Sent from my tablet. On Feb 17, 2015 7:22 AM, "Rainer Jung" <rainer.j...@kippdata.de> wrote: > > Am 14.02.2015 um 18:44 schrieb Jeff Kohut: > >> Sent from Google Nexus Phone >> On Feb 14, 2015 9:54 AM, "Rainer Jung" <rainer.j...@kippdata.de> wrote: >>> >>> >>> Am 14.02.2015 um 12:46 schrieb Jeff Kohut: >>> >>>> On Fri, Feb 13, 2015 at 10:29 AM, Christopher Schultz < >>>> ch...@christopherschultz.net> wrote: >>>> >>>>> -----BEGIN PGP SIGNED MESSAGE----- >>>>> Hash: SHA256 >>>>> >>>>> Jeff, >>>>> >>>>> On 2/13/15 10:28 AM, Jeff Kohut wrote: >>>>>> >>>>>> >>>>>> I am running Tomcat 7.0.54 on a Windows 2008 R1 with SP1 >>>>>> platform. >>>>>> >>>>>> I would like to control the contents of what gets logged to the >>>>>> Tomcat localhost_access_log >>>>>> >>>>>> specifically , I would like to remove logging of entries like : >>>>>> >>>>>> 10.239.54.8 - - [13/Feb/2015:00:00:07 -0600] "GET /atb HTTP/1.0" >>>>>> 200 573 10.239.58.29 - - [13/Feb/2015:00:00:08 -0600] "GET /atb >>>>>> HTTP/1.0" 200 561 >>>>>> >>>>>> we have some external load balancers and server monitoring >>>>>> software periodically hitting the application web page to see if it >>>>>> is responding. I would like to know how remove these entries to >>>>>> reduce the amount of "noise" that is in the localhost_access_log >>>>>> log file, but allow other entries (i.e. from OTHER IP addresses or >>>>>> with other functions like "POST" or other strings like "HTTP/1.1" >>>>>> >>>>>> I have examined the information at the below link (unfortunately >>>>>> there is no example there with detail on what I am attempting to >>>>>> do). >>>>>> >>>>>> http://tomcat.apache.org/tomcat-7.0-doc/config/valve.html >>>>>> >>>>>> Seems like I want to use the valve Access Log Valve Attributes: >>>>>> >>>>>> conditionIf >>>>>> >>>>>> or >>>>>> >>>>>> conditionUnless >>>>>> >>>>>> options from valve documentation, but it is not clear to me how to >>>>>> do this (if this is the correct way ?). >>>>> >>>>> >>>>> >>>>> Yep, this is what you are looking for. >>>>> >>>>>> Server.xml currently has the following setup configuration: >>>>>> >>>>>> <!-- Access log processes all example. Documentation at: >>>>>> /docs/config/valve.html Note: The pattern used is equivalent to >>>>>> using pattern="common" --> <Valve >>>>>> className="org.apache.catalina.valves.AccessLogValve" >>>>>> directory="logs" prefix="localhost_access_log." suffix=".txt" >>>>>> pattern="%h %l %u %t "%r" %s %b" /> >>>>>> >>>>>> Is it possible to do this without programming (i.e. can I set the >>>>>> valve components to simply filter on an ip address or key word >>>>>> string (i.e. "Get /atb HTTP/1.0" and if that value is found in the >>>>>> request, can I chose to then NOT write that entry to the >>>>>> AccessLogValve). I have searched pretty thoroughly for some time on >>>>>> how to do this, but the documentation simply does not provide >>>>>> enough of an example on how to do this. I am not a programmer, but >>>>>> would think that filtering entries out of logs based on criteria >>>>>> would be a valuable feature to have. >>>>> >>>>> >>>>> >>>>> You have to have a way to set (or not) a request attribute in order to >>>>> use conditionIf/conditionUnless. One way to do it without writing any >>>>> of your own code is to use url-rewrite, which is more like >>>>> url-do-whatever: >>>>> http://tuckey.org/urlrewrite/ >>>>> >>>>> You can configure that to set request attributes under certain >>>>> criteria. Just have it set (or not) whatever attribute name you use >>>>> for your conditional logging and you should be good to go. >>>>> >>>>> Hope that helps, >>>>> - -chris >>>>> >>>> >>>> Chris, Looks a bit complicated (but then I guess life is a bit >> >> complicated >>>> >>>> ;-) I was hoping for something built in. In looking at the explanation >> >> and >>>> >>>> a little at the support websites, it looks as if this is something to >>>> rewrite what makes it to the actual webapps applications. I did not see >>>> where it was used to be able to filter out the main tomcat access logs >> >> (i.e >>>> >>>> being able to control something so early as the Request and built in >> >> Tomcat >>>> >>>> logging), but I guess it may be possible to do that. I will look into >> >> this >>>> >>>> further if I have the time. As Andre pointed out in a follow up post, I >>>> could just filter the access log into another file externally and do my >>>> cleanup that way. >>>> Thank you for taking the time to answer and provide something to look >> >> into >>>> >>>> further. >>> >>> >>> >>> I basically agree with André. And the URL rewrite filter is a nice and >> >> powerful tool that's useful to learn about, although it can't be easily >> integrated into a webapp from the outside (not moving it into the webapp >> itself). >>> >>> >>> If it happens that between your load balancer and Tomcat there is already >> >> an Apache web server and the forwarding from Apache to Tomcat is done by >> mod_jk, then you can set Tomcat request attributes from mod_jk by using >> JkSetEnv. You would use a RewriteRule probably with a RewriteCond to set an >> Apache environment variable for the requests that come from the LB, then >> use JkEnvVar to forward that variable, then use the conditionUnless for the >> Tomcat access log valve to suppress those requests. Using a seconds >> AccessLogValve with conditionIf would let you log those requests to a >> second log file. >>> >>> >>> I'm not saying that I would inject a new Apache/mod_jk into the picture >> >> just for that feature. But if it were already there ... >>> >>> >>> Regards, >>> >>> Rainer >>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>> For additional commands, e-mail: users-h...@tomcat.apache.org >>> >> All good thoughts, but no Apache. If it can't be done in Tomcat, I will >> likely just live without. > > > Triggered by another post today: Starting with Tomcat 8 there's the RewriteValve: > > http://tomcat.apache.org/tomcat-8.0-doc/rewrite.html > > And that is able to set request attributes via configuration. Look for "ENV" and "environment variable" because the RewriteValve was modelled after Apache httpd mod_rewrite, where the notion is environment variable. In Servlet land this was interpreted by the valve as request attribute. > > Totally forgot about it. > > > Regards, > > Rainer
Thanks for pointing out the option in Tomcat 8. I will look at it. I now have few options. Thanks to all for ideas. Jeff > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org >
