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Document the service users refresh interval

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The interval between refreshes of the database users list wasn't
documented.
This commit is contained in:
Markus Mäkelä
2017-04-26 09:47:59 +03:00
parent f1efe72f66
commit 5bf79637c6
1 changed files with 8 additions and 14 deletions
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22
Documentation/Getting-Started/Configuration-Guide.md
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@ -642,26 +642,18 @@ The account used must be able to select from the mysql.user table, the following
is an example showing how to create this user.
```
MariaDB [mysql]> CREATE USER 'maxscale'@'maxscalehost' IDENTIFIED BY 'Mhu87p2D';
Query OK, 0 rows affected (0.01 sec)
MariaDB [mysql]> GRANT SELECT ON mysql.user TO 'maxscale'@'maxscalehost';
Query OK, 0 rows affected (0.00 sec)
CREATE USER 'maxscale'@'maxscalehost' IDENTIFIED BY 'maxscale-password';
```
Additionally, `SELECT` privileges on the `mysql.db` and `mysql.tables_priv`
Additionally, `SELECT` privileges on the `mysql.user`, `mysql.db` and `mysql.tables_priv`
tables and `SHOW DATABASES` privileges are required in order to load databases
name and grants suitable for database name authorization.
```
MariaDB [(none)]> GRANT SELECT ON mysql.db TO 'maxscale'@'maxscalehost';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> GRANT SELECT ON mysql.tables_priv TO 'maxscale'@'maxscalehost';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> GRANT SHOW DATABASES ON *.* TO 'maxscale'@'maxscalehost';
Query OK, 0 rows affected (0.00 sec)
GRANT SELECT ON mysql.user TO 'maxscale'@'maxscalehost';
GRANT SELECT ON mysql.db TO 'maxscale'@'maxscalehost';
GRANT SELECT ON mysql.tables_priv TO 'maxscale'@'maxscalehost';
GRANT SHOW DATABASES ON *.* TO 'maxscale'@'maxscalehost';
```
MariaDB MaxScale will execute the following query to retrieve the users. If you
@ -689,6 +681,8 @@ In versions of MySQL 5.7.6 and later, the `Password` column was replaced by
`authentication_string`. Change `user.password` above with
`user.authentication_string`.
**Note**: If authentication fails, MaxScale will try to refresh the list of
database users used by the service up to 4 times every 30 seconds.
#### `passwd`