[TOC] ##### **写速率** 磁盘的写速率的主要指标为`node_disk_written_bytes_total`，它是一个`counter`类型的指标。 ``` # HELP node_disk_written_bytes_total The total number of bytes written successfully. # TYPE node_disk_written_bytes_total counter node_disk_written_bytes_total{device="sda"} 8.971879164928e+12 node_disk_written_bytes_total{device="sdb"} 3.87383296e+08 node_disk_written_bytes_total{device="sdc"} 3.17165568e+08 ... ``` ##### **读速率** 磁盘的读速率主要指标为`node_disk_read_bytes_total`，它是一个`counter`类型的指标。 ``` # HELP node_disk_read_bytes_total The total number of bytes read successfully. # TYPE node_disk_read_bytes_total counter node_disk_read_bytes_total{device="sda"} 2.479593472e+09 node_disk_read_bytes_total{device="sdb"} 1.6577024e+07 node_disk_read_bytes_total{device="sdc"} 1.2345856e+07 ... ``` ##### **IOPS** 每秒钟磁盘的Read与Write的次数，需要用到以下两个指标 ``` # HELP node_disk_writes_completed_total The total number of writes completed successfully. # TYPE node_disk_writes_completed_total counter node_disk_writes_completed_total{device="sda"} 8.6756046e+08 node_disk_writes_completed_total{device="sdb"} 68683 ... # HELP node_disk_reads_completed_total The total number of reads completed successfully. # TYPE node_disk_reads_completed_total counter node_disk_reads_completed_total{device="sda"} 275673 node_disk_reads_completed_total{device="sdb"} 2803 ... ``` ##### Reference * https://www.cnblogs.com/Leslieblog/p/11157958.html