--bind-address

使 ndbd 绑定到特定的网络接口（主机名或 IP 地址）。此选项没有默认值。Causes ndbd to bind to a specific network interface (host name or IP address). This option has no default value.

--character-sets-dir

包含字符集的目录。Directory containing character sets.

--connect-delay=#

确定在启动时尝试联系管理服务器之间的等待时间（尝试次数由--connect-retries选项控制）。默认值为 5 秒。Determines the time to wait between attempts to contact a management server when starting (the number of attempts is controlled by the --connect-retries option). The default is 5 seconds.

此选项已被弃用，可能在未来的 NDB Cluster 版本中移除。应改用--connect-retry-delay。This option is deprecated, and is subject to removal in a future release of NDB Cluster. Use --connect-retry-delay instead.

--connect-retries=#

设置在放弃之前重试连接的次数；0 表示仅尝试 1 次（且不重试）。默认是 12 次尝试。每次尝试之间的等待时间由--connect-retry-delay选项控制。Set the number of times to retry a connection before giving up; 0 means 1 attempt only (and no retries). The default is 12 attempts. The time to wait between attempts is controlled by the --connect-retry-delay option.

也可以将此选项设置为-1，在这种情况下，数据节点进程会无限期地尝试连接。It is also possible to set this option to -1, in which case, the data node process continues indefinitely to try to connect.

--connect-retry-delay=#

确定在启动时尝试联系管理服务器之间的等待时间（尝试之间的时间由 --connect-retries 选项控制）。默认值为 5 秒。Determines the time to wait between attempts to contact a management server when starting (the time between attempts is controlled by the --connect-retries option). The default is 5 seconds.

该选项取代了 --connect-delay 选项，该选项现在已被弃用，并可能在 NDB Cluster 的未来版本中移除。This option takes the place of the --connect-delay option, which is now deprecated and subject to removal in a future release of NDB Cluster.

此选项的简写形式-r也已弃用，因此可能会被移除。请改用长形式。The short form -r for this option is also deprecated, and thus subject to removal. Use the long form instead.

--connect-string

与--ndb-connectstring相同。Same as --ndb-connectstring.

--core-file

错误时生成核心文件；用于调试。Write core file on error; used in debugging.

--daemon, -d

指示ndbd或ndbmtd以守护进程方式执行。这是默认行为。可以使用--nodaemon防止进程以守护进程方式运行。Instructs ndbd or ndbmtd to execute as a daemon process. This is the default behavior. --nodaemon can be used to prevent the process from running as a daemon.

在 Windows 平台上运行 ndbd 或 ndbmtd 时，此选项没有效果。This option has no effect when running ndbd or ndbmtd on Windows platforms.

--defaults-extra-file

在读取全局文件之后读取给定文件。Read given file after global files are read.

--defaults-file

仅从指定文件读取默认选项。Read default options from given file only.

--defaults-group-suffix

也读取组合了 concat(group, suffix) 的组。Also read groups with concat(group, suffix).

--filesystem-password

通过 stdin、tty 或 my.cnf 文件，将文件系统加密和解密密码传递给数据节点进程。Pass the filesystem encryption and decryption password to the data node process using stdin, tty, or the my.cnf file.

需要 EncryptedFileSystem = 1。Requires EncryptedFileSystem = 1.

更多信息，请参见 第 25.6.19.4 节，“NDB 集群的文件系统加密”。For more information, see Section 25.6.19.4, “File System Encryption for NDB Cluster”.

--filesystem-password-from-stdin

将文件系统加密和解密密码仅通过 stdin 传递给数据节点进程。Pass the filesystem encryption and decryption password to the data node process from stdin (only).

需要 EncryptedFileSystem = 1。Requires EncryptedFileSystem = 1.

更多信息，请参见 第 25.6.19.4 节，“NDB 集群的文件系统加密”。For more information, see Section 25.6.19.4, “File System Encryption for NDB Cluster”.

--foreground

使 ndbd 或 ndbmtd 以前台进程执行，主要用于调试目的。此选项隐含 --nodaemon 选项。Causes ndbd or ndbmtd to execute as a foreground process, primarily for debugging purposes. This option implies the --nodaemon option.

在 Windows 平台上运行 ndbd 或 ndbmtd 时，此选项没有效果。This option has no effect when running ndbd or ndbmtd on Windows platforms.

--help

显示帮助文本并退出。Display help text and exit.

--initial

指示 ndbd 执行初始启动。初始启动会删除由先前实例的 ndbd 为恢复目的创建的任何文件。它还会重新创建恢复日志文件。在某些操作系统上，该过程可能需要相当长的时间。Instructs ndbd to perform an initial start. An initial start erases any files created for recovery purposes by earlier instances of ndbd. It also re-creates recovery log files. On some operating systems, this process can take a substantial amount of time.

此选项还会删除与磁盘表空间相关的所有数据文件以及与以前存在于此数据节点上的日志文件组相关的撤销日志文件（参见 第 25.6.11 节，“NDB Cluster 磁盘表”）。The option also causes the removal of all data files associated with Disk Data tablespaces and undo log files associated with log file groups that existed previously on this data node (see Section 25.6.11, “NDB Cluster Disk Data Tables”).

--initial 启动 仅 应在极特殊情况下用于启动 ndbd 进程；这是因为此选项会删除 NDB Cluster 文件系统中的所有文件，并重新创建所有重做日志文件。具体情况如下：An --initial start is to be used only when starting the ndbd process under very special circumstances; this is because this option causes all files to be removed from the NDB Cluster file system and all redo log files to be re-created. These circumstances are listed here:

使用此选项会阻止StartPartialTimeout和StartPartitionedTimeout配置参数生效。Use of this option prevents the StartPartialTimeout and StartPartitionedTimeout configuration parameters from having any effect.

It is permissible to use this option when starting the cluster for the very first time (that is, before any data node files have been created); however, it is 在多线程系统中 necessary to do so.It is permissible to use this option when starting the cluster for the very first time (that is, before any data node files have been created); however, it is not necessary to do so.

--initial-start

此选项用于执行集群的部分初始启动。每个节点都应使用此选项启动，同时还应使用 --nowait-nodes。This option is used when performing a partial initial start of the cluster. Each node should be started with this option, as well as --nowait-nodes.

假设您有一个数据节点 ID 为 2、3、4 和 5 的 4 节点集群，并且您希望只使用 2、4 和 5 节点进行部分初始启动——也就是忽略节点 3：Suppose that you have a 4-node cluster whose data nodes have the IDs 2, 3, 4, and 5, and you wish to perform a partial initial start using only nodes 2, 4, and 5—that is, omitting node 3:

$> ndbd --ndb-nodeid=2 --nowait-nodes=3 --initial-start
$> ndbd --ndb-nodeid=4 --nowait-nodes=3 --initial-start
$> ndbd --ndb-nodeid=5 --nowait-nodes=3 --initial-start

使用此选项时，您还必须使用 --ndb-nodeid 选项指定要启动的数据节点的节点 ID。When using this option, you must also specify the node ID for the data node being started with the --ndb-nodeid option.

--install[=name]

导致 ndbd 被安装为 Windows 服务。您可以选择为该服务指定一个名称；如果未设置，服务名称默认为 ndbd。虽然最好在 my.ini 或 my.cnf 配置文件中指定其他 ndbd 程序选项，但也可以与 --install 一起使用。然而，在这种情况下，为了 Windows 服务安装成功，--install 选项必须首先指定，然后才能提供其他选项。Causes ndbd to be installed as a Windows service. Optionally, you can specify a name for the service; if not set, the service name defaults to ndbd. Although it is preferable to specify other ndbd program options in a my.ini or my.cnf configuration file, it is possible to use together with --install. However, in such cases, the --install option must be specified first, before any other options are given, for the Windows service installation to succeed.

通常不建议将此选项与--initial选项一起使用，因为这会导致每次服务停止和启动时数据节点文件系统都被清空并重建。如果您打算使用其他任何影响数据节点启动的ndbd选项，包括--initial-start、--nostart以及--nowait-nodes，与--install一起使用时，也应格外小心，并且应确保您完全理解并考虑这样做可能带来的任何后果。It is generally not advisable to use this option together with the --initial option, since this causes the data node file system to be wiped and rebuilt every time the service is stopped and started. Extreme care should also be taken if you intend to use any of the other ndbd options that affect the starting of data nodes—including --initial-start, --nostart, and --nowait-nodes—together with --install, and you should make absolutely certain you fully understand and allow for any possible consequences of doing so.

--install 选项在非 Windows 平台上无效。The --install option has no effect on non-Windows platforms.

--logbuffer-size=#

设置数据节点日志缓冲区的大小。在使用大量额外日志进行调试时，如果日志消息过多，日志缓冲区可能会耗尽空间，导致部分日志消息丢失。在正常操作中不应发生这种情况。Sets the size of the data node log buffer. When debugging with high amounts of extra logging, it is possible for the log buffer to run out of space if there are too many log messages, in which case some log messages can be lost. This should not occur during normal operations.

--login-path

从登录文件读取给定路径。Read given path from login file.

--no-login-paths

跳过从登录路径文件读取选项。Skips reading options from the login path file.

--ndb-connectstring

设置用于连接到 ndb_mgmd 的连接字符串。语法：[nodeid=id;][host=]hostname[:port]。覆盖 NDB_CONNECTSTRING 和 my.cnf 中的条目。Set connection string for connecting to ndb_mgmd. Syntax: [nodeid=id;][host=]hostname[:port]. Overrides entries in NDB_CONNECTSTRING and my.cnf.

--ndb-log-timestamps

设置节点日志中使用的时间戳格式。这是以下值之一：Sets the format used for timestamps in node logs. This is one of the following values:

LEGACY 在 MySQL 8.4 中是默认值，以保持与以前版本的向后兼容性。LEGACY is the default in MySQL 8.4, for backwards compatibility with previous versions.

--ndb-mgmd-host

与--ndb-connectstring相同。Same as --ndb-connectstring.

--ndb-mgm-tls

设置连接到管理服务器所需的 TLS 支持级别；可以是 relaxed 或 strict。relaxed（默认）表示尝试建立 TLS 连接，但不要求成功；strict表示连接必须使用 TLS。Sets the level of TLS support required to connect to the management server; one of relaxed or strict. relaxed (the default) means that a TLS connection is attempted, but success is not required; strict means that TLS is required to connect.

--ndb-nodeid

为此节点设置节点 ID，覆盖任何由 --ndb-connectstring 设置的 ID。Set node ID for this node, overriding any ID set by --ndb-connectstring.

--ndb-optimized-node-selection

启用事务节点选择的优化。默认启用；使用 --skip-ndb-optimized-node-selection 来禁用。Enable optimizations for selection of nodes for transactions. Enabled by default; use --skip-ndb-optimized-node-selection to disable.

--ndb-tls-search-path

指定用于搜索 CA 文件的目录列表。在 Unix 平台上，目录名称用冒号 (:) 分隔；在 Windows 系统上，使用分号 (;) 作为分隔符。目录引用可以是相对路径或绝对路径；它可以包含一个或多个环境变量，每个变量以美元符号 ($) 开头，并在使用前进行展开。Specify a list of directories to search for a CA file. On Unix platforms, the directory names are separated by colons (:); on Windows systems, the semicolon character (;) is used as the separator. A directory reference may be relative or absolute; it may contain one or more environment variables, each denoted by a prefixed dollar sign ($), and expanded prior to use.

搜索从最左边的命名目录开始，按从左到右的顺序进行，直到找到文件。空字符串表示空搜索路径，这会导致所有搜索失败。由单个点 (.) 组成的字符串表示搜索路径仅限于当前工作目录。Searching begins with the leftmost named directory and proceeds from left to right until a file is found. An empty string denotes an empty search path, which causes all searches to fail. A string consisting of a single dot (.) indicates that the search path limited to the current working directory.

如果未提供搜索路径，则使用编译时的默认值。此值取决于所使用的平台：在 Windows 上，它是 \ndb-tls；在其他平台（包括 Linux）上，它是 $HOME/ndb-tls。可以通过使用 -DWITH_NDB_TLS_SEARCH_PATH 编译 NDB Cluster 来覆盖该值。If no search path is supplied, the compiled-in default value is used. This value depends on the platform used: On Windows, this is \ndb-tls; on other platforms (including Linux), it is $HOME/ndb-tls. This can be overridden by compiling NDB Cluster using -DWITH_NDB_TLS_SEARCH_PATH.

--nodaemon

阻止 ndbd 或 ndbmtd 以守护进程方式执行。此选项会覆盖 --daemon 选项。当调试二进制文件时，将输出重定向到屏幕非常有用。Prevents ndbd or ndbmtd from executing as a daemon process. This option overrides the --daemon option. This is useful for redirecting output to the screen when debugging the binary.

在 Windows 上，ndbd 和 ndbmtd 的默认行为是在前台运行，因此在 Windows 平台上使用该选项是多余的，它不会产生任何效果。The default behavior for ndbd and ndbmtd on Windows is to run in the foreground, making this option unnecessary on Windows platforms, where it has no effect.

--no-defaults

除了登录文件之外，不从任何配置文件读取默认选项。Do not read default options from any option file other than login file.

--nostart, -n

指示 ndbd 不要自动启动。使用此选项时，ndbd 会连接到管理服务器，从中获取配置数据，并初始化通信对象。然而，它实际上不会启动执行引擎，除非管理服务器特别请求这样做。这可以通过在管理客户端中发出适当的 START 命令来完成（参见 第 25.6.1 节，“NDB 集群管理客户端中的命令”）。Instructs ndbd not to start automatically. When this option is used, ndbd connects to the management server, obtains configuration data from it, and initializes communication objects. However, it does not actually start the execution engine until specifically requested to do so by the management server. This can be accomplished by issuing the proper START command in the management client (see Section 25.6.1, “Commands in the NDB Cluster Management Client”).

--nowait-nodes=node_id_1[, node_id_2[, ...]]

此选项接受一个数据节点列表，集群在启动之前不会等待这些节点。This option takes a list of data nodes for which the cluster does not wait, prior to starting.

这可以用于以分区状态启动集群。例如，要在一个 4 节点集群中仅启动一半的数据节点（节点 2、3、4 和 5），可以使用 ndbd 进程并加上 --nowait-nodes=3,5 参数启动。在这种情况下，一旦节点 2 和 4 连接，集群就会启动，并且 不会 等待节点 3 和 5 按原计划在 StartPartitionedTimeout 毫秒内连接。This can be used to start the cluster in a partitioned state. For example, to start the cluster with only half of the data nodes (nodes 2, 3, 4, and 5) running in a 4-node cluster, you can start each ndbd process with --nowait-nodes=3,5. In this case, the cluster starts as soon as nodes 2 and 4 connect, and does not wait StartPartitionedTimeout milliseconds for nodes 3 and 5 to connect as it would otherwise.

如果你想像前面的例子一样启动同一个集群，但没有一个 ndbd（例如，节点 3 的主机出现硬件故障），那么可以用 --nowait-nodes=3 启动节点 2、4 和 5。然后，当节点 2、4 和 5 连接时，集群就会启动，而不会等待节点 3 启动。If you wanted to start up the same cluster as in the previous example without one ndbd (say, for example, that the host machine for node 3 has suffered a hardware failure) then start nodes 2, 4, and 5 with --nowait-nodes=3. Then the cluster starts as soon as nodes 2, 4, and 5 connect, and does not wait for node 3 to start.

--print-defaults

打印程序参数列表然后退出。Print program argument list and exit.

--remove[=name]

导致先前作为 Windows 服务安装的 ndbd 进程被移除。可选地，您可以指定要卸载的服务名称；如果未设置，服务名称默认为 ndbd。Causes an ndbd process that was previously installed as a Windows service to be removed. Optionally, you can specify a name for the service to be uninstalled; if not set, the service name defaults to ndbd.

--remove 选项在非 Windows 平台上无效果。The --remove option has no effect on non-Windows platforms.

--usage

显示帮助文本并退出；同 --help。Display help text and exit; same as --help.

--verbose, -v

会在节点日志中写入额外的调试输出。Causes extra debug output to be written to the node log.

您还可以使用 NODELOG DEBUG ON 和 NODELOG DEBUG OFF 在数据节点运行时启用或禁用此额外日志记录。You can also use NODELOG DEBUG ON and NODELOG DEBUG OFF to enable and disable this extra logging while the data node is running.

--version

显示版本信息并退出。Display version information and exit.

ndb_node_id_error.log 是一个包含所引用的 ndbd 进程遇到的所有崩溃记录的文件。此文件中的每条记录都包含简短的错误字符串以及指向该崩溃的跟踪文件的引用。该文件中的典型条目可能如下所示： ndb_node_id_error.log is a file containing records of all crashes which the referenced ndbd process has encountered. Each record in this file contains a brief error string and a reference to a trace file for this crash. A typical entry in this file might appear as shown here:

Date/Time: Saturday 30 July 2004 - 00:20:01
Type of error: error
Message: Internal program error (failed ndbrequire)
Fault ID: 2341
Problem data: DbtupFixAlloc.cpp
Object of reference: DBTUP (Line: 173)
ProgramName: NDB Kernel
ProcessID: 14909
TraceFile: ndb_2_trace.log.2
***EOM***

可以在 ndbd 退出码和数据节点进程异常关闭时生成的信息的列表查看 数据节点错误信息。Listings of possible ndbd exit codes and messages generated when a data node process shuts down prematurely can be found in Data Node Error Messages.

ndb_node_id_trace.log.trace_id 是一个跟踪文件，精确描述了错误发生之前的情况。这些信息对于 NDB Cluster 开发团队的分析非常有用。 ndb_node_id_trace.log.trace_id is a trace file describing exactly what happened just before the error occurred. This information is useful for analysis by the NDB Cluster development team.

可以配置在覆盖旧文件之前创建的这些跟踪文件的数量。trace_id 是一个数字，每次生成新的跟踪文件时都会递增。It is possible to configure the number of these trace files that are created before old files are overwritten. trace_id is a number which is incremented for each successive trace file.

ndb_node_id_trace.log.next 是用于记录下一个要分配的跟踪文件编号的文件。ndb_node_id_trace.log.next is the file that keeps track of the next trace file number to be assigned.

ndb_node_id_out.log 是一个包含 ndbd 进程输出的任何数据的文件。只有在 ndbd 作为守护进程启动时才会创建此文件，这是默认行为。ndb_node_id_out.log is a file containing any data output by the ndbd process. This file is created only if ndbd is started as a daemon, which is the default behavior.

ndb_node_id.pid 是一个文件，包含作为守护进程启动时 ndbd 进程的进程 ID。它还作为锁文件使用，以避免启动具有相同标识符的节点。ndb_node_id.pid is a file containing the process ID of the ndbd process when started as a daemon. It also functions as a lock file to avoid the starting of nodes with the same identifier.

ndb_node_id_signal.log 是一个仅在 ndbd 调试版本中使用的文件，在其中可以追踪 ndbd 进程中所有传入、传出和内部消息及其数据。ndb_node_id_signal.log is a file used only in debug versions of ndbd, where it is possible to trace all incoming, outgoing, and internal messages with their data in the ndbd process.