[CentOS] OS upgrade from CentOS 6.x version.

> Hi,
>
> Currently I am running CentOS 6.4 on all my production environment. Lets 
> say after six months there is CentOS 6.5. Do i need to update it to the 
> latest version and is it recommended to use yum update command to update 
> to 6.5 on a production environment without testing. Please help me 
> understand.
>

'yum update' updates to the latest minor version (like 6.4 to 6.5), unless 
you specifically don't prevent this.

Updates to the next major version (like 5.x to 6.x) are more challenging.

--
TiN