Alerting Rule for High CPU
Video Lecture
Description
We will create an alerting rule for high CPU usage reported by any of our node exporters.
The query used in the alert rule was,
rate(node_cpu_seconds_total{job="node",mode="user"}[$__rate_interval]) * 100
The above query will convert the node_cpu_seconds_total value to a percentage for all of my node exporters where the job equals node.
The threshold was configured to be true when the input A is above 50.
To simulate high CPU on a Linux server, you can use a tool called stress.
To install,
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To simulate high CPU usage on CPU 1, use the command,
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