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## 23.1.7.11 Previous NDB Cluster Issues Resolved in NDB Cluster 8.0 

A number of limitations and related issues that existed in earlier versions of NDB Cluster have been resolved in NDB 8.0. These are described briefly in the following list: 

• Database and table names.  Prior to NDB 8.0.18, when using the NDB  storage engine, the maximum allowed length both for database names and for table names is 63 characters, and a statement using a database name or table name longer than this limit failed with an appropriate error. As of NDB 8.0.18, this restriction is lifted and identifiers for NDB  databases and tables may now use up to 64 bytes, as with other MySQL database and table names. 

• IPv6 support.  Prior to NDB 8.0.22, it was necessary for all network addresses used for connections between nodes within an NDB Cluster to use or to be resolvable to IPv4 addresses. Beginning with NDB 8.0.22, NDB  supports IPv6 addresses for all types of cluster nodes, as well as for applications that use the NDB API or MGM API. 

## 23.2 NDB Cluster Installation 

This section describes the basics for planning, installing, configuring, and running an NDB Cluster. Whereas the examples in Section 23.3, “Configuration of NDB Cluster”  provide more in-depth information on a variety of clustering options and configuration, the result of following the guidelines and procedures outlined here should be a usable NDB Cluster which meets the minimum  requirements for availability and safeguarding of data. 

For information about upgrading or downgrading an NDB Cluster between release versions, see Section 23.2.7, “Upgrading and Downgrading NDB Cluster” . 

This section covers hardware and software requirements; networking issues; installation of NDB Cluster; basic configuration issues; starting, stopping, and restarting the cluster; loading of a sample database; and performing queries. 

NDB Cluster also provides the NDB Cluster Auto-Installer (now deprecated), a web-based graphical installer, as part of the NDB Cluster distribution. The Auto-Installer can be used to perform basic installation and setup of an NDB Cluster on one (for testing) or more host computers. See Section 23.2.8, “The NDB Cluster Auto-Installer (No longer supported)” , for more information. 

Assumptions.  The following sections make a number of assumptions regarding the cluster’s physical and network configuration. These assumptions are discussed in the next few paragraphs. 

Cluster nodes and host computers.  The cluster consists of four nodes, each on a separate host computer, and each with a fixed network address on a typical Ethernet network as shown here: 

<img src='content_image/834837.jpg'>

This setup is also shown in the following diagram: 

