Since XenServer 7.2 is now available, we'll see how to upgrade.
Note: XenServer 7.1 is still in LTS. No emergency to upgrade on 7.2. Though, since it's a "small" revision, the risk to upgrade is low.
Xen Orchestra is 100% compatible with XenServer 7.2.
Download the ISO
You can find it here: http://downloadns.citrix.com.edgesuite.net/12636/XenServer-7.2.0-install-cd.iso
Install from USB
You can also burn a CD, but USB is in general faster and easier. On a Linux system, it's trivial:
dd if=XenServer-7.2.0-install-cd.iso of=/dev/sdX bs=8M status=progress oflag=direct
On Windows, use a dedicated program that can write ISO to USB drives.
Direct upgrade path
You can upgrade your previous XenServer version directly to 7.2 since XenServer 6.2, 6.5, 7.0 and 7.1.
It's exactly the same as all previous XenServer 7.x version (see our previous blog post: upgrade to XenServer 7.1):
- / (root) 18GB
- /boot/efi 512M
- /var/log 4GB
- Swap 1GB
Are you upgrading from an older version than XenServer 7.0? Or do you have the old partition scheme? Please follow instructions in our previous blog post to switch to the new one.
Rolling pool upgrade
If you have a pool with multiple hosts, there is some basic rules to follow:
Always upgrade the pool master first:
- Migrate VMs from your pool master to slaves
- Upgrade the pool master
- Migrate VMs from one slave to the pool master
- Migrate this slave
You can always live migrate VMs from an older XenServer to a newer. The opposite IS NOT POSSIBLE.
Also, always check to empty your VM CD drives and disable HA during the operation.