Tài liệu High Availability MySQL Cookbook phần 5

It is sometimes necessary to add a management node to an existing cluster if for example,
due to a lack of hardware or time, an initial cluster only has a single management node.
Adding a management node is simple. Firstly, install the management client on the new node
(refer to the recipe in Chapter 1). Secondly, modify the config.ini file, as shown earlier in
this recipe for adding the new management node, and copy this new config.ini file to both
management nodes. Finally, stop the existing management node and start the new one using
the following commands.