MySQL是一種開源的關系型數據庫管理系統。它支持多種編程語言，并可在多種操作系統上運行。MySQL報告（mysqlreport）是MySQL的一個工具，可以幫助你了解MySQL數據庫服務器及其配置的健康狀況。它提供了有關服務器各個方面的豐富信息，包括查詢緩存、表緩存、線程運行狀況、連接及其使用情況等。

# 安裝mysqlreport
sudo apt-get update
sudo apt-get install mysql-client-5.7
sudo apt-get install libdbd-mysql-perl libterm-readkey-perl
# 執行mysqlreport
mysqlreport --user=username --password=password --host=localhost --port=3306
# 輸出示例
General Report                             [OK]
|-- Check MySQL version
|-- MySQL version
|-- MySQL version count
|-- MySQL uptime
|-- MySQL restarted count
|-- Memory usage
|-- Swap usage
Connection Report                          [OK]
|-- Connection count
|-- Connection usage
|-- Connection usage % of max allowed
|-- Connection usage per hour
|-- Connection usage per minute
|-- Connection usage per second
|-- Connection usage per day
|-- Connection usage per week
|-- Connection usage per month
|-- Connection usage per year
Query Cache Report                          [OK]
|-- Query cache size
|-- Query cache utilization
|-- Query cache free blocks
|-- Query cache hits
|-- Query cache miss
|-- Query cache efficiency
Table Cache Report                          [OK]
|-- Table cache size
|-- Table cache usage
|-- Table cache usage % of max allowed
|-- Table cache used per hour
|-- Table cache used per minute
|-- Table cache used per second
|-- Table cache used per day
|-- Table cache used per week
|-- Table cache used per month
|-- Table cache used per year
Thread Report                               [OK]
|-- Thread count
|-- Thread running count
|-- Thread cache hit rate
|-- Thread creation rate
|-- Thread abort rate
Index Usage Report                          [OK]
|-- Index hit rate
|-- Top 10 access by number of operations
|-- Top 10 access by wait time
Query Report                                [OK]
|-- Top 10 query count
|-- Top 10 query count by hour
|-- Top 10 query count by minute
|-- Top 10 query count by second
|-- Top 10 query count by day
|-- Top 10 query count by week
|-- Top 10 query count by month
|-- Top 10 query count by year
|-- Top 10 query response time
|-- Top 10 query wait time

如上所示，mysqlreport可以提供非常詳細和有用的MySQL服務器信息，幫助管理員優化服務器配置、提高服務器性能。建議管理員定期運行mysqlreport，確定服務器是否存在問題并及時解決。