PostgreSQL on Amazon RDS

On 5/7/19 9:25 AM, Rashmi V Bharadwaj wrote:

Hi,

That query will only give the PostgreSQL database server's IP address
right? That is true while we do a remote access to the non-cloud
database from another machine also.
I want to know if there is anything specific that can be used to
determine a cloud environment.

-Rashmi

-----"Nicklas Avén" <nicklas.aven@jordogskog.no
<mailto:nicklas.aven@jordogskog.no>> wrote: -----
To: Rashmi V Bharadwaj <rvbharad@in.ibm.com <mailto:rvbharad@in.ibm.com>>
From: "Nicklas Avén" <nicklas.aven@jordogskog.no
<mailto:nicklas.aven@jordogskog.no>>
Date: 07/05/2019 12:46PM
Subject: Re: PostgreSQL on Amazon RDS

Hi

You can resolv the ip-address

select inet_server_addr();

/Nicklas

On 5/7/19 8:27 AM, Rashmi V Bharadwaj wrote:

Hi,

Is there a SQL query or a database parameter setting that I can use
from an external application to determine if the PostgreSQL database
is on cloud (like on Amazon RDS or IBM cloud) or on a non-cloud
on-prem environment?

Thanks,
Rashmi

Sorry I didn't reply to list last time, and I top posted. I will be
banned :-)

Well, that is true that you will get an ip-address in both cases, but in
one case the ip-address will point to a cloud server and in the other
case to some other server.

What you define as a cloud server is up to you.

I don't fully understand what you are want to get. I mean the postgresql
installation doesn't have any definition about what is a cloud server
and what is not.

Some vendors probably have some special settings that can be detected,
but you can install postresql on any server, hosted by you, a company, a
company named Amazon or whatever.

From the ip-address you might be able to find out if it seems to be an
rds server.

But I see that it seems to only give the private address in Amazon rds.
So then it might be difficult.

So, back to your original question.

I don't think there are anything specific for a cloud installation since
a cloud server is just a server like any other server.

If there is something special it is vendor specific.

/Nicklas

On 5/6/19 23:27, Rashmi V Bharadwaj wrote:

Is there a SQL query or a database parameter setting that I can use from
an external application to determine if the PostgreSQL database is on
cloud (like on Amazon RDS or IBM cloud) or on a non-cloud on-prem
environment?

Here's my psqlrc file which has pretty solid logic for detecting between
Community PostgreSQL, RDS PostgreSQL and Aurora PostgreSQL. Note that
it just assumes "community/oss" as a default if it doesn't detect the
other two. Should be easy enough to add detection of other hosted
environments into the query with the "priority" column (as long as
there's a reliable way to detect).

https://gist.github.com/ardentperf/52bd418e44b1be26d7b63af21331cece

This psqlrc also detects read-write versus read-only (e.g. hot standby),
and the usual username/database/superuser info and builds everything
into the prompt in a way that suits me.

-Jeremy

--
http://about.me/jeremy_schneider

Jeremy Schneider - Thanks for that psqlrc file. Pretty informative. :-)

On Wed, May 8, 2019 at 11:55 AM Jeremy Schneider <schneider@ardentperf.com>
wrote: