[Linux-cluster] To SELinux or not to SELinux ?

[Nicolas Ross]

>> So, for a cluster, using fencing, gfs, and all the needed tools to run
> a cluster, is there
>> any reason not to use selinux ? I am looking to see if cluster
> operator use or do not
>> use selinux...
>
> Beware that "permissive" mode, far from being benign, can be as
> expensive as having SELinux enabled.  See
> http://www.mail-archive.com/linux-cluster@redhat.com/msg08317.html for
> some details on GFS and extended attributes.

Oh... I didn't tought of performance influence... That alone is enough to 
keep it off completly. We will be hosting a high-volume site where every 
millisecond counts. That site is composed of about a million files of 
different sorts. So, any added delay in accessing a file is not an option.