diff --git a/example.rules b/example.rules
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index 00000000..b98e3252
--- /dev/null
+++ b/example.rules
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+# The count of CPUs per node, useful for getting CPU time as a percent of total.
+instance:node_cpus:count = count(node_cpu{mode="idle"}) without (cpu,mode)
+
+# CPU in use by CPU.
+instance_cpu:node_cpu_not_idle:rate5m = sum rate(node_cpu{mode!="idle"}[5m])) without (mode)
+
+# CPU in use by mode.
+instance_mode:node_cpu:rate5m = sum rate(node_cpu[5m])) without (cpu)