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kube/longhorn-system/application-extras.yml

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---
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apiVersion: codemowers.cloud/v1beta1
kind: OIDCMiddlewareClient
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metadata:
name: ui
spec:
displayName: Longhorn
uri: 'https://longhorn.k-space.ee'
allowedGroups:
- k-space:kubernetes:admins
headerMapping:
email: Remote-Email
groups: Remote-Groups
name: Remote-Name
user: Remote-Username
---
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apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: longhorn-dashboard
namespace: longhorn-system
annotations:
kubernetes.io/ingress.class: traefik
external-dns.alpha.kubernetes.io/target: traefik.k-space.ee
traefik.ingress.kubernetes.io/router.entrypoints: websecure
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traefik.ingress.kubernetes.io/router.middlewares: longhorn-system-ui@kubernetescrd
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traefik.ingress.kubernetes.io/router.tls: "true"
spec:
rules:
- host: longhorn.k-space.ee
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: longhorn-frontend
port:
number: 80
tls:
- hosts:
- "*.k-space.ee"
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---
apiVersion: monitoring.coreos.com/v1
kind: PodMonitor
metadata:
name: manager
spec:
selector: {}
podMetricsEndpoints:
- port: manager
---
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
name: longhorn
spec:
# Copied from https://longhorn.io/docs/1.2.4/monitoring/alert-rules-example/
groups:
- name: longhorn
rules:
- alert: LonghornVolumeActualSpaceUsedWarning
annotations:
description: The accumulated snapshots for volume use up more space than the volume's capacity
summary: The actual used space of Longhorn volume is twice the size of the volume capacity.
expr: longhorn_volume_actual_size_bytes > longhorn_volume_capacity_bytes * 2
for: 5m
labels:
issue: The actual used space of Longhorn volume {{$labels.volume}} on {{$labels.node}} is high.
severity: warning
- alert: LonghornVolumeStatusCritical
annotations:
description: Longhorn volume {{$labels.volume}} on {{$labels.node}} is Fault for
more than 2 minutes.
summary: Longhorn volume {{$labels.volume}} is Fault
expr: longhorn_volume_robustness == 3
for: 5m
labels:
issue: Longhorn volume {{$labels.volume}} is Fault.
severity: critical
- alert: LonghornVolumeStatusWarning
annotations:
description: Longhorn volume {{$labels.volume}} on {{$labels.node}} is Degraded for
more than 5 minutes.
summary: Longhorn volume {{$labels.volume}} is Degraded
expr: longhorn_volume_robustness == 2
for: 5m
labels:
issue: Longhorn volume {{$labels.volume}} is Degraded.
severity: warning
- alert: LonghornNodeStorageWarning
annotations:
description: The used storage of node {{$labels.node}} is at {{$value}}% capacity for
more than 5 minutes.
summary: The used storage of node is over 70% of the capacity.
expr: (longhorn_node_storage_usage_bytes / longhorn_node_storage_capacity_bytes) * 100 > 70
for: 5m
labels:
issue: The used storage of node {{$labels.node}} is high.
severity: warning
- alert: LonghornDiskStorageWarning
annotations:
description: The used storage of disk {{$labels.disk}} on node {{$labels.node}} is at {{$value}}% capacity for
more than 5 minutes.
summary: The used storage of disk is over 70% of the capacity.
expr: (longhorn_disk_usage_bytes / longhorn_disk_capacity_bytes) * 100 > 70
for: 5m
labels:
issue: The used storage of disk {{$labels.disk}} on node {{$labels.node}} is high.
severity: warning
- alert: LonghornNodeDown
annotations:
description: There are {{$value}} Longhorn nodes which have been offline for more than 5 minutes.
summary: Longhorn nodes is offline
expr: (avg(longhorn_node_count_total) or on() vector(0)) - (count(longhorn_node_status{condition="ready"} == 1) or on() vector(0)) > 0
for: 5m
labels:
issue: There are {{$value}} Longhorn nodes are offline
severity: critical
- alert: LonghornIntanceManagerCPUUsageWarning
annotations:
description: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} has CPU Usage / CPU request is {{$value}}% for
more than 5 minutes.
summary: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} has CPU Usage / CPU request is over 300%.
expr: (longhorn_instance_manager_cpu_usage_millicpu/longhorn_instance_manager_cpu_requests_millicpu) * 100 > 300
for: 5m
labels:
issue: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} consumes 3 times the CPU request.
severity: warning
- alert: LonghornNodeCPUUsageWarning
annotations:
description: Longhorn node {{$labels.node}} has CPU Usage / CPU capacity is {{$value}}% for
more than 5 minutes.
summary: Longhorn node {{$labels.node}} experiences high CPU pressure for more than 5m.
expr: (longhorn_node_cpu_usage_millicpu / longhorn_node_cpu_capacity_millicpu) * 100 > 90
for: 5m
labels:
issue: Longhorn node {{$labels.node}} experiences high CPU pressure.
severity: warning