Re: Clarification on --initial

On Thu, 2007-08-16 at 19:53 +0200, Philipp Taprogge wrote:
> Hi!
>
> Thus spake Al on 08/16/2007 06:58 PM:
> > Say I have two data nodes in my cluster that uses on-disk memory, and
> > I'd like to add two more data nodes to the cluster. When restarting
> > the cluster, I'll need to run ndbd --initial on all the data nodes,
> > not just the new ones, correct?
>
> I think not. If I get it right, starting a node with --initial will
> effectively wipe it clean, so in your above scenario, you'd have a brand new
> but empty four-node cluster.
> I guess that's not what you want.

It's the only (current) way to add data nodes. start a fresh cluster and restore from backup.

> But I am getting a little confused by the whole tread...
> Perhaps one of the enlightened could explain, what /is/ a scenario where you'd
> use --initial?
> It now seems there isn't one and I wonder why keep the option if it's not
> dangerously misnamed but also superfluous?
>

There is.
a) some configuration changes require --initial b) when wanting to force a resync.

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Stewart Smith, Senior Software Engineer
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