2 Configuration
You have already seen how to produce a basic configuration for a cluster. However, you will almost certainly find that you want to specify some, if not all, of the optional configuration settings; this chapter explains what they all do.
All these settings go in the config.ini file, which is often placed in the DataDir of the management node (conventionally /var/lib/mysql-cluster). If you change this file, you will have to completely restart the cluster either following a process very similar to that of an online upgrade (as described in Chapter 1, “Installation”) or, by doing a backup, a total cluster shutdown, and a re-import.
Note
Technically, the config.ini file can go anywhere, as long as you are in that directory ...
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