yum update --security fail?

[kykwon]

Dear all
I have CentOS 6.7. i want to update security with yum as like
#> yum install yum-plugin-security
#>yum --security check-update
Loaded plugins: fastestmirror, refresh-packagekit, security, versionlock
Loading mirror speeds from cached hostfile
* base: ftp.kaist.ac.kr
* elrepo: ftp.ne.jp
* epel: mirror.premi.st
* extras: ftp.kaist.ac.kr
* updates: ftp.kaist.ac.kr
Limiting package lists to security relevant ones
No packages needed for security; 3 packages available

openldap-devel.x86_64 2.4.40-5.el6 base

So, i did
#> yum update --security
Loaded plugins: fastestmirror, refresh-packagekit, security, versionlock
Setting up Update Process
Loading mirror speeds from cached hostfile
* base: ftp.kaist.ac.kr
* elrepo: ftp.ne.jp
* epel: mirror.premi.st
* extras: ftp.kaist.ac.kr
* updates: ftp.kaist.ac.kr
Resolving Dependencies
Limiting packages to security relevant ones
No packages needed for security; 2 packages available

What the problme. how can i do for solve that.
please.....

[TrevorH]

The yum-plugin-security package does not work on CentOS and there have been several long and involved threads on the mailing list discussing this and the outcome is that it probably never will. The required metadata is not present in the CentOS yum repositories to allow it to function. EPEL does supply this data which is why you see some mentions of security updates available but it does not cover any of the packages in the CentOS repos.

[kykwon]

Thnak you for reaply.
Ok I got about it.