Re: Grafana unable to connect Azure Postgresql Flexible server

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Hi Julien,
              Thanks for your response. The url - https://docs.microsoft.com/en-us/azure/postgresql/flexible-server/concepts-networking says the following :
  • Because Azure Database for PostgreSQL is a managed database service, users are not provided host or OS access to view or modify configuration files such as pg_hba.conf. The content of the files is automatically updated based on the network settings.
  • Applications that are deployed on different subnets within the same virtual network can access flexible servers directly.
So, since our AKS and Postgresql flexible servers are in the same VNet the above assertion holds. Have attached a snapshot of the Networking tab of postgresql server which says the same thing.

Regards
Prabir Sarkar

On Tue, Sep 7, 2021 at 1:51 PM Julien Rouhaud <rjuju123@xxxxxxxxx> wrote:
On Tue, Sep 7, 2021 at 4:14 PM Prabir Kr Sarkar
<prabir.kr.sarkar@xxxxxxxxx> wrote:
>
> The grafana pod fails to start with the following error:
>
> t=2021-09-07T06:40:00+0000 lvl=info msg="Connecting to DB" logger=sqlstore dbtype=postgres
> t=2021-09-07T06:40:00+0000 lvl=info msg="Starting DB migrations" logger=migrator
> service init failed: failed to check table existence: pq: no pg_hba.conf entry for host "10.240.1.45", user "grafana", database "grafana", SSL off

That seems quite self explanatory.  Your grafana is trying to connect
as "grafana" role, on "grafana" database from 10.240.1.45, and your
pg_hba.conf file doesn't allow it.  I'm not sure how to configure that
on AKS but you need to either authorize it or configure grafana to use
some other credentials that are already allowed, like this one:

> Note: - We can however, connect to the postgresql flexible server from a pod (with psql) in the same AKS.

(assuming that this psql connection is allowing other IP).  See
https://www.postgresql.org/docs/current/auth-pg-hba-conf.html for more
details about the pg_hba.conf file.


--
Thanks and Regards
Prabir Sarkar

Attachment: Screenshot from 2021-09-07 14-20-59.png
Description: PNG image


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