[Pgpool-hackers] Enhancing show pool_nodes

Tatsuo Ishii ishii at sraoss.co.jp
Fri Oct 7 06:30:10 UTC 2011


> On Thu, 2011-10-06 at 10:10 +0900, Tatsuo Ishii wrote:
>> Currently show pool_nodes SQL command shows:
>> 
>>   id  |  hostname   | port | status | lb_weight
>> 
>> I would like to add info whether the node is primary, master or
>> standby because there's no way to know from exisiting pgpool-II UI.
>> The new column name would be "class" (plese say no, if you have better
>> idea about naming). The value will as follows:
>> 
>> Raw mode:
>> "master" or ""
>> 
>> Native replication mode:
>> "master" or "slave"
>> 
>> Streaming replication mode:
>> "primary" or "standby"
>> 
>> Master slave mode with slony:
>> "master" or "slave"
>> 
>> Comments or opinions?
> 
> I guess it would be better to have the same vocabulary. So I would vote
> "master"/"slave" for each replication mode, and "master" for raw mode.

Hum. I'd prefer to use "primary" and "standby" to keep consistency
with PostgreSQL's terminology. We might use even another word for 9.1,
for example "synchronous standby". So just only using "master/slave"
would be more confusing and less informative to user, I think.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp


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