Hi Markus,

I've done this a bunch with Amazon's RDS service. It sounds like generally 
you are on the right track. More detail about the errors you're seeing 
would be helpful, but I'll try to recount additional things that may be 
necessary here.

First, check that your postgres port is open on your db server (usually 
this is 5432) and accessible from your application server. Sometimes I do 
this by installing psql on the application server and trying to connect to 
the db server with that. On AWS there are some network settings that need 
to be tweaked to make sure that the application and db server can talk to 
each other.

The command to connect should be something like this:
`psql -U username -h db_server`

If this works, then add a postgis template to your db instance 
(instructions for this can be found here <https://postgis.net/install/>) 
and then try manually creating your project database from this template in 
psql. This will get overwritten when you run setup_db/load_package in 
Arches, but sometimes Arches likes to see that there is already a database 
there.

If things are still not working at this point then double check your 
settings/settings_local.py file.

Arches does not require that you have postgres server installed on the 
application server, but it is usually helpful in these situations to have 
the psql client installed - which requires you to select a version you 
would like it to work with.

I hope this helps. Post back with any updates or additional info.

Cheers,
Ryan


On Wednesday, April 14, 2021 at 10:51:21 AM UTC-7 Markus S. wrote:

> Hi,
>
> Does anyone have experience installing Arches 5.1 using two servers, one 
> for the web server/app and one for the PostgreSQL database? I'm looking at 
> doing that on Azure. It does not seem as simple as just setting the 
> database server host name and port in the settings file (I tried it). 
> Furthermore, the Arches app installation process seems to require the 
> Postgre 12 dependency on the app's server, implying that the default 
> expectation is that the db and the app reside on the same server.
>
> Any tips on this would be appreciated.
>
> Markus
>

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