-----Original Message-----
From: Emmanuel Bourg <[email protected]>
Date: Monday, June 22, 2020 at 18:14
To: Tomcat Users List <[email protected]>, Brian <[email protected]>
Subject: Re: File "catalina.out" not being created/populated when using Tomcat
9.0.31 + Ubuntu 20.04, and content goes to the Ubuntu syslog instead?
Le 22/06/2020 à 18:43, Brian a écrit :
> I'm not really an expert with Linux. It would seem to me that the "adm"
group (to which syslog seems to belong) lacks a write permission
Indeed, rsyslog in Ubuntu runs as syslog:adm and needs special
permissions to write to /var/log/tomcat9. This issue should be reported
to Ubuntu.
The tomcat9 package in Debian isn't affected by this issue because
rsyslogd runs as root.
> OK, I did it and the write permission was added to the adm group. I
restarted Tomcat.... and it worked, the catalina.out file got created! However,
after I restarted the whole Ubuntu, I discovered that the permissions went back
to how there were (not write for adm). Why is that?
The permissions on this directory are managed by systemd-tmpfiles. The
tomcat9 package defines the expected permissions in
/usr/lib/tmpfiles.d/tomcat9.conf and the permissions are enforced when
the system starts.
It's possible to override the default settings, you have to copy the
configuration file to /etc/tmpfiles.d/ and change the permissions on
/var/log/tomcat9 from 2750 to 2760:
cp /usr/lib/tmpfiles.d/tomcat9.conf /etc/tmpfiles.d/
sed -i s/2750/2760/ /etc/tmpfiles.d/tomcat9.conf
The write permissions for the adm group will then be persistent.
Hi Emmanuel,
Thanks a lot for your help, but unfortunately I think that something is still
not working.
I copied the file running the cp command, and then edited the created file to
replace "2750" with "2760", then restarted Ubuntu.... But I still have the same
problem, catalina.out never gets created.
Then I tried editing the original file (/usr/lib/tmpfiles.d/tomcat9.conf)
replacing "2750" with "2760", then restarted Ubuntu.... But I still have the
same problem.
I verified that the permissions stay correct, I mean giving write permission to
the adm group after I restart Ubuntu, and that DOES work! When I perform a "ls
-l /var/log/", this is what I see for the "tomcat9" directory:
drwxrwS--- 3 tomcat adm 4096 Jun 23 11:31 tomcat9
Finally, I checked the syslog and this is what I found:
Jun 23 12:27:43 ip-172-31-92-155 systemd[1]: Starting Apache Tomcat 9 Web
Application Server...
Jun 23 12:27:43 ip-172-31-92-155 systemd[1]: Started Apache Tomcat 9 Web
Application Server.
Jun 23 12:27:43 ip-172-31-92-155 tomcat9[594]: NOTE: Picked up
JDK_JAVA_OPTIONS: --add-opens=java.base/java.lang=ALL-UNNAMED
--add-opens=java.base/java.io=ALL-UNNAMED
--add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
Jun 23 12:27:43 ip-172-31-92-155 rsyslogd: file
'/var/log/tomcat9/catalina.out': open error: Permission denied [v8.2001.0 try
https://www.rsyslog.com/e/2433 ]
Jun 23 12:27:44 ip-172-31-92-155 tomcat9[594]: Jun 23, 2020 12:27:44 PM
org.apache.catalina.startup.VersionLoggerListener log
Jun 23 12:27:44 ip-172-31-92-155 tomcat9[594]: INFO: Server version name:
Apache Tomcat/9.0.31 (Ubuntu)
.....
It seems that rsyslogd is still unable to deal with
"/var/log/tomcat9/catalina.out".
What could be wrong now? Do you have any ideas?
Brian
Emmanuel Bourg
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