|NO.Z.00314|——————————|CloudNative|——|KuberNetes&运维.V34|——|监控.v11|PromQL查询_差值|
一、差值:
### --- 函数
~~~ 函数:Delta:差值
二、查看和8h之前的差值是多少
### --- 函数:delta
~~~ 表达式:delta(node_memory_MemFree_bytes[8h])
~~~ 输出结果:和8小时之前的差值

Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart
——W.S.Landor
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