Editing Virtuozzo / Linux Reference (section)

= Updating kernel on virt =

We now use [[#vzup2date|vzup2date]] to update systems and kernels. What follows is what we used to do when we had to download kernels and install manually on old systems:


1. install kernel and modules
<pre># rpm -ivh vzkernel-enterprise-2.4.20-021stab028.12.777.i686.rpm \
vzmodules-enterprise-2.4.20-021stab028.12.swsoft.i686.rpm
vzkernel-smp          ##################################################
vzmodules-smp       ##################################################</pre>

DO NOT USE the "rpm -Uhv" command to install the kernel, otherwise all the previously installed kernels may be removed from your system. 

2. update lilo/grub

Lilo:

 vi /etc/lilo.conf
 
rename old Virtuozzo kernel label from "linux+virtuozzo" to "virtuozzo_old"
and add a new entry pointing to the newly installed virtuozzo kernel image.
For example:

<pre>prompt
timeout=50
default=linux+virtuozzo
append="debug panic=5 console=tty console=ttyS0,38400"
boot=/dev/sda
map=/boot/map
install=/boot/boot.b
message=/boot/message
linear

image=/boot/vmlinuz-2.4.18-3smp
        label=linux
        initrd=/boot/initrd-2.4.18-3smp.img
        read-only
        root=/dev/sda1

image=/boot/vmlinuz-2.4.18-3
        label=linux-up
        initrd=/boot/initrd-2.4.18-3.img
        read-only
        root=/dev/sda1

image=/boot/vmlinuz-2.4.20-020stab009.5.777-enterprise
        label=2.4.20-9.5.777
        read-only
        root=/dev/sda1

image=/boot/vmlinuz-2.4.20-020stab009.8.777-enterprise
        label=2.4.20-9.8.777
        read-only
        root=/dev/sda1

image=/boot/vmlinuz-2.4.20-020stab009.21.777-enterprise
        label=2.4.20-9.21.777
        read-only
        root=/dev/sda1

image=/boot/vmlinuz-2.4.20-020stab009.24.777-enterprise
        label=2.4.20-9.24.777
        read-only
        root=/dev/sda1

image=/boot/vmlinuz-2.4.20-021stab028.3.777-enterprise
        label=2.4.20-28.3.777
        read-only
        root=/dev/sda1

image=/boot/vmlinuz-2.4.20-021stab028.5.777-enterprise
        label=old_linux+vz
        read-only
        root=/dev/sda1

image=/boot/vmlinuz-2.4.20-021stab028.12.777-enterprise
        label=linux+virtuozzo
        read-only
        root=/dev/sda1</pre>

With this configuration, the new kernel is the default kernel to use at boot. The original kernel entry has been retained with the label "old_linux+vz ".

Grub:

 vi /boot/grub /menu.lst

Add new entry at the top.
For example:

<pre>serial --unit=0 --speed=38400
terminal --timeout=10 serial console
default=0
timeout=10
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title Virtuozzo 2.6.1 (2.4.20-021stab028.12.777-enterprise)
        root (hd0,0)
        kernel /boot/vmlinuz-22.4.20-021stab028.12.777-enterprise root=/dev/sda1 console=tty0 \ console=ttyS0,38400
title Virtuozzo 2.6.1 (2.4.20-021stab028.3.777-enterprise)
        root (hd0,0)
        kernel /boot/vmlinuz-2.4.20-021stab028.3.777-enterprise root=/dev/sda1 console=tty0 \ console=ttyS0,38400
title Red Hat Linux (2.4.18-3smp)
        root (hd0,0)
        kernel /boot/vmlinuz-2.4.18-3smp ro root=/dev/sda1
        initrd /boot/initrd-2.4.18-3smp.img
title Red Hat Linux-up (2.4.18-3)
        root (hd0,0)
        kernel /boot/vmlinuz-2.4.18-3 ro root=/dev/sda1
        initrd /boot/initrd-2.4.18-3.img
title Linux with Virtuozzo 2.5
        root (hd0,0)
        kernel /boot/vmlinuz-2.4.20-020stab009.3.777-smp ro root=/dev/sda1
title vz-enterpriseo
        root (hd0,0)
        kernel /boot/vmlinuz-2.4.20-020stab009.21.777-enterprise ro root=/dev/sda1
title vz-enterprise
        root (hd0,0)
        kernel /boot/vmlinuz-2.4.20-020stab009.24.777-enterprise ro root=/dev/sda1 \ console=tty0 console=ttyS0,38400</pre>

3. run the lilo (if using lilo)

<pre># lilo
Added linux
Added linux-up
Added virtuozzo_old
Added linux+virtuozzo *</pre>

4. reboot the server
 shutdown -r 23:05

when it comes time for the shutdown, run [[VPS_Management#stopvirt|stopvirt]] to get things shut down faster