Red Hat Enterprise Linux 6 FCoE Support.
FCoE Support in the Kickstart File
When using a kickstart file to install Red Hat Enterprise Linux 6.4, with the new fcoe kickstart option you can specify which Fibre Channel over Ethernet (FCoE) devices should be activated automatically in addition to those discovered by Enhanced Disk Drive (EDD) services.
Red Hat Enterprise Linux 6 Installation Guide has more Kickstart Options.
Red Hat Enterprise Linux 64-Bit Support
Red Hat Enterprise Linux 6 supports 64-bit processors; these processors can theoretically use up to 18 exabytes of memory. As of general availability (GA), Red Hat Enterprise Linux 6 is tested and certified to support up to 8TB of physical memory.
The size of memory supported by Red Hat Enterprise Linux 6 is expected to grow over several minor updates, as Red Hat continues to introduce and improve more features that enable the use of larger memory blocks. Examples of such improvements (as of Red Hat Enterprise Linux 6 GA) are:
Huge pages and transparent huge pages
Non-Uniform Memory Access improvements
Red Hat Enterprise Linux 6.3 Authentication
Support for central management of SSH keys.
Previously, it was not possible to centrally manage host and user SSH public keys. Red Hat Enterprise Linux 6.3 includes SSH public key management for Identity Management servers as a Technology Preview. OpenSSH on Identity Management clients is automatically configured to use public keys which are stored on the Identity Management server. SSH host and user identities can now be managed centrally in Identity Management.
Package: sssd-1.8.0-32
How to Ensure Red Hat GPG Key is Installed.
To ensure that the system can cryptographically verify update packages (and also connect to the Red Hat Network to receive them if desired), run the following command to ensure that the system has the Red Hat GPG key properly installed:
Example below shows on a Centos Server.
[centos@mail ~]$ rpm -q –queryformat “%{SUMMARY}\n” gpg-pubkey
gpg(CentOS-6 Key (CentOS 6 Official Signing Key) )
gpg(Dag Wieers (Dag Apt Repository v1.0) )
[centos@mail ~]$
The command should return the string: gpg(Red Hat, Inc. (release key ) for redhat systems.
virtualization with Red Hat Enterprise Linux - System requirements.
This chapter lists system requirements for successfully running virtualization with Red Hat Enterprise Linux. Virtualization is available for Red Hat Enterprise Linux 5 Server.
The requirements for virtualization vary depending on the type of hypervisor. The Kernel-based Virtual Machine (KVM) and Xen hypervisors are provided with Red Hat Enterprise Linux 5. Both the KVM and Xen hypervisors support Full virtualization. The Xen hypervisor also supports Para-virtualization.
Minimum system requirements
6GB free disk space
2GB of RAM.
Recommended system requirements
6GB plus the required disk space recommended by the guest operating system per guest. For most operating systems more than 6GB of disk space is recommended.
One processor core or hyper-thread for each virtualized CPU and one for the hypervisor.
2GB of RAM plus additional RAM for virtualized guests.
