[CentOS] Is it a way to upgrade CentOS 7 to 8?

Sat Oct 12 19:03:44 UTC 2019
Pierre Malard <plm at teledetection.fr>

Ok, thanks. it’s now very clear…
I must stay in CentOS 7 as long as possible…

Thanks and best regards

> Le 12 oct. 2019 à 20:49, Ljubomir Ljubojevic <centos at plnet.rs> a écrit :
> 
> On 10/12/19 8:19 PM, Pierre Malard wrote:
>> Hi,
>> 
>> I’m looking for a method to upgrade my centos 7 servers to 8 and I don’t find anything to do that!
>> 
>> I’m a very newbie with CentOS? My choices where gone to Debian or Ubuntu and it was very simple. Just some files must be changed (/etc/apt/source.list). My search suggest a RELH subscription. Is it the only way?
>> 
> 
> Hi Pierre.
> 
> RHEL/CentOS are different then Ubuntu, Debian or Fedora. RHEL/CentOS 6.x
> was based on Fedora 12 packages, RHEL/CentOS 7.x on Fedora 19 and
> RHEL/CentOS 8.0 on Fedora 28 packages. As you can see, Upgrading from
> CentOS 7 to 8 is like directly updating from Fedora 19 to Fedora 28, gap
> of whole 9 versions, and Ubuntu from 14.04 to 19.04 (skipping 14.10,
> 15.04, 15.10, 16.04, 16.10, 17.04, 17.10, 18.04 and 18.10). This happens
> because CentOS becomes EOL after 10 years and it's replacement 5 full
> years after initial release. In whole that time, main packages like
> glibc do not change version (except bugfixes).
> 
> So, differences between packages versions are VERY large, and simple
> "upgrade" would most likely mess things up.
> 
> Red Hat did release a RHEL tool for upgrade, but there is no interest in
> community to work to convert it for CentOS, so trying to upgrade CentOS
> 7 to 8 is risky at least.
> 
> I do not even think about upgrading my servers from 7 to 8, only clean
> install is option for me (with backup before it of course).
> 
> On another note, if you do not have a pressing need to upgrade CentOS to
> 8, I would argue you can stay on 7 for next 3-5 years, or maybe upgrade
> one at the time.
> 
> Many packages like php can be upgraded on CentOS 7. If you tell us why
> you NEED to upgrade your servers to 8, maybe we can dirrect you to
> solution like Software collection or IUS repository.
> 
> 
> 
>> Best regards
>> 
>> --
>> Pierre Malard
>> 
>>   «La France n'est pas schismatique, elle est révolutionnaire»
>>                                                                      Jean Jaures - 1905
>>                      (`.-,')
>>                    .-'     ;
>>                _.-'   , `,-
>>          _ _.-'     .'  /._
>>        .' `  _.-.  /  ,'._;)
>>       (       .  )-| (
>>        )`,_ ,'_,'  \_;)
>> ('_  _,'.'  (___,))        πr
>> `-:;.-'
>> 
>> perl -e '$_=q#: 3|\ 5_,3-3,2_: 3/,`.'"'"'`'"'"' 5-.  ;-;;,_:  |,A-  ) )-,_. ,\ (  `'"'"'-'"'"': '"'"'-3'"'"'2(_/--'"'"'  `-'"'"'\_): 24πr::#;y#:#\n#;s#(\D)(\d+)#$1x$2#ge;print'
>> - --> Ce message n’engage que son auteur <--
>> 
>> 
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> 
> 
> --
> Ljubomir Ljubojevic
> (Love is in the Air)
> PL Computers
> Serbia, Europe
> 
> StarOS, Mikrotik and CentOS/RHEL/Linux consultant

--
Pierre Malard

  « Si l'on veut croire en l'humanité,
     il faut voir et comprendre l'inhumanité »
   |\      _,,,---,,_
   /,`.-'`'    -.  ;-;;,_
  |,4-  ) )-,_. ,\ (  `'-'
 '---''(_/--'  `-'\_)   πr

perl -e '$_=q#: 3|\ 5_,3-3,2_: 3/,`.'"'"'`'"'"' 5-.  ;-;;,_:  |,A-  ) )-,_. ,\ (  `'"'"'-'"'"': '"'"'-3'"'"'2(_/--'"'"'  `-'"'"'\_): 24πr::#;y#:#\n#;s#(\D)(\d+)#$1x$2#ge;print'
- --> Ce message n’engage que son auteur <--

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