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This article will explain in detail what the K8s node alertmanager monitoring alarm configuration method is, and the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

Overview

The monitoring of the node itself mainly monitors CPU, memory, disk IO and free space of the file system.

For example, for using alertmanager from prometheus to do node alarm, rules configuration can be configured by referring to the following point.

Description

The corresponding metrics varies with different node-exporter versions, so you need to change it by yourself.

CPU monitoring

(1-avg (irate (node_cpu {mode= "idle"} [10m])) by (instance)) * 100

< 90 内存监控 ((node_memory_MemTotal - node_memory_MemFree) / node_memory_MemTotal) * 100 < 90 磁盘IO监控 (max(avg(irate(node_disk_io_time_ms[10m])) by (instance, device)) by (instance))/10 文件系统可用空间监控 max(((node_filesystem_size{fstype=~"ext4|vfat"} - node_filesystem_free{fstype=~"ext4|vfat"}) / node_filesystem_size{fstype=~"ext4|vfat"}) * 100) by (instance) >

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