question about the sync relationship of my local and DB3 network

[xuman2019]

./bin/db3cdc sync --db3-node-grpc-url https://grpc.devnet.db3.network\
--password mysql_password
--user mysql_root_user
--master-host mysql_host
--master-port mysql_port

MySQL database is local and I intended to sync it to DB3,
--password
is my local DB password or the corresponding password in DB3?
--user
is my local DB user name or the corresponding user name in DB3?
--master-host
is my local DB hostname 127.0.0.1 or the backup_master?
--master-port
is my local DB port 3306, or is there a backup port for me in your testnet node?

[xuman2019]

When the sync process began, it may print something like this: