On Thu, Nov 26, 2009 at 5:47 PM, Rainer Jung <rainer.j...@kippdata.de> wrote: > Hi, > > On 25.11.2009 17:56, Steve Neidinger wrote: >> Greetings, >> >> I'm setting up a new apache system using mod_jk to talk to 8 JBoss >> instances on a separate server and I'm seeing a lot of entries in the >> mod_jk.log that I find troubling. Here is a snippet: >> >> [Wed Nov 25 10:32:31.727 2009] [9435:2088340368] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber8server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> [Wed Nov 25 10:32:31.755 2009] [8698:2812140432] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber2server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> [Wed Nov 25 10:32:31.779 2009] [9229:2885569424] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber5server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> [Wed Nov 25 10:32:31.797 2009] [9538:2610826128] [warn] >> ajp_handle_cping_cpong::jk_ajp_common.c (883): awaited reply cpong, >> received 3 instead >> [Wed Nov 25 10:32:31.848 2009] [9849:2140789648] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber1server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> [Wed Nov 25 10:32:31.868 2009] [8691:2948508560] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber1server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> [Wed Nov 25 10:32:31.869 2009] [9229:2990467984] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber1server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> [Wed Nov 25 10:32:31.869 2009] [9229:2990467984] [info] >> ajp_send_request::jk_ajp_common.c (1456): >> (jbossjvmnumber1server-app01) all endpoints are disconnected, detected >> by connect check (0), cping (1), send (0) >> [Wed Nov 25 10:32:31.873 2009] [9538:2526907280] [warn] >> ajp_handle_cping_cpong::jk_ajp_common.c (883): awaited reply cpong, >> received 3 instead >> [Wed Nov 25 10:32:31.913 2009] [8689:2035891088] [warn] >> ajp_handle_cping_cpong::jk_ajp_common.c (883): awaited reply cpong, >> received 3 instead >> [Wed Nov 25 10:32:31.916 2009] [8689:2969488272] [warn] >> ajp_handle_cping_cpong::jk_ajp_common.c (883): awaited reply cpong, >> received 3 instead >> [Wed Nov 25 10:32:31.918 2009] [8698:2298137488] [warn] >> ajp_handle_cping_cpong::jk_ajp_common.c (883): awaited reply cpong, >> received 3 instead >> [Wed Nov 25 10:32:31.933 2009] [9952:2591853456] [warn] >> ajp_handle_cping_cpong::jk_ajp_common.c (883): awaited reply cpong, >> received 3 instead >> [Wed Nov 25 10:32:31.938 2009] [9538:2610826128] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber4server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> [Wed Nov 25 10:32:31.938 2009] [9538:2610826128] [info] >> ajp_send_request::jk_ajp_common.c (1456): >> (jbossjvmnumber4server-app01) all endpoints are disconnected, detected >> by connect check (0), cping (1), send (0) >> [Wed Nov 25 10:32:32.002 2009] [8764:2130299792] [warn] >> ajp_handle_cping_cpong::jk_ajp_common.c (883): awaited reply cpong, >> received 3 instead >> [Wed Nov 25 10:32:32.030 2009] [9538:2526907280] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber4server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> [Wed Nov 25 10:32:32.030 2009] [9538:2526907280] [warn] >> ajp_handle_cping_cpong::jk_ajp_common.c (883): awaited reply cpong, >> received 3 instead >> [Wed Nov 25 10:32:32.068 2009] [8689:2035891088] [info] >> ajp_send_request::jk_ajp_common.c (1402): >> (jbossjvmnumber4server-app01) failed sending request, socket -1 >> prepost cping/cpong failure (errno=0) >> >> Here is a portion of my worker.properties file: >> >> # Define the common template >> worker.template.type=ajp13 >> worker.template.port=8009 >> worker.template.lbfactor=1 >> worker.template.socket_connect_timeout=5000 >> worker.template.connection_pool_timeout=600 >> worker.template.ping_mode=A >> worker.template.ping_timeout=10000 >> worker.template.reply_timeout=300000 >> worker.template.fail_on_status=404,500,503 >> worker.template.recovery_options=7 >> worker.template.connection_pool_minsize=0 >> worker.template.socket_keepalive=True >> worker.template.retries=2 >> >> I've googled and can't find any specific help on these errors. >> Hopefully someone can help on this. > > I guess this is a known JBoss bug. I had to analyze it recently. The > JBoss server in that case sended an additional response packet of size 0 > after the final response packet. That's a protocol violation. > > When mod_jk sends a cping in front of the next request, JBoss answers > correctly with a cpong, but mod_jk reading from the network buffer first > gets the empty response packet left over from the previous response and > complains, because it's not the cpong packet. > > You should file a bug at JBoss for this. > > Regards, > > Rainer >
Thanks for the response, Rainer. Steve --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
