maria-discuss team mailing list archive

[Nicolas Bigler <nicolas.bigler@xxxxxxx>]

Yes the user has that permission. So this does not seem to be the issue
in this case.

On 09.05.19 18:36, Jeff Dyke wrote:
> Does that user from MaxScale have PROCESS permissions?  That's normally
> the only reason i've run into that error, but I'm not a MaxScale user,
> so hopefully it's somewhat helpful.
> 
> On Thu, May 9, 2019 at 11:47 AM Nicolas Bigler <nicolas.bigler@xxxxxxx
> <mailto:nicolas.bigler@xxxxxxx>> wrote:
> 
>     Hey community
> 
>     I'm currently struggling with maxscale when trying to connect to the
>     information_schema database.
> 
>     I'm able to connect to this special database when connecting to the
>     database server directly:
> 
> 
>     mysql -h <my_db_server> information_schema
>     Reading table information for completion of table and column names
>     You can turn off this feature to get a quicker startup with -A
> 
>     Welcome to the MariaDB monitor.  Commands end with ; or \g.
>     Your MariaDB connection id is 101189
>     Server version: 10.2.23-MariaDB-1:10.2.23+maria~bionic-log
>     mariadb.org <http://mariadb.org>
>     binary distribution
> 
>     Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
> 
>     Type 'help;' or '\h' for help. Type '\c' to clear the current input
>     statement.
> 
>     MariaDB [information_schema]>
> 
> 
> 
>     However I can't connect to the database when going through maxscale:
> 
>     mysql -h 127.0.0.1 information_schema
>     ERROR 1045 (28000): Access denied for user '<my_user>'@'127.0.0.1'
>     (using password: YES) to database 'information_schema'
> 
> 
>     What does work is to connect to the database first (via maxscale)
>     without specifying a database and then change to the information_schema
>     database:
> 
>     mysql -h 127.0.0.1
>     Welcome to the MariaDB monitor.  Commands end with ; or \g.
>     Your MariaDB connection id is 25321
>     Server version: 10.2.23-MariaDB-1:10.2.23+maria~bionic-log
>     mariadb.org <http://mariadb.org>
>     binary distribution
> 
>     Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
> 
>     Type 'help;' or '\h' for help. Type '\c' to clear the current input
>     statement.
> 
>     MariaDB [(none)]> use information_schema
>     Reading table information for completion of table and column names
>     You can turn off this feature to get a quicker startup with -A
> 
>     Database changed
> 
> 
>     I don't quite understand why it doesn't work directly.
>     I have a PHP application (magento2) that reads stuff from this database.
> 
> 
>     The following PHP script shows the same issue:
> 
>     <?php
>     # Fill our vars and run on cli
>     # $ php -f db-connect-test.php
>     $dbname = 'information_schema';
>     $dbuser = '<my_db_user>';
>     $dbpass = '<my_super_secret_pass';
>     $dbhost = '127.0.0.1';
> 
>     # pdo_testdb_connect.php - function for connecting to the "test"
>     database
> 
>     $dbh = new PDO('mysql:host=' . $dbhost . ';dbname=' . $dbname, $dbuser,
>     $dbpass);
> 
>     echo $dbh->exec ("SHOW TABLES FROM $dbname");
> 
>     ?>
> 
>     $ php test.php
>     PHP Fatal error:  Uncaught PDOException: SQLSTATE[HY000] [1045] Access
>     denied for user '<my_db_user>'@'127.0.0.1' (using password: YES) to
>     database 'information_schema' in /tmp/test.php:12
>     Stack trace:
>     #0 /tmp/test.php(12): PDO->__construct('mysql:host=127....',
>     '<my_db_user>', '<my_super_secret_pass>...')
>     #1 {main}
>       thrown in /tmp/test.php on line 12
> 
>     Is there a way to solve this issue?
> 
>     Any help would be appreciated.
> 
>     Thanks
> 
>     Nicolas
> 
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-- 
Nicolas Bigler
System Engineer

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