April 2010
Intermediate to advanced
276 pages
6h 16m
English
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Adding storage nodes online
The ability to add a new node without any downtime is a relatively new feature of MySQL Cluster which dramatically improves long-term uptime in cases where the regular addition of nodes is required, for example, where data volume or query load is continually increasing.
Getting ready
In this recipe, we will show an example of how to add two nodes to an existing two-node cluster (while maintaining NoOfReplicas=2 or two copies of each fragment of data).
The start point for this recipe is a cluster with two storage nodes and one management node running successfully with some data imported (such as the world database as covered in Chapter 1). Ensure that the world database has been imported as an NDB table.
How to do it... ...
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