Luckperms should use 10 connections per server as it is said on the wiki. But it's totally not the case for me.
I have two servers connected on my mysql database. Luckperms is the only plugin that have access to the database.
On the two servers, the max-pool-size is set to 10.
On the mysql server, the max user connections is 100 and the max connections is 10 000
But, when I start my servers and then try to connect to my phpmyadmin pannel, I got this:
#1203 - User 6620170801326b already has more than 'max_user_connections' active connections
Luckperms should use only 20/100 connections, but it uses 100/100! And if I start a third server, it can't connect to the mysql database! Why?!

Close one of the servers and then you'll be able to connect.

Perhaps you have another plugin also connecting to the database?

You can use the

SHOW PROCESSLIST;

command to view the active connections.

LuckPerms defers connection handling to Hikari - it's very unlikely that the issue is being caused by it.

I changed the password so that not any other plugin can use the database. And I can't even do the show processlist command because the plugin is using all the connection slots so I can't connect to the database