install centos 5

PKumar · 10-22-2007, 04:44 AM

Hi

I have a server running CentOS 4 with internet on it.
This server does not have floppy drive or CD drive (its Remote server)
How do i install CentOS 5 on it.

Thanks,
--

Prabhat

billymayday · 10-22-2007, 05:02 AM

nfs, http, ftp

Have a look at the RedHat documentation for how to do it

PKumar · 10-22-2007, 05:26 AM

Actually my problem is that, I have remote server currently its on running state.
What I need,Files that required to boot the system and that boot program can start install from ISO Image over any mirror site or from my hard drive or local network.

billymayday · 10-22-2007, 05:38 AM

Can you do yum upgrade?

PKumar · 10-22-2007, 05:53 AM

thanks billymayday,
that's will update packages that include's kernel, but I want to go for fresh installation. Is there any way?

billymayday · 10-22-2007, 06:32 AM

Actually upgrade should be able to update from v4 to 5, but outside of that I'm afraid I don't know. yum update just updates stuff

mickyg · 10-22-2007, 06:43 AM

Is there a specific reason you want to go for a fresh install instead of an distro upgrade?

AFAIK doing a distro upgrade through YUM is basically the same as a fresh install, with the added advantage that your configuration files shouldn't get over-written.

P.S. it's worth me highlighting here that I've never actually done a distro upgrade on CentOS, only Kubuntu.

brianmcgee · 10-22-2007, 06:50 AM

PXE [1] install may be an option if you have no other boot devices than your network.

[1] http://www.redhat.com/docs/manuals/e...de/ch-pxe.html

PKumar · 10-25-2007, 05:12 AM

Hi, I got the sol,
I am writting here what excataly I have done.

Since, I have net connection on current system,

1. I have downloaded ISO image of centos 5 (1 CD only)
2. mkdir /mnt/temp
3. mount -o CentOS-5.0-x86_64-bin-1of7.iso /mnt/tmp
4. cp -a /mnt/tmp/isolinux/vmlinuz /boot/vmlinuzMy
5. cp -a /mnt/tmp/isolinux/initrd.img /boot/initrdMy.img
6. umount /mnt/tmp
7. Add entry to your /etc/grub.conf
title Fedora Core 2 Installation
root (hd0,0) kernel /boot/vmlinuzMy
initrd /boot/initrdMy.img
8. Reboot system
9. Now your is booted and ready for new installation.
10. Select installation method you want (FTP, HTTP or NFS probably). I have selected http
11. Give your Name server and ipdetails.
12. Give site & Dir (I have given)
mirror.stanford.edu
/yum/pub/centos/5/os/x86_64/

I think its ok to install now

even I have done post on my blog