MySQL 8.4 Release Notes
接下来的几节包含关于 NDB 节点配置参数以及 NDB 特定的 mysqld 选项和变量的信息，这些内容自 NDB 8.0 以来在 NDB 8.4 中已被添加、弃用或移除。The next few sections contain information about
NDB node configuration parameters and
NDB-specific mysqld options and variables that
have been added to, deprecated in, or removed from NDB
8.4 since NDB 8.0.
以下节点配置参数已在 NDB 8.4 中添加。The following node configuration parameters have been added in NDB 8.4.
ApiFailureHandlingTimeout：API 节点故障处理的最长时间，超出后将升级处理。0 表示没有时间限制；最小可用值为 10。在 NDB 8.4.5 中添加。ApiFailureHandlingTimeout: Maximum time for API node failure handling before escalating. 0 means no time limit; minimum usable value is 10. Added in NDB 8.4.5.RequireCertificate：节点需要在 TLS 搜索路径中找到密钥和证书。新增于 NDB 8.3.0。RequireCertificate: Node is required to find key and certificate in TLS search path. Added in NDB 8.3.0.RequireLinkTls：只读；如果此连接的任一端点需要 TLS，则设置为 true。新增于 NDB 8.3.0。RequireLinkTls: Read-only; is set to true if either endpoint of this connection requires TLS. Added in NDB 8.3.0.RequireTls：客户端连接必须先使用 TLS 进行身份验证，否则不可使用。新增于 NDB 8.3.0。RequireTls: Client connection must authenticate with TLS before being used otherwise. Added in NDB 8.3.0.RequireTls：要求 TLS 验证的安全连接。新增于 NDB 8.3.0。RequireTls: Require TLS-authenticated secure connections. Added in NDB 8.3.0.
NDB 8.4 中没有节点配置参数被弃用。No node configuration parameters have been deprecated in NDB 8.4.
NDB 8.4 中没有节点配置参数被移除。No node configuration parameters have been removed in NDB 8.4.
在 NDB 8.4 中新增了以下系统变量、状态变量和服务器选项。The following system variables, status variables, and server options have been added in NDB 8.4.
Ndb_schema_participant_count：参与 NDB 架构更改分发的 MySQL 服务器数量。在 NDB 8.4.5 中新增。Ndb_schema_participant_count: Number of MySQL servers participating in NDB schema change distribution. Added in NDB 8.4.5.ndb-mgm-tls：TLS 连接要求是严格还是宽松。在 NDB 8.3.0-ndb-8.3.0 中添加。ndb-mgm-tls: Whether TLS connection requirements are strict or relaxed. Added in NDB 8.3.0-ndb-8.3.0.ndb-tls-search-path：搜索 NDB TLS CA 和私钥的目录。在 NDB 8.3.0-ndb-8.3.0 中添加。ndb-tls-search-path: Directories to search for NDB TLS CAs and private keys. Added in NDB 8.3.0-ndb-8.3.0.ndb_log_cache_size：设置用于记录 NDB 二进制日志的事务缓存大小。在 NDB 8.4.3-ndb-8.4.3 中添加。ndb_log_cache_size: Set size of transaction cache used for recording NDB binary log. Added in NDB 8.4.3-ndb-8.4.3.
在 NDB 8.4 中没有系统变量、状态变量或服务器选项被废弃。No system variables, status variables, or server options have been deprecated in NDB 8.4.