在本节中，我们讨论通过创建和编辑配置文件来手动配置已安装的 NDB Cluster。

对于我们的四节点、四主机 NDB Cluster（请参阅 集群节点和主机计算机），有必要编写四个配置文件，每个节点主机一个。

配置数据节点和 SQL 节点。 my.cnf数据节点所需 的文件非常简单。配置文件应位于/etc目录中，并且可以使用任何文本编辑器进行编辑。（如果该文件不存在，则创建该文件。）例如：

$> vi /etc/my.cnf

对于我们示例设置中的每个数据节点和 SQL 节点， my.cnf应该如下所示：

[mysqld]
# Options for mysqld process:
ndbcluster                      # run NDB storage engine

[mysql_cluster]
# Options for NDB Cluster processes:
ndb-connectstring=198.51.100.10  # location of management server

输入上述信息后，保存此文件并退出文本编辑器。为托管数据节点 “ A ”、数据节点“ B ”和 SQL 节点的机器执行此操作。

配置管理节点。  配置管理节点的第一步是创建可以在其中找到配置文件的目录，然后创建文件本身。例如（运行为 root）：

$> mkdir /var/lib/mysql-cluster
$> cd /var/lib/mysql-cluster
$> vi config.ini

对于我们的代表性设置，该config.ini 文件应如下所示：

[ndbd default]
# Options affecting ndbd processes on all data nodes:
NoOfReplicas=2    # Number of fragment replicas
DataMemory=80M    # How much memory to allocate for data storage
IndexMemory=18M   # How much memory to allocate for index storage
                  # For DataMemory and IndexMemory, we have used the
                  # default values. Since the "world" database takes up
                  # only about 500KB, this should be more than enough for
                  # this example NDB Cluster setup.
                  # NOTE: IndexMemory is deprecated in NDB 7.6 and later; in
                  # these versions, resources for all data and indexes are
                  # allocated by DataMemory and any that are set for IndexMemory
                  # are added to the DataMemory resource pool
ServerPort=2202   # This the default value; however, you can use any
                  # port that is free for all the hosts in the cluster
                  # Note1: It is recommended that you do not specify the port
                  # number at all and simply allow the default value to be used
                  # instead
                  # Note2: The port was formerly specified using the PortNumber
                  # TCP parameter; this parameter is no longer available in NDB
                  # Cluster 7.5.

[ndb_mgmd]
# Management process options:
HostName=198.51.100.10          # Hostname or IP address of management node
DataDir=/var/lib/mysql-cluster  # Directory for management node log files

[ndbd]
# Options for data node "A":
                                # (one [ndbd] section per data node)
HostName=198.51.100.30          # Hostname or IP address
NodeId=2                        # Node ID for this data node
DataDir=/usr/local/mysql/data   # Directory for this data node's data files

[ndbd]
# Options for data node "B":
HostName=198.51.100.40          # Hostname or IP address
NodeId=3                        # Node ID for this data node
DataDir=/usr/local/mysql/data   # Directory for this data node's data files

[mysqld]
# SQL node options:
HostName=198.51.100.20          # Hostname or IP address
                                # (additional mysqld connections can be
                                # specified for this node for various
                                # purposes such as running ndb_restore)

创建所有配置文件并指定这些最少的选项后，您就可以继续启动集群并验证所有进程是否都在运行。我们在第 21.3.4 节，“NDB Cluster 的初始启动”中讨论了这是如何完成的 。

有关可用的 NDB Cluster 配置参数及其用途的更多详细信息，请参阅 第 21.4.3 节，“NDB Cluster 配置文件”和 第 21.4 节，“NDB Cluster 的配置”。有关与备份相关的 NDB Cluster 配置，请参阅 第 21.6.8.3 节，“NDB Cluster 备份的配置”。