I have a problem connecting to the database although the data is correct. Why doesn’t he want to let it go further?
Database Connection Error The provided database hostname, port, username, and/or password is invalid.
I’m pinning the screenshot.
Try changing the database username to without the underscore
Is your database reachable from the suite instance?
On separate server with mysql tools installed
mysql -u <username> -p -h <hostname/ipaddr>
Is mysql ‘listening?’
On DB Server - are ports open, firewall rule allowed in, iptables/ufw?
lsof -i -n -P | grep mysql
mysqld 1556 markus 10u IPv4 0x6ad3fd78a9051969 0t0 TCP 127.0.0.1:3306 (LISTEN)
Does DB user have appropriate permissions for remote connections?
GRANT ALL PRIVILEGES ON *.* TO 'username'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;
Also double-check you have the necessary PHP modules installed and activated: mysqli
I check atabase username to without the underscore, is not working same error
Try change username to 8 characters long, starting with letter, only letters and numbers.
Also change password to 8 characters long, only letters and numbers.