[Linux-HA] migration from 0.4.8 to 1.2.3 ?

[David Lang]

one thing to watch out for, the older version is case sensitive for the 
node names, the new one squashes them to lower case. if they are all lower 
case you won't have a problem.

David Lang

  On Thu, 18 Aug 2005, Alan Robertson wrote:

> Date: Thu, 18 Aug 2005 10:22:22 -0600
> From: Alan Robertson <alanr at unix.sh>
> Reply-To: General Linux-HA mailing list <linux-ha at lists.linux-ha.org>
> To: General Linux-HA mailing list <linux-ha at lists.linux-ha.org>
> Subject: Re: [Linux-HA] migration from 0.4.8 to 1.2.3 ?
> 
> mail_fjg_ha at gmx.info wrote:
>> hello
>> i have some question to a migration.
>> 
>> There is still running a pair with version 0.4.8.
>> 
>> It is possible to migrate one server to version 1.2.3 and then switch from 
>> the 'old' master to the 'newer' one?
>> 
>> Or ist is only possible to stop the older master and then start the newer 
>> one?
>> 
>> Can both version work together for a short time (a couple of days) in 
>> harmony, until the older one will be migrated too?
>> 
>> Thank you for informations
>> 
>> ---
>> Frank-J. Greger
>
>
> I think this should work.   We design things so that version upgrades are as 
> smooth as possible.
>
> However, I'm not sure why you wouldn't go ahead to 2.0.0.  It has quite a 
> number of bug fixes compared to 1.2.3.  (you can't enable the CRM until after 
> both sides have been upgraded).
>
> The same thing is true there as well.
>
> BUT, for either case - we have NOT tested the particular combinations 
> together.  I would recommend trying the combination you want together in a 
> test environment if that's possible.
>
> If you have nice_failback set to on in your old ha.cf file, then you should 
> set auto_failback to legacy in your new ha.cf.  If you have nice_failback set 
> to off in your old ha.cf, then you should set auto_failback on in your new 
> ha.cf
>
>
> -- 
>    Alan Robertson <alanr at unix.sh>
>
> "Openness is the foundation and preservative of friendship...  Let me claim 
> from you at all times your undisguised opinions." - William Wilberforce
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>

-- 
There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies.
  -- C.A.R. Hoare