Hi Sandro,
thanks for your reply and your council.
You suggest me to upgrade my ovirt infrastructure.
Can I upgrade the engine first and after the hosts and then can I reinstall using ovirt node 4.2.8 without remove it from engine? Thats right?
Yes, you can start with the engine and then reinstall hosts one by one using oVirt Node 4.2.8. Once finished you can change cluster compatibility level to 4.2 for consuming new features included in 4.2.
I thought I could reinstall the hosts still in version 4.1 and upgrade later but I will follow your advice.
You can reinstall 4.1 hosts but 4.1 is not compatible with CentOS >= 7.5 so you'll miss all the security fixes from the past year including meltdown and spectre fixes.
I would recommend to use 4.2.8.
Thank you for you help.
nikkognt
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