https://bz.apache.org/bugzilla/show_bug.cgi?id=62924
Bug ID: 62924
Summary: tomcat-users.xml has open file descriptors and opens
tomcat-users.xml all the time
Product: Tomcat 9
Version: 9.0.13
Hardware: Other
OS: Linux
Status: NEW
Severity: major
Priority: P2
Component: Manager
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: -----
Hi everybody
Since tomcat 9.0.13 and the ability to monitor "tomcat-users.xml" was
introduced we encounter quite strange behaviour:
we run into "too many files open" exception after a certain time when tomcat is
running.
nothing changed on the apps which run on this instance, except the version of
tomcat (from 9.0.12 to 9.0.13)
I found now the following strange thing:
when doing "lsof" on the PID runnning tomcat, I see:
[gtt@tgttcn0:~/tomcat/logs:1061> lsof -p 16829 | grep tomcat-users | wc -l
260
a couple of seconds later:
[gtt@tgttcn0:~/tomcat/logs:1062> lsof -p 16829 | grep tomcat-users | wc -l
262
and about 20 seconds later:
[gtt@tgttcn0:~/tomcat/logs:1062> lsof -p 16829 | grep tomcat-users | wc -l
264
and nothing is really going on on the tomcat at the moment.
It looks like something is opening tomcat-users.xml all the time and does not
close it anymore....
Here the same "lsof" command on one of our servers running tomcat 9.0.12:
[gtt@pgttcn1:~:1008> lsof -p 26572 | grep tomcat-users | wc -l
0
thanks for having a look into this
Erich
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