The port 2379 of tidb-pd is only open to the local external IP, and other IPs do not have access to port 2379. Will this affect the PD scheduling of the cluster?

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| username: 啦啦啦啦啦 | Original post link

TiDB and PD internal communication use port 2379, and generally, internal networks do not impose firewall restrictions. You can refer to the network requirements here: