[tempo-distributed] Enable autoscaling for Compactor

charts/tempo-distributed/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: tempo-distributed
 description: Grafana Tempo in MicroService mode
 type: application
-version: 1.15.4
+version: 1.16.0
 appVersion: 2.5.0
 engine: gotpl
 home: https://grafana.com/docs/tempo/latest/

charts/tempo-distributed/README.md

@@ -1,6 +1,6 @@
 # tempo-distributed
 
-![Version: 1.15.4](https://img.shields.io/badge/Version-1.15.4-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.5.0](https://img.shields.io/badge/AppVersion-2.5.0-informational?style=flat-square)
+![Version: 1.16.0](https://img.shields.io/badge/Version-1.16.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.5.0](https://img.shields.io/badge/AppVersion-2.5.0-informational?style=flat-square)
 
 Grafana Tempo in MicroService mode
 
@@ -261,6 +261,16 @@ The memcached default args are removed and should be provided manually. The sett
 | cache.caches[0].roles[0] | string | `"parquet-footer"` |  |
 | cache.caches[0].roles[1] | string | `"bloom"` |  |
 | cache.caches[0].roles[2] | string | `"frontend-search"` |  |
+| compactor.autoscaling | object | `{"enabled":false,"hpa":{"behavior":{},"enabled":false,"targetCPUUtilizationPercentage":100,"targetMemoryUtilizationPercentage":null},"keda":{"enabled":false,"triggers":[]},"maxReplicas":3,"minReplicas":1}` | Autoscaling configurations |
+| compactor.autoscaling.enabled | bool | `false` | Enable autoscaling for the compactor |
+| compactor.autoscaling.hpa | object | `{"behavior":{},"enabled":false,"targetCPUUtilizationPercentage":100,"targetMemoryUtilizationPercentage":null}` | Autoscaling via HPA object |
+| compactor.autoscaling.hpa.behavior | object | `{}` | Autoscaling behavior configuration for the compactor |
+| compactor.autoscaling.hpa.targetCPUUtilizationPercentage | int | `100` | Target CPU utilisation percentage for the compactor |
+| compactor.autoscaling.hpa.targetMemoryUtilizationPercentage | string | `nil` | Target memory utilisation percentage for the compactor |
+| compactor.autoscaling.keda | object | `{"enabled":false,"triggers":[]}` | Autoscaling via keda/ScaledObject |
+| compactor.autoscaling.keda.triggers | list | `[]` | List of autoscaling triggers for the compactor |
+| compactor.autoscaling.maxReplicas | int | `3` | Maximum autoscaling replicas for the compactor |
+| compactor.autoscaling.minReplicas | int | `1` | Minimum autoscaling replicas for the compactor |
 | compactor.config.compaction.block_retention | string | `"48h"` | Duration to keep blocks |
 | compactor.config.compaction.compacted_block_retention | string | `"1h"` |  |
 | compactor.config.compaction.compaction_cycle | string | `"30s"` | The time between compaction cycles |

charts/tempo-distributed/templates/compactor/hpa.yaml

@@ -0,0 +1,46 @@
+{{- if and .Values.compactor.autoscaling.enabled .Values.compactor.autoscaling.hpa.enabled }}
+{{- $apiVersion := include "tempo.hpa.apiVersion" . -}}
+apiVersion: {{ $apiVersion }}
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "tempo.resourceName" (dict "ctx" . "component" "compactor") }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "tempo.labels" (dict "ctx" . "component" "compactor") | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "tempo.resourceName" (dict "ctx" . "component" "compactor") }}
+  minReplicas: {{ .Values.compactor.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.compactor.autoscaling.maxReplicas }}
+  {{- with .Values.compactor.autoscaling.hpa.behavior }}
+  behavior:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  metrics:
+  {{- with .Values.compactor.autoscaling.hpa.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        {{- if (eq $apiVersion "autoscaling/v2") }}
+        target:
+          type: Utilization
+          averageUtilization: {{ . }}
+        {{- else }}
+        targetAverageUtilization: {{ . }}
+        {{- end }}
+  {{- end }}
+  {{- with .Values.compactor.autoscaling.hpa.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        {{- if (eq $apiVersion "autoscaling/v2") }}
+        target:
+          type: Utilization
+          averageUtilization: {{ . }}
+        {{- else }}
+        targetAverageUtilization: {{ . }}
+        {{- end }}
+  {{- end }}
+{{- end }}

charts/tempo-distributed/templates/compactor/keda-scaledObject.yaml

@@ -0,0 +1,25 @@
+{{- if and .Values.compactor.autoscaling.enabled .Values.compactor.autoscaling.keda.enabled }}
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  name: {{ include "tempo.resourceName" (dict "ctx" . "component" "compactor") }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "tempo.labels" (dict "ctx" . "component" "compactor") | nindent 4 }}
+spec:
+  minReplicaCount: {{ .Values.compactor.autoscaling.minReplicas }}
+  maxReplicaCount: {{ .Values.compactor.autoscaling.maxReplicas }}
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "tempo.resourceName" (dict "ctx" . "component" "compactor") }}
+  triggers:
+  {{- range .Values.compactor.autoscaling.keda.triggers }}
+  - type: {{ .type | quote }}
+    metadata:
+      serverAddress: {{ .metadata.serverAddress }}
+      threshold: {{ .metadata.threshold | quote }}
+      query: |
+        {{- .metadata.query | nindent 8 }}
+  {{- end }}
+{{- end }}

charts/tempo-distributed/values.yaml

@@ -541,6 +541,42 @@ distributor:
 compactor:
   # -- Number of replicas for the compactor
   replicas: 1
+
+  # -- Autoscaling configurations
+  autoscaling:
+    # -- Enable autoscaling for the compactor
+    enabled: false
+    # -- Minimum autoscaling replicas for the compactor
+    minReplicas: 1
+    # -- Maximum autoscaling replicas for the compactor
+    maxReplicas: 3
+    # -- Autoscaling via HPA object
+    hpa:
+      enabled: false
+      # -- Autoscaling behavior configuration for the compactor
+      behavior: {}
+      # -- Target CPU utilisation percentage for the compactor
+      targetCPUUtilizationPercentage: 100
+      # -- Target memory utilisation percentage for the compactor
+      targetMemoryUtilizationPercentage:
+    # -- Autoscaling via keda/ScaledObject
+    keda:
+      # requires https://keda.sh/
+      enabled: false
+      # -- List of autoscaling triggers for the compactor
+      triggers: []
+      # - type: prometheus
+      #   metadata:
+      #     serverAddress: "http://<prometheus-host>:9090"
+      #     threshold: "250"
+      #     query: |-
+      #       sum by (cluster, namespace, tenant) (
+      #         tempodb_compaction_outstanding_blocks{container="compactor", namespace=~".*"}
+      #       ) /
+      #       ignoring(tenant) group_left count by (cluster, namespace)(
+      #         tempo_build_info{container="compactor", namespace=~".*"}
+      #       )
+
   # -- hostAliases to add
   hostAliases: []
   #  - ip: 1.2.3.4