We have learned that when Metacat is located on a Ceph mount, Tomcat will fail to start when the system is rebooted because the mount is not ready at runtime. This can be solved by adding the Ceph mount location to the RequiresMountsFor= line in the [Unit] section of the Systemd service file.

The metacat documentation and upgrade notes should add that the following line should be in the /etc/systemd/system/tomcat9.service file under [Unit]:

RequiresMountsFor=/var/log/tomcat9 /var/lib/tomcat9 /var/repos/{REPO}