系统环境：
1.CPU
指标：%user %nice %sys %iowait %irq %soft %steal %guest %idle
2.MEM
指标：memtotal memused memfree swaptotal swapused swapfree memfree.percent memused.percent swapused.percent
3.DISK
指标：df.bytes.total df.bytes.used df.bytes.free df.bytes.used.percent df.bytes.free.percent df.inodes.total df.inodes.used df.inodes.free df.inodes.used.percent df.inodes.free.percent df.statistics.total df.statistics.used df.statistics.used.percent
4.LOAD
指标：load.1min load.5min load.15min
5.IO
指标：disk.io.read_requests disk.io.read_merged disk.io.read_sectors disk.io.msec_read disk.io.write_requests disk.io.write_merged disk.io.write_sectors disk.io.msec_write disk.io.ios_in_progress disk.io.msec_total disk.io.msec_weighted_total disk.io.read_bytes disk.io.write_bytes disk.io.avgrq_sz disk.io.avgqu_sz disk.io.await disk.io.svctm disk.io.util
6.NET
指标：net.if.in.bytes net.if.in.packets net.if.in.errors net.if.in.dropped net.if.in.fifo.errs net.if.in.frame.errs net.if.in.compressed net.if.in.multicast net.if.out.bytes net.if.out.packets net.if.out.errors net.if.out.dropped net.if.out.fifo.errs net.if.out.collisions net.if.out.carrier.errs net.if.out.compressed net.if.total.bytes net.if.total.packets net.if.total.errors net.if.total.dropped
7.SOCKET
指标：ss.slabinfo.timewait ss.estab ss.closed ss.orphaned ss.synrecv ss.timewait
应用环境：
1.端口
2.进程 （D、Z状态）
3.日志 （应用日志、系统日志）
4.服务状态
业务环境：
1.URL code值监控
2.URL 响应时间
3.request的大小
4.IP访问统计
5.QBS／TPS
原文：https://www.cnblogs.com/pycode/p/9495846.html