Prometheus CPU Limits

# CPU抑制时间超过1s时产生告警
rate(container_cpu_cfs_throttled_seconds_total{namespace=~"wordpress-.*"}[1m]) > 1

# CPU抑制周期占可用周期的一半时产生告警
sum(increase(container_cpu_cfs_throttled_periods_total{container!=""}[5m])) by (container, pod, namespace)/sum(increase(container_cpu_cfs_periods_total{}[5m])) by (container, pod, namespace) *100 > 50

参考：
https://mp.weixin.qq.com/s?__biz=MzA4Nzg5Nzc5OA==&mid=2651735212&idx=1&sn=425c465cc5a163236e38c600da461919&chksm=8bc88705bcbf0e139b2fcc5b2adc897dce66d7ec3dfced413111325c738b41debf3b01212299&mpshare=1&scene=23&srcid=0620yYXAAnESiA5snzopNw9k&sharer_sharetime=1687221014399&sharer_shareid=99d28db6e2c8764bfd809c1cf4642e15#rd