In-Place upgrade , good or bad ?
Is really In-place upgrade (RHEL 6 to RHEL 7) good option for SAP Hana hosts RHEL 6 servers ? Since, RHEL 6 support coming to end in near future, what is world wide industries strategy for RHEL 6 ?
Responses
Guru
9770 points
Hi Sudharsan,
There is no "world wide industries strategy" - everything depends on the individual and specific needs. But one thing's for sure :
Replacing RHEL 6 with RHEL 7 brings along a lot of advantages - not to speak of the many improvements and enhancements. :)
Regards,
Christian
Yes Christian is right, depends on individual organization requirements & standards. In place-upgrade from RHEL6 to 7 is supported, please refer this article for detailed approach https://access.redhat.com/solutions/637583
Also, look at the customers' comment at the end. This has to be carefully drafted, you would need to take care of backups, roll back procedures if fails etc., You may also look at the "Package Groups" which are supported for upgrade. So, you may have to trim down your system to the basic one and try upgrade. All the best!
Guru
9770 points
Hi Sudharsan,
In addition to Sadashiva's useful hints - if even possible perform a fresh RHEL 7 installation ... this is what I recommend at least. :)
Regards,
Christian
Guru
10153 points
I'd personally never do an in-place upgrade (i.e. major release such as from 6.x to 7.current) unless it's on a server I don't care about and can reload on a whim. I have found/seen the instructions on it, one victim followed the directions I discovered from Red Hat and they regretted it later, we had advised against it.
That being said, if you wish to endure contact support and dealing with unexpected consequences, have that time built in the time necessary to suffer a potential outage. Just be ready. Perhaps P-to-V a system if possible to take it's place if things go south.
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