CentOS virt - Jan 2012 - New Tutorial - RHCS + DRBD + KVM; 2-Node HA on EL6

Hi all,

  I'm happy to announce a new tutorial!

https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial

  This tutorial walks a user through the entire process of building a
2-Node cluster for making KVM virtual machines highly available. It uses
Red Hat Cluster services v3 and DRBD 8.3.12. It is written such that you
can use entirely free or fully Red Hat supported environments.

Highlights;
* Full network and power redundancy; no single-points of failure.
* All off-the-shelf hardware; Storage via DRBD.
* Starts with base OS install, no clustering experience required.
* All software components explained.
* Includes all testing steps covered.
* Configuration is used in production environments!

  This tutorial is totally free (no ads, no registration) and released
under the Creative Common 3.0 Share-Alike Non-Commercial license.
Feedback is always appreciated!

-- 
Digimer
E-Mail:              digimer at alteeve.com
Freenode handle:     digimer
Papers and Projects: http://alteeve.com
Node Assassin:       http://nodeassassin.org
"omg my singularity battery is dead again.
stupid hawking radiation." - epitron

This is sweet, I am in need for doing something for a SMB and nothing is
out there that is affordable for small busineesses, will look into this.

On Tue, Jan 3, 2012 at 8:29 AM, Digimer <linux at alteeve.com> wrote:
> Hi all,
>
>  I'm happy to announce a new tutorial!
>
> https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial
>
>  This tutorial walks a user through the entire process of building a
> 2-Node cluster for making KVM virtual machines highly available. It uses
> Red Hat Cluster services v3 and DRBD 8.3.12. It is written such that you
> can use entirely free or fully Red Hat supported environments.
>
> Highlights;
> * Full network and power redundancy; no single-points of failure.
> * All off-the-shelf hardware; Storage via DRBD.
> * Starts with base OS install, no clustering experience required.
> * All software components explained.
> * Includes all testing steps covered.
> * Configuration is used in production environments!
>
>  This tutorial is totally free (no ads, no registration) and released
> under the Creative Common 3.0 Share-Alike Non-Commercial license.
> Feedback is always appreciated!
>
> --
> Digimer
> E-Mail:              digimer at alteeve.com
> Freenode handle:     digimer
> Papers and Projects: http://alteeve.com
> Node Assassin:       http://nodeassassin.org
> "omg my singularity battery is dead again.
> stupid hawking radiation." - epitron
> _______________________________________________
> CentOS-virt mailing list
> CentOS-virt at centos.org
> http://lists.centos.org/mailman/listinfo/centos-virt
>
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On 01/03/2012 09:43 AM, Tom Bishop wrote:
> This is sweet, I am in need for doing something for a SMB and nothing is
> out there that is affordable for small busineesses, will look into this.
Feel free to ask if you have any questions. :)

-- 
Digimer
E-Mail:              digimer at alteeve.com
Freenode handle:     digimer
Papers and Projects: http://alteeve.com
Node Assassin:       http://nodeassassin.org
"omg my singularity battery is dead again.
stupid hawking radiation." - epitron

?

Thanks! This is great - I've been planning and am?half-way though creating
such a cluster, but I've been using?Fedora15/16 as?Centos6 wasn't out
when I started.?Any idea if?this will work with?Fedora as a host OS, or does it
have to be RHEL/Centos?
?
-----Original message-----
To: CentOS mailing list <centos at centos.org>; CentOS virtualization
<centos-virt at centos.org>;
From: Digimer <linux at alteeve.com>
Sent: Tue 03-01-2012 14:29
Subject: [CentOS-virt] New Tutorial - RHCS + DRBD + KVM; 2-Node HA on EL6
Hi all,

?I'm happy to announce a new tutorial!

https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial

?This tutorial walks a user through the entire process of building a
2-Node cluster for making KVM virtual machines highly available. It uses
Red Hat Cluster services v3 and DRBD 8.3.12. It is written such that you
can use entirely free or fully Red Hat supported environments.

Highlights;
* Full network and power redundancy; no single-points of failure.
* All off-the-shelf hardware; Storage via DRBD.
* Starts with base OS install, no clustering experience required.
* All software components explained.
* Includes all testing steps covered.
* Configuration is used in production environments!

?This tutorial is totally free (no ads, no registration) and released
under the Creative Common 3.0 Share-Alike Non-Commercial license.
Feedback is always appreciated!

-- 
Digimer
E-Mail: ? ? ? ? ? ? ?digimer at alteeve.com
Freenode handle: ? ? digimer
Papers and Projects: http://alteeve.com
Node Assassin: ? ? ? http://nodeassassin.org
"omg my singularity battery is dead again.
stupid hawking radiation." - epitron
_______________________________________________
CentOS-virt mailing list
CentOS-virt at centos.org
http://lists.centos.org/mailman/listinfo/centos-virt
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On 01/03/2012 10:20 AM, Clint Redwood wrote:
>  
> 
> Thanks! This is great - I've been planning and am half-way though
> creating such a cluster, but I've been using Fedora15/16 as Centos6
> wasn't out when I started. Any idea if this will work with Fedora as a
> host OS, or does it have to be RHEL/Centos?
It should work, more or less, as-is on Fedora. Do note though that
things are changing rapidly and that Fedora is already at the end of the
3.1 version, about to go 3.2, where EL6 is (and will remain) on 3.0.

Also, I can not recommend ever using Fedora in production as a server.
The support cycle is far too short and the testing not nearly as
extensive as EL6 proper. I've tested several times on Fedora, and
inevitably run into gotchas.

So in short; I *strongly* recommend using an EL6 distro.

Cheers!

-- 
Digimer
E-Mail:              digimer at alteeve.com
Freenode handle:     digimer
Papers and Projects: http://alteeve.com
Node Assassin:       http://nodeassassin.org
"omg my singularity battery is dead again.
stupid hawking radiation." - epitron

On 01/03/2012 10:29 AM, Digimer wrote:
> Hi all,
> 
>   I'm happy to announce a new tutorial!
> 
> https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial
Hello Digimer,

Thanks for sharing this.  I might try it in a couple of months as I'm
not ready yet (need to grasp some concepts/technologies first).  I also
haven't used KVM but I have some experience with VMware (vSphere Clusters).

For vSphere clusters you need a shared storage system:  ideally (in
preference order) you'll be using a  FC SAN, iSCSI SAN or a NAS (serving
NFS).  I'm interested in the DRBD part here.  Did you use it because you
didn't have access to a shared storage system? or is it a requirement
for a particular functionality you wanted?  Have you done it before with
a shared system? Any considerable performance difference (DRBD vs
shared-storage)?

Thanks!

Best regards,
Jorge

El 03/01/2012 11:29 a.m., Digimer escribi?:
>   I'm happy to announce a new tutorial!
>
> https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial
Thanks for this excellent tutorial! It's a great job.
I will test soon.

Fernando M.

great doc?i will try

On 1/3/12, Digimer <linux at alteeve.com> wrote:
> Hi all,
>
>   I'm happy to announce a new tutorial!
>
> https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial
>
>   This tutorial walks a user through the entire process of building a
> 2-Node cluster for making KVM virtual machines highly available. It uses
> Red Hat Cluster services v3 and DRBD 8.3.12. It is written such that you
> can use entirely free or fully Red Hat supported environments.
>
> Highlights;
> * Full network and power redundancy; no single-points of failure.
> * All off-the-shelf hardware; Storage via DRBD.
> * Starts with base OS install, no clustering experience required.
> * All software components explained.
> * Includes all testing steps covered.
> * Configuration is used in production environments!
>
>   This tutorial is totally free (no ads, no registration) and released
> under the Creative Common 3.0 Share-Alike Non-Commercial license.
> Feedback is always appreciated!
>
> --
> Digimer
> E-Mail:              digimer at alteeve.com
> Freenode handle:     digimer
> Papers and Projects: http://alteeve.com
> Node Assassin:       http://nodeassassin.org
> "omg my singularity battery is dead again.
> stupid hawking radiation." - epitron
> _______________________________________________
> CentOS-virt mailing list
> CentOS-virt at centos.org
> http://lists.centos.org/mailman/listinfo/centos-virt
>

-- 


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