112 lines
4.8 KiB
Plaintext
112 lines
4.8 KiB
Plaintext
groups:
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- name: blackbox
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rules:
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- alert: Icmp4Timeout
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expr: (probe_success{job="icmp4"} == 0 and on(hostname) ALERTS{alertname="InstanceDown"} == 0) or (probe_success{job="icmp4",hostname=~"zuckerwatte|aubergine|glueckskeks"} == 0)
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for: 5m
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annotations:
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description: 'ICMP requests to the primary IPv4 address timed out'
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summary: 'Instance {{ $labels.instance }} does not respond to ICMPv4 echo requests'
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- alert: Icmp6Timeout
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expr: (probe_success{job="icmp6"} == 0 and on(hostname) ALERTS{alertname="InstanceDown"} == 0) or (probe_success{job="icmp6",hostname=~"zuckerwatte|aubergine|glueckskeks"} == 0)
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for: 5m
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annotations:
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description: 'ICMP requests to the primary IPv6 address timed out'
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summary: 'Instance {{ $labels.instance }} does not respond to ICMPv6 echo requests'
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- name: node
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rules:
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- alert: InstanceDown
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expr: up{job="node"} == 0
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for: 5m
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annotations:
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description: 'The instance is down for more than 5 minutes'
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summary: 'Instance {{ $labels.instance }} is down'
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- alert: ExporterDown
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expr: up{job!="node"} == 0 and ON(hostname) ALERTS{alertname="InstanceDown"} == 0
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for: 5m
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annotations:
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description: 'An exporter is down for more than 5 minutes'
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summary: 'Exporter {{ $labels.instance }} is down'
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- alert: InstanceHighCpu
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expr: 100 - (avg(rate(node_cpu_seconds_total{mode="idle"}[5m])) BY (instance) * 100) > 90
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for: 5m
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annotations:
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description: 'CPU usage above 90% for more than 5m'
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summary: 'Instance {{ $labels.instance }}: cpu usage at {{ $value }}'
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value: '{{ $value }}'
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- alert: InstanceHighCpuLong
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expr: 100 - (avg(rate(node_cpu_seconds_total{mode="idle"}[5m])) BY (instance) * 100) > 90
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for: 30m
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annotations:
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description: 'CPU usage above 90% for more than 30m'
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summary: 'Instance {{ $labels.instance }}: persistent cpu usage at {{ $value }}'
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value: '{{ $value }}'
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- alert: InstanceLowMem
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expr: node_memory_MemAvailable_bytes / 1024 / 1024 < node_memory_MemTotal_bytes / 1024 / 1024 / 10
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for: 3m
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annotations:
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description: 'Less than 10% of free memory'
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summary: 'Instance {{ $labels.instance }}: {{ $value }}MB of free memory'
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value: '{{ $value }}'
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- alert: InstanceLowDiskPrediction4Hours
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expr: predict_linear(node_filesystem_free_bytes{device=~"/dev/.*",job="node"}[1h], 4 * 3600) < 0
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for: 30m
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annotations:
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description: 'Disk {{ $labels.mountpoint }} ({{ $labels.device }}) will be full in less than 4 hours'
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summary: 'Instance {{ $labels.instance }}: Disk {{ $labels.mountpoint }} ({{ $labels.device }}) will be full in less than 4 hours'
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- alert: InstanceLowDiskPrediction12Hours
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expr: predict_linear(node_filesystem_free_bytes{device=~"/dev/.*",job="node"}[3h], 12 * 3600) < 0
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for: 60m
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annotations:
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description: 'Disk {{ $labels.mountpoint }} ({{ $labels.device }}) will be full in less than 12 hours'
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summary: 'Instance {{ $labels.instance }}: Disk {{ $labels.mountpoint }} ({{ $labels.device }}) will be full in less than 12 hours'
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- alert: InstanceLowDiskAbs
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expr: node_filesystem_avail_bytes{mountpoint="/"} / 1024 / 1024 < 1024
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for: 1m
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annotations:
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description: 'Less than 1GB of free disk space left on the root filesystem'
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summary: 'Instance {{ $labels.instance }}: {{ $value }}MB free disk space on {{ $labels.device }}'
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value: '{{ $value }}'
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- alert: InstanceLowDiskPerc
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expr: 100 * (node_filesystem_free_bytes / node_filesystem_size_bytes) < 10
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for: 1m
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annotations:
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description: 'Less than 10% of free disk space left on a device'
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summary: 'Instance {{ $labels.instance }}: {{ $value }}% free disk space on {{ $labels.device }}'
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value: '{{ $value }}'
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- alert: ServiceFailed
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expr: node_systemd_unit_state{state="failed"} > 0
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for: 1m
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annotations:
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description: 'A systemd unit went into failed state'
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summary: 'Instance {{ $labels.instance }}: Service {{ $labels.name }} failed'
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value: '{{ $labels.name }}'
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- alert: ServiceFlapping
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expr: changes(node_systemd_unit_state{state="failed"}[5m]) > 5 or
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(changes(node_systemd_unit_state{state="failed"}[1h]) > 15 unless changes(node_systemd_unit_state{state="failed"}[30m]) < 7)
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annotations:
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description: 'A systemd service changed its state more than 5x/5min or 15x/1h'
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summary: 'Instance {{ $labels.instance }}: Service {{ $labels.name }} is flapping'
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value: '{{ $labels.name }}'
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- name: fastd
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rules:
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- alert: FastdNoTraffic
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expr: irate(fastd_tx_bytes[5m]) == 0 and ON(hostname) (time() - fastd_uptime_seconds{job="node"}) / 60 > 30
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for: 5m
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annotations:
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description: 'No TX data was seen on a fastd interface for more than 5 minutes'
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summary: 'Instance {{ $labels.instance }}: No traffic on {{ $labels.interface }}'
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