forked from k-space/kube
longhorn-system: Updates
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longhorn-system/.gitignore
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longhorn-system/.gitignore
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longhorn.yaml
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# Longhorn distributed block storage system
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Pull the manifest and apply changes
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## For users
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You should really avoid using Longhorn as it has over time proven to be
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unreliable system. Prefer using remote databases in your application via
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the Kubernetes operator pattern.
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Use Longhorn for applications that need persistent storage, but are unable
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to provide replication in the application layer:
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* Applications that insist writing into filesystem
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* Applications that serve Git repositories (eg Gitea)
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* Applications that check out Git repositories (eg Woodpecker, Drone and CI systems)
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* Applications that need to use SQLite
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Instead of using built-in `longhorn` storage class, please add new storage class
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with suitable replication, data locality parameters and reclaim policy
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[https://git.k-space.ee/k-space/kube/src/branch/master/storage-class.yaml](here)
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Longhorn backups are made once per day and it's configured to be uploaded to
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the Minio S3 bucket hosted at nas.k-space.ee
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## For administrators
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Longhorn was last upgraded with following snippet:
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```
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wget https://raw.githubusercontent.com/longhorn/longhorn/v1.5.1/deploy/longhorn.yaml -O application.yml
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wget https://raw.githubusercontent.com/longhorn/longhorn/v1.6.2/deploy/longhorn.yaml
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patch -p0 < changes.diff
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kubectl -n longhorn-system apply -f longhorn.yml -f application-extras.yml -f backup.yaml
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```
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To upgrade use following:
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```
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kubectl -n longhorn-system apply -f application.yml -f application-extras.yml
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```
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After deploying specify `dedicated=storage:NoSchedule`
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After initial deployment `dedicated=storage:NoSchedule` was specified
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for `Kubernetes Taint Toleration` under `Setting -> General` on
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[Longhorn Dashboard](https://longhorn.k-space.ee/).
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Proceed to tag suitable nodes with `storage` and disable Longhorn scheduling on others.
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Suitable nodes were tagged with `storage` and Longhorn scheduling was disabled on others.
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Refer to `application.yaml` to see how backups are configured.
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@ -1,3 +1,4 @@
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# yamllint disable rule:line-length
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---
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apiVersion: codemowers.cloud/v1beta1
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kind: OIDCMiddlewareClient
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@ -27,19 +28,19 @@ metadata:
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traefik.ingress.kubernetes.io/router.tls: "true"
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spec:
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rules:
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- host: longhorn.k-space.ee
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http:
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paths:
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- pathType: Prefix
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path: "/"
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backend:
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service:
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name: longhorn-frontend
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port:
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number: 80
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- host: longhorn.k-space.ee
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http:
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paths:
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- pathType: Prefix
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path: "/"
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backend:
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service:
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name: longhorn-frontend
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port:
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number: 80
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tls:
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- hosts:
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- "*.k-space.ee"
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- hosts:
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- "*.k-space.ee"
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---
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apiVersion: monitoring.coreos.com/v1
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kind: PodMonitor
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@ -59,81 +60,81 @@ spec:
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groups:
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- name: longhorn
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rules:
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- alert: LonghornVolumeActualSpaceUsedWarning
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annotations:
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description: The accumulated snapshots for volume use up more space than the volume's capacity
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summary: The actual used space of Longhorn volume is twice the size of the volume capacity.
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expr: longhorn_volume_actual_size_bytes > longhorn_volume_capacity_bytes * 2
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for: 5m
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labels:
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issue: The actual used space of Longhorn volume {{$labels.volume}} on {{$labels.node}} is high.
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severity: warning
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- alert: LonghornVolumeStatusCritical
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annotations:
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description: Longhorn volume {{$labels.volume}} on {{$labels.node}} is Fault for
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more than 2 minutes.
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summary: Longhorn volume {{$labels.volume}} is Fault
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expr: longhorn_volume_robustness == 3
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for: 5m
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labels:
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issue: Longhorn volume {{$labels.volume}} is Fault.
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severity: critical
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- alert: LonghornVolumeStatusWarning
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annotations:
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description: Longhorn volume {{$labels.volume}} on {{$labels.node}} is Degraded for
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more than 5 minutes.
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summary: Longhorn volume {{$labels.volume}} is Degraded
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expr: longhorn_volume_robustness == 2
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for: 5m
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labels:
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issue: Longhorn volume {{$labels.volume}} is Degraded.
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severity: warning
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- alert: LonghornNodeStorageWarning
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annotations:
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description: The used storage of node {{$labels.node}} is at {{$value}}% capacity for
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more than 5 minutes.
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summary: The used storage of node is over 70% of the capacity.
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expr: (longhorn_node_storage_usage_bytes / longhorn_node_storage_capacity_bytes) * 100 > 70
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for: 5m
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labels:
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issue: The used storage of node {{$labels.node}} is high.
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severity: warning
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- alert: LonghornDiskStorageWarning
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annotations:
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description: The used storage of disk {{$labels.disk}} on node {{$labels.node}} is at {{$value}}% capacity for
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more than 5 minutes.
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summary: The used storage of disk is over 70% of the capacity.
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expr: (longhorn_disk_usage_bytes / longhorn_disk_capacity_bytes) * 100 > 70
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for: 5m
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labels:
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issue: The used storage of disk {{$labels.disk}} on node {{$labels.node}} is high.
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severity: warning
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- alert: LonghornNodeDown
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annotations:
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description: There are {{$value}} Longhorn nodes which have been offline for more than 5 minutes.
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summary: Longhorn nodes is offline
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expr: (avg(longhorn_node_count_total) or on() vector(0)) - (count(longhorn_node_status{condition="ready"} == 1) or on() vector(0)) > 0
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for: 5m
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labels:
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issue: There are {{$value}} Longhorn nodes are offline
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severity: critical
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- alert: LonghornIntanceManagerCPUUsageWarning
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annotations:
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description: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} has CPU Usage / CPU request is {{$value}}% for
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more than 5 minutes.
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summary: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} has CPU Usage / CPU request is over 300%.
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expr: (longhorn_instance_manager_cpu_usage_millicpu/longhorn_instance_manager_cpu_requests_millicpu) * 100 > 300
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for: 5m
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labels:
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issue: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} consumes 3 times the CPU request.
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severity: warning
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- alert: LonghornNodeCPUUsageWarning
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annotations:
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description: Longhorn node {{$labels.node}} has CPU Usage / CPU capacity is {{$value}}% for
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more than 5 minutes.
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summary: Longhorn node {{$labels.node}} experiences high CPU pressure for more than 5m.
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expr: (longhorn_node_cpu_usage_millicpu / longhorn_node_cpu_capacity_millicpu) * 100 > 90
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for: 5m
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labels:
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issue: Longhorn node {{$labels.node}} experiences high CPU pressure.
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severity: warning
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- alert: LonghornVolumeActualSpaceUsedWarning
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annotations:
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description: The accumulated snapshots for volume use up more space than the volume's capacity
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summary: The actual used space of Longhorn volume is twice the size of the volume capacity.
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expr: longhorn_volume_actual_size_bytes > longhorn_volume_capacity_bytes * 2
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for: 5m
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labels:
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issue: The actual used space of Longhorn volume {{$labels.volume}} on {{$labels.node}} is high.
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severity: warning
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- alert: LonghornVolumeStatusCritical
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annotations:
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description: Longhorn volume {{$labels.volume}} on {{$labels.node}} is Fault for
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more than 2 minutes.
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summary: Longhorn volume {{$labels.volume}} is Fault
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expr: longhorn_volume_robustness == 3
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for: 5m
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labels:
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issue: Longhorn volume {{$labels.volume}} is Fault.
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severity: critical
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- alert: LonghornVolumeStatusWarning
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annotations:
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description: Longhorn volume {{$labels.volume}} on {{$labels.node}} is Degraded for
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more than 5 minutes.
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summary: Longhorn volume {{$labels.volume}} is Degraded
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expr: longhorn_volume_robustness == 2
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for: 5m
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labels:
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issue: Longhorn volume {{$labels.volume}} is Degraded.
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severity: warning
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- alert: LonghornNodeStorageWarning
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annotations:
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description: The used storage of node {{$labels.node}} is at {{$value}}% capacity for
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more than 5 minutes.
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summary: The used storage of node is over 70% of the capacity.
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expr: (longhorn_node_storage_usage_bytes / longhorn_node_storage_capacity_bytes) * 100 > 70
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for: 5m
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labels:
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issue: The used storage of node {{$labels.node}} is high.
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severity: warning
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- alert: LonghornDiskStorageWarning
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annotations:
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description: The used storage of disk {{$labels.disk}} on node {{$labels.node}} is at {{$value}}% capacity for
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more than 5 minutes.
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summary: The used storage of disk is over 70% of the capacity.
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expr: (longhorn_disk_usage_bytes / longhorn_disk_capacity_bytes) * 100 > 70
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for: 5m
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labels:
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issue: The used storage of disk {{$labels.disk}} on node {{$labels.node}} is high.
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severity: warning
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- alert: LonghornNodeDown
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annotations:
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description: There are {{$value}} Longhorn nodes which have been offline for more than 5 minutes.
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summary: Longhorn nodes is offline
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expr: (avg(longhorn_node_count_total) or on() vector(0)) - (count(longhorn_node_status{condition="ready"} == 1) or on() vector(0)) > 0
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for: 5m
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labels:
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issue: There are {{$value}} Longhorn nodes are offline
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severity: critical
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- alert: LonghornIntanceManagerCPUUsageWarning
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annotations:
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description: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} has CPU Usage / CPU request is {{$value}}% for
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more than 5 minutes.
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summary: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} has CPU Usage / CPU request is over 300%.
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expr: (longhorn_instance_manager_cpu_usage_millicpu/longhorn_instance_manager_cpu_requests_millicpu) * 100 > 300
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for: 5m
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labels:
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issue: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} consumes 3 times the CPU request.
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severity: warning
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- alert: LonghornNodeCPUUsageWarning
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annotations:
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description: Longhorn node {{$labels.node}} has CPU Usage / CPU capacity is {{$value}}% for
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more than 5 minutes.
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summary: Longhorn node {{$labels.node}} experiences high CPU pressure for more than 5m.
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expr: (longhorn_node_cpu_usage_millicpu / longhorn_node_cpu_capacity_millicpu) * 100 > 90
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for: 5m
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labels:
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issue: Longhorn node {{$labels.node}} experiences high CPU pressure.
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severity: warning
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File diff suppressed because it is too large
Load Diff
@ -1,5 +1,5 @@
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--- application.yml 2024-07-07 14:16:47.953593433 +0300
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+++ application.modded 2024-07-07 14:18:51.103452617 +0300
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--- longhorn.yaml 2024-07-07 14:16:47.953593433 +0300
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+++ longhorn.modded 2024-07-07 14:18:51.103452617 +0300
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@@ -86,14 +86,14 @@
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storageclass.kubernetes.io/is-default-class: "true"
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provisioner: driver.longhorn.io
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