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Nesting RHEL7 KVM on VMware Workstation 12

Recently I wished to build a Red Hat Enterprise Linux 7 (RHEL7) appliance with 2 KVM-virtualized guests. Essentially a type 2 hypervisor (VMM) on top of another type 2 hypervisor. I installed RHEL7 on VMware Workstation 12 and configured it as a Virtualization Server. It was a smooth install without any issues. However I was surprised to find that KVM (Kernel-based Virtual Machine) simply did not work at all and lsmod did not even list the KVM kernel modules. It turns out that you need to do two changes to your RHEL7 guest configuration file in order for KVM support

RHEL7 XFS Is A Step Backwards Forensically

Red Hat changed the default filesystem in Red Hat Enterprise Linux 7 (RHEL 7) to XFS. In RHEL 6, the default filesystem was EXT4. The rational for this change, according Denise Dumas, Director of Software Engineering for Red Hat was because “it is a better match for our enterprise customers”. I agree with this position, which incidentally is the position SUSE have maintained for a long time, except that forensically it is somewhat of a step backwards. You can examine a XFS file’s metadata using xfs_db but it is much easier to use the xfs_io utility. Just like xfs_db, xfs_io

IPA – Indentity Policy Audit 3.1

Identity Policy Audit (IPA) 3.1 was released in recent weeks. IPA is also known as Red Hat Enterprise Identity Management and is part of RHEL6 along with SSSD. Identify Management (IdM) describes the management of individual identifiers, their authentication, authorization, and privileges within or across system and enterprise boundaries with the goal of increasing security and productivity. If you’re not familiar with IPA, you should become familiar with it. It is basically the IdM for POSIX systems. This release is significant because it adds Active Directory (AD) trusts and Server 2012 support. You now can run an IPA Domain that

Set up local RPM Installation Repository

There are a number of ways of installing additional RPM packages from installation media. However, if your network is fast and you are installing the same packages on a number of systems, it sometimes is easier to set up a simple local package repository and use yum to install the packages from there. This post shows you how to do this. Copy the new packages, or even the contents of an entire distribution to a suitable subdirectory on a local webserver. For example, if you are using an Apache webserver on RHEL or Fedora, suitable locations would probably be /var/www/html/repos/rhel6/

UEFI Booting 64-bit Redhat Enterprise Linux 6

I recently decided to UEFI install the second beta of 64-bit Red Hat Enterprise Linux, version 6 (RHEL6 Beta 2) to see what was the current state of UEFI booting as far as Red Hat was concerned. The platform I choose to use was an Intel DX48BT2 motherboard which has unofficial support for UEFI booting. By unofficial support, I mean that you can configure the firmware to support UEFI but, according to all reports that I have read, Intel will not help you if you encountered any problems. How a company like Intel can get away with such a policy