tomcatpermissionsfile-permissionssystemdumask

set umask for Tomcat via tomcat.service in SystemD

I am trying to set a custom umask for a tomcat 8 instance, tried to make it the good way by using the UMask directive in systemd tomcat unit as seen here without luck.

I'd like to set a 022 umask cause the company dev needs to access tomcat / application logs and they are not in the same group as the tomcat user....

the crazy thing is that the systemd doc says :

Controls the file mode creation mask. Takes an access mode in octal notation. See umask(2) for details. Defaults to 0022.

But the logs (application / tomcat) are set to 640 (not the expected 755) :

-rw-r----- 1 top top 21416 Feb  1 09:58 catalina.out

My service file :

# Systemd unit file for tomcat
[Unit]
Description=Apache Tomcat Web Application Container
After=syslog.target network.target

[...]

User=top
Group=top
UMask=0022

[Install]
WantedBy=multi-user.target

Any thoughts about this ?

Thanks

Solution

  • Try adding UMASK as Environment variable into tomcat's service file:

    [Service]
...
Environment='UMASK=0022'
...

    Default catalina.sh is checking for environment's $UMASK:

    # Set UMASK unless it has been overridden
 if [ -z "$UMASK" ]; then
  UMASK="0027"
 fi
 umask $UMASK

    (It seems to me, that UMask from systemd is not used by Tomcat, but I am not completely sure.)