LAB: Hardware requirements.

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According to your hardware, you’ve got two main options:
– if your hardware (PC, Mac, etc) runs a 32-bit x86 processor with at least 2GB of memory, use Virtual Box; this is not the right option because you will not be able to experiment KVM virtualization and some advanced scenarios with two servers but it’s better than nothing.
– if you’ve got a hardware running a 64-bit x86 processor with virtualization capability (Intel VT-x or AMD-V*) and at least 3GB of memory/50GB of disk space, install RHEL6 or Centos 6 and use KVM (Centos 6 works very well).

My advice: buy a second-hand HP N40L (or HP N54L) with 4GB of memory ($200-250) and a DVD drive. It comes with a 250GB hard drive that is more than enough and you don’t need to add another network card. After passing your RHCSA/RHCE exams, you can reconvert it into a VMware ESX or a NAS (you get i/o at 100MB/s and can put 4-to-6 hard drives inside).

*To check if your Intel processor’s got VT-x virtualization capabilities, type:

# grep vmx /proc/cpuinfo

To check if your AMD processor’s got AMD-V virtualization capabilities, type:

# grep svm /proc/cpuinfo

Intel VT-d or AMD-Vi virtualization capabilities improve virtualization performances (they allow direct access to the hardware) but are not mandatory for KVM use (see wikipedia for more information).

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RHCSA7: Task of the day

Allowed time: 10 minutes.
Create an EXT4 file system mounted under /vol based on a logical volume of 100MB.
Reduce the size to 60MB.

RHCE7: Task of the day

Allowed time: 8 minutes.
Set up an iScsi target based on a fileio backstore of 100MB called /opt/shareddata with CHAP authentication (username=usr/password=pwd), xfs filesystem and standard firewall configuration.

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