CentOS - May 2016 - Regarding upgrade from CentOS .5.5 to CentOS 7

Hi,

I wanted to upgrade from centOS 5.5 to CentOS 7 without losing the data.

Is there any upgrade path available?

or what is the proper way to do it without affecting the existing config?

Thnaks for the help

-- 
Thanks & Regards,
Venkateswara Rao Dokku.

On 05/05/16 01:13 AM, Venkateswara Rao Dokku wrote:
> Hi,
> 
> I wanted to upgrade from centOS 5.5 to CentOS 7 without losing the data.
> 
> Is there any upgrade path available?
> 
> or what is the proper way to do it without affecting the existing config?
> 
> Thnaks for the help
So much changed from 5 to 7 that a re-install is almost certainly the
way to go. How exactly you port your config depends entirely on what
programs you are talking about.

The best idea is to create a virtual machine (or install centos 7 on
spare hardware), figure out how to configure the applications and the
process to restore the data from backups. Once you know what to do (and
have documented it), reinstall.

-- 
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without
access to education?

On 05/05/16 17:13, Venkateswara Rao Dokku wrote:
> Hi,
>
> I wanted to upgrade from centOS 5.5 to CentOS 7 without losing the data.
>
> Is there any upgrade path available?
>
> or what is the proper way to do it without affecting the existing config?
>
> Thnaks for the help
Install another hard drive or SSD, partition it / install CentOS 7, 
telling Anaconda to leave your existing drive alone.
Once done, and rebooted, you can mount the old drive and copy what you 
need over using cp or rsync.
Enjoy

On 05/05/2016 12:13 AM, Venkateswara Rao Dokku wrote:
> Hi,
> 
> I wanted to upgrade from centOS 5.5 to CentOS 7 without losing the data.
> 
> Is there any upgrade path available?
> 
> or what is the proper way to do it without affecting the existing config?
> 
> Thnaks for the help
> 
Others have touched on this, but you do need to consider how many
versions the programs have jumped from 5.5 to 7.

Configurations for many things are going to need to be completely redone.

For example:  Apache moves from version 2.2.3 to version 2.4.6 .. so you
will need to google and read how to upgrade from apache 22 to apache 2.4

samba (if you use it) moves from version 3.0.33 to version 4.2.3, major
config changes needed.

mysql from 5.0.77 to mariadb 5.5.44 - data is required to be upgraded
and new config.

Basically, if this is a server, every service you run is going to make
major version jumps and most of them will require new configurations.
Some of them will require some kind of data conversion and
configuuration changes.

So, this is a complete process and not an upgrade.


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