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I am pretty new to the Linux platform and I am trying to upgrade my VM from rhel 7.3 to 7.9. I understand that 7.3 is way older and I am wondering if I need to incrementally install all the minor versions 7.4, 7.5 ... etc before getting to 7.9?

I tried looking up such upgrades online but for the most part, I am only seeing upgrades from one minor version to the next minor version.

Also are there any known issues that may arise from this upgrade? Will appreciate any help I can get on this.

P.S: I am not trying to get to rhel 8 just yet :)

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  • Normal procedure with a VM would be to do a fresh install and copy your data over. Obviously this approach might pose problems if your install is hugely customised. Commented Jun 14, 2021 at 17:58
  • @JeremyBoden A fresh install is only needed for a major release. This is just a minor release. Commented Jun 14, 2021 at 18:04
  • so a yum upgrade would work here? Is it possible that making this big yum might cause some packages to not work? Commented Jun 14, 2021 at 18:11
  • If you're worried you could contact RedHat. Presumably you have a support contract because you're running RHEL Commented Jun 14, 2021 at 18:37

2 Answers 2

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You can run yum update directly. You might want to update the kernel first, yum update kernel kernel-*.

Whatever you do, make sure you have enough disk space free, especially in /boot.

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You can perform a minor upgrade through:

sudo subscription-manager register --auto-attach sudo yum --releasever=7.9 update
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