问题描述
例如，如何通过Prometheus监视容器内存使用情况.
Looking for example how to monitor Container Memory Usage with Prometheus.
如果使用此查询，它将报告所有容器正常:
It reports all the containers ok if we using this query:
(container_memory_usage_bytes / container_spec_memory_limit_bytes) * 100 > 90
但是，如果容器没有定义内存限制，则可以正常工作.除数为0，结果为+ Inf，这意味着由于+ Inf匹配>90.
However works ok if container does not have a memory limit defined. The the divisor is 0, and the results are +Inf, meaning that the alert triggers incorrectly since +Inf matches > 90.
关于如何正确使用容器内存使用情况监视的任何建议?
Any suggestions how to properly use Container Memory Usage monitoring?
推荐答案
几天前，我从不同的角度提出了相同的问题.到目前为止，我还没有找到答案.我已经解决了添加另一个标签 has_memory_limit 的问题，该标签仅用于警告已定义限制的容器.
I asked the same question from a different perspective just a few days earlier here. So far I have not found an answer. I have settled with adding another label has_memory_limit that I use to only alert on containers that have a limit defined.
好的，我知道了:
((container_memory_usage_bytes / container_spec_memory_limit_bytes) != +Inf) * 100 > 52
由于正无穷大，负无穷大和NaN是 Prometheus ，您只需使用！= + Inf 即可将其过滤掉.
Since positive infinity, negative infinity and NaN are numbers in Prometheus, you can simply filter them out with != +Inf.
这篇关于Prometheus监视Kubernetes容器内存使用情况并报告容器使用率是否超过90％的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！