The backups for the CA Agile Central On-Premises appliance are failing.
Looking at the /home/appuser/rally_backup.log file shows the following entry:
cat /dev/null
ls -l /dev/null
crw-rw-rw- 1 root root 1, 3 Apr 18 01:34 /dev/null
ls -dl dev
drwxr-xr-x 19 root root 3180 Aug 23 10:26 dev
rm -f /dev/null; mknod -m 666 /dev/null c 1 3
chmod a+x /dev
chmod a+r /dev