Update postgres.md (#7119)

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siroccal 2020-04-01 13:44:51 +02:00 committed by GitHub
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changelog.d/7119.doc Normal file
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Update postgres docs with login troubleshooting information.

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@ -61,7 +61,33 @@ Note that the PostgreSQL database *must* have the correct encoding set
You may need to enable password authentication so `synapse_user` can
connect to the database. See
<https://www.postgresql.org/docs/11/auth-pg-hba-conf.html>.
<https://www.postgresql.org/docs/current/auth-pg-hba-conf.html>.
If you get an error along the lines of `FATAL: Ident authentication failed for
user "synapse_user"`, you may need to use an authentication method other than
`ident`:
* If the `synapse_user` user has a password, add the password to the `database:`
section of `homeserver.yaml`. Then add the following to `pg_hba.conf`:
```
host synapse synapse_user ::1/128 md5 # or `scram-sha-256` instead of `md5` if you use that
```
* If the `synapse_user` user does not have a password, then a password doesn't
have to be added to `homeserver.yaml`. But the following does need to be added
to `pg_hba.conf`:
```
host synapse synapse_user ::1/128 trust
```
Note that line order matters in `pg_hba.conf`, so make sure that if you do add a
new line, it is inserted before:
```
host all all ::1/128 ident
```
### Fixing incorrect `COLLATE` or `CTYPE`