Dear All,
In our Environment we are using Apache HTTP and Tomcat as AppServer on J2EE based CMS System. and We are using AJP 1.3 connector (Apache HTTPD, Tomcat, CMS are in seperate systems)
Normally accessing the sites & pages through WebServer URL is very slow compare to use Tomcat URL.
The Wired behavior is Apache HTTP is losing connection with Tomcat in few minutes (eg 10-15minutes) then we have to hit the WebServer URL continuously or reboot httpd to resolve this issue.
In the MOD_JK Logs we could see below errors.
[Sun Sep 04 01:17:34 2016][7945:488081152] [info] ajp_connection_tcp_get_message::jk_ajp_common.c (1150): (prd_live_svr) can't receive the response header message from tomcat, network problems or tomcat (
10.100.116.31:9009) is down (errno=110)
[Sun Sep 04 01:17:34 2016][7945:488081152] [error] ajp_get_reply::jk_ajp_common.c (1962): (prd_live_svr) Tomcat is down or refused connection. No response has been sent to the client (yet)
[Sun Sep 04 01:17:34 2016][7945:488081152] [info] ajp_service::jk_ajp_common.c (2447): (prd_live_svr) sending request to tomcat failed (recoverable), (attempt=1)
[Sun Sep 04 03:35:02 2016]prd_live_svr
cmsliv.com 32.624815
[Sun Sep 04 03:36:02 2016][13358:488081152] [info] ajp_process_callback::jk_ajp_common.c (1788): Writing to client aborted or client network problems
[Sun Sep 04 03:36:02 2016][13358:488081152] [info] ajp_service::jk_ajp_common.c (2447): (prd_live_svr) sending request to tomcat failed (unrecoverable), because of client write error (attempt=1)
[Sun Sep 04 03:36:02 2016]prd_live_svr
cmsliv.com 39.879029
[Sun Sep 04 03:36:02 2016][13358:488081152] [info] jk_handler::mod_jk.c (2608): Aborting connection for worker=prd_live_svr
Errors Log:
[Sun Sep 04 09:32:00 2016] [debug] proxy_util.c(1921): proxy: worker proxy:reverse already initialized
[Sun Sep 04 09:32:00 2016] [debug] proxy_util.c(2017): proxy: initialized single connection worker 0 in child 24423 for (*)
[Sun Sep 04 09:54:24 2016] [debug] proxy_util.c(1901): proxy: grabbed scoreboard slot 0 in child 24513 for worker proxy:reverse
[Sun Sep 04 09:54:24 2016] [debug] proxy_util.c(1921): proxy: worker proxy:reverse already initialized
[Sun Sep 04 09:54:24 2016] [debug] proxy_util.c(2017): proxy: initialized single connection worker 0 in child 24513 for (*)
[Sun Sep 04 09:54:29 2016] [debug] proxy_util.c(1901): proxy: grabbed scoreboard slot 0 in child 24514 for worker proxy:reverse
[Sun Sep 04 09:54:29 2016] [debug] proxy_util.c(1921): proxy: worker proxy:reverse already initialized
[Sun Sep 04 09:54:29 2016] [debug] proxy_util.c(2017): proxy: initialized single connection worker 0 in child 24514 for (*)
[Sun Sep 04 10:01:48 2016] [debug] proxy_util.c(1901): proxy: grabbed scoreboard slot 0 in child 24563 for worker proxy:reverse
[Sun Sep 04 10:01:48 2016] [debug] proxy_util.c(1921): proxy: worker proxy:reverse already initialized
[Sun Sep 04 10:01:48 2016] [debug] proxy_util.c(2017): proxy: initialized single connection worker 0 in child 24563 for (*)
Configurations:
worker.list=prd_live_svr
worker.prd_live_svr.type=ajp13
worker.prd_live_svr.host=cmsliv
worker.prd_live_svr.port=9009
live.conf
<VirtualHost *:80>
ServerAlias cmsliv
ErrorLog logs/live/http_error.log
RewriteLog logs/live/http_rewrite.log
CustomLog "|/opt/apps/apache/bin/rotatelogs -f /opt/apps/apache/logs/live/http_access.log.%Y.%m.%d 86400 +60" imi
RewriteEngine on
RewriteCond %{REMOTE_ADDR} !^10\.100\.116\.31$
DocumentRoot /opt/apps/opentext
RewriteRule ^/+$ /sites/ [R,L]
<IfModule rewrite_module>
Options +FollowSymlinks
RewriteEngine On
RewriteOptions Inherit
#RewriteLogLevel 9
RewriteLog logs/rewrite.log
</IfModule>
JkMount /* prd_live_svr
</VirtualHost>
httpd.conf:
NameVirtualHost *:80
Include conf/qu/live.conf
Timeout 300
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
<IfModule worker.c>
StartServers 6
MaxClients 230
MinSpareThreads 75
MaxSpareThreads 150
ThreadsPerChild 25
MaxRequestsPerChild 0
</IfModule>
Kindly please help to resolve this issue.
--
Thanks & Regards,
Jayaram Ponnusamy
