# Information_Schema Database 
+ `INFORMATION_SCHEMA.CLUSTER_INFO` 
  + Provides the current topology information of the cluster, the version information of each node, the Git Hash corresponding to the version, the startup time of each node, and the running time of each instance
  + When the cluster is upgraded or patched to determine whether each component version is valid, you can query this table
  + `VERSION` : the semantic version number of the corresponding node
  + `START_TIME` : The start time of the corresponding node
  + `UPTIME` : The time when the corresponding node has been running

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INFORMATION_SCHEMA
INFORMATION_SCHEMA.CLUSTER_INFO
- CLUSTER_INFO provides the current topology information of the cluster, the version information of each node, the Git Hash corresponding to the version, the startup time of each node, and the running time of each instance
- When the cluster is upgraded or patched to determine whether each component version is valid, you can query this table
- VERSION in the table: the semantic version number of the corresponding node
- START_TIME in the table: the start time of the corresponding node
- UPTIME in the table: the time the corresponding node has been running