my.cnf：为所有 NDB 集群可执行文件指定选项。您应该熟悉此文件，这是因为之前使用 MySQL 时会接触到，每个在集群中运行的可执行文件都必须能够访问此文件。my.cnf: Specifies options for all NDB Cluster executables. This file, with which you should be familiar with from previous work with MySQL, must be accessible by each executable running in the cluster.

config.ini：此文件，有时也称为全局配置文件，仅由 NDB 集群管理服务器读取，然后将其中包含的信息分发给参与集群的所有进程。config.ini 包含集群中每个节点的描述。这包括数据节点的配置参数以及集群中所有节点之间连接的配置参数。如需快速参考此文件中可能出现的各个部分，以及每个部分中可能放置的配置参数类型，请参见 config.ini 文件的各个部分。config.ini: This file, sometimes known as the global configuration file, is read only by the NDB Cluster management server, which then distributes the information contained therein to all processes participating in the cluster. config.ini contains a description of each node involved in the cluster. This includes configuration parameters for data nodes and configuration parameters for connections between all nodes in the cluster. For a quick reference to the sections that can appear in this file, and what sorts of configuration parameters may be placed in each section, see Sections of the config.ini File.

使用 --initial 选项启动管理服务器。 当使用 --initial 时，全局配置文件将被重新读取，任何现有的缓存文件将被删除，管理服务器创建一个新的配置缓存。The management server is started using the --initial option.  When --initial is used, the global configuration file is re-read, any existing cache files are deleted, and the management server creates a new configuration cache.

管理服务器使用 --reload 选项启动。 --reload 选项使管理服务器将其缓存与全局配置文件进行比较。如果它们不同，管理服务器将创建新的配置缓存；任何现有的配置缓存都会被保留，但不会使用。如果管理服务器的缓存与全局配置文件包含相同的配置数据，则使用现有缓存，不会创建新的缓存。The management server is started using the --reload option.  The --reload option causes the management server to compare its cache with the global configuration file. If they differ, the management server creates a new configuration cache; any existing configuration cache is preserved, but not used. If the management server's cache and the global configuration file contain the same configuration data, then the existing cache is used, and no new cache is created.

管理服务器使用 --config-cache=FALSE 启动。 这会禁用 --config-cache（默认启用），并可用于强制管理服务器完全绕过配置缓存。在这种情况下，管理服务器会忽略可能存在的任何配置文件，总是从 config.ini 文件中读取其配置信息。The management server is started using --config-cache=FALSE.  This disables --config-cache (enabled by default), and can be used to force the management server to bypass configuration caching altogether. In this case, the management server ignores any configuration files that may be present, always reading its configuration data from the config.ini file instead.

未找到配置缓存。 在这种情况下，管理服务器读取全局配置文件，并创建一个缓存，其中包含与文件中相同的配置信息。No configuration cache is found.  In this case, the management server reads the global configuration file and creates a cache containing the same configuration data as found in the file.