--- apiVersion: monitoring.coreos.com/v1 kind: Probe metadata: name: nodes-proxmox spec: scrapeTimeout: 30s targets: staticConfig: static: - nas.mgmt.k-space.ee:9100 - pve1.proxmox.infra.k-space.ee:9100 - pve2.proxmox.infra.k-space.ee:9100 - pve8.proxmox.infra.k-space.ee:9100 - pve9.proxmox.infra.k-space.ee:9100 relabelingConfigs: - sourceLabels: [__param_target] targetLabel: instance - sourceLabels: [__param_target] targetLabel: __address__ prober: url: localhost path: /metrics metricRelabelings: - sourceLabels: [__address__] targetLabel: target --- apiVersion: monitoring.coreos.com/v1 kind: PrometheusRule metadata: name: node-exporter spec: groups: - name: node-exporter rules: - alert: ZfsOfflinePool expr: node_zfs_zpool_state{state!="online"} > 0 for: 1m labels: severity: critical annotations: summary: ZFS offline pool (instance {{ $labels.instance }}) description: "A ZFS zpool is in a unexpected state: {{ $labels.state }}.\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - alert: HostHighLoad expr: sum(node_load1{}) by (instance) / count(node_cpu_seconds_total{mode="user"}) by (instance) > 2.5 for: 15m labels: severity: warning annotations: summary: Host under high load description: Many processes are queued up for execution - alert: HostOutOfMemory expr: (node_memory_Cached_bytes + node_memory_Buffers_bytes + node_memory_MemFree_bytes ) / node_memory_MemTotal_bytes * 100 < 20 for: 2m labels: severity: warning annotations: summary: Host out of memory (instance {{ $labels.instance }}) description: Node memory is filling up (< 10% left) - alert: HostMemoryUnderMemoryPressure expr: rate(node_vmstat_pgmajfault[1m]) > 1000 for: 2m labels: severity: warning annotations: summary: Host memory under memory pressure (instance {{ $labels.instance }}) description: The node is under heavy memory pressure. High rate of major page faults - alert: HostUnusualNetworkThroughputIn expr: sum by (instance) (rate(node_network_receive_bytes_total[2m])) > 800e+06 for: 1h labels: severity: warning annotations: summary: Host unusual network throughput in (instance {{ $labels.instance }}) description: Host network interfaces are probably receiving too much data (> 800 MB/s) - alert: HostUnusualNetworkThroughputOut expr: sum by (instance) (rate(node_network_transmit_bytes_total[2m])) > 800e+06 for: 1h labels: severity: warning annotations: summary: Host unusual network throughput out (instance {{ $labels.instance }}) description: Host network interfaces are probably sending too much data (> 800 MB/s) - alert: HostUnusualDiskReadRate expr: sum by (instance) (rate(node_disk_read_bytes_total[2m])) > 500e+06 for: 1h labels: severity: warning annotations: summary: Host unusual disk read rate (instance {{ $labels.instance }}) description: Disk is probably reading too much data (> 500 MB/s) - alert: HostUnusualDiskWriteRate expr: sum by (instance) (rate(node_disk_written_bytes_total[2m])) > 500e+06 for: 1h labels: severity: warning annotations: summary: Host unusual disk write rate (instance {{ $labels.instance }}) description: Disk is probably writing too much data (> 500 MB/s) # Please add ignored mountpoints in node_exporter parameters like # "--collector.filesystem.ignored-mount-points=^/(sys|proc|dev|run)($|/)". # Same rule using "node_filesystem_free_bytes" will fire when disk fills for non-root users. - alert: HostOutOfDiskSpace expr: (node_filesystem_avail_bytes * 100) / node_filesystem_size_bytes < 10 and ON (instance, device, mountpoint) node_filesystem_readonly == 0 for: 2m labels: severity: warning annotations: summary: Host out of disk space (instance {{ $labels.instance }}) description: Disk is almost full (< 10% left) # Please add ignored mountpoints in node_exporter parameters like # "--collector.filesystem.ignored-mount-points=^/(sys|proc|dev|run)($|/)". # Same rule using "node_filesystem_free_bytes" will fire when disk fills for non-root users. - alert: HostDiskWillFillIn24Hours expr: (node_filesystem_avail_bytes * 100) / node_filesystem_size_bytes < 10 and ON (instance, device, mountpoint) predict_linear(node_filesystem_avail_bytes{fstype!~"tmpfs"}[1h], 24 * 3600) < 0 and ON (instance, device, mountpoint) node_filesystem_readonly == 0 for: 2m labels: severity: warning annotations: summary: Host disk will fill in 24 hours (instance {{ $labels.instance }}) description: Filesystem is predicted to run out of space within the next 24 hours at current write rate - alert: HostOutOfInodes expr: node_filesystem_files_free{mountpoint ="/rootfs"} / node_filesystem_files{mountpoint="/rootfs"} * 100 < 10 and ON (instance, device, mountpoint) node_filesystem_readonly{mountpoint="/rootfs"} == 0 for: 2m labels: severity: warning annotations: summary: Host out of inodes (instance {{ $labels.instance }}) description: Disk is almost running out of available inodes (< 10% left) - alert: HostInodesWillFillIn24Hours expr: node_filesystem_files_free{mountpoint ="/rootfs"} / node_filesystem_files{mountpoint="/rootfs"} * 100 < 10 and predict_linear(node_filesystem_files_free{mountpoint="/rootfs"}[1h], 24 * 3600) < 0 and ON (instance, device, mountpoint) node_filesystem_readonly{mountpoint="/rootfs"} == 0 for: 2m labels: severity: warning annotations: summary: Host inodes will fill in 24 hours (instance {{ $labels.instance }}) description: Filesystem is predicted to run out of inodes within the next 24 hours at current write rate - alert: HostUnusualDiskReadLatency expr: rate(node_disk_read_time_seconds_total[1m]) / rate(node_disk_reads_completed_total[1m]) > 0.1 and rate(node_disk_reads_completed_total[1m]) > 0 for: 2m labels: severity: warning annotations: summary: Host unusual disk read latency (instance {{ $labels.instance }}) description: Disk latency is growing (read operations > 100ms) - alert: HostUnusualDiskWriteLatency expr: rate(node_disk_write_time_seconds_total[1m]) / rate(node_disk_writes_completed_total[1m]) > 0.1 and rate(node_disk_writes_completed_total[1m]) > 0 for: 2m labels: severity: warning annotations: summary: Host unusual disk write latency (instance {{ $labels.instance }}) description: Disk latency is growing (write operations > 100ms) - alert: HostCpuStealNoisyNeighbor expr: avg by(instance) (rate(node_cpu_seconds_total{mode="steal"}[5m])) * 100 > 10 for: 0m labels: severity: warning annotations: summary: Host CPU steal noisy neighbor (instance {{ $labels.instance }}) description: CPU steal is > 10%. A noisy neighbor is killing VM performances or a spot instance may be out of credit. # 1000 context switches is an arbitrary number. # Alert threshold depends on nature of application. # Please read: https://github.com/samber/awesome-prometheus-alerts/issues/58 - alert: HostContextSwitching expr: (rate(node_context_switches_total[5m])) / (count without(cpu, mode) (node_cpu_seconds_total{mode="idle"})) > 50000 for: 0m labels: severity: warning annotations: summary: Host context switching (instance {{ $labels.instance }}) description: Context switching is growing on node (> 50000 / s) - alert: HostSwapIsEnabled expr: node_memory_SwapTotal_bytes > 0 for: 0m labels: severity: warning annotations: summary: Swap is discouraged nowadays - alert: HostPhysicalComponentTooHot expr: node_hwmon_temp_celsius > 75 for: 5m labels: severity: warning annotations: summary: Host physical component too hot (instance {{ $labels.instance }}) description: Physical hardware component too hot - alert: HostNodeOvertemperatureAlarm expr: node_hwmon_temp_alarm == 1 for: 0m labels: severity: critical annotations: summary: Host node overtemperature alarm (instance {{ $labels.instance }}) description: Physical node temperature alarm triggered - alert: HostRaidArrayGotInactive expr: node_md_state{state="inactive"} > 0 for: 0m labels: severity: critical annotations: summary: Host RAID array got inactive (instance {{ $labels.instance }}) description: RAID array {{ $labels.device }} is in degraded state due to one or more disks failures. Number of spare drives is insufficient to fix issue automatically. - alert: HostRaidDiskFailure expr: node_md_disks{state="failed"} > 0 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 - alert: HostOomKillDetected expr: increase(node_vmstat_oom_kill[1m]) > 0 for: 0m labels: severity: warning annotations: summary: Host OOM kill detected (instance {{ $labels.instance }}) description: OOM kill detected - alert: HostEdacCorrectableErrorsDetected expr: increase(node_edac_correctable_errors_total[1m]) > 0 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 }}\n LABELS = {{ $labels }}" - alert: HostEdacUncorrectableErrorsDetected expr: node_edac_uncorrectable_errors_total > 0 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 }}\n LABELS = {{ $labels }}" - alert: HostNetworkReceiveErrors expr: rate(node_network_receive_errs_total[2m]) / rate(node_network_receive_packets_total[2m]) > 0.01 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 }}\n LABELS = {{ $labels }}" - alert: HostNetworkTransmitErrors expr: rate(node_network_transmit_errs_total[2m]) / rate(node_network_transmit_packets_total[2m]) > 0.01 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 }}\n LABELS = {{ $labels }}" - alert: HostNetworkInterfaceSaturated expr: (rate(node_network_receive_bytes_total{device!~"^tap.*"}[1m]) + rate(node_network_transmit_bytes_total{device!~"^tap.*"}[1m])) / node_network_speed_bytes{device!~"^tap.*"} > 0.8 for: 1m labels: severity: warning annotations: summary: Host Network Interface Saturated (instance {{ $labels.instance }}) description: "The network interface {{ $labels.interface }} on {{ $labels.instance }} is getting overloaded." - alert: HostNetworkBondDegraded expr: node_bonding_active != node_bonding_slaves {master=~"bond.*"} for: 2m labels: severity: warning annotations: summary: Host Network Bond Degraded - alert: HostConntrackLimit expr: node_nf_conntrack_entries / node_nf_conntrack_entries_limit > 0.8 for: 5m labels: severity: warning annotations: summary: Host conntrack limit (instance {{ $labels.instance }}) description: The number of conntrack is approching limit - 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) for: 2m labels: severity: warning annotations: summary: Host clock skew (instance {{ $labels.instance }}) description: Clock skew detected. Clock is out of sync. - alert: HostClockNotSynchronising expr: min_over_time(node_timex_sync_status[1m]) == 0 and node_timex_maxerror_seconds >= 16 for: 2m labels: severity: warning annotations: summary: Host clock not synchronising (instance {{ $labels.instance }}) description: Clock not synchronising. --- apiVersion: monitoring.coreos.com/v1 kind: PrometheusRule metadata: name: smart spec: groups: - name: smart rules: - alert: SmartSSDWriteRateTooHigh expr: rate(smartmon_total_lbas_written_raw_value[72h]) * 512 > 10000000 for: 5m labels: severity: warning annotations: summary: SSD write rate exceeds 10MB/s description: At this rate the SSD will be worn out before warranty period expires --- apiVersion: monitoring.coreos.com/v1 kind: PrometheusRule metadata: name: temperatures spec: groups: - name: temperatures rules: - alert: HighDiskTemperature expr: smartmon_airflow_temperature_cel_raw_value > 45 or smartmon_temperature_celsius_raw_value > 45 for: 10m labels: severity: critical annotations: summary: High HDD/SSD temperature indicates high ambient temperature - alert: HighChipsetTemperature expr: node_hwmon_temp_celsius > 65 for: 10m labels: severity: warning annotations: summary: High chipset (CPU, NB) temperature indicates insufficient or failing fans - alert: LowDiskTemperature expr: smartmon_airflow_temperature_cel_raw_value < 10 or smartmon_temperature_celsius_raw_value < 10 for: 10m labels: severity: critical annotations: summary: Low HDD/SSD temperature indicates low ambient temperature and stuck server room exhaust fan relay --- apiVersion: monitoring.coreos.com/v1 kind: PodMonitor metadata: name: node-exporter spec: selector: matchLabels: app: node-exporter podMetricsEndpoints: - port: web scrapeTimeout: 30s relabelings: - sourceLabels: [__meta_kubernetes_pod_node_name] targetLabel: node --- apiVersion: v1 kind: ServiceAccount metadata: name: node-exporter --- apiVersion: apps/v1 kind: DaemonSet metadata: labels: app: node-exporter name: node-exporter spec: revisionHistoryLimit: 0 selector: matchLabels: app: node-exporter template: metadata: labels: app: node-exporter spec: containers: - name: node-exporter args: - --web.listen-address=0.0.0.0:9101 - --path.sysfs=/host/sys - --path.rootfs=/host/root - --no-collector.wifi - --collector.filesystem.mount-points-exclude=^/(dev|proc|sys|var/lib/docker/.+|var/lib/kubelet/pods/.+)($|/) - --collector.netclass.ignored-devices=^(veth|cali|vxlan|cni|vnet|tap|lo|wg) - --collector.netdev.device-exclude=^(veth|cali|vxlan|cni|vnet|tap|lo|wg) - --collector.diskstats.ignored-devices=^(sr[0-9][0-9]*)$ image: mirror.gcr.io/prom/node-exporter:v1.8.2 resources: limits: cpu: 50m memory: 180Mi requests: cpu: 5m memory: 20Mi volumeMounts: - mountPath: /host/sys mountPropagation: HostToContainer name: sys readOnly: true - mountPath: /host/root mountPropagation: HostToContainer name: root readOnly: true ports: - containerPort: 9101 name: web securityContext: runAsGroup: 65532 runAsNonRoot: true runAsUser: 65532 readOnlyRootFilesystem: true hostNetwork: true hostPID: true priorityClassName: system-node-critical securityContext: runAsNonRoot: true runAsUser: 65534 serviceAccountName: node-exporter tolerations: - operator: Exists volumes: - hostPath: path: /sys name: sys - hostPath: path: / name: root