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Make Prometheus Alert Rules Work Better and Organize Them Better #19

Merged
june merged 5 commits from adjust_prometheus_alert_rules into main 2025-02-07 13:57:48 +01:00
Conversation 0 Commits 5 Files changed 1 +184 -147
1 changed files with 184 additions and 147 deletions

331
resources/chaosknoten/grafana/docker_compose/prometheus_alerts.rules.yaml
View file

@ -1,7 +1,7 @@
# Links & Resources:
# - https://samber.github.io/awesome-prometheus-alerts/rules
groups:
- name: node-exporter
- name: node-exporter-memory
rules:
- alert: HostOutOfMemory
expr: (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes * 100 < 10) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
@ -28,6 +28,41 @@ groups:
annotations:
summary: Host Memory is underutilized (instance {{ $labels.instance }})
description: "Node memory is < 10% for 1 week. Consider reducing memory space. (instance {{ $labels.instance }})\n VALUE = {{ $value }}"
- alert: HostSwapIsFillingUp
expr: ((1 - (node_memory_SwapFree_bytes / node_memory_SwapTotal_bytes)) * 100 > 80) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
labels:
severity: warning
annotations:
summary: Host swap is filling up (instance {{ $labels.instance }})
description: "Swap is filling up (>80%)\n VALUE = {{ $value }}"
- alert: HostOomKillDetected
expr: (increase(node_vmstat_oom_kill[1m]) > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: warning
annotations:
summary: Host OOM kill detected (instance {{ $labels.instance }})
description: "OOM kill detected\n VALUE = {{ $value }}"
- alert: HostEdacCorrectableErrorsDetected
expr: (increase(node_edac_correctable_errors_total[1m]) > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: info
annotations:
summary: Host EDAC Correctable Errors detected (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} has had {{ printf \"%.0f\" $value }} correctable memory errors reported by EDAC in the last 5 minutes.\n VALUE = {{ $value }}"
- alert: HostEdacUncorrectableErrorsDetected
expr: (node_edac_uncorrectable_errors_total > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: warning
annotations:
summary: Host EDAC Uncorrectable Errors detected (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} has had {{ printf \"%.0f\" $value }} uncorrectable memory errors reported by EDAC in the last 5 minutes.\n VALUE = {{ $value }}"
- name: node-exporter-network
rules:
- alert: HostUnusualNetworkThroughputIn
expr: (sum by (instance) (rate(node_network_receive_bytes_total[2m])) / 1024 / 1024 > 100) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 5m
@ -44,56 +79,107 @@ groups:
annotations:
summary: Host unusual network throughput out (instance {{ $labels.instance }})
description: "Host network interfaces are probably sending too much data (> 100 MB/s)\n VALUE = {{ $value }}"
# Have different disk read and write rate alerts for VMs and physical machines.
- alert: VirtualHostUnusualDiskReadRate
expr: (sum by (instance) (rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{ype="virtual_machine", nodename=~".+", nodename!="forgejo-actions-runner", nodename!="woodpecker"}
for: 5m
labels:
severity: warning
annotations:
summary: Virtual host unusual disk read rate (instance {{ $labels.instance }})
description: "Disk is probably reading too much data (> 50 MB/s)\n VALUE = {{ $value }}"
- alert: VirtualHostUnusualDiskWriteRate
expr: (sum by (instance) (rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{type="virtual_machine", nodename=~".+", nodename!="forgejo-actions-runner", nodename!="woodpecker"}
# General network receive error alerts.
# Excluding: OPNsense hosts
- alert: HostNetworkReceiveErrors
expr: (rate(node_network_receive_errs_total[2m]) / rate(node_network_receive_packets_total[2m]) > 0.01) * on(instance) group_left (nodename) node_uname_info{nodename=~".+", nodename!="OPNsense"}
for: 2m
labels:
severity: warning
annotations:
summary: Virtual host unusual disk write rate (instance {{ $labels.instance }})
summary: Host Network Receive Errors (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} interface {{ $labels.device }} has encountered {{ printf \"%.0f\" $value }} receive errors in the last two minutes.\n VALUE = {{ $value }}"
# OPNsense network receive error alerts.
# This is the same as the regular network receive error alerts, but excluding the WireGuard interfaces as they like to throw errors, but which aren't of importance.
- alert: OPNsenseHostNetworkReceiveErrors
expr: (rate(node_network_receive_errs_total{device!~"wg.+"}[2m]) / rate(node_network_receive_packets_total{device!~"wg.+"}[2m]) > 0.01) * on(instance) group_left (nodename) node_uname_info{nodename="OPNsense"}
for: 2m
labels:
severity: warning
annotations:
summary: OPNsense host Network Receive Errors (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} interface {{ $labels.device }} has encountered {{ printf \"%.0f\" $value }} receive errors in the last two minutes.\n VALUE = {{ $value }}"
- alert: HostNetworkTransmitErrors
expr: (rate(node_network_transmit_errs_total[2m]) / rate(node_network_transmit_packets_total[2m]) > 0.01) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
labels:
severity: warning
annotations:
summary: Host Network Transmit Errors (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} interface {{ $labels.device }} has encountered {{ printf \"%.0f\" $value }} transmit errors in the last two minutes.\n VALUE = {{ $value }}"
- alert: HostNetworkBondDegraded
expr: ((node_bonding_active - node_bonding_slaves) != 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
labels:
severity: warning
annotations:
summary: Host Network Bond Degraded (instance {{ $labels.instance }})
description: "Bond \"{{ $labels.device }}\" degraded on \"{{ $labels.instance }}\".\n VALUE = {{ $value }}"
- alert: HostConntrackLimit
expr: (node_nf_conntrack_entries / node_nf_conntrack_entries_limit > 0.8) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 5m
labels:
severity: warning
annotations:
summary: Host conntrack limit (instance {{ $labels.instance }})
description: "The number of conntrack is approaching limit\n VALUE = {{ $value }}"
- name: node-exporter-disk
rules:
# General high disk read and write rate alerts.
# Excluding: hypervisor hosts, CI hosts
- alert: HostUnusualDiskReadRate
expr: (sum by (instance) (rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{nodename=~".+", nodename!="forgejo-actions-runner", nodename!="woodpecker", nodename!="chaosknoten"}
for: 5m
labels:
severity: warning
annotations:
summary: Host unusual disk read rate (instance {{ $labels.instance }})
description: "Disk is probably reading too much data (> 50 MB/s)\n VALUE = {{ $value }}"
- alert: HostUnusualDiskWriteRate
expr: (sum by (instance) (rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{nodename=~".+", nodename!="forgejo-actions-runner", nodename!="woodpecker", nodename!="chaosknoten"}
for: 2m
labels:
severity: warning
annotations:
summary: Host unusual disk write rate (instance {{ $labels.instance }})
description: "Disk is probably writing too much data (> 50 MB/s)\n VALUE = {{ $value }}"
# Some VMs are expected to have high Read / Write rates z.B. CI servers
- alert: VirtualHostUnusualDiskReadRate
expr: (sum by (instance) (rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{ype="virtual_machine", nodename="forgejo-actions-runner", nodename="woodpecker"}
# CI hosts high disk read and write alerts.
# Longer intervals to account for disk intensive CI tasks.
- alert: CIHostUnusualDiskReadRate
expr: (sum by (instance) (rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{nodename="forgejo-actions-runner", nodename="woodpecker"}
for: 10m
labels:
severity: warning
annotations:
summary: Virtual host unusual disk read rate for 10 min (instance {{ $labels.instance }})
summary: CI host unusual disk read rate for 10 min (instance {{ $labels.instance }})
description: "Disk is probably reading too much data (> 50 MB/s)\n VALUE = {{ $value }}"
- alert: VirtualHostUnusualDiskWriteRate
expr: (sum by (instance) (rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{type="virtual_machine", nodename="forgejo-actions-runner", nodename="woodpecker"}
expr: (sum by (instance) (rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{nodename="forgejo-actions-runner", nodename="woodpecker"}
for: 4m
labels:
severity: warning
annotations:
summary: Virtual host unusual disk write rate for 4 min (instance {{ $labels.instance }})
summary: CI host unusual disk write rate for 4 min (instance {{ $labels.instance }})
description: "Disk is probably writing too much data (> 50 MB/s)\n VALUE = {{ $value }}"
- alert: PhysicalHostUnusualDiskReadRate
expr: (sum by (instance) (rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 100) * on(instance) group_left (nodename) node_uname_info{type="physical_machine", nodename=~".+"}
for: 20m
# Hypervisor host high disk read and write alerts.
# Longer intervals to account for disk intensive hypervisor tasks (backups, moving VMs, etc.).
- alert: HypervisorHostUnusualDiskReadRate
expr: (sum by (instance) (rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{nodename="chaosknoten"}
for: 60m
labels:
severity: warning
annotations:
summary: Physical host unusual disk read rate (instance {{ $labels.instance }})
description: "Disk is probably reading too much data (> 100 MB/s)\n VALUE = {{ $value }}"
- alert: PhysicalHostUnusualDiskWriteRate
expr: (sum by (instance) (rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 100) * on(instance) group_left (nodename) node_uname_info{type="physical_machine", nodename=~".+"}
for: 15m
summary: Hypervisor host unusual disk read rate (instance {{ $labels.instance }})
description: "Disk is probably reading too much data (> 50 MB/s)\n VALUE = {{ $value }}"
- alert: HypervisorHostUnusualDiskWriteRate
expr: (sum by (instance) (rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 50) * on(instance) group_left (nodename) node_uname_info{nodename="chaosknoten"}
for: 60m
labels:
severity: warning
annotations:
summary: Physical host unusual disk write rate (instance {{ $labels.instance }})
description: "Disk is probably writing too much data (> 100 MB/s)\n VALUE = {{ $value }}"
summary: Hypervisor host unusual disk write rate (instance {{ $labels.instance }})
description: "Disk is probably writing too much data (> 50 MB/s)\n VALUE = {{ $value }}"
# Please add ignored mountpoints in node_exporter parameters like
# "--collector.filesystem.ignored-mount-points=^/(sys|proc|dev|run)($|/)".
# Same rule using "node_filesystem_free_bytes" will fire when disk fills for non-root users.
@ -156,6 +242,55 @@ groups:
annotations:
summary: Host unusual disk write latency (instance {{ $labels.instance }})
description: "Disk latency is growing (write operations > 100ms)\n VALUE = {{ $value }}"
# General unusual disk io alerts.
# Excluding: hypervisor hosts
- alert: HostUnusualDiskIo
expr: (rate(node_disk_io_time_seconds_total[1m]) > 0.5) * on(instance) group_left (nodename) node_uname_info{nodename=~".+", nodename!="chaosknoten"}
for: 5m
labels:
severity: warning
annotations:
summary: Host unusual disk IO (instance {{ $labels.instance }})
description: "Time spent in IO is too high on {{ $labels.instance }}. Check storage for issues.\n VALUE = {{ $value }}"
# Hypervisor host unusual hard disk io alerts.
# Since hard disks on the hypervisor can easily have their IO saturated by hypervisor tasks (backups, moving VMs, etc.), alert when the IO is above the regular threshold for a very long time.
- alert: HypervisorHostUnusualHardDiskIo
expr: (rate(node_disk_io_time_seconds_total{device=~"s.+"}[1m]) > 0.5) * on(instance) group_left (nodename) node_uname_info{nodename="chaosknoten"}
for: 50m
labels:
severity: warning
annotations:
summary: Hypervisor host unusual hard disk IO (instance {{ $labels.instance }})
description: "Time spent in IO is too high on {{ $labels.instance }}. Check storage for issues.\n VALUE = {{ $value }}"
# Hypervisor host unusual other (non-hard) disk io alerts.
# This is the same as the regular unsual disk io alerts.
- alert: HypervisorHostUnusualOtherDiskIo
expr: (rate(node_disk_io_time_seconds_total{device!~"s.+"}[1m]) > 0.5) * on(instance) group_left (nodename) node_uname_info{nodename="chaosknoten"}
for: 5m
labels:
severity: warning
annotations:
summary: Hypervisor host unusual other (non-hard) disk IO (instance {{ $labels.instance }})
description: "Time spent in IO is too high on {{ $labels.instance }}. Check storage for issues.\n VALUE = {{ $value }}"
- alert: HostRaidArrayGotInactive
expr: (node_md_state{state="inactive"} > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: critical
annotations:
summary: Host RAID array got inactive (instance {{ $labels.instance }})
description: "RAID array {{ $labels.device }} is in a degraded state due to one or more disk failures. The number of spare drives is insufficient to fix the issue automatically.\n VALUE = {{ $value }}"
- alert: HostRaidDiskFailure
expr: (node_md_disks{state="failed"} > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
labels:
severity: warning
annotations:
summary: Host RAID disk failure (instance {{ $labels.instance }})
description: "At least one device in RAID array on {{ $labels.instance }} failed. Array {{ $labels.md_device }} needs attention and possibly a disk swap\n VALUE = {{ $value }}"
- name: node-exporter-cpu
rules:
- alert: HostHighCpuLoad
expr: (sum by (instance) (avg by (mode, instance) (rate(node_cpu_seconds_total{mode!="idle"}[2m]))) > 0.8) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 10m
@ -190,31 +325,6 @@ groups:
annotations:
summary: Host CPU high iowait (instance {{ $labels.instance }})
description: "CPU iowait > 10%. A high iowait means that you are disk or network bound.\n VALUE = {{ $value }}"
# Have different disk IO alerts for VMs and physical machines and for physical machines different ones for hard and other disks.
- alert: PhysicalHostUnusualHardDiskIo
expr: (rate(node_disk_io_time_seconds_total{device=~"s.+"}[1m]) > 0.75) * on(instance) group_left (nodename) node_uname_info{type="physical_machine", nodename=~".+"}
for: 5m
labels:
severity: warning
annotations:
summary: Physical host unusual hard disk IO (instance {{ $labels.instance }})
description: "Time spent in IO is too high on {{ $labels.instance }}. Check storage for issues.\n VALUE = {{ $value }}"
- alert: PhysicalHostUnusualOtherDiskIo
expr: (rate(node_disk_io_time_seconds_total{device!~"s.+"}[1m]) > 0.5) * on(instance) group_left (nodename) node_uname_info{type="physical_machine", nodename=~".+"}
for: 5m
labels:
severity: warning
annotations:
summary: Physical host unusual other (non-hard) disk IO (instance {{ $labels.instance }})
description: "Time spent in IO is too high on {{ $labels.instance }}. Check storage for issues.\n VALUE = {{ $value }}"
- alert: VirtualHostUnusualDiskIo
expr: (rate(node_disk_io_time_seconds_total[1m]) > 0.5) * on(instance) group_left (nodename) node_uname_info{type="virtual_machine", nodename=~".+"}
for: 5m
labels:
severity: warning
annotations:
summary: Virtual host unusual disk IO (instance {{ $labels.instance }})
description: "Time spent in IO is too high on {{ $labels.instance }}. Check storage for issues.\n VALUE = {{ $value }}"
# # x2 context switches is an arbitrary number.
# # The alert threshold depends on the nature of the application.
# # Please read: https://github.com/samber/awesome-prometheus-alerts/issues/58
@ -226,14 +336,28 @@ groups:
# annotations:
# summary: Host context switching high (instance {{ $labels.instance }})
# description: "Context switching is growing on the node (twice the daily average during the last 15m)\n VALUE = {{ $value }}"
- alert: HostSwapIsFillingUp
expr: ((1 - (node_memory_SwapFree_bytes / node_memory_SwapTotal_bytes)) * 100 > 80) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
- name: node-exporter-physical
rules:
- alert: HostNodeOvertemperatureAlarm
expr: ((node_hwmon_temp_crit_alarm_celsius == 1) or (node_hwmon_temp_alarm == 1)) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: critical
annotations:
summary: Host node overtemperature alarm (instance {{ $labels.instance }})
description: "Physical node temperature alarm triggered\n VALUE = {{ $value }}"
- alert: HostKernelVersionDeviations
expr: (count(sum(label_replace(node_uname_info, "kernel", "$1", "release", "([0-9]+.[0-9]+.[0-9]+).*")) by (kernel)) > 1) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 6h
labels:
severity: warning
annotations:
summary: Host swap is filling up (instance {{ $labels.instance }})
description: "Swap is filling up (>80%)\n VALUE = {{ $value }}"
summary: Host kernel version deviations (instance {{ $labels.instance }})
description: "Different kernel versions are running\n VALUE = {{ $value }}"
- name: node-exporter-misc
rules:
- alert: HostSystemdServiceCrashed
expr: (node_systemd_unit_state{state="failed"} == 1) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
@ -250,94 +374,6 @@ groups:
annotations:
summary: Host physical component too hot (instance {{ $labels.instance }})
description: "Physical hardware component too hot\n VALUE = {{ $value }}"
- alert: HostNodeOvertemperatureAlarm
expr: ((node_hwmon_temp_crit_alarm_celsius == 1) or (node_hwmon_temp_alarm == 1)) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: critical
annotations:
summary: Host node overtemperature alarm (instance {{ $labels.instance }})
description: "Physical node temperature alarm triggered\n VALUE = {{ $value }}"
- alert: HostRaidArrayGotInactive
expr: (node_md_state{state="inactive"} > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: critical
annotations:
summary: Host RAID array got inactive (instance {{ $labels.instance }})
description: "RAID array {{ $labels.device }} is in a degraded state due to one or more disk failures. The number of spare drives is insufficient to fix the issue automatically.\n VALUE = {{ $value }}"
- alert: HostRaidDiskFailure
expr: (node_md_disks{state="failed"} > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
labels:
severity: warning
annotations:
summary: Host RAID disk failure (instance {{ $labels.instance }})
description: "At least one device in RAID array on {{ $labels.instance }} failed. Array {{ $labels.md_device }} needs attention and possibly a disk swap\n VALUE = {{ $value }}"
- alert: HostKernelVersionDeviations
expr: (count(sum(label_replace(node_uname_info, "kernel", "$1", "release", "([0-9]+.[0-9]+.[0-9]+).*")) by (kernel)) > 1) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 6h
labels:
severity: warning
annotations:
summary: Host kernel version deviations (instance {{ $labels.instance }})
description: "Different kernel versions are running\n VALUE = {{ $value }}"
- alert: HostOomKillDetected
expr: (increase(node_vmstat_oom_kill[1m]) > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: warning
annotations:
summary: Host OOM kill detected (instance {{ $labels.instance }})
description: "OOM kill detected\n VALUE = {{ $value }}"
- alert: HostEdacCorrectableErrorsDetected
expr: (increase(node_edac_correctable_errors_total[1m]) > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: info
annotations:
summary: Host EDAC Correctable Errors detected (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} has had {{ printf \"%.0f\" $value }} correctable memory errors reported by EDAC in the last 5 minutes.\n VALUE = {{ $value }}"
- alert: HostEdacUncorrectableErrorsDetected
expr: (node_edac_uncorrectable_errors_total > 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 0m
labels:
severity: warning
annotations:
summary: Host EDAC Uncorrectable Errors detected (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} has had {{ printf \"%.0f\" $value }} uncorrectable memory errors reported by EDAC in the last 5 minutes.\n VALUE = {{ $value }}"
- alert: HostNetworkReceiveErrors
expr: (rate(node_network_receive_errs_total[2m]) / rate(node_network_receive_packets_total[2m]) > 0.01) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
labels:
severity: warning
annotations:
summary: Host Network Receive Errors (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} interface {{ $labels.device }} has encountered {{ printf \"%.0f\" $value }} receive errors in the last two minutes.\n VALUE = {{ $value }}"
- alert: HostNetworkTransmitErrors
expr: (rate(node_network_transmit_errs_total[2m]) / rate(node_network_transmit_packets_total[2m]) > 0.01) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
labels:
severity: warning
annotations:
summary: Host Network Transmit Errors (instance {{ $labels.instance }})
description: "Host {{ $labels.instance }} interface {{ $labels.device }} has encountered {{ printf \"%.0f\" $value }} transmit errors in the last two minutes.\n VALUE = {{ $value }}"
- alert: HostNetworkBondDegraded
expr: ((node_bonding_active - node_bonding_slaves) != 0) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 2m
labels:
severity: warning
annotations:
summary: Host Network Bond Degraded (instance {{ $labels.instance }})
description: "Bond \"{{ $labels.device }}\" degraded on \"{{ $labels.instance }}\".\n VALUE = {{ $value }}"
- alert: HostConntrackLimit
expr: (node_nf_conntrack_entries / node_nf_conntrack_entries_limit > 0.8) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 5m
labels:
severity: warning
annotations:
summary: Host conntrack limit (instance {{ $labels.instance }})
description: "The number of conntrack is approaching limit\n VALUE = {{ $value }}"
- alert: HostClockSkew
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)) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}
for: 10m
@ -362,6 +398,7 @@ groups:
annotations:
summary: Host requires reboot (instance {{ $labels.instance }})
description: "{{ $labels.instance }} requires a reboot.\n VALUE = {{ $value }}"
- name: prometheus
rules:
- alert: PrometheusJobMissing