Jump to content
Slate Blackcurrant Watermelon Strawberry Orange Banana Apple Emerald Chocolate Marble
Slate Blackcurrant Watermelon Strawberry Orange Banana Apple Emerald Chocolate Marble

OVZ to KVM migration with full CentOS 6 to CentOS 7 in place upgrade

Recommended Posts

wherever i visited it was made quite clear upgrading CentOS 6 to CentOS 7 is not a realistically viable option
and OVZ6 or otherwise OpenVZ aka Virtuozzo containers lack their kernel so migrating was between hard to not possible.
Well, we are happy to disagree since we managed to do the Virtualization equivalent of Magellan Circumnavigation after a week of hard work: we started with OVZ container running CentOS 6.10 and cPanel / WHM 11.86 with an upgrade blocker due to COS6 being EOL since November 2020. Managed by trial and error to migrate this container to a KVM clone running same CentOS 6.10 and all files cloned 1-1 with rsync. Then we run the magnificent yet underrrated Red Hat upgrade tool in the KVM virtual machine to upgrade to CentOS 7.0.1406 and had to recreate the missing grub2 entries since grub is no more on COS7. From that point onwards we managed to properly yum update to 7.9 and finally to fix cPanel RPM issues and run a full WHM upgrade to 11.94.
In short : OVZ COS6 WHM 11.86 -> KVM COS6 WHM 11.86 -> KVM COS7 WHM 1186 -> KVM COS7 WHM 11.94 and are are running now at latest version with functionality surprisingly high if not almost full identical
  • Like 1

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.