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Add troubleshooting documentation on PostgreSQL/MySQL authentication errors.

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Dan Helfman 2023-03-25 17:08:17 -07:00
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docs/how-to/backup-your-databases.md
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@ -380,6 +380,23 @@ dumps with any database system.
## Troubleshooting
### PostgreSQL/MySQL authentication errors
With PostgreSQL and MySQL/MariaDB, if you're getting authentication errors
when borgmatic tries to connect to your database, a natural reaction is to
increase your borgmatic verbosity with `--verbosity 2` and go looking in the
logs. You'll notice however that your database password does not show up in
the logs. This is likely not the cause of the authentication problem unless
you mistyped your password, however; borgmatic passes your password to the
database via an environment variable that does not appear in the logs.
The cause of an authentication error is often on the database side—in the
configuration of which users are allowed to connect and how they are
authenticated. For instance, with PostgreSQL, check your
[pg_hba.conf](https://www.postgresql.org/docs/current/auth-pg-hba-conf.html)
file for that configuration.
### MySQL table lock errors
If you encounter table lock errors during a database dump with MySQL/MariaDB,