Hi,

You can find the MaxScale tutorial on the MariaDB KB: https://mariadb.com/kb/en/mariadb-maxscale-23-setting-up-mariadb-maxscale/

There's also a MaxScale mailing list <https://groups.google.com/forum/#!forum/maxscale>.

Markus

On 4/24/19 11:53, Witold Filipczyk wrote:
Hi,
I have simple lua script:

cdb = require("cdb")

function read_auth()
         local db = cdb.open("/etc/mysql/proxy/data.cdb")
         local value = db:get(proxy.connection.client.username)
         db:close()

         if value == nil
         then
                 proxy.response.type = proxy.MYSQLD_PACKET_ERR
                 proxy.response.errmsg = "Access denied"
                 return proxy.PROXY_SEND_RESULT
         end
end

Format of data:
username1 1
username2 1
and so on.

Unfortunately after upgrade from mariadb-10.1 to mariadb-10.3 on buster 
mysql-proxy is defunct.
Cannot get "mysql prompt".

I tried to replace mysql-proxy by maxscale-2.3.6, but without success.
Failed to load users from server 'server1': Lost connection to MySQL server 
during query
Aborted connection 8578832 to db: 'mysql' user: 'debian-sys-maint' host: 
'localhost' (Got an error writing communication packets)

Note that there is a few hundreds thousands users in mysql.user, but in 
data.cdb only a few hundreds.
Could you point me to the right place, where to find info how to fix 
mysql-proxy, or configure maxscale, or some alternative to both?

Witold Filipczyk

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--
Markus Mäkelä, Senior Software Engineer
MariaDB Corporation
t: +358 40 7740484 | IRC: markusjm@freenode

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