Rolling Restart of MySQL NDB Cluster
How to Perform a Rolling Restart of MySQL NDB Cluster? When you need to restart all of the nodes in a cluster for a change to take effect, you’ll need to use a rolling restart. Instead of shutting down the entire cluster, you can restart each node individually to keep the cluster serving requests while the changes are made. Most processes, such as changing config.ini settings, can be performed using this method (ie. DataMemory, MaxNoOfConcurrentTransactions,