On Fri, 7 Jan 2022 at 03:29, Euler Taveira <
euler@eulerto.com> wrote:
On Tue, Jan 4, 2022, at 3:11 PM, PG Doc comments form wrote:
We could include a sentence explaining that a port probe is not a sufficient
condition to successfully connect to a Postgres server because the state
machine has more than 2 states. PQping [1] already states "reports the status
of the server" and describe each state it provides. Feel free to suggest an
improvement to documentation.
A diagram of the state machine would be very useful.
There is no known issues with pg_isready and that report isn't clear. He says
"database and/or user wasn't available". What's the exact error message? If
there is a reproducible test case, share it here.
PostgreSQL docker image can run initialization scripts at container start to
create database, users and maybe load some data. So when pg_isready
reports success, the DB can still be in an inconsistent state for an app to start
using it.