Proper way: after kernel update [xen]

Kernel Diary: this just to remind me proper steps to do after dom-0 kernel updates

1. log in into each dom-U and run

#yum update -y

this will update kernel devel and kernel headers on dom-U

failing to do this will make iptables not able to start

2. fix xen kernel script

this will update latest kernel on dom-U (do this on every dom-U before rebooting them!!)

# /script/fixxenkernel

http://blog.apis17.info/2011/01/fix-xen-kernel.html

3. xm list

this will list all dom-U

4. xm reboot

this will reboot dom-U server. or just reboot entire system.

if you have iptables problem after dom-U reboot please install kernel-headers

#yum -y install kernel-devel kernel-headers

iptables: Table does not exist (do you need to insmod?)

then,

#modprobe ip_tables

hope this will save some time to figure up why iptables not working.

remember: i'm using hypervm. fixxenkernel scripts only available on hypervm