[CentOS] Re: how to change distro live?
dhawal at netmagicsolutions.com
Mon Jun 18 15:13:24 UTC 2007
Farkas Levente wrote:
> we've got many mandrake 8,9 and 10 system remotely. we'd like to
> remotely replace these systems to centos 5. we've 4 disk in them. one is
> the system drive (no need for raid) and there is free space on the
> remaining 3 disk. so what we think about:
> - download the new system to the data disks
> - install grub (mandrake has lilo) to boot the old system and reboot
> - create the old system in the data disk
> - update grub to boot the old system from the data disk and reboot
> - repartition the system disk
> - transfer the new system to the system disk
> - update grub to boot form new system disk and reboot.
> this seems to easy but has many very dangerous steps and we has only
> remote ssh access to the system. if we loose the connections we can't
> access the system anymore and we've to travel a lot! another constrain
> that we should have to do this very fast ie. it'd be nice if the system
> wouldn't be down for a long time.
> - what would be the best method for this?
> - what are the dangerous step here?
> - what would be the best way and format to transfer the new system to
> the disk (we think about an iso file)?
> - does anybody do such thing and what is his experience?
> thank you for your help in advance.
See koan, a helper program with cobbler http://cobbler.et.redhat.com/
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