"André Warnier" <a...@ice-sa.com> wrote: >Christopher Schultz wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA256 >> >> André, >> >> On 10/25/13, 7:18 AM, André Warnier wrote: >>> For example, a utility such as logrotate, in the sysadmin world, is >>> like a gift of God. Most server-like programs allow logrotate to >>> rotate their logfiles, compress old ones, remove even older ones, >>> etc. to keep things running smoothly over time. It's a simple >>> thing, but it saves many hours that would otherwise have to be >>> dedicated to monitoring and reacting to such repetitive >>> occurrences. >>> >>> Tomcat, at this moment, does not really allow that. >> >> It does, but it's not terribly obvious how to do it. >> >> Here are some ways to do it: >> >> 1. Modify catalina.sh to pipe | instead of redirect > >> 2. Use "catalina.sh start | chronolog" or whatever >> 3. Configure logrotate to copy-and-truncate >> 4. Set CATALINA_OUT=/dev/null before launching >> 5. Set up a named pipe and set CATALINA_OUT to it before launching >> (Plus have another process drain that pipe) >> >>> That is because there is no simple mechanism to tell Tomcat to >>> relinquish control of its current logfiles for a moment, short of >>> stopping Tomcat completely and restarting it (which interrupts the >>> service, sometimes for a significant amount of time). >> >> What happens in httpd if I write a module that writes to stdout >> instead of the proper httpd-provided logging mechanisms? > >The module's stdout/stderr is redirected to the Apache error log. > >> >>> So my request is simple (at least to express) : can someone among >>> the Tomcat luminaries not imagine a mechanism by which Tomcat >>> would, on request from an external program or script, do something >>> like the Apache httpd does during a "soft reload" : wait for the >>> current requests to terminate, close all logfiles and re-open them >>> ? For example : there already exist a "shutdown port", and a bunch >>> of "Listeners". Could there not be a "logs rotate port" or a >>> "logrotate listener" ? >> >> It seems like this could be done via the manager webapp. >> >>> I am not underestimating the possible difficulty of the task, and >>> probably tackling such an issue is ultimately less rewarding for a >>> developer than implementing the latest in webapp or HTTP >>> technology. >>> >>> But many sysadmins worldwide would be grateful if this came to pass >>> and I am sure that it would do a great deal to increase the >>> popularity of Tomcat among them. >> >> Honestly, the only time this is really a problem is when catalina.out >> is filling-up with junk, right? It's always awkward when that >happens. >> > >Yes, but the point is : the sysadmins do not generally control the code >of the webapps. >They are just told to run them. And there are a lot of webapps that >write to stdout. >That's precisely the case of the last OP who posted about this. But >not only /his/ >problem, by any means.
Would this help solve the problem? https://issues.apache.org/bugzilla/show_bug.cgi?id=53930 If so, the number of votes for an enhancement is one of the factors I take into account when trying to figure out which enhancement request to look at next. Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
