Re: Automatically compressing localhost_access_log after rotation
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Martin, On 8/4/17 5:08 AM, Martin Knoblauch wrote: > On Thu, Aug 3, 2017 at 7:16 PM, Christopher Schultz < > ch...@christopherschultz.net> wrote: > >> -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 >> >> Martin, >> >> On 8/3/17 5:47 AM, Martin Knoblauch wrote: >>> is there a way to compress the localhost_access_log.#.txt >>> file automatically after rotation? >> >> Not really. The file is rotated *during* log events, and stalling >> to compress a log file is probably not a great solution. >> >> > Hmm. Smart way would be to rotate the log, continue logging to the > new file and compress the old one "in the background". That way > stalling would not be an issue. Sure. But that requires more code, of course, and therefore more complexity. >> Alternatively/preferably is there a way to put the access >> logging >>> under "log4j"? >> >> Also not really, but if you are willing to write code, you can do >> it. The AccessLogValve handles its own logging to a file, but if >> you were to subclass AccessLogValve and override the "open" >> method and assign a value to the AccessLogValve.writer member >> that writes to a log4j logger, then I think you could probably do >> this. >> > > Writing my own class is clearly an option, but I wanted to first > check the already available options. > > >> I believe that log4j will stall your access log during the >> compression, though, so you might want to think about whether or >> not you want to implement it this way. >> >> > Need to check how they are doing it. We use rolling with > compression, but not on a high volume log like the access log. You'd have to check to see how log4j actually does things, but I think compression might happen in-line with the logging thread. I'm sure if varies greatly depending upon your log4j version. - -chris -BEGIN PGP SIGNATURE- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJZhO6hAAoJEBzwKT+lPKRY9OgP/iG+YKDbbG3w7SaKyvOSMlzK Y9yxQqgK0fpGO7XgMXKM0IuPh8G5EWwiNPUc5k0AbQNjCkNcTmTISzj8TUTu43HO eyPlVOWjZRfdvetL99AxhkEDaw1j7HdsL5fi+zDi440t8sS4z4RETeT5a8DE2Vti v80ER+EdAMJeydvOxMMGgk8nHal379aW95m1JHJQppC8V6wcbWnYr7TGVUjl+gDR SL9fiiymrgLYvC1WhSblKQaOEpzyfhoFm4IOTwG/M5jh/coPsFj7KGdpxels69MM B4dLdKwbECZbVJ2348rScrxjMevjRLkVlq38zw2kchk6gav9DjfF1i1nMd8piOoD FgpXgfjn7elq9C2jaKgGodfBdc/cw04ysoZgTRss71vfcL69WW/yQ6rHMUJH0XsM fqDmZWfXzwBBH6I4fGZuiH+Z+bzdsrSYBgWcJxlGtDE3Vf07oCljvb3W4GCXVdzq u0qdB+YWyU0daWEErdGl4AlwCmE21HSzzwz/4RdvMJHgxgMwTs2KfF6/KCP2S1PX Hpv5dGBSb8OWOZ8Y6I6N2Qo1VSME9WfGh4mU8X/r2rMPeBjRoOwVnG6OYPtCYSnl TKyPpGTHf/m30A6k3uGucYaSocyNvqmP9MqCfeHEAyG/eY3ig/BY1HW65Oel5vAM FzNKelDMwl4zqyYwDIr+ =5o3t -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Automatically compressing localhost_access_log after rotation
On 8/3/17 5:47 AM, Martin Knoblauch wrote: > is there a way to compress the localhost_access_log.#.txt file > automatically after rotation? There is, but maybe not one built into Tomcat. I have a daily cron job to run a script which looks for older logs and ZIPs them: LOGDIR=/var/log/tomcat-7 ZIP_OPTS='-9mou' # localhost for LOG in $(find ${LOGDIR} -mtime +7 -name localhost.-??-??.log | sort); do YEAR=$(echo ${LOG} | cut -d. -f2 | cut -d- -f1) zip ${ZIP_OPTS} /var/biglogs/tomcat/localhost.log.${YEAR}.zip ${LOG} done I have a bunch of these blocks in the script, so I ought to make one into a function and just call it N times with various arguments, but this works for me. -- Mark H. Wood Lead Technology Analyst University Library Indiana University - Purdue University Indianapolis 755 W. Michigan Street Indianapolis, IN 46202 317-274-0749 www.ulib.iupui.edu signature.asc Description: PGP signature
Re: Automatically compressing localhost_access_log after rotation
On Thu, Aug 3, 2017 at 9:43 PM, Leon Rosenbergwrote: > On Thu, Aug 3, 2017 at 8:16 PM, Christopher Schultz < > ch...@christopherschultz.net> wrote: > > > -BEGIN PGP SIGNED MESSAGE- > > Hash: SHA256 > > > > Martin, > > > > On 8/3/17 5:47 AM, Martin Knoblauch wrote: > > > is there a way to compress the localhost_access_log.#.txt file > > > automatically after rotation? > > > > Not really. The file is rotated *during* log events, and stalling to > > compress a log file is probably not a great solution. > > > > > Alternatively/preferably is there a way to put the access logging > > > under "log4j"? > > > > Also not really, but if you are willing to write code, you can do it. > > The AccessLogValve handles its own logging to a file, but if you were > > to subclass AccessLogValve and override the "open" method and assign a > > value to the AccessLogValve.writer member that writes to a log4j > > logger, then I think you could probably do this. > > > > I believe that log4j will stall your access log during the > > compression, though, so you might want to think about whether or not > > you want to implement it this way. > > > > I think at least logback is performing file operations asynchronously to > log events so maybe using slf4j over logback would be a more reliable way. > > regards > Leon > Hi Leon, thanks for the hint. Will look into it. Cheers Martin -- -- Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de
Re: Automatically compressing localhost_access_log after rotation
On Thu, Aug 3, 2017 at 7:16 PM, Christopher Schultz < ch...@christopherschultz.net> wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA256 > > Martin, > > On 8/3/17 5:47 AM, Martin Knoblauch wrote: > > is there a way to compress the localhost_access_log.#.txt file > > automatically after rotation? > > Not really. The file is rotated *during* log events, and stalling to > compress a log file is probably not a great solution. > > Hmm. Smart way would be to rotate the log, continue logging to the new file and compress the old one "in the background". That way stalling would not be an issue. > Alternatively/preferably is there a way to put the access logging > > under "log4j"? > > Also not really, but if you are willing to write code, you can do it. > The AccessLogValve handles its own logging to a file, but if you were > to subclass AccessLogValve and override the "open" method and assign a > value to the AccessLogValve.writer member that writes to a log4j > logger, then I think you could probably do this. > Writing my own class is clearly an option, but I wanted to first check the already available options. > I believe that log4j will stall your access log during the > compression, though, so you might want to think about whether or not > you want to implement it this way. > > Need to check how they are doing it. We use rolling with compression, but not on a high volume log like the access log. > What is your operating system? If it were me, I think I'd write a cron > job to check the directory for uncompressed, rotated log files and > compress them in a separate process. > > Linux. Sure, we can deploy Cron to do the compression. It just adds another external process to an already complex setup. But I guess nothing in life is free :-) > > I am on Tomcat 7.0.62 (no, do not tell me to update. I know. I want > > to. But I am not allowed to. So, do not tell me. Please :-) > > You should upgrade :) > I told you not to tell me :-) Thanks Martin -- -- Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de
Re: Automatically compressing localhost_access_log after rotation
On Thu, Aug 3, 2017 at 8:16 PM, Christopher Schultz < ch...@christopherschultz.net> wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA256 > > Martin, > > On 8/3/17 5:47 AM, Martin Knoblauch wrote: > > is there a way to compress the localhost_access_log.#.txt file > > automatically after rotation? > > Not really. The file is rotated *during* log events, and stalling to > compress a log file is probably not a great solution. > > > Alternatively/preferably is there a way to put the access logging > > under "log4j"? > > Also not really, but if you are willing to write code, you can do it. > The AccessLogValve handles its own logging to a file, but if you were > to subclass AccessLogValve and override the "open" method and assign a > value to the AccessLogValve.writer member that writes to a log4j > logger, then I think you could probably do this. > > I believe that log4j will stall your access log during the > compression, though, so you might want to think about whether or not > you want to implement it this way. > > I think at least logback is performing file operations asynchronously to log events so maybe using slf4j over logback would be a more reliable way. regards Leon
Re: Automatically compressing localhost_access_log after rotation
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Martin, On 8/3/17 5:47 AM, Martin Knoblauch wrote: > is there a way to compress the localhost_access_log.#.txt file > automatically after rotation? Not really. The file is rotated *during* log events, and stalling to compress a log file is probably not a great solution. > Alternatively/preferably is there a way to put the access logging > under "log4j"? Also not really, but if you are willing to write code, you can do it. The AccessLogValve handles its own logging to a file, but if you were to subclass AccessLogValve and override the "open" method and assign a value to the AccessLogValve.writer member that writes to a log4j logger, then I think you could probably do this. I believe that log4j will stall your access log during the compression, though, so you might want to think about whether or not you want to implement it this way. What is your operating system? If it were me, I think I'd write a cron job to check the directory for uncompressed, rotated log files and compress them in a separate process. > I am on Tomcat 7.0.62 (no, do not tell me to update. I know. I want > to. But I am not allowed to. So, do not tell me. Please :-) You should upgrade :) Actually, 7.0.62 is pretty good. Most people say "I'm using Tomcat 7.0.13" or whatever. Your version is at least younger than my kids. You might want to make your decision makers aware of several important security issues with Tomcat 7.0.x that have been patched after the version you are using. Have a look at the changelog[1] specifically for versions 7.0.75 and 7.0.77. Depending upon your use of Tomcat's various features, versions 7.0.68, 7.0.70, 7.0.73, and 7.0.78 might be concerning to you. - -chris [1] http://tomcat.apache.org/security-7.html -BEGIN PGP SIGNATURE- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJZg1phAAoJEBzwKT+lPKRYLy0P/jzNNe/5dCzCZSpwkkKobamt /eroSyMkR+8CiU2i6AbnGrXmhqDUsif3UQJgBik76wscK9V+BqCatcLEMxY2R9Yu 1EOFAexBwC3mhjwXJLjxITMiECmIEhvwxykb+n7EbXQ+OP7xA7b6MHoGAKjXKc8v KFnnSKUr90D9tRYjGoKqPdDYaaVjo7qZVx6kHwLCl3aw+NGlrDMlzQYkY/mQzaBc IDO3YhbQss39GDLGrdF02kNuDkK6xwbikSvObwS7dbA2suGyUUyfweU5AA8BkUi0 hrvwgfMuHJFxKF++LiR2AJDga+qpT+3cYt06wzTc4bNjk7FLrnF5s6Y624nddoPV 9kzfuhSoTWA4xWlX8pIOMkx9B7TrDZT/Y2hnnUZuvBDQLpvgM4qtWgRS/CR+4l+0 0ScxLLwzTHeZGLnjut7bN1JLjDUopt4Su+loPeO11AfFbkhhEbrk42RM68Q4FzfP 2cnHK+lKGHhwhrFIiw5l7cpir4UJyuFjM1Bz9AJ98xnpROqbYXTeSfwMpSZfLAf2 pANppcqc0HczZvSJY9BfxY9UCgoLVGc9UeUd1NV5ecb57GkEcElXriHBAPOonrbQ 0xCNLp1f6gLIWzpwrrBSMPe61x6zJMxl0pb3c6jpKnDUQnCeoP4YK9rERYv2giw1 fUEQn+EFIqRfNuKmKt5j =fZ5s -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Automatically compressing localhost_access_log after rotation
Hi, is there a way to compress the localhost_access_log.#.txt file automatically after rotation? Alternatively/preferably is there a way to put the access logging under "log4j"? I am on Tomcat 7.0.62 (no, do not tell me to update. I know. I want to. But I am not allowed to. So, do not tell me. Please :-) Thanks Martin -- -- Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de