Hardware wise - try one server with CentOS Stream 8 and check that all hardware
is recognized and works as expected.
You can start with a single server and expand further. RH dropped Gluster
Support for their downstream solution (RHV) , yet oVirt doesn't have plans to
get rid of it.
The easiest for you would be to use SAN or NAS as storage. If that's not an
option, you can use GlusterFS - which is a distributed File System . The latter
needs a 10GBE NICs (1 Gigabit is OK, but don't expect much speed when writing
in the VMs).
oVirt supports GlusterFS in 2 modes:- replica 1 - a mode intended for a single
host setup- replica 3 (where you have 3 copies of your data) - where the
storage nodes should be multiple to 3. You can also have compute-only oVirt
nodes (those do not participate in GlusterFS but have CPU & RAM to host VMs)
If you configure HA VMs , the engine will take care to recover them on another
host. If you loose 2 out of 3 servers - GlusterFS will loose majority of the
bricks (term for a host+mount point combination) and will shutdown until
majority is restored.
In all cases - you should segregate the network for Storage and Compute
workloads (Gluster/NFS on separate network).
P.S.: iSCSI is also a storage option.
Best Regards,Strahil Nikolov
On Fri, Sep 2, 2022 at 9:29, Teemu Saarinen<teemu.saari...@netum.fi> wrote:
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Hi,
Our company is planning oftaking oVirt in into our environment. We would have a
few questions for that if you could guide us.
Hardware:
What would be the minimum configuration for us using oVirt?.Idea would be to
replace all our current Linux and Windows servers withoVirt. There are
currently 24 servers in use.
The goal would also be that the virtual servers could be migrated live and also
in the HA configuration, i.e. if onehardware crashes execution continues on the
other.
As far as I understand Ovirt enables this?
So we would like to know what kind ofhardware (minimum) we should have for this
size of environment?
Storagin:
Do all machines need a lot of hard disk space or is it enough to have only one
or two? I'm referring to shared storage. Can you also have storagin as HA?
Host:
What happens to HOST1 and HOST2 virtual machines if the oVirt host server
crashes?
Do they continue to operate without it, or do they crash at the same time?
Thank You!
Teemu S.
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