cookbooks/prometheus/templates/default/alert_rules.yml.erb

   1 # DO NOT EDIT - This file is being maintained by Chef
   2
   3 groups:
   4   - name: amsterdam
   5     rules:
   6       - alert: pdu current draw
   7         expr: rPDU2PhaseStatusCurrent{site="amsterdam",rPDU2PhaseStatusIndex="1"} / 10 > 10
   8         for: 5m
   9         labels:
  10           alertgroup: "amsterdam"
  11         annotations:
  12           current: "{{ $value | humanize }}A"
  13       - alert: site current draw
  14         expr: sum(rPDU2PhaseStatusCurrent{site="amsterdam",rPDU2PhaseStatusIndex="1"} / 10) > 13
  15         for: 5m
  16         labels:
  17           alertgroup: "amsterdam"
  18         annotations:
  19           current: "{{ $value | humanize }}A"
  20       - alert: site temperature
  21         expr: min(rPDU2SensorTempHumidityStatusTempC{site="amsterdam"}) / 10 < 18 or min(rPDU2SensorTempHumidityStatusTempC{site="amsterdam"}) / 10 > 25
  22         for: 5m
  23         labels:
  24           alertgroup: "amsterdam"
  25         annotations:
  26           temperature: "{{ $value | humanize }}C"
  27       - alert: site humidity
  28         expr: max(rPDU2SensorTempHumidityStatusRelativeHumidity{site="amsterdam"}) / 100 < 0.25 or max(rPDU2SensorTempHumidityStatusRelativeHumidity{site="amsterdam"}) / 100 > 0.65
  29         for: 5m
  30         labels:
  31           alertgroup: "amsterdam"
  32         annotations:
  33           humidity: "{{ $value | humanizePercentage }}"
  34   - name: apache
  35     rules:
  36       - alert: apache down
  37         expr: apache_up == 0
  38         for: 5m
  39         labels:
  40           alertgroup: "{{ $labels.instance }}"
  41       - alert: apache workers busy
  42         expr: sum(apache_workers{state="busy"}) by (instance) / sum(apache_scoreboard) by (instance) > 0.8
  43         for: 5m
  44         labels:
  45           alertgroup: "{{ $labels.instance }}"
  46         annotations:
  47           busy_workers: "{{ $value | humanizePercentage }}"
  48       - alert: apache low request rate
  49         expr: rate(apache_accesses_total[5m]) / rate(apache_accesses_total[1h] offset 1w) < 0.25 and rate(apache_accesses_total[1h] offset 1w) > 2
  50         for: 15m
  51         labels:
  52           alertgroup: "{{ $labels.instance }}"
  53         annotations:
  54           request_rate: "{{ $value | humanizePercentage }}"
  55   - name: chef
  56     rules:
  57       - alert: chef client not running
  58         expr: time() - node_systemd_timer_last_trigger_seconds{name="chef-client.timer"} > 3600
  59         for: 12h
  60         labels:
  61           alertgroup: "{{ $labels.instance }}"
  62         annotations:
  63           down_time: "{{ $value | humanizeDuration }}"
  64   - name: cisco
  65     rules:
  66       - alert: cisco fan alarm
  67         expr: rlPhdUnitEnvParamFan1Status{rlPhdUnitEnvParamFan1Status!="normal"} > 0 or rlPhdUnitEnvParamFan2Status{rlPhdUnitEnvParamFan2Status!="normal"} > 0
  68         for: 5m
  69         labels:
  70           alertgroup: "{{ $labels.site }}"
  71         annotations:
  72           fan_rpm: "{{ with printf \"rlPhdUnitEnvParamFan1Speed{site='%s',instance='%s',rlPhdUnitEnvParamStackUnit='%s'}\" $labels.site $labels.instance $labels.rlPhdUnitEnvParamStackUnit | query }}{{ . | first | value | humanize }}rpm{{end}}"
  73       - alert: cisco temperature alarm
  74         expr: rlPhdUnitEnvParamTempSensorStatus{rlPhdUnitEnvParamTempSensorStatus!="ok"} > 0
  75         for: 5m
  76         labels:
  77           alertgroup: "{{ $labels.site }}"
  78         annotations:
  79           temp_celsius: "{{ with printf \"rlPhdUnitEnvParamTempSensorValue{site='%s',instance='%s',rlPhdUnitEnvParamStackUnit='%s'}\" $labels.site $labels.instance $labels.rlPhdUnitEnvParamStackUnit | query }}{{ . | first | value | humanize }}C{{end}}"
  80       - alert: cisco main power alarm
  81         expr: rlPhdUnitEnvParamMainPSStatus{rlPhdUnitEnvParamMainPSStatus!="normal"} > 0
  82         for: 5m
  83         labels:
  84           alertgroup: "{{ $labels.site }}"
  85       - alert: cisco redundant power alarm
  86         expr: rlPhdUnitEnvParamRedundantPSStatus{rlPhdUnitEnvParamRedundantPSStatus!="normal"} > 0
  87         for: 5m
  88         labels:
  89           alertgroup: "{{ $labels.site }}"
  90   - name: cpu
  91     rules:
  92       - alert: cpu pressure
  93         expr: rate(node_pressure_cpu_waiting_seconds_total[5m]) > 0.6
  94         for: 15m
  95         labels:
  96           alertgroup: "{{ $labels.instance }}"
  97         annotations:
  98           pressure: "{{ $value | humanizePercentage }}"
  99   - name: database
 100     rules:
 101       - alert: postgres replication delay
 102         expr: pg_replication_lag_seconds > 5
 103         for: 5m
 104         labels:
 105           alertgroup: database
 106         annotations:
 107           delay: "{{ $value | humanizeDuration }}"
 108   - name: dublin
 109     rules:
 110       - alert: pdu current draw
 111         expr: rPDU2PhaseStatusCurrent{site="dublin",rPDU2PhaseStatusIndex="1"} / 10 > 13
 112         for: 5m
 113         labels:
 114           alertgroup: "dublin"
 115         annotations:
 116           current: "{{ $value | humanize }}A"
 117       - alert: site current draw
 118         expr: sum(rPDU2PhaseStatusCurrent{site="dublin",rPDU2PhaseStatusIndex="1"} / 10) > 17
 119         for: 5m
 120         labels:
 121           alertgroup: "dublin"
 122         annotations:
 123           current: "{{ $value | humanize }}A"
 124       - alert: site temperature
 125         expr: min(rPDU2SensorTempHumidityStatusTempC{site="dublin"}) / 10 < 18 or min(rPDU2SensorTempHumidityStatusTempC{site="dublin"}) / 10 > 25
 126         for: 5m
 127         labels:
 128           alertgroup: "dublin"
 129         annotations:
 130           temperature: "{{ $value | humanize }}C"
 131       - alert: site humidity
 132         expr: max(rPDU2SensorTempHumidityStatusRelativeHumidity{site="dublin"}) / 100 < 0.25 or max(rPDU2SensorTempHumidityStatusRelativeHumidity{site="dublin"}) / 100 > 0.65
 133         for: 5m
 134         labels:
 135           alertgroup: "dublin"
 136         annotations:
 137           humidity: "{{ $value | humanizePercentage }}"
 138   - name: fastly
 139     rules:
 140       - alert: fastly error rate
 141         expr: sum(rate(fastly_rt_status_group_total{status_group="5xx"}[5m])) by (service_name, datacenter) / sum(rate(fastly_rt_status_group_total[5m])) by (service_name, datacenter) > 0.005
 142         for: 15m
 143         labels:
 144           alertgroup: fastly
 145         annotations:
 146           error_rate: "{{ $value | humanizePercentage }}"
 147       - alert: fastly healthcheck failing
 148         expr: count(fastly_healthcheck_status == 0) by (service) > 0
 149         for: 15m
 150         labels:
 151           alertgroup: fastly
 152       - alert: multiple fastly healthchecks failing
 153         expr: count(fastly_healthcheck_status == 0) by (service) > 4
 154         for: 5m
 155         labels:
 156           alertgroup: fastly
 157   - name: filesystem
 158     rules:
 159       - alert: readonly filesystem
 160         expr: node_filesystem_readonly == 1
 161         for: 0m
 162         labels:
 163           alertgroup: "{{ $labels.instance }}"
 164       - alert: filesystem low on space
 165         expr: node_filesystem_avail_bytes / node_filesystem_size_bytes < 0.05
 166         for: 5m
 167         labels:
 168           alertgroup: "{{ $labels.instance }}"
 169         annotations:
 170           percentage_free: "{{ $value | humanizePercentage }}"
 171           free_bytes: "{{ with printf \"node_filesystem_avail_bytes{instance='%s',mountpoint='%s'}\" $labels.instance $labels.mountpoint | query }}{{ . | first | value | humanize1024 }}bytes{{end}}"
 172           total_total: "{{ with printf \"node_filesystem_size_bytes{instance='%s',mountpoint='%s'}\" $labels.instance $labels.mountpoint | query }}{{ . | first | value | humanize1024 }}bytes{{end}}"
 173       - alert: filesystem low on inodes
 174         expr: node_filesystem_files_free / node_filesystem_files < 0.1
 175         for: 5m
 176         labels:
 177           alertgroup: "{{ $labels.instance }}"
 178         annotations:
 179           percentage_free: "{{ $value | humanizePercentage }}"
 180           free_inodes: "{{ with printf \"node_filesystem_files_free{instance='%s',mountpoint='%s'}\" $labels.instance $labels.mountpoint | query }}{{ . | first | value }}{{end}}"
 181           total_inodes: "{{ with printf \"node_filesystem_files{instance='%s',mountpoint='%s'}\" $labels.instance $labels.mountpoint | query }}{{ . | first | value }}{{end}}"
 182   - name: hwmon
 183     rules:
 184       - alert: hwmon fan alarm
 185         expr: node_hwmon_fan_alarm == 1
 186         for: 5m
 187         labels:
 188           alertgroup: "{{ $labels.instance }}"
 189         annotations:
 190           fan_rpm: "{{ with printf \"node_hwmon_fan_rpm{instance='%s',chip='%s',sensor='%s'}\" $labels.instance $labels.chip $labels.sensor | query }}{{ . | first | value | humanize }}rpm{{end}}"
 191           fan_min_rpm: "{{ with printf \"node_hwmon_fan_min_rpm{instance='%s',chip='%s',sensor='%s'}\" $labels.instance $labels.chip $labels.sensor | query }}{{ . | first | value | humanize }}rpm{{end}}"
 192       - alert: hwmon temperature alarm
 193         expr: node_hwmon_temp_alarm == 1
 194         for: 5m
 195         labels:
 196           alertgroup: "{{ $labels.instance }}"
 197         annotations:
 198           temp_celsius: "{{ with printf \"node_hwmon_temp_celsius{instance='%s',chip='%s',sensor='%s'}\" $labels.instance $labels.chip $labels.sensor | query }}{{ . | first | value | humanize }}C{{end}}"
 199           temp_max_celsius: "{{ with printf \"node_hwmon_temp_max_celsius{instance='%s',chip='%s',sensor='%s'}\" $labels.instance $labels.chip $labels.sensor | query }}{{ . | first | value | humanize }}C{{end}}"
 200           temp_crit_celsius: "{{ with printf \"node_hwmon_temp_crit_celsius{instance='%s',chip='%s',sensor='%s'}\" $labels.instance $labels.chip $labels.sensor | query }}{{ . | first | value | humanize }}C{{end}}"
 201       - alert: hwmon voltage alarm
 202         expr: node_hwmon_in_alarm == 1
 203         for: 5m
 204         labels:
 205           alertgroup: "{{ $labels.instance }}"
 206         annotations:
 207           in_volts: "{{ with printf \"node_hwmon_in_volts{instance='%s',chip='%s',sensor='%s'}\" $labels.instance $labels.chip $labels.sensor | query }}{{ . | first | value | humanize }}V{{end}}"
 208           in_min_volts: "{{ with printf \"node_hwmon_in_min_volts{instance='%s',chip='%s',sensor='%s'}\" $labels.instance $labels.chip $labels.sensor | query }}{{ . | first | value | humanize }}V{{end}}"
 209           in_max_volts: "{{ with printf \"node_hwmon_in_max_volts{instance='%s',chip='%s',sensor='%s'}\" $labels.instance $labels.chip $labels.sensor | query }}{{ . | first | value | humanize }}V{{end}}"
 210   - name: io
 211     rules:
 212       - alert: io pressure
 213         expr: rate(node_pressure_io_waiting_seconds_total[5m]) > 0.6
 214         for: 60m
 215         labels:
 216           alertgroup: "{{ $labels.instance }}"
 217         annotations:
 218           pressure: "{{ $value | humanizePercentage }}"
 219   - name: ipmi
 220     rules:
 221       - alert: ipmi fan alarm
 222         expr: ipmi_fan_speed_state > 0
 223         for: 5m
 224         labels:
 225           alertgroup: "{{ $labels.instance }}"
 226         annotations:
 227           fan_speed_rpm: "{{ with printf \"ipmi_fan_speed_rpm{instance='%s',id='%s'}\" $labels.instance $labels.id | query }}{{ . | first | value | humanize }}rpm{{end}}"
 228       - alert: ipmi temperature alarm
 229         expr: ipmi_temperature_state > 0
 230         for: 5m
 231         labels:
 232           alertgroup: "{{ $labels.instance }}"
 233         annotations:
 234           temperature_celsius: "{{ with printf \"ipmi_temperature_celsius{instance='%s',id='%s'}\" $labels.instance $labels.id | query }}{{ . | first | value | humanize }}C{{end}}"
 235       - alert: ipmi voltage alarm
 236         expr: ipmi_voltage_state > 0
 237         for: 5m
 238         labels:
 239           alertgroup: "{{ $labels.instance }}"
 240         annotations:
 241           voltage_volts: "{{ with printf \"ipmi_voltage_volts{instance='%s',id='%s'}\" $labels.instance $labels.id | query }}{{ . | first | value | humanize }}V{{end}}"
 242       - alert: ipmi power alarm
 243         expr: ipmi_power_state > 0 or ipmi_sensor_state{type=~"Power .*"} > 0
 244         for: 5m
 245         labels:
 246           alertgroup: "{{ $labels.instance }}"
 247   - name: juniper
 248     rules:
 249       - alert: juniper fan alarm
 250         expr: sum_over_time(jnxOperatingState{jnxOperatingContentsIndex="4",jnxOperatingState!~"running.*"}[6m]) > 0
 251         for: 5m
 252         labels:
 253           alertgroup: "{{ $labels.site }}"
 254       - alert: juniper power alarm
 255         expr: sum_over_time(jnxOperatingState{jnxOperatingContentsIndex="2",jnxOperatingState!~"running.*"}[6m]) > 0
 256         for: 5m
 257         labels:
 258           alertgroup: "{{ $labels.site }}"
 259   - name: mail
 260     rules:
 261       - alert: exim queue length
 262         expr: exim_queue > exim_queue_limit
 263         for: 60m
 264         labels:
 265           alertgroup: mail
 266         annotations:
 267           queue_length: "{{ $value }}"
 268       - alert: mailman queue length
 269         expr: mailman_queue_length > 200
 270         for: 60m
 271         labels:
 272           alertgroup: mail
 273         annotations:
 274           queue_length: "{{ $value }}"
 275   - name: mdadm
 276     rules:
 277       - alert: mdadm array inactive
 278         expr: node_md_state{state="inactive"} > 0
 279         for: 0m
 280         labels:
 281           alertgroup: "{{ $labels.instance }}"
 282         annotations:
 283           required: "{{ with printf \"node_md_disks_required{instance='%s',device='%s'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 284           active: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='active'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 285           failed: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='failed'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 286           spare: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='spare'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 287       - alert: mdadm array degraded
 288         expr: sum (node_md_disks{state="active"}) without (state) < node_md_disks_required
 289         for: 0m
 290         labels:
 291           alertgroup: "{{ $labels.instance }}"
 292         annotations:
 293           required: "{{ with printf \"node_md_disks_required{instance='%s',device='%s'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 294           active: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='active'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 295           failed: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='failed'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 296           spare: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='spare'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 297       - alert: mdadm disk failed
 298         expr: node_md_disks{state="failed"} > 0
 299         for: 0m
 300         labels:
 301           alertgroup: "{{ $labels.instance }}"
 302         annotations:
 303           required: "{{ with printf \"node_md_disks_required{instance='%s',device='%s'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 304           active: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='active'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 305           failed: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='failed'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 306           spare: "{{ with printf \"node_md_disks{instance='%s',device='%s',state='spare'}\" $labels.instance $labels.device | query }}{{ . | first | value | humanize }} disks{{end}}"
 307   - name: memory
 308     rules:
 309       - alert: low memory
 310         expr: node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes < 0.1
 311         for: 15m
 312         labels:
 313           alertgroup: "{{ $labels.instance }}"
 314         annotations:
 315           memory_free: "{{ $value | humanizePercentage }}"
 316       - alert: memory pressure
 317         expr: rate(node_pressure_memory_waiting_seconds_total[5m]) > 0.6
 318         for: 60m
 319         labels:
 320           alertgroup: "{{ $labels.instance }}"
 321         annotations:
 322           pressure: "{{ $value | humanizePercentage }}"
 323       - alert: oom kill detected
 324         expr: increase(node_vmstat_oom_kill[1m]) > 0
 325         for: 0m
 326         labels:
 327           alertgroup: "{{ $labels.instance }}"
 328         annotations:
 329           new_oom_kills: "{{ $value }}"
 330   - name: network
 331     rules:
 332       - alert: interface transmit rate
 333         expr: rate(node_network_transmit_bytes_total[1m]) / node_network_speed_bytes > 0.98
 334         for: 5m
 335         labels:
 336           alertgroup: "{{ $labels.instance }}"
 337         annotations:
 338           bandwidth_used: "{{ $value | humanizePercentage }}"
 339       - alert: interface receive rate
 340         expr: rate(node_network_receive_bytes_total[1m]) / node_network_speed_bytes > 0.98
 341         for: 5m
 342         labels:
 343           alertgroup: "{{ $labels.instance }}"
 344         annotations:
 345           bandwidth_used: "{{ $value | humanizePercentage }}"
 346       - alert: interface transmit errors
 347         expr: rate(node_network_transmit_errs_total{device!~"wg.*"}[1m]) / rate(node_network_transmit_packets_total{device!~"wg.*"}[1m]) > 0.01
 348         for: 5m
 349         labels:
 350           alertgroup: "{{ $labels.instance }}"
 351         annotations:
 352           error_rate: "{{ $value | humanizePercentage }}"
 353       - alert: wireguard interface transmit errors
 354         expr: rate(node_network_transmit_errs_total{device=~"wg.*"}[1m]) / rate(node_network_transmit_packets_total{device=~"wg.*"}[1m]) > 0.05
 355         for: 1h
 356         labels:
 357           alertgroup: "{{ $labels.instance }}"
 358         annotations:
 359           error_rate: "{{ $value | humanizePercentage }}"
 360       - alert: interface receive errors
 361         expr: rate(node_network_receive_errs_total[1m]) / rate(node_network_receive_packets_total[1m]) > 0.01
 362         for: 5m
 363         labels:
 364           alertgroup: "{{ $labels.instance }}"
 365         annotations:
 366           error_rate: "{{ $value | humanizePercentage }}"
 367       - alert: conntrack entries
 368         expr: node_nf_conntrack_entries / node_nf_conntrack_entries_limit > 0.8
 369         for: 5m
 370         labels:
 371           alertgroup: "{{ $labels.instance }}"
 372         annotations:
 373           entries_used: "{{ $value | humanizePercentage }}"
 374   - name: nominatim
 375     rules:
 376       - alert: nominatim replication delay
 377         expr: nominatim_replication_delay > 10800
 378         for: 1h
 379         labels:
 380           alertgroup: nominatim
 381         annotations:
 382           delay: "{{ $value | humanizeDuration }}"
 383   - name: overpass
 384     rules:
 385       - alert: overpass osm database age
 386         expr: overpass_database_age_seconds{database="osm"} > 3600
 387         for: 1h
 388         labels:
 389           alertgroup: overpass
 390         annotations:
 391           age: "{{ $value | humanizeDuration }}"
 392       - alert: overpass area database age
 393         expr: overpass_database_age_seconds{database="area"} > 86400
 394         for: 1h
 395         labels:
 396           alertgroup: overpass
 397         annotations:
 398           age: "{{ $value | humanizeDuration }}"
 399   - name: planet
 400     rules:
 401       - alert: planet dump overdue
 402         expr: time() - file_stat_modif_time_seconds{path=~"/store/planet/(pbf|planet)/.*"} > 7 * 86400 and ignoring (job, name, path) chef_role{name="planetdump"} == 1
 403         for: 24h
 404         labels:
 405           alertgroup: planet
 406         annotations:
 407           overdue_by: "{{ $value | humanizeDuration }}"
 408       - alert: notes dump overdue
 409         expr: time() - file_stat_modif_time_seconds{path=~"/store/planet/notes/.*"} > 86400 and ignoring (job, name, path) chef_role{name="planetdump"} == 1
 410         for: 6h
 411         labels:
 412           alertgroup: planet
 413         annotations:
 414           overdue_by: "{{ $value | humanizeDuration }}"
 415       - alert: daily replication feed delayed
 416         expr: time() - file_stat_modif_time_seconds{path=~"/store/planet/replication/day/.*"} > 86400 and ignoring (job, name, path) chef_role{name="planetdump"} == 1
 417         for: 3h
 418         labels:
 419           alertgroup: planet
 420         annotations:
 421           delayed_by: "{{ $value | humanizeDuration }}"
 422       - alert: hourly replication feed delayed
 423         expr: time() - file_stat_modif_time_seconds{path=~"/store/planet/replication/hour/.*"} > 3600 and ignoring (job, name, path) chef_role{name="planetdump"} == 1
 424         for: 30m
 425         labels:
 426           alertgroup: planet
 427         annotations:
 428           delayed_by: "{{ $value | humanizeDuration }}"
 429       - alert: minutely replication feed delayed
 430         expr: time() - file_stat_modif_time_seconds{path=~"/store/planet/replication/minute/.*"} > 60 and ignoring (job, name, path) chef_role{name="planetdump"} == 1
 431         for: 5m
 432         labels:
 433           alertgroup: planet
 434         annotations:
 435           delayed_by: "{{ $value | humanizeDuration }}"
 436       - alert: changeset replication feed delayed
 437         expr: time() - file_stat_modif_time_seconds{path=~"/store/planet/replication/changesets/.*"} > 60 and ignoring (job, name, path) chef_role{name="planetdump"} == 1
 438         for: 5m
 439         labels:
 440           alertgroup: planet
 441         annotations:
 442           delayed_by: "{{ $value | humanizeDuration }}"
 443   - name: postgresql
 444     rules:
 445       - alert: postgresql down
 446         expr: pg_up == 0
 447         for: 1m
 448         labels:
 449           alertgroup: "{{ $labels.instance }}"
 450       - alert: postgresql replication delay
 451         expr: pg_replication_lag_seconds > 5
 452         for: 1m
 453         labels:
 454           alertgroup: "{{ $labels.instance }}"
 455         annotations:
 456           delay: "{{ $value | humanizeDuration }}"
 457       - alert: postgresql connection limit
 458         expr: sum (pg_stat_activity_count) by (instance, server) / sum (pg_settings_max_connections) by (instance, server) > 0.8
 459         for: 1m
 460         labels:
 461           alertgroup: "{{ $labels.instance }}"
 462         annotations:
 463           connections_used: "{{ $value | humanizePercentage }}"
 464       - alert: postgresql deadlocks
 465         expr: increase(pg_stat_database_deadlocks{datname!="nominatim"}[1m]) > 5
 466         for: 0m
 467         labels:
 468           alertgroup: "{{ $labels.instance }}"
 469         annotations:
 470           new_deadlocks: "{{ $value }}"
 471       - alert: postgresql slow queries
 472         expr: pg_slow_queries > 0
 473         for: 5m
 474         labels:
 475           alertgroup: "{{ $labels.instance }}"
 476         annotations:
 477           queries: "{{ $value }}"
 478   - name: prometheus
 479     rules:
 480       - alert: prometheus configuration error
 481         expr: prometheus_config_last_reload_successful == 0
 482         for: 10m
 483         labels:
 484           alertgroup: "prometheus"
 485       - alert: prometheus target missing
 486         expr: up == 0
 487         for: 10m
 488         labels:
 489           alertgroup: "prometheus"
 490   - name: raid
 491     rules:
 492       - alert: raid array degraded
 493         expr: ohai_array_info{status="degraded"} > 0
 494         for: 5m
 495         labels:
 496           alertgroup: "{{ $labels.instance }}"
 497       - alert: raid disk failed
 498         expr: ohai_disk_info{status="failed"} > 0
 499         for: 5m
 500         labels:
 501           alertgroup: "{{ $labels.instance }}"
 502   - name: rasdaemon
 503     rules:
 504       - alert: memory controller errors
 505         expr: increase(rasdaemon_mc_events_total[1m]) > 0
 506         for: 0m
 507         labels:
 508           alertgroup: "{{ $labels.instance }}"
 509         annotations:
 510           new_errors: "{{ $value }}"
 511       - alert: pcie aer errors
 512         expr: increase(rasdaemon_aer_events_total[1m]) > 0
 513         for: 0m
 514         labels:
 515           alertgroup: "{{ $labels.instance }}"
 516         annotations:
 517           new_ercrors: "{{ $value }}"
 518   - name: smart
 519     rules:
 520       - alert: smart failure
 521         expr: smart_health_status == 0
 522         for: 60m
 523         labels:
 524           alertgroup: "{{ $labels.instance }}"
 525       - alert: smart ssd wearout approaching
 526         expr: smart_percentage_used >= 80
 527         for: 60m
 528         labels:
 529           alertgroup: "{{ $labels.instance }}"
 530         annotations:
 531           percentage_used: "{{ $value | humanizePercentage }}"
 532   - name: ssl
 533     rules:
 534       - alert: ssl certificate probe failed
 535         expr: ssl_probe_success == 0
 536         for: 60m
 537         labels:
 538           alertgroup: ssl
 539       - alert: ssl certificate expiry
 540         expr: ssl_verified_cert_not_after{chain_no="0"} - time() < 86400 * 14
 541         for: 0m
 542         labels:
 543           alertgroup: ssl
 544         annotations:
 545           expires_in: "{{ $value | humanizeDuration }}"
 546       - alert: ssl certificate revoked
 547         expr: ssl_ocsp_response_status == 1
 548         for: 0m
 549         labels:
 550           alertgroup: ssl
 551       - alert: ocsp status unknown
 552         expr: ssl_ocsp_response_status == 1
 553         for: 0m
 554         labels:
 555           alertgroup: ssl
 556   - name: statuscake
 557     rules:
 558       - alert: statuscake uptime check failing
 559         expr: statuscake_uptime{status="down",paused="false"} > 0
 560         for: 10m
 561         labels:
 562           alertgroup: statuscake
 563   - name: systemd
 564     rules:
 565       - alert: systemd failed service
 566         expr: node_systemd_unit_state{state="failed",name!="chef-client.service"} == 1
 567         for: 5m
 568         labels:
 569           alertgroup: "{{ $labels.instance }}"
 570       - alert: systemd failed chef client service
 571         expr: node_systemd_unit_state{state="failed",name="chef-client.service"} == 1
 572         for: 6h
 573         labels:
 574           alertgroup: "{{ $labels.instance }}"
 575   - name: tile
 576     rules:
 577       - alert: renderd replication delay
 578         expr: renderd_replication_delay > 120
 579         for: 15m
 580         labels:
 581           alertgroup: tile
 582         annotations:
 583           delay: "{{ $value | humanizeDuration }}"
 584       - alert: missed tile rate
 585         expr: sum(rate(modtile_http_response_total{code="404"}[5m])) by (instance) / sum(rate(modtile_http_response_total[5m])) by (instance) > 0.05
 586         for: 5m
 587         labels:
 588           alertgroup: tile
 589         annotations:
 590           miss_rate: "{{ $value | humanizePercentage }}"
 591   - name: time
 592     rules:
 593       - alert: clock not synchronising
 594         expr: min_over_time(node_timex_sync_status[1m]) == 0 and node_timex_maxerror_seconds >= 16
 595         for: 5m
 596         labels:
 597           alertgroup: "{{ $labels.instance }}"
 598       - alert: clock skew detected
 599         expr: (node_timex_offset_seconds > 0.05 and deriv(node_timex_offset_seconds[5m]) >= 0) or (node_timex_offset_seconds < -0.05 and deriv(node_timex_offset_seconds[5m]) <= 0)
 600         for: 5m
 601         labels:
 602           alertgroup: "{{ $labels.instance }}"
 603         annotations:
 604           skew: "{{ with printf \"node_timex_offset_seconds{instance='%s'}\" $labels.instance | query }} {{ . | humanizeDuration }}{{ end }}"
 605   - name: web
 606     rules:
 607       - alert: web error rate
 608         expr: sum(rate(api_call_count_total{status=~"50[0-8]|5[1-9][0-9]"}[5m])) by (instance) / sum(rate(api_call_count_total[5m])) by (instance) > 0.002
 609         for: 5m
 610         labels:
 611           alertgroup: web
 612         annotations:
 613           error_rate: "{{ $value | humanizePercentage }}"
 614       - alert: job processing rate
 615         expr: rate(pg_stat_user_tables_n_tup_del{datname="openstreetmap",relname="delayed_jobs"}[5m]) / rate(pg_stat_user_tables_n_tup_ins{datname="openstreetmap",relname="delayed_jobs"}[5m]) < 0.9 and ignoring(job, name, datname, relname, schemaname, server) chef_role{name="db-master"} == 1
 616         for: 15m
 617         labels:
 618           alertgroup: web
 619         annotations:
 620           job_processing_rate: "{{ $value | humanizePercentage }}"