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OS upgrade

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michaelvv

MIS
Jan 17, 2003
70
US
We are planning an OS upgrade from 5.3 to 7.1. The server in question is a hub for files coming in and going out via sftp, using ssh keys. Do I need to take any precautions regarding authorized_keys and known_hosts?

Thanks,
Michael
 
I recommend you work on a slower but steady process, taking a leap from 5.3 to 7.1, might come as a big surprise.

Go with 6.1 1st then after a week or atleast after couple of days jump from 6.1 to 7.1

Those files should not be affected.



SARFARAZ AHMED SYED,
Sr. Systems Engineer
 
Thanks Sarfaraz, but that decision is out of my hands, unless I can come up with a good reason not tog to 7.1 directly!
Michael
 
You might consider downloading only the openssh Version matching the one contained in the AIX 7.1 package and install it on a Testsystem so you can figure out whether it is behaving differently or not before you upgrade the whole OS ...


Regards,
Thomas
 
see following link :
I always use the copy variant because the first was not OK

An alternative way to work around this problem (after the fact) would be to restore the original ssh_host_key* files from a backup. For example, I copied the original ssh_host_key* files to my home directory before starting the AIX migration.



and with smitty nimadm_migrate no problem from AIX 5 to AIX 6.1 or 7.1.

see here :
 
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