[389-users] Re: Upgrade question

[Fernando Fuentes]

Thanks William!

Fernando Fuentes
Supervisor & Senior Systems Administrator
Email: ffuentes(a)aasteel.com
  
American Alloy Steel, Inc.
Houston, Texas
Website: http://www.aasteel.com
  
Phone: [phone]
Fax:   [phone]

On 10/3/19 5:19 PM, William Brown wrote:
> > On 4 Oct 2019, at 03:53, Fernando Fuentes <ffuentes(a)aasteel.com&gt; wrote:
> >
> > I run 389ds 1.3.8 and there is an update to 1.3.9. Is it safe to update?
>  Yes! We have a great QE team and they test our updates to make sure they are safe.
>
>  If you have concerns, before you start the upgrade take a VM/LVM snapshot, and also be
> sure to run "db2bak".
>
>  We support replication between major releases normally (IE 1.2.x to 1.3.x OR  1.3.x to
> 1.4.x). This can be run for a while, but generally we don't advise more than a few
> months, as it's always better to keep your topology on the same versions.
>
> > Also if I have a Replication server with a Master and read only slave, what is the
> procedure or best practice to update?
> > Thanks!
>  It's really up to you. Having a plan, including backout strategy is always wise.
>
>  If this was my environment I would probably make my plan something like:
>
>  * backup (db2bak) read only replica (avoid use of the word slave these days :) )
>  * snapshot the read only replica (vm/lvm) if possible
>  * perform the upgrade on the replica
>  * run a sanity/acceptance test - do client applications still work, can you search for
> users, etc.
>  * wait a few days
>
>  Now do the same on the read-write server.
>
>  The backout plan is:
>
>  * If the acceptance test fails, revert the snapshot. You may need to perform a
> nsds5startreplicarefresh to reset the read-only replication information as this may cause
> a replication desync.
>  * If the snapshot roll back fails in some way, destroy the host and rebuild a new ro/rw
> replica with the content from db2bak/dse.ldif etc.
>
>
>  Hope that helps,
>
>
> > Regards,
> >
> > -- 
> >
> > Fernando Fuentes
> > Supervisor & Senior Systems Administrator
> > Email: ffuentes(a)aasteel.com
> > American Alloy Steel, Inc.
> > Houston, Texas
> > Website: http://www.aasteel.com
> > Phone: [phone]
> > Fax:   [phone]
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>  —
>  Sincerely,
>
>  William Brown
>
>  Senior Software Engineer, 389 Directory Server
>  SUSE Labs
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