I am running Tomcat 9 on an Ubuntu 20.04 OS using OpenJDK 64-Bit Server VM (build 25.275-b01, mixed mode). When I try to gather diagnostics info using jstat, jstack, etc, I see PID not found. jps also cannot identify the Tomcat process id.
I have checked several posts like one, two, three, four, etc, but none of the answers given in these helped me to solve my problem!
Even though I am passing the username with which the Tomcat process is running, jstat cannot find that process: sudo -u tomcat jstat -gc 476174 5000
In case it matters:
- I can see that the Tomcat process is started with
-Djava.io.tmpdir=/tmp
This folder is owned by root user but has full permissions(777) enabled. - When the Tomcat process is started, I can see a folder with name
systemd-private-e6d8b5dc224848f8a64a3e943ac2e9c4-tomcat9.service-UH5knj
(the last few chars after service- change every time the process is restarted) getting created with owner as root (probably because I start tomcat service usingsudo service tomcat9 start
) and this folder has permission ofrwx------
.
Any hints on how to solve this issue?
Thanks, Shobhana