That makes a lot of sense... I don't know that I really needed the full suite, as I don't think I'm aiming for that level of HA for the hosted systems. I'll look into it. Can you provide me any better links than what a google search would provide? Thanks! David. On Tue, 19 Jul 2011, Emmanuel Noobadmin wrote:
On 7/19/11, David Ehle <ehle@agni.phys.iit.edu> wrote:
KVM/libvirt makes moving running VM's from one host to another a no brainer, but I'm trying to figure out the right way to be able to take a the storage backend for maintenance without disrupting the VMs.
Right now I'm thinking something like KVM + libvirt + heartbeat/corosync + pacemaker + DBRM on Ubuntu 10.04 with 3 or 4 nodes - 2 hosts, 2 storage, or 1 host, 1 host + storage, 1 storage.
Personally, I had been planning to do it with mdadm multi-path & RAID 1 over iSCSI. Seems to be a more straightforward solution than using a full HA setup if the purpose is to ensure storage remains available when a node is down (for maintenance or otherwise).