[ale] RH cert training recommendations?

Rich Faulkner rfaulkner at Tux86.org
Thu Apr 12 12:27:58 EDT 2012


Thanks Andrew!

Thankfully I have no small amount of h/w to do this with and can build
VM's and bare-metal systems as will.  Have plenty of routers so will
reference your notes as I build....

Brought my dual-Xeon server to work today to work on...if I get a chance
that is!  Keeping very busy today....

RinL


On Thu, 2012-04-12 at 10:17 -0400, Andrew Wade wrote:

> Rich,
> 
> One of the key elements for studying for and passing the RHCE is
> having a good
> test enviornment.  I reccomend the following:
> 
> You can do this with any virtualization technology (KVM, Xen, etc.),
> but I used
> VMWare Workstation
> 
> 1)  Set up VMWare Workstation and install three guests (centos 6.x)
> 
> 2)  Set up snapshot of the fresh install
> 
> 3)  Set the VMs to be bridged off your current adapter (so they can
> get the same
> IP segement and interact with each other)
> 
> 4)  Setup a Centos Server 6.x running in run level 5 to access your
> other guest
> VMs  (mimic your rhce test enviornment)
> 
> 5)  SSH into the Guest VMs as if it was a real scenario (no XWindows)
> 
> Go through the exercises/labs and feel free to screw up since you can
> simply
> restore from the last snapshot. When it comes to the
> tcp wrappers and iptables stuff, you'll want to get creative and setup
> another
> routable subnet at home to attach some of your VMs to. 
> The easiest way for most people to do this is get a second wifi router
> and plug
> it into your primary wifi router.  Set it up
> to be a NAT device that re-broadcasts a new subnet.  Then in VMWare
> attach your
> USB wifi to your guest VM and setup network on its
> wlan0.  That way one guest VM will be in another subnet, but still be
> able to
> route its way to communicate with the other VMs on
> the origianl subnet.
> 
> 
> At this point you can sucessfully test tcp wrappers
> ie /etc/hosts.deny   sshd :
> 192.168.1. : deny   (I think they syntax is right, I'd have to double
> check).
> 
> 
> This kind of setup will allow you to do most of the stuff needed
> (except for replicating a NIS enviornment, but that's for another
> post!),
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