I have a vps server with 130GB hard disk. Recently, the server is crash down, I access ssh and use
Filesystem Size Used Avail Use% Mounted on /dev/vzfs 130G 130G 0 99% / none 2.0G 4.0K 2.0G 1% /dev
du -sh /* I find
root fold with 59GB. then
du -sh /root/*, a long list with some file like
... 43M /root/core.7856 59M /root/core.7859 59M /root/core.7862 43M /root/core.7883 43M /root/core.7885 43M /root/core.7889 59M /root/core.7892 59M /root/core.7904 43M /root/core.7906 59M /root/core.7913 43M /root/core.7915 59M /root/core.7940 59M /root/core.7942 43M /root/core.7947 43M /root/core.7951 ...
I access my server with
fileZilla, 1204 core.* files create in recent 3 days.
So what is centos /root/core.* files? How are they created? Could I delete them without damage my server? And how to avoid them to be created again?
FIX THE PROBLEM
The problem caused by linux mail system. I changed
/etc/mail/trusted-users permission in
etc/mail/submit.cf line 552. then, no
/root/core.* files be created again.