Open Infrastructure

h1. The ungleich virtualisation handbook

h2. Introduction

* A place is autonomous data center and does not share resources with another place.

* The storage clusters are separated so that they don't influence each other

* Networks are place local -> changing the place means changing the IP addresses

h2. Migrating a VM from one place to another

* Find the VM id (*onevm list* in opennebula)

* Stop the VM (*onevm stop <vimid>*)

* Locate the disk in ceph

** Locate the correct ceph pool: *ceph osd lspools*

** rbd list -p <CEPH POOL> | grep <VMID>

** This gives you the *image name*

* Login to the *destination place* and find out the target ceph pool

** Locate the correct ceph pool: *ceph osd lspools* (this is the TARGET POOL)

* Transfer the disk into the other place ceph cluster

** rbd export <CEPH POOL>/<IMAGE NAME> - | ssh server-in-other-place "rbd import <TARGET POOL>/import-<VMID>"

h2. See Also

* For storage see [[The ungleich ceph handbook]]