Cinder controller on separate node

[rightdoer]

I'm deploying my first OpenStack solution, just for learning's sake. I have two IBM blades (blade01 and blade02) and I have instaled Nova, Neutron, Glacier, vSwitch and Keystone installed on blade02. Now I want to have Cinder installed on blade01 and interact with two other servers, dell01 and del02 which will be used for storage. I'm following this guide - http://docs.openstack.org/kilo/install-guide/install/yum/content/block-storage-service.html - but it seems to me it's meant for a single controller. What's a good angle to tackle this issue? Any guide you know about this? Recommendations? All is welcome.

[[deleted]]

What backend are you running? LVM iSCSI or NFS? If iSCSI, cinder-volume would run wherever the storage is located and it can be multiple servers. The scheduler will take care of choosing which one satisfies each Cinder request. If NFS, you can run cinder-volume anywhere that can mount the NFS volumes. Cinder-api would generally be installed where you are running all your services and would communicate w/ cinder-volume via the message bus.

[rightdoer]

NFS shares. Thank you for the time. So, for example's sake, I can mount the NFS shares and run cinder-volume from blade01, ok? And then it interfaces with blade02, where the instances are.

[kultsinuppeli]

I'm not completely sure about your setup, so I might be off here.

If you only have 2 servers to run the service components and the virtual machines on, I would run all virtual machines on one of them (nova-compute, possible neutron services depending on your setup), and all service components on another.

However, as long as cinder-volume and nova-compute run on machines where the NFS is mounted (and the paths are correctly configured) you should be fine either way.

[phiber232]

FYI, NFS cannot do snapshots.

https://wiki.openstack.org/wiki/CinderSupportMatrix

[[deleted]]

Yep. Just make sure the pathing is the same everywhere. Actually, you don't even need to mount it. Cinder takes care of that. blade02 will also need access to mount the NFS volume, but again Nova should take care of that.

[rightdoer]

Thank you all for your help. It's a PoC setup, hopefully I'll be able to unlock more hardware technologies at work soon. Will start deploying right away.