I have a CENTOS 6.6 x86_64 server running ConfigServer Firewall (installed by us) and Munin (installed by the datacentre).
CSF has recently (and for no apparent reason) started sending us warnings, at 5 minutes past the hour, about a suspicious file in /tmp/
Here's the file:
cd /tmp
ls -l
-rw------- 1 mailman munin 477736 Nov 9 22:35 undo.#prelink#.XAy6Bg
I've tried to find out what this might be from the Munin docs, but am mystified.
Can anyone shed any light on the purpose of this file?
Should I remove it, or whilelist the file in CSF to prevent further errors?
Any advice gratefully received.