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https://github.com/samber/awesome-prometheus-alerts.git
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f25c09350b
Expression Explanation:
The expression calculates the absolute change in CPU usage for containers by comparing the current rate of CPU usage (within the last 1 minute) with the rate of CPU usage from the previous minute. If this change exceeds 25%, the alert is triggered. Additionally, it compares the current rate of CPU usage with the rate from the previous 5 minutes to capture larger trends. If any of these conditions are met, the alert fires.
Alert Details:
- Alert Name: ContainerHighLowChangeCpuUsage
- Trigger Condition: Absolute change in CPU usage exceeding 25%
- Alert Severity: Informational (info)
87 lines
4 KiB
YAML
87 lines
4 KiB
YAML
groups:
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- name: GoogleCadvisor
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rules:
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- alert: ContainerKilled
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expr: 'time() - container_last_seen > 60'
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for: 0m
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labels:
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severity: warning
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annotations:
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summary: Container killed (instance {{ $labels.instance }})
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description: "A container has disappeared\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: ContainerAbsent
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expr: 'absent(container_last_seen)'
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: Container absent (instance {{ $labels.instance }})
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description: "A container is absent for 5 min\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: ContainerHighCpuUtilization
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expr: '(sum(rate(container_cpu_usage_seconds_total{name!=""}[3m])) BY (instance, name) * 100) > 80'
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for: 2m
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labels:
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severity: warning
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annotations:
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summary: Container High CPU utilization (instance {{ $labels.instance }})
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description: "Container CPU utilization is above 80%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: ContainerHighMemoryUsage
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expr: '(sum(container_memory_working_set_bytes{name!=""}) BY (instance, name) / sum(container_spec_memory_limit_bytes > 0) BY (instance, name) * 100) > 80'
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for: 2m
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labels:
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severity: warning
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annotations:
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summary: Container High Memory usage (instance {{ $labels.instance }})
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description: "Container Memory usage is above 80%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: ContainerVolumeUsage
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expr: '(1 - (sum(container_fs_inodes_free{name!=""}) BY (instance) / sum(container_fs_inodes_total) BY (instance))) * 100 > 80'
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for: 2m
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labels:
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severity: warning
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annotations:
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summary: Container Volume usage (instance {{ $labels.instance }})
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description: "Container Volume usage is above 80%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: ContainerHighThrottleRate
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expr: 'rate(container_cpu_cfs_throttled_seconds_total[3m]) > 1'
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for: 2m
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labels:
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severity: warning
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annotations:
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summary: Container high throttle rate (instance {{ $labels.instance }})
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description: "Container is being throttled\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: ContainerHighLowChangeCpuUsage
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expr: '(abs(( sum by (instance, name) (rate(container_cpu_usage_seconds_total{name!=""}[1m])) * 100)- ( sum by (instance, name) (rate(container_cpu_usage_seconds_total{name!=""}[1m] offset 1m)) * 100)) or abs(( sum by (instance, name) (rate(container_cpu_usage_seconds_total{name!=""}[1m])) * 100)- ( sum by (instance, name) (rate(container_cpu_usage_seconds_total{name!=""}[5m] offset 1m)) * 100)) )>25'
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for: 0m
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labels:
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severity: info
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annotations:
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summary: Container change CPU utilization (instance {{ $labels.instance }})
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description: "This alert rule monitors the absolute change in CPU usage within a time window and triggers an alert when the change exceeds 25%.\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: ContainerLowCpuUtilization
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expr: '(sum(rate(container_cpu_usage_seconds_total{name!=""}[3m])) BY (instance, name) * 100) < 20'
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for: 7d
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labels:
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severity: info
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annotations:
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summary: Container Low CPU utilization (instance {{ $labels.instance }})
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description: "Container CPU utilization is under 20% for 1 week. Consider reducing the allocated CPU.\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: ContainerLowMemoryUsage
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expr: '(sum(container_memory_working_set_bytes{name!=""}) BY (instance, name) / sum(container_spec_memory_limit_bytes > 0) BY (instance, name) * 100) < 20'
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for: 7d
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labels:
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severity: info
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annotations:
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summary: Container Low Memory usage (instance {{ $labels.instance }})
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description: "Container Memory usage is under 20% for 1 week. Consider reducing the allocated memory.\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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