以下範例是從Centos 5 64-bit變更為Centos 5 32-bit
Assuming you currently have a Centos 5 64-bit that was installed by us (if you have or want 32-bit, set/use 32-bit accordingly).
Below will reinstall to Centos 5.6 64-bit, change it accordingly if you want other versions of centos.
1. SSH to your server and login as root
2. Type below:
3. Add to/Edit the grub menu.lst entry to load the pxe kernel (note: if you were already using grub you do not need to type again the first 2 lines)
nano -w /etc/grub.conf
in that file paste this in BETWEEN "hiddenmenu" and "title CentOS..." (IMPORTANT):
title Centos Install (PXE)
kernel /vmlinuz.cent.pxe vnc vncpassword=YOURPSW headless ip=YOURIP netmask=255.255.255.0 gateway=GATEWAYIP dns=220.127.116.11 ksdevice=eth0 method=http://vault.centos.org/5.6/os/x86_64/ lang=en_US keymap=us
YOURPSW with the VNC password you want setup
YOURIP with the ip of the box…
GATEWAYIP with the gateway assigned to your box
Hint: you can see the gateway ip by issuing
route -n | grep UG
once you have done this you need to count the number of times “title” appears in the file, press ctrl +x, and save the file
4. Reboot the server by typing
5. Assuming above is done correctly, you can then use vncviewer (download from realvnc.com) and connect to YOURIPHERE:1
And password is whatever you set above.