Tomcat 9 on Ubuntu 18.04

[Sean Carte]

I'm having trouble getting tomcat 9 to work with dspace, yet I have no problems with tomcat 8. This is on Ubuntu 18.04.

When using tomcat 9, no log files are created in /dspace/log and the dspace GUI indicates an internal error.

This is my (working) configuration for tomcat 8:

ls -ld /dspace/
drwxr-xr-x 16 tomcat8 tomcat8 4096 May 20 11:07 /dspace/

/etc/default/tomcat8

TOMCAT8_USER=tomcat8
TOMCAT8_GROUP=tomcat8

JAVA_OPTS="-Djava.awt.headless=true -Xmx1024m -Xms64M -XX:+UseConcMarkSweepGC -Dfile.encoding=UTF-8"

#TOMCAT8_SECURITY=no

For tomcat 9, the user is 'tomcat', so this is what I have for tomcat 9:

ls -ld /dspace/
drwxr-xr-x 16 tomcat tomcat 4096 May 20 11:07 /dspace/

/etc/default/tomcat9

JAVA_OPTS="-Djava.awt.headless=true -Xmx1024m -Xms64M -XX:+UseConcMarkSweepGC -Dfile.encoding=UTF-8"
SECURITY_MANAGER=false

I tried adding (variations of)

TOMCAT9_USER=tomcat
TOMCAT9_GROUP=tomcat

to /etc/default/tomcat9, but that hasn't made any difference.

The contexts are identical (I copied /etc/tomcat9/Catalina/localost/*.xml to /etc/tomcat8/Catalina/localhost/):

/etc/tomcat9/Catalina/localhost/ROOT.xml

<?xml version='1.0'?>
<Context
        docBase="/dspace/webapps/jspui"
        reloadable="true"
        cachingAllowed="false"
/>

/etc/tomcat9/Catalina/localhost/solr.xml

<?xml version='1.0'?>
<Context
        docBase="/dspace/webapps/solr"
        reloadable="true"
        cachingAllowed="false"
/>

/etc/tomcat9/Catalina/localhost/jspui.xml

<?xml version='1.0'?>
<Context
        docBase="/dspace/webapps/jspui"
        reloadable="true"
        cachingAllowed="false"
/>

No errors are reported in /var/log/tomcat9/catalina.2021-05-20.log, yet it seems like tomcat9 does not have access to /dspace, and I can't figure out why.

Does anybody know where I've gone wrong?

Sean

[dieg...@gmail.com]

You can find the solution in the "Edit" section of the most voted question in https://stackoverflow.com/questions/56827735/how-to-allow-tomcat-war-app-to-write-in-folder

Tomcat 9 only writes to specific folders. You have to add new dirs to 'ReadWritePaths' directive, in your case "/dspace/log"

[Sean Carte]

Thank you, diegoucha!

As someone else in that thread commented, I had no idea that systemd could do that.

Sean

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