Tue Nov 20 12:11:22 PST 2007
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On Tuesday 20 November 2007 12:07:21 Jeff Frost wrote: > On Tue, 20 Nov 2007, Christopher Browne wrote: > > No, there is no notion of modifying the node ID; the ID is very deeply > > intertwined into replication state across all the nodes, with the result > > that trying to alter the ID would be likely to lead to potential for > > *enormous* confusion within the replication system. > > > > There is no reason to have a "node 1" around; many of the tests assume > > its absence, and in most of our production clusters, we use node numbers > > that are *somewhat* meaningful. > > > > For instance, several clusters consist of nodes: > > 8141 > > 8142 > > 8143 > > 8194 > > > > Where: > > > > - "81" indicates that it's a PostgreSQL 8.1 instance (we may soon have > > nodes starting with "83") > > - 4 versus 9 indicates which data centre the node is at > > - below all of that, we have a more-or-less serial value, 1,2,3,4 > > > > It's not quite wonderful, but it's mnemonic enough to be useful... > > The only reason I consider changing it, is that the event node defaults to > 1. Is it possible to define what the default event node without changing > the code and recompiling? well if you use altperl, you can just define the default node in the conf file... > > EVENT NODE = ival > (Optional) The ID of the current origin of the set. Default value is > 1. > > It just means we have to remember to specify it in the slonik scripts after > the upgrade. -- Darcy Buskermolen Command Prompt, Inc. +1.503.667.4564 X 102 http://www.commandprompt.com/ PostgreSQL solutions since 1997
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