Addprocs() error, add remote machine

Specific Domains Julia at Scale
1

I have several machines in the LAN, and run the addprocs() on one machine to add cores from another remote machine. I do not know how to set the user password in addprocs(). The error is as follows.
Can anyone give me some suggestion? Thanks!

error
error835×434 27.5 KB

The system is information is as follows
捕获

2

Solved by creating public key file using SSH.