Proxmox VE Kernel: Difference between revisions

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(updated for 2.x)
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=Introduction=
=Introduction=
Proxmox VE supports currently three kernel branches, each one with minor feature differences. Beginning with 1.9 the 2.6.32 is the default and highly recommended branch. (Proxmox VE 0.9 beta till Proxmox 1.4 used 2.6.24, Proxmox 1.5 used 2.6.18).
Proxmox VE supports currently one kernel branch.


A Proxmox VE cluster master can manage a mixed kernel setup. For example, you can run two nodes with 2.6.18 and two nodes with 2.6.32 and also nodes with 2.6.35. Depending on the features, some migrations are only possible between identical kernels.
A Proxmox VE cluster can manage a mixed kernel setup. Depending on the features, some migrations are only possible between identical kernels or identical KVM versions.


For correctly effecting a kernel change, it may be necessary to '''edit''' the '''/etc/fstab''' file for the '''/boot''' mount.
=Kernel 2.6.32=
 
=Kernel 2.6.18=
*Old Stable OpenVZ
*Old Stable KVM
 
==How to install 2.6.18==
<pre>aptitude update
aptitude safe-upgrade
aptitude install proxmox-ve-2.6.18</pre>
 
To make sure that you boot into the new kernel, check /boot/grub/menu.lst. Now reboot and check if the system is running the right kernel.
 
proxmox-ve-2.6.18:~# pveversion -v
pve-manager: 1.9-24 (pve-manager/1.9/6542)
running kernel: 2.6.18-6-pve
proxmox-ve-2.6.18: 1.8-15
pve-kernel-2.6.18-6-pve: 2.6.18-15
qemu-server: 1.1-32
pve-firmware: 1.0-13
libpve-storage-perl: 1.0-19
vncterm: 0.9-2
vzctl: 3.0.28-1pve5
vzdump: 1.2-15
vzprocps: 2.0.11-2
vzquota: 3.0.11-1
pve-qemu-kvm-2.6.18: 0.9.1-15
 
=Kernel 2.6.24 (outdated)=
'''Note''': not compatible to the latest vzctl 3.0.26 (missing vzeventd), => you need to switch to a newer branch
*OpenVZ
*KVM
 
==How to install 2.6.24==
<pre>aptitude update
aptitude safe-upgrade
aptitude install proxmox-ve-2.6.24</pre>
 
To make sure that you boot into the new kernel, check /boot/grub/menu.lst. Now reboot and check if the system is running the right kernel.
 
=Kernel 2.6.32 (recommended)=
*Latest KVM (with KSM)
*Latest KVM (with KSM)
*Stable OpenVZ
*Stable OpenVZ
*based on RHEL6x
*based on RHEL6x
*Default Kernel branch since Proxmox VE 1.6
*Default Kernel branch since Proxmox VE 1.6
==How to install 2.6.32==
<pre>aptitude update
aptitude safe-upgrade
aptitude install proxmox-ve-2.6.32</pre>
To make sure that you boot into the new kernel, check /boot/grub/menu.lst. Now reboot and check if the system is running the right kernel.
<pre>proxmox-ve-2.6.32:~# pveversion -v
pve-manager: 1.9-26 (pve-manager/1.9/6567)
running kernel: 2.6.32-7-pve
proxmox-ve-2.6.32: 1.9-55+ovzfix-2
pve-kernel-2.6.32-7-pve: 2.6.32-55+ovzfix-2
qemu-server: 1.1-32
pve-firmware: 1.0-15
libpve-storage-perl: 1.0-19
vncterm: 0.9-2
vzctl: 3.0.29-3pve1
vzdump: 1.2-16
vzprocps: 2.0.11-2
vzquota: 3.0.11-1
pve-qemu-kvm: 0.15.0-2
ksm-control-daemon: 1.0-6
proxmox-ve-2.6.32:~# uname -a
Linux .... 2.6.32-7-pve #1 SMP Mon Feb 13 07:33:21 CET 2012 x86_64 GNU/Linux</pre>
=Kernel 2.6.35=
The 2.6.35 was introduced to support KSM. As KSM works now also with the default 2.6.32, this kernel branch will get no more updates, all users should switch to 2.6.32.
*Latest KVM
*No OpenVZ
==How to install 2.6.35==
<pre>aptitude update
aptitude safe-upgrade
aptitude install proxmox-ve-2.6.35</pre>
To make sure that you boot into the new kernel, check /boot/grub/menu.lst. Now reboot and check if the system is running the right kernel.
proxmox-ve-2.6.35:~# pveversion -v
pve-manager: 1.9-24 (pve-manager/1.9/6542)
running kernel: 2.6.35-1-pve
proxmox-ve-2.6.35: 1.8-13
pve-kernel-2.6.35-2-pve: 2.6.35-13
qemu-server: 1.1-32
pve-firmware: 1.0-13
libpve-storage-perl: 1.0-19
vncterm: 0.9-2
vzctl: 3.0.28-1pve5
vzdump: 1.2-15
vzprocps: 2.0.11-2
vzquota: 3.0.11-1
pve-qemu-kvm: 0.15.0-1
ksm-control-daemon: 1.0-6


[[Category: HOWTO]][[Category: Technology]][[Category: Installation]]
[[Category: HOWTO]][[Category: Technology]][[Category: Installation]]

Revision as of 13:27, 15 September 2012

Introduction

Proxmox VE supports currently one kernel branch.

A Proxmox VE cluster can manage a mixed kernel setup. Depending on the features, some migrations are only possible between identical kernels or identical KVM versions.

Kernel 2.6.32

  • Latest KVM (with KSM)
  • Stable OpenVZ
  • based on RHEL6x
  • Default Kernel branch since Proxmox VE 1.6
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