[pgpool-hackers: 2055] Re: Pgpool-II should not perform ping test after bringing down the VIP

[Tatsuo Ishii]

Usama,

I thought de-escalation and escalation happen sequentially, rather
than concurrently, but it seems I was wrong. If they happen in
sequential, you thought seems to be correct.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp

> Hi Ishii-San
> 
> Any thoughts on this one?
> 
> Kind regards
> Muhammad Usama
> 
> On Thu, Feb 16, 2017 at 2:05 PM, Muhammad Usama <m.usama at gmail.com> wrote:
> 
>> Hi
>>
>> At the time de-escalation from the master watchdog node, Pgpool-II should
>> not perform the ping test to verify if the VIP is successfully brought down
>> or not.
>>
>> The reason is, if the newly elected master watchdog node acquires the VIP
>> while the resigning Pgpool-II node is still performing the de-escalation
>> steps or doing the ping test on VIP. The resigning Pgpool-II will
>> falsely assume that it has failed to bring down the delegate IP, after
>> getting the positive ping result from the new master node that has already
>> acquired that VIP.
>>
>> Comments and suggestions are welcome.
>>
>> Kind regards
>> Muhammad Usama
>>