Monitoring items commonly used in MySQL from the perspective of operation and maintenance

MySQL has many indicators of performance and load, and the indicators of each version are also different, but the core indicators that can quickly locate operation and maintenance are those commonly used. To do a monitoring system, especially a monitoring system for mass database instances, each more monitoring index will require higher requirements for the monitoring system. There are also different monitoring indicators and frequencies for different personnel. Operation and maintenance personnel, R & D personnel and testers use different monitoring roles and need different monitoring indicators. It is not that the more indicators monitored, the better. It is enough. There are many monitoring indicators. Only those used at ordinary times are monitored, and those not used are not monitored. The following are some core indicators that are necessary for quick troubleshooting from an O & M perspective, for reference only: