Update vzkernel newbie

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Revision as of 02:58, 3 June 2016 by Ndi (talk | contribs)
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Update only vzkernel on Centos. Read till the end before proceed.

Check the bootlist:

cat  /boot/grub/grub.conf

Proceed with update:

yum update vzkernel

Check the bootlis again and note that new kernel appeare to load at the next boot:

cat  /boot/grub/grub.conf

For any case count how much active vps now:

vzlist | wc -l

You may save the output in order to be able to compare it with the same command output after reboot/all vm start

vzlist | wc -l >/tmp/vzlist.txt
vzlist >>/tmp/vzlist.txt 

Reboot:

reboot

Once reboot finished take a look into /var/log/vzctl.log and /var/log/messages you may do it in two separte ssh sessions with tail -f command.

update vzctl vzquota ploop for better workaround.

    • NOTE** If you see messaged like this during module update:
 Cleanup    : vzkernel-2.6.32-042stab090.5.x86_64                                                                                                                                                                                           3/4 
dkms: removing: sysdig 0.1.84 (2.6.32-042stab090.5) (x86_64)
-------- Uninstall Beginning --------
Module:  sysdig
Version: 0.1.84
Kernel:  2.6.32-042stab090.5 (x86_64)
------------------------------------- 
 Status: Before uninstall, this module version was ACTIVE on this kernel.
Removing any linked weak-modules
 sysdig-probe.ko:
 - Uninstallation
  - Deleting from: /lib/modules/2.6.32-042stab090.5/extra/
  - Original module
  - No original module was found for this module on this kernel.
  - Use the dkms install command to reinstall any previous module version.
depmod...
DKMS: uninstall completed.
 ------------------------------
Deleting module version: 0.1.84
completely from the DKMS tree.

Most likely you need to follow the instructions in the output message and try to install deprecated module manually before reboot.