Re: Patch: Implement failover on libpq connect level.

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От Kuntal Ghosh
Тема Re: Patch: Implement failover on libpq connect level.
Дата
Msg-id CAGz5QCJnNfJmh0boo5q=932=XvW30Q+2KwH=1er_QLcng7hfqQ@mail.gmail.com
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Ответ на Re: Patch: Implement failover on libpq connect level.  (Mithun Cy <mithun.cy@enterprisedb.com>)
Ответы Re: Patch: Implement failover on libpq connect level.
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On Thu, Nov 24, 2016 at 5:46 PM, Mithun Cy <mithun.cy@enterprisedb.com> wrote:
> I have taken this suggestion now renamed target_server_type to
> target_session_attrs with possible 2 values "read-write", "any".
> May be we could expand to "readonly" and "prefer-readonly" in next patch
> proposal. Attaching the patch for same.
I was doing some testing with the patch and I found some inconsistency
in the error message.
I've a read-only server running on port 5433 and no server on 5436 and 5438.

command: bin/psql
'postgresql://localhost:5436,localhost:5433,localhost:5438/postgres?target_session_attrs=read-write'

I get the following error message.

psql: could not make a writable connection to server "localhost:5433"
could not connect to server: Connection refused   Is the server running on host "localhost" (::1) and accepting
TCP/IPconnections on port 5438?
 
could not connect to server: Connection refused   Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IPconnections on port 5438?
 

It didn't show any error message for port 5436. But, if I modify the
connection string as following:

command: bin/psql
'postgresql://localhost:5433,localhost:5436,localhost:5438/postgres?target_session_attrs=read-write'

I get the following error message:

psql: could not make a writable connection to server "localhost:5433"
could not connect to server: Connection refused   Is the server running on host "localhost" (::1) and accepting
TCP/IPconnections on port 5436?
 
could not connect to server: Connection refused   Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IPconnections on port 5436?
 
could not connect to server: Connection refused   Is the server running on host "localhost" (::1) and accepting
TCP/IPconnections on port 5438?
 
could not connect to server: Connection refused   Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IPconnections on port 5438?
 

-- 
Thanks & Regards,
Kuntal Ghosh
EnterpriseDB: http://www.enterprisedb.com



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