Do i really need Ganeti?

[Grant Tailor]

Here i am trying to install and setup ganeti on 1 server and haven't been successful...says alot how nice easy and straight forward installing Ganeti really is.

Anyways i am looking into going elsewhere and even before then, the big question is "Do i need Ganeti?"

Basically i just to manage 8 physical servers and i do NOT need ot want DRBD because it is more a waste of hardware than any redundancy at all...so i rather keep backup and enjoy using my hardware...so NO DRBD needed. So what exactly do i need Ganeti for especially if its going to be so much of a hassle installing one and getting it to work. Also Ganeti does not support snapshot at the moment which is like a basic requirement in any cloud platform today.

So thinking og going with plain libvirt/virsh CLI or even go ovirt route here

So let me know what Ganeti will do for me that virsh or ovirt cannot (remember i am not using DRBD!)

Thanks guys!!!!

[Guido Trotter]

I guess if you don't plan to do drbd nor shared storage of any sort and you don't care about moving instances between nodes the only thing Ganeti gives you is the cluster concept and the central management. If you're having so many problems and you don't plan to use the features perhaps indeed you shouldn't use it. :)

If you want to manage your 8 servers as one entity and plan to have dinner level of instance movement as needed Ganeti can help.

Regards,

Guido

[Grant Tailor]

What about ovirt? Even virsh allows you to migrate VMs between hosts...almost any software allows migration of VMs...its a given...only thing i can see Ganeti do is DRBD and it installing Ganeti is the the cleanest thing ever..i mean Ganeti should learn how to make software install and setup easy...i mean have you ever installed an application from .exe file on windows? I mean its the easiest thing other than using a mouse and keyboard...compare installing ovirt and Ganeti...its not even close!

[Grant Tailor]

*****Installing Ganeti is NOT the cleanest thing ever *****

made a typo above

[Marco Casavecchia M.]

Honestly,
I never had big issues in installing and run a plain ganeti cluster. I just followed the documentation that is rather well done.
I did unimaginable things with it, like reinstalling and upgrading a whole cluster (SO+kvm) with just the downtime of a reboot for my users.
To do the same things on VMWare, my collegues needed the support of a vmware partner and the presence of dedicated expensive hardware.

I admit that ganeti is not as easy to install as a "next, next,next" wizard.
Though, it's generally known that you can't migrate from windows to linux without a some experience on linux system administration.

Reguards.

[Grant Tailor]

dude am a linux engineer with RHCE
i used windows .exe just as an example duh
Good for you you have no iddues with Ganeti but it lacks so many features its not really worth it for me much anymore at least about to make the final move away to OVIRT!!!

http://www.ovirt.org/images/b/bf/OVirt-Login.png
http://www.ovirt.org/images/8/80/OVirt-Admin-Full.png
http://www.ovirt.org/images/2/20/OVirt-Admin-Banner-Only.png

[Marco Casavecchia M.]

Well,
I'm certified too but I'm closer to debian based distros and I understand the "headache" that can cause a switch to a completely different distro.

That said, In these cases I tend to stay closer to what is familiar to me, so I understand your motivations.

Reguards. :)

[Grant Tailor]

Mark my words
OVIRT is the future in this niche..just like KVM has overthrown Xen...watch OVIRT overthrow so many
i said it first!

[Grant Tailor]

Basically this niche comprises of Ganeti, Proxmox, Opennebula, Ovirt and others
Ovirt will low everyone out..just watch
Cloudstack and Openstack are just other annimals..so not in this niche

[candlerb]

On Saturday, 24 May 2014 06:51:45 UTC+1, Grant Tailor wrote:

Even virsh allows you to migrate VMs between hosts

It does. But it doesn't have a cluster-wide view of what VMs you want and how they are configured. This means:

1. You can end up with multiple copies of the XML definition on different hosts, some of which will be old/stale, and you won't know which is current.

2. You can accidentally start the same VM on multiple nodes and have fun watching the disk image getting corrupted. (The "sanlock" plugin provides a way to protect against this)

These are the main reasons why you might want something with a cluster-wide view.

[Grant Tailor]

Well what about OVIRT vs GANETI? feature for feature?
OVIRT does clustering as well and lots more than Ganeti does...yes or no?

[Jimmy Tang]

On Saturday, 24 May 2014 14:56:57 UTC+1, Grant Tailor wrote:

Well what about OVIRT vs GANETI? feature for feature?
OVIRT does clustering as well and lots more than Ganeti does...yes or no?

Heh, I use opennebula in work and ganeti for *other* stuff, I guess use what works for you.

Jimmy

[Marco Casavecchia M.]

I don't know ovirt well, though as far as I saw it's close to ganeti + gwm.. The most important difference that I noticed is that ganeti has no single point of failure.
For my production environment this makes a huge difference.

> On 24/mag/2014, at 15:56, Grant Tailor <thereal...@gmail.com> wrote:
>

[Vegard Hansen]

Probably.

I didn't look. If you want to compare them you could easily look that up. I'm pretty sure the team behind Ganeti didn't ever intend it to compete with other IaaS solutions on feature lists.

--
Kind regards,
Vegard