[Freeipa-users] upgrade 3.0 -> 4.1

[Dmitri Pal]

On 04/03/2015 09:46 AM, Brian Topping wrote:
>> On Apr 3, 2015, at 6:48 AM, Tamas Papp <tompos at martos.bme.hu> wrote:
>>
>> hi All,
>>
>> I have CentOS 6.6 server and want to upgrade to 7.1.
>>
>> What is the upgrade path, can I do it directly or first I need to make it to 3.3?
>> Also is there any known issue I should expect with workarounds?
> I just did this yesterday, so here's my experience. If you have a simple single-server installation with no custom LDAP DIT modifications, you should find "yum upgrade" does the right thing.
>
> If you do have DIT mods, you should ask yourself why they are there and whether the data will still be accessible after the ACLs are changed. In my case, I had Postfix using a LDAP hash and mail delivery stopped working (although the domain data was still there just fine).
>
> Note that the ACLs will propagate from the 4.1 server to your 3.0 if they are replicated. To be safe, back up all replicas (snapshot or whatnot) before the first upgrade and if you decide to restore any of them, be sure everything is shut down and restore all of them to avoid 4.x schema contaminating 3.0 as they come up.


The general recommendation for 3.3 -> 4.1 migration is to start 
introducing 4.1 replicas into your 3.3 environment and then turn your 
3.3 replicas off. Do not forget to install the CA component with one of 
your 4.1 replicas before removing all the 3.3 instanced with CAs. With 
this procedure you would also need to move the CRL generation and cert 
tracking.

See details in migration section 
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html-single/Linux_Domain_Identity_Authentication_and_Policy_Guide/index.html#migrating-ipa-proc
>
> Brian
>
>> Thanks,
>> tamas
>>
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>
>


-- 
Thank you,
Dmitri Pal

Sr. Engineering Manager IdM portfolio
Red Hat, Inc.

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