issue is hit, we are seeing
following below message in error_log
[Mon Apr 20 14:45:06 2015] [error] (239)Connection refused: proxy: HTTPS:
attempt to connect to 127.0.0.1:PORT_X (localhost) failed
[Mon Apr 20 14:45:06 2015] [error] ap_proxy_connect_backend disabling
worker for (localhost)
By the error message it seems that whenever apache is trying to connect to
tomcat at port PORT_X and if there is no service running at this port then
this issue is hit.
I have tried to use retry=0 for PassProxy and it did not resolve the issue.
i.e,
ProxyPass /reqheader https://localhost:PORT_X/reqheader retry=0
*Below are my questions, can you please clarify*.
1. what can cause this issue?
2. How to identify exact root cause?
3. If this is known issue, is there any fix(configuration parameter or
patch ) available?
Also, please provide any reference documents for the same
Thanks,
Sandeep
AMOS Austria GmbH
1130 Wien, Hietzinger Kai 101-105
FN 365014k, Handelsgericht Wien
UID: ATU 66614737
http://www.allianz.at
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