Hi Thanh, You might want to use the Stuck thread detection value<http://tomcat.apache.org/tomcat-6.0-doc/config/valve.html#Stuck_Thread_Detection_Valve>for logging, if there is some threads that get stuck. And these might never complete their requests to return back to nginx.
--- Regards, Saptarshi PURKAYASTHA My Tech Blog: http://sunnytalkstech.blogspot.com You Live by CHOICE, Not by CHANCE On 19 July 2013 20:11, Ngoc Thanh Nguyen <thanh.hispviet...@gmail.com>wrote: > Thanks Bob. That's definitely the case. However, do you think this can > affect the performance? In other words, will it cause server memory or cpu > problem? > > Thanh > > > On Fri, Jul 19, 2013 at 7:24 PM, Bob Jolliffe <bobjolli...@gmail.com>wrote: > >> I am sure you have a proxy (nginx or apache?) on the same machine. So >> the users access the proxy and the proxy accesses tomcat (which sees the >> request as a local one). >> >> You need to add a directive to your proxy to preserve the name of the >> requesting host. On nginx this is: >> >> see http://ashberlin.co.uk/blog/nginx-proxy-host-header >> >> On apache2: >> >> http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypreservehost >> >> Bob >> >> >> >> >> >> On 19 July 2013 13:39, <jeromesha...@gmail.com> wrote: >> >>> ** >>> Hi Ngoc, no my server is not public >>> Sent from my BlackBerry wireless device from MTN >>> ------------------------------ >>> *From: * Ngoc Thanh Nguyen <thanh.hispviet...@gmail.com> >>> *Date: *Fri, 19 Jul 2013 18:36:20 +0700 >>> *To: *jerome shaguy<jeromesha...@gmail.com> >>> *Cc: *dhis2-devs<dhis2-devs@lists.launchpad.net> >>> *Subject: *Re: [Dhis2-devs] Strange request from 127.0.0.1 >>> >>> Hi Jerome, >>> >>> Is your server public? In my case, I am guessing that some bad guys have >>> hacked into the system by exploiting some security holes of the system or >>> probably dhis2 itself. >>> >>> Thanh >>> >>> >>> On Fri, Jul 19, 2013 at 5:05 PM, jerome shaguy >>> <jeromesha...@gmail.com>wrote: >>> >>>> Hi, >>>> >>>> I have also been experiencing the same problem with my tomcat as >>>> reported by Ngoc (but in my case it was only after I upgraded my war file >>>> to 2.12) I am seeing a lot of requests in the log even though I am on >>>> 127.0.0.1 and its constantly exceeding memory and completely halting simple >>>> processes... I have tried to adjust memory to tomcat but this has not >>>> helped. I join Ngoc in asking is there anyone out there with a solution? >>>> >>>> >>>> On Fri, Jul 19, 2013 at 10:20 AM, Ngoc Thanh Nguyen < >>>> thanh.hispviet...@gmail.com> wrote: >>>> >>>>> In our server tomcat access log, there are lots of requests from >>>>> 127.0.0.1 which is obviously local request. However, no one from our team >>>>> actually working from the server so it must be automatic requests. This >>>>> might be the reason for our server problems last several days as the >>>>> system >>>>> always results in full CPU or exceeding memory. >>>>> >>>>> Any one have ideas on how to kill these process? >>>>> >>>>> Thanks >>>>> >>>>> _______________________________________________ >>>>> Mailing list: https://launchpad.net/~dhis2-devs >>>>> Post to : dhis2-devs@lists.launchpad.net >>>>> Unsubscribe : https://launchpad.net/~dhis2-devs >>>>> More help : https://help.launchpad.net/ListHelp >>>>> >>>>> >>>> >>> >>> _______________________________________________ >>> Mailing list: https://launchpad.net/~dhis2-devs >>> Post to : dhis2-devs@lists.launchpad.net >>> Unsubscribe : https://launchpad.net/~dhis2-devs >>> More help : https://help.launchpad.net/ListHelp >>> >>> >> > > _______________________________________________ > Mailing list: https://launchpad.net/~dhis2-devs > Post to : dhis2-devs@lists.launchpad.net > Unsubscribe : https://launchpad.net/~dhis2-devs > More help : https://help.launchpad.net/ListHelp > >
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