概述显示了 MySQL Enterprise Monitor 监控的 MySQL 集群、组、实例和主机的高级摘要 。
概述总结了与上下文选择、数据库可用性、问题主机、 问题 MySQL 实例以及任何当前 MySQL 实例或主机相关的各种关键统计数据，这些实例或主机具有针对它们的活动关键或紧急级别事件。它以这种方式设计，为您提供需要立即关注的资产的快速高级图片，并为您提供环境中 MySQL 实例的行为方式的最新概况。
概述 的内容取决于在页面顶部的目标选择菜单中所做的选择。可以进行以下选择：
全局概览：全局摘要和所有目标的默认上下文选择。概览显示所有受监控资产的摘要。
Group Overview：（仅当您创建了组或正在监视复制拓扑时才显示）显示从 Global Summaries菜单中选择的组或拓扑的概述。显示的信息仅与所选组或复制拓扑的内容有关。
MySQL InnoDB Cluster：（仅当您正在监视 InnoDB Cluster 或 Group Replication 拓扑时才显示）显示从Global Summaries 菜单中选择的 InnoDB Cluster 或 Group Replication 拓扑的概览。显示的信息仅与所选组或复制拓扑的内容有关。
笔记Group Replication 拓扑包含在 Global Summaries菜单 的InnoDB Clusters部分 。
MySQL NDB Cluster Overview: (present only if you are monitoring MySQL NDB Clusters) displays the overview of the MySQL NDB Cluster selected from the Global Summaries menu. The information displayed relates to the contents of the NDB Cluster, only.
MySQL Instance Overview: displays the overview of the MySQL instance selected from the All Targets menu. The information displayed relates to the selected MySQL instance, only. Information on the instance's hostname, port, version, and directory paths is also displayed.
OS Host Overview: displays the overview of the host selected from the All Targets menu. The information displayed relates to the selected MySQL instance, only. Information on the filesystems and network interfaces is also displayed.
NDB API Node Overview: (present only if you are monitoring MySQL NDB Clusters) displays the overview of the NDB API node selected from the All Targets menu. The information displayed relates to the selected node, only.
NDB Data Node Overview: (present only if you are monitoring MySQL NDB Clusters) displays the overview of the NDB Data node selected from the All Targets menu. The information displayed relates to the selected node, only.
NDB Management Node Overview: (present only if you are monitoring MySQL NDB Clusters) displays the overview of the NDB API node selected from the All Targets menu. The information displayed relates to the selected node, only.
代理概述：显示从所有目标菜单中选择的 MySQL Enterprise Monitor 代理的概述。显示的信息仅与所选代理有关。还会显示有关代理主机的信息。