I have an m1.large paravirtual EC2 instance running Debian Wheezy. It appears that I have two kernel packages installed: one 2.6 kernel and one 3.2 kernel. The 2.6 kernel is the one that is enabled and running.
$ uname -a
Linux nodename 2.6.32-312-ec2 #24-Ubuntu SMP Fri Jan 7 18:30:50 UTC 2011 x86_64 GNU/Linux
I'd like to switch to the newer kernel and I'm not sure how to do that. If this were bare hardware, I'd make sure that grub knew about the new kernel, make it the default, and (if necessary) install the bootloader onto the boot sector of the primary disk.
Since this is EC2, I'm not sure what the procedure should be.
The file /boot/grub/menu.lst exists, and contains:
default 0
timeout 3
title EC2
root (hd0)
kernel /boot/vmlinuz-2.6.32-5-xen-amd64 root=/dev/sda1 4
initrd /boot/initrd.img-2.6.32-5-xen-amd64
That on-disk kernel does exist, but isn't the currently-running one. Also, the grub2 package isn't installed and /boot/grub/menu.lst hasn't been updated since 2011. So, I expect it's not relevant, here.
What's the process for enabling a new kernel on Debian/EC2? What about being able to fall-back to a known-working kernel if the new one doesn't work?
0 Answers