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We have two server running on RHEL 5.5. Now we have to upgrade it to 5.6

What are the steps to upgrade it and also the prerequisites

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2 Answers 2

Some sources say to:

Aquire the 5.6 repository information from the RedHat website, then do

# yum update

Although the RHEL documentation, albeit not very clear, says to use the CD/installer and select the "upgrade" option. See Common Tasks (chapter 24).

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2  
I'm pretty sure (though not absolutely certain) that the RH docs you point to are only for major releases (4 to 5, 5 to 6), not for minor release (5.5 to 5.6). But can't really find anything useful either. –  Mat Dec 9 '12 at 18:22
    
More than likely, although there really isn't a lot of information on the subject around. I think the better option would have to be the first, but some sources i've read also say that RHEL doesn't have yum installed by default and it would require CentOS repos etc. –  LloydOliver Dec 9 '12 at 19:10
    
Yum's standard in RHEL5 and above (access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/…) AFAIK. –  Mat Dec 9 '12 at 19:14
    
Well then I guess the first part of the answer was correct :p –  LloydOliver Dec 9 '12 at 19:19
    
I tried to find the Redhat 5.6 repository but couldn't find it. And there is no information for Upgrading to minor releases. –  OmiPenguin Dec 10 '12 at 7:32

Have a look at CentOS 5.6 Release-Notes - Known Issues. The same should be true for RHEL 5.6.

Since you are upgrading from 5.5 (and NOT an earlier version) to 5.6 yum update after

  • Applying the most recent 5.5 patches
  • Changing of the 5.5 repositories to the 5.6 repositories

Should be enough. The described iSCSI-client-bug might apply to you.

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