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<p class=MsoNormal>We have just migrated to Postgres for a small deployable set
of applications. The deployed system can be anywhere from 2 to 10+ nodes.<o:p></o:p></p>
<p class=MsoNormal>Our first cut at implementing replication is on a 2 node
system (keeping it simple) and this works fine.<o:p></o:p></p>
<p class=MsoNormal>We are two implementing failure strategies using
Slonik scripts:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]>Soft change over master when all nodes are
present. This works fine by using “move set”<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]>Hard change over master when the existing master node
is not present. Trying to use “failover” but no go.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> In the soft case the commands used are:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:36.0pt'>lock set (id = 1, origin = 1);<o:p></o:p></p>
<p class=MsoNormal style='margin-left:36.0pt'>wait for event (origin = 1,
confirmed = 2);<o:p></o:p></p>
<p class=MsoNormal style='margin-left:36.0pt'>move set (id = 1, old origin = 1,
new origin = 2);<o:p></o:p></p>
<p class=MsoNormal style='margin-left:36.0pt'>wait for event (origin = 1,
confirmed = 2);<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>In the hard case the command is simply:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-indent:36.0pt'>failover (id=1, backup node = 2)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The failover command does not seem to have any effect at
all.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have not been able to find the slon error log (Windows
platform) to determine why.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any suggestions??<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thx Ted<o:p></o:p></p>
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