mysql slave restore database ERROR 3079 Master A mysql 8
Master B mysql 5.7
Master C mysql 5.7
Slave mysql 8


i create 4 channels on my slave and i can not restore backup from master.

[root@CentOS-76-64-minimal hex]# gunzip &lt; db.gz | mysql -u root -p
Enter password:
ERROR 3079 (HY000) at line 22: Multiple channels exist on the slave. Please provide channel name as an argument.
Try this 

mysql&gt; create database mydb;
mysql&gt; use mydb;
mysql&gt; source db_backup.dump;