<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 23, 2017 at 5:45 AM, Tatsuo Ishii <span dir="ltr"><<a href="mailto:ishii@sraoss.co.jp" target="_blank">ishii@sraoss.co.jp</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Usama,<br>
<br>
I thought de-escalation and escalation happen sequentially, rather<br>
than concurrently, but it seems I was wrong. If they happen in<br>
sequential, you thought seems to be correct.<br></blockquote><div><br></div><div>The new leader election and escalation start as soon as the old master informs the cluster that it is going down, So escalation and de-escalation can happen in parallel and it is necessary to ensure minimum down time at the time of the master node switch.</div><div><br></div><div>I will make the necessary changes.</div><div><br></div><div>Regards</div><div>Muhammad Usama </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Best regards,<br>
--<br>
Tatsuo Ishii<br>
SRA OSS, Inc. Japan<br>
English: <a href="http://www.sraoss.co.jp/index_en.php" rel="noreferrer" target="_blank">http://www.sraoss.co.jp/index_<wbr>en.php</a><br>
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<div class="HOEnZb"><div class="h5"><br>
> Hi Ishii-San<br>
><br>
> Any thoughts on this one?<br>
><br>
> Kind regards<br>
> Muhammad Usama<br>
><br>
> On Thu, Feb 16, 2017 at 2:05 PM, Muhammad Usama <<a href="mailto:m.usama@gmail.com">m.usama@gmail.com</a>> wrote:<br>
><br>
>> Hi<br>
>><br>
>> At the time de-escalation from the master watchdog node, Pgpool-II should<br>
>> not perform the ping test to verify if the VIP is successfully brought down<br>
>> or not.<br>
>><br>
>> The reason is, if the newly elected master watchdog node acquires the VIP<br>
>> while the resigning Pgpool-II node is still performing the de-escalation<br>
>> steps or doing the ping test on VIP. The resigning Pgpool-II will<br>
>> falsely assume that it has failed to bring down the delegate IP, after<br>
>> getting the positive ping result from the new master node that has already<br>
>> acquired that VIP.<br>
>><br>
>> Comments and suggestions are welcome.<br>
>><br>
>> Kind regards<br>
>> Muhammad Usama<br>
>><br>
</div></div></blockquote></div><br></div></div>