Re: Question: Multiple pg clusters on one server can be reached with the standard port.

On 6/20/23 09:54, Peter J. Holzer wrote:
> On 2023-06-19 16:09:34 -0500, Ron wrote:
>> On 6/19/23 12:15, Peter J. Holzer wrote:
>> On 2023-06-19 07:49:49 -0500, Ron wrote:
>> On 6/19/23 05:33, Peter J. Holzer wrote:
>> So (again, as Francisco already wrote) the best way is probably to write
>> a simple proxy which uses the database (not DNS) name for routing. I
>> seem to remember that nginx has a plugin architecture for protocols so
>> it might make sense to write that as an nginx plugin instead of a
>> standalone server, but that's really a judgement call the programmer has
>> to make. Another possibility would of course be to extend pgbouncer to
>> do what the OP needs.
>>
>> How would this work with JDBC clients?
>>
>> Same as with any other client, I guess. Any reason why it should be
>> different?
>>
>>
>> That goes to my ultimate point: why would this work, when the point of a
>> database client is to connect to a database instance on a specific port like
>> 5432, not connect to a web server.
> Consider this scenario:
>
> You have several databases scattered across several hosts and ports:
>
> db1 host1.example.com:5432
> db2 host1.example.com:5433
> db3 host2.example.com:5432
> db4 host3.example.com:5432
>
> Then you have your proxy/gateway/bouncer (whatever you want to call it)
> listening on proxy.example.com:5432.

Proxies/gateways are great. My question is about why you mentioned nginx.

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Born in Arizona, moved to Babylonia.