mysqld_multi can't start

OperationalError at /base/
(2003, 'Can\‘t connect to MySQL server on \‘127.0.0.1\’ (111 “Connection refused”)’)

i can’t not start MariaDB on port 3307. pls help me

this log

pdns_server[6064]: About to create 3 backend threads for UDP
pdns_server[6064]: gmysql Connection failed: Unable to connect to database: Can’t connect to MySQL server on ‘127.0.0.1’ (111 "Connection refus
pdns_server[6064]: Caught an exception instantiating a backend: Unable to launch gmysql connection: Unable to connect to database: Can’t connec
pdns_server[6064]: Cleaning up
pdns_server[6064]: Distributor caught fatal exception: Unable to launch gmysql connection: Unable to connect to database: Can’t connect to MySQ
systemd[1]: pdns.service: main process exited, code=exited, status=1/FAILURE
systemd[1]: Unit pdns.service entered failed state.
systemd[1]: pdns.service failed.
postfix/pickup[1267]: 345DF783A: uid=0 from=

systemctl start mysqld@1
``` systemctl start mysqld@1 ```
config filemy.cnf [mysqld] [mysqld1] but i start : systemctl status mysqld@mysqld1.service errore: mysqld@mysqld1.service - MySQL Multi Server for instance mysqld1 Loaded: loaded (/etc/systemd/system/mysqld@.service; enabled; vendor preset: disabled) Active: failed (Result: start-limit) since Tue 2018-05-08 10:09:39 UTC; 16h ago Process: 2645 ExecStart=/usr/bin/mysqld_multi start %i (code=exited, status=1/FAILURE)

Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.

Help me pls