Cosmos sdk network connection issue

I want to add new node to the blockchain network based on cosmos sdk, I have genesis.json and config.toml. And update moniker. Then running it. But I just get this messages.
Error reconnecting to peer. Trying again addr=
dialing failed (attempts: 7): auth failure: conn.ID

What do I miss?

Sounds like you need to add peers to your config.toml file

If you have further questions, you could ask in Cosmos Developers

Thank you for your reply.
Then I guess it is related to persistent_peers in config.toml.
The persistent peers format is hash number@domain. How do I generate hash number for the domain peer?