Re: Pg_upgradecluster failed

Re: Matthieu Lejeune 2017-01-18 <45d1244b-145d-ffce-d140-0f693ae4948f(at)exxoss(dot)com>
> But with my command I got this error :
>
> oot(at)bas40:/etc/postgresql/9.3/main# pg_upgradecluster -v 9.5 -m upgrade 9.3
> main
> Disabling connections to the old cluster during upgrade...
> Restarting old cluster with restricted connections...
> psql: FATAL: database "template1" is not currently accepting connections

Hi,

pg_upgradecluster relies on the template1 database being accessible
for maintenance operations during the upgrade. This is currently not
configurable, but we could certainly add an option to allow passing a
different database (e.g. "postgres") for the upgrade.

> postgres=# select * from pg_database
> ;
> datname | datdba | encoding | datcollate | datctype | datistemplate |
> datallowconn | datconnlimit | datlastsysoid | datfrozenxid | datminmxid |
> dattablespace | datacl
> ------------+--------+----------+------------+----------+---------------+--------------+--------------+---------------+--------------+------------+---------------+-------------------------------------
> template0 | 10 | 0 | C | C | t | t
> | -1 | 12030 | 200000724 | 37376355 | 1663 |
> {=c/postgres,postgres=CTc/postgres}

Uhm, "template0" must never be connected to, you shouldn't have set
datallowconn = 't. for it.

> If I try to change from false to true I got this error :

> template0 must not allow connections, i.e. its pg_database.datallowconn must

(It seems this was even wrong before you changed it now)

Mit freundlichen Grüßen,
Christoph Berg
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