Re: [Xen-users] Xen Configuration questions
Joseph L. Casale wrote:
I've been using RHEL 5 for Xen servers in production. I don't
live-migrate right now because I'm not using (or rather, didn't use in
my last contract) network based Xen images, but I did keep the
configurations distributed on all the servers for load balancing and
restoration from backup.
1). Is RHEL & Xen ready for prime time? (is it production ready, will
I sleep at night?)
2). Each Xen instance will have a LUN on the iSCSI. Should I connect
the LUN on Domain0 and then have the DomU load it or should I have
each DomU run iSCSI directly with the SAN? I want to enable live
migrate between the blades.
3). Are there any pre-built Xen 'Appliances' for common things like
4). Should I use rsync between the blades to syn the xen configs to I
can live migrate guest machines between the blades?
My primary concern is #1, if it isn't stable I'll look to VMWare or
Virtuozzo. I have a machine running Virtuozzo already and it works
ok, Would rather run something open though, Linux has served me well
the last 17 years.
I too am curious about these exact questions. I am new to both Linux and Xen
though. I can say I have used vmware for these same platforms in your exact
scenario with an iSCSI san but am wanting to move to Xen for cost reasons. If
you find the answers to these questions off list, kindly update the thread as I
am anxiously awaiting direction from experienced users myself :)
I'm not aware of Xen appliances, but for DNS servers you can use a
stripped down RHEL with bind and nscd pretty trivially. Stripping an
RHEL system to bare bones is a pain due to the dependency hel and
massive overpopulation of the "Basic" installation. Frankly, a
bare-bones install doesn't even need Perl, but try teaching the RPM
dependency tree not do that. And try telling an RHEL installer that no,
you don't *WANT* NIS and PCMCIA and Bluetooth and a bunch of other silly
things in a Xen environment.
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