Upgrading Debian Packages from Xwiki LTS Tomcat8 to Xwiki LTS Tomcat 9

[GOhrner]

@GOhrner

It still logs

[2019-12-31 16:05:49] [info] 2019-12-31 16:05:49,263 [main] ERROR o.x.e.i.ServletEnvironment     - Configured permanent directory [/mnt/cstore/var_lib_xwiki/data] is not writable.
[2019-12-31 16:05:49] [info] 2019-12-31 16:05:49,264 [main] WARN  o.x.e.i.ServletEnvironment     - Falling back on [/var/cache/tomcat9/Catalina/localhost/xwiki] as the permanent directory.
[2019-12-31 16:05:49] [info] 2019-12-31 16:05:49,265 [main] INFO  o.x.e.i.ServletEnvironment     - Using permanent directory [/var/cache/tomcat9/Catalina/localhost/xwiki]

The solution to this issue is detailed here:

Permanent directory is ignored and data is in Tomcat work directory

I found the solution to this issue. In my case, it turns out that Debian packages Tomcat configured to be sandboxed, with write access only to certain directories, /var/lib/xwiki/data not being one of them. To solve, I had to create a systemd service override file to allow Tomcat to have write access to /var/lib/xwiki/data. mkdir /etc/systemd/system/tomcat9.service.d/ echo -e "[Service]\nReadWritePaths=/var/lib/xwiki/data" > /etc/systemd/system/tomcat9.service.d/override.conf systemctl daemon…

Summary: The Debian tomcat9 package uses systemd sandboxing features and disallows writing to most directories by default.