Alerting Rule for High CPU
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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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