监控kubernetes PODS上运行的线程数

Question

I have a use case where we need monitor the threads inside our pods, by using "kubectl top" i am able to monitor CPU, MEMORY.I am new to kubernetes and need to monitor the threads inside our pods.

NAME                   CPU(cores)   CPU%      MEMORY(bytes)   MEMORY%
ip-XXX.ec2.internal    222m         11%       3237Mi          41%
ip-YYY.ec2.internal    91m          9%        2217Mi          60%

Answer 1

You need to instrument your code using some standard library depending on the language the application is written and then you can expose the metrics at /metrics endpoint which can be scraped by prometheus and shown in a Grafana dashboard.

If it's a JVM based app then micrometer is easy to use and exposes some metrics by default.

All other major languages has prometheus client library which can used to instrument code and expose metrics.