On 08/12/2015 05:43 μμ, Bryan Horstmann-Allen wrote:
+------------------------------------------------------------------------------
| On 2015-12-08 17:17:09, George Mamalakis wrote:
|
The lower the level the better. For example, FiFo's "solution" with LeoFS
is very close to what we need (even though it's not at the hypervisor's
level), but the problem with it needs us to set the redundancy
configuration during the design phase which is somewhat difficult for us,
since our setup is expected to grow. As I stated in my original email, I
haven't found the SDC's section on how to accomplish high availability, so
that's what I'm trying to understand through this list.
qemu in illumos/SmartOS does not support live migration. Nor do we have live
migration with zones (as does Solaris 11.)
The abstraction for HA in SmartOS is assumed to be higher up -- at the app
level. You should be architecting your aps in such a way they are resilient to
the loss of a zone/VM _and_ a physical node.
SDC itself has HA components, but still assumes you are implementing a load
balancing tier (which you can run on your compute fleet) for pieces of it.
https://docs.joyent.com/private-cloud/resilience
Which means that the boot order is random? Or do they start based on when
they were created (eg. older first)?
They all effectively boot at once, see /lib/svc/method/svc-zones. If your apps
require boot time orchestration, use something like ZK/Consul/etcd (or whatever
you prefer) to manage that.
Cheers.
OK, Brian,
I think you answered most of my questions. I'll take a look into the
resources you proposed and decide what to do based on my findings.
Thanks for your help!
George.
--
George Mamalakis
IT and Security Officer,
Electrical and Computer Engineer (Aristotle Univ. of Thessaloniki),
PhD (Aristotle Univ. of Thessaloniki),
MSc (Imperial College of London)
School of Electrical and Computer Engineering
Aristotle University of Thessaloniki
phone number : +30 (2310) 994379
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