Shulou(Shulou.com)06/01 Report--

What is the maximum number of MySQL servers in a group?A group can consist of maximum 9 servers. Attempting to add another server to a group with 9 members causes the request to join to be refused. This limit has been identified from testing and benchmarking as a safe boundary where the group performs reliably on a stable local area network. There are up to 9 servers in a group. Trying to add a server to this group of nine servers will cause the request to be rejected. This limitation is demonstrated in testing and benchmarking as a security boundary. Within this boundary, group replication can run reliably on a stable local network.

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