(Cacti is a graphical analysis tool for network traffic monitoring based on PHP, mysql, SNMP and RRDTOOL. Get data through snmpget and use RRDTOOL to draw graphs. Its main function is to use SNMP service to get data, and then use RRDTOOL to store and update data. When users need to view data, use RRDTOOL to generate graphs and present them to users. Each user can be specified to view the tree structure, host and any graph. Here, we have introduced the source code installation and RPM package installation of cacti monitoring system, which is worth pointing out!)