Setup 3 node cluster

matthewaroth35

How to set up a 3 node cluster like scale? using old servers

dafyre

@matthewaroth35 said in Setup 3 node cluster:

How to set up a 3 node cluster like scale? using old servers

Can you give us more info on what you are trying to do? Scale does a lot, lol.

matthewaroth35

Well i have scale 3 node cluster already .. I want to build another one like scale out of my old hp g7 servers

travisdh1

You can't do it like @scale does it, because they customized DRBL to handle the storage backend. If you really want something like what Scale does, then you'll need to setup KVM with a DRBL storage backend on each node.

I think XenServer will do this with a 3 node cluster much easier, but I've never actually tested it as I've never had 3 nodes available at once.

dafyre

Are you looking to do Virtualization with it, or just to tinker and learn or what?

To start with, you'll need to come up with a way to share storage among at least 2 of the 3 nodes. I think the go to around here is DRBD for that if you want to keep it Linux.

scottalanmiller

@matthewaroth35 said in Setup 3 node cluster:

Well i have scale 3 node cluster already .. I want to build another one like scale out of my old hp g7 servers

You need Scale equipment to build a Scale cluster. You want to build a non-Scale hyperconverged cluster?

scottalanmiller

@travisdh1 said in Setup 3 node cluster:

You can't do it like @scale does it, because they customized DRBL to handle the storage backend. If you really want something like what Scale does, then you'll need to setup KVM with a DRBL storage backend on each node.

What the heck is DRBL? Diskless Remote Boot Linux is the only thing I know of with that acronym.

KVM would need something like CEPH to do something like Scale. CEPH is nowhere near on par with SCRIBE, though.

matthewaroth35

@scottalanmiller i want to build a non scale hyperconverge cluster. yes. I already bought scale. I want to use my old equipment and build a 3 node cluster "LIKE" scale.

scottalanmiller

@travisdh1 said in Setup 3 node cluster:

I think XenServer will do this with a 3 node cluster much easier, but I've never actually tested it as I've never had 3 nodes available at once.

Same issues, you'll need CEPH, StarWind or something similar.

scottalanmiller

@dafyre said in Setup 3 node cluster:

Are you looking to do Virtualization with it, or just to tinker and learn or what?

To start with, you'll need to come up with a way to share storage among at least 2 of the 3 nodes. I think the go to around here is DRBD for that if you want to keep it Linux.

DRBD is good but limits you to two nodes.

travisdh1

@scottalanmiller said in Setup 3 node cluster:

@travisdh1 said in Setup 3 node cluster:

You can't do it like @scale does it, because they customized DRBL to handle the storage backend. If you really want something like what Scale does, then you'll need to setup KVM with a DRBL storage backend on each node.

What the heck is DRBL? Diskless Remote Boot Linux is the only thing I know of with that acronym.

KVM would need something like CEPH to do something like Scale. CEPH is nowhere near on par with SCRIBE, though.

I'm mixing acronyms this afternoon. Should be CEPH as it seems everything I used to know has been rolled into that now.

scottalanmiller

@matthewaroth35 said in Setup 3 node cluster:

@scottalanmiller i want to build a non scale hyperconverge cluster. yes. I already bought scale. I want to use my old equipment and build a 3 node cluster "LIKE" scale.

Ah ha. Okay, well that's easier said than done, but it can be done. You have three free hypervisor choices: Xen, KVM and Hyper-V. KVM is by far the hardest here, so not likely what you are looking for, even though KVM is what Scale uses. Scale makes KVM easier, on its own it is not.

scottalanmiller

So Hyper-V or XenServer are your options. On Hyper-V you only have the choice of non-free Starwind with three nodes. On XenServer you have that option, plus others like CEPH and Gluster.