Re: "FATAL: the database system is starting up" and hot_standby = on

From: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
To: Ilnur Khanov <khanov(dot)i(at)gmail(dot)com>, pgsql-admin(at)lists(dot)postgresql(dot)org
Subject: Re: "FATAL: the database system is starting up" and hot_standby = on
Date: 2017-12-07 17:37:32
Message-ID: 1512668252.2915.17.camel@cybertec.at
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Ilnur Khanov wrote:
> For me, when I saw "FATAL: the database system is starting up", nothing else hasn't been working: pgAdmin, psql, business apps.

"FATAL" just means that a client connection is terminated.
In this case, because the database is not up.

> Logs has been showing cycles: client connect - worker starts - "the-FATAL-error" -
> worker shutting down with exit code (1). No any informative errors.
>
> I think, database engine is in some sort of recovery mode after crush, but I was
> waiting long enough - no CPU or HDD activity. If it's some sort of warning and waiting for me to check consistency and manually reset this mode flag, but then how to do this?!
>
> More important: now problem is not solved, "hot_standby = on" is just workaround letting query databases.
> But PostgreSQL is still in some strange mode and I don't understand how serious is it and how resolve it correctly.

You cannot modify the database, right?
And "SELECT pg_is_in_recovery();" returns TRUE, right?

Could you show us what is written to the log after a new startup?

Yours,
Laurenz Albe

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