[CentOS] Virtualising legacy CentOS 4.x servers

[Peter]

CentOS 4 should virtualize just fine under Xen.  You will need to
install the kernel-xenU package if you want to run it as a PV domain
(recommended).  At the time I think that Xen was RedHat's virt of choice.

While I haven't tested C4 explicitly of late, it should run just fine
under Xen4Centos in the dom0.  You can backup without shutting down the
domain from the dom0 if you want if you use LVM and just take a
snapshot, then just mount the snapshot and backup from there.


Peter


On 05/15/2014 05:39 AM, Simon Banton wrote:
> Dear all,
> 
> I look after a number of CentOS 4.x servers running legacy 
> applications that depend on ancient versions of various things (such 
> as MySQL 3.x) and which can't be upgraded without non-trivial 
> development effort.
> 
> I've been considering virtualising them and as a test have been 
> trialling with a company that uses Parallels Cloud Server 6.
> 
> However, I've run into a roadblock in that the Parallels Tools 
> installer in PCS6 require a version of glibc higher than that which 
> is available in CentOS 4.x (v2.5 required versus v2.3.4 installed).
> 
> Without the guest OS tools installed it's impossible to migrate a VM 
> from node to node or back it up without shutting the VM down first, 
> which is less than useful.
> 
> So I have two questions:
> 
> 1) Does anyone know if there is a version of the PCS6 Tools built 
> against glibc 2.3.4 available anywhere?
> 
> 2) Is there an alternative virtualisation environment I should be 
> looking at which fully supports CentOS 4.x as a guest OS? And if so, 
> does anyone have recommendations for a hosting supplier that offers 
> that environment (ideally UK based).
> 
> Many thanks
> Simon
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