Trino autoscaler (#84)

* autoscaler implementation * bump up version * use enabled switch * update readme
valeriano-manassero · Oct 19, 2021 · 9bcd9e1 · 9bcd9e1
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diff --git a/valeriano-manassero/trino/Chart.yaml b/valeriano-manassero/trino/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v1
 appVersion: "363"
 description: High performance, distributed SQL query engine for big data
 name: trino
-version: 1.5.0
+version: 1.6.0
 home: https://trino.io
 icon: https://trino.io/assets/images/trino-logo/trino-ko_tiny-alt.svg
 sources:

diff --git a/valeriano-manassero/trino/README.md b/valeriano-manassero/trino/README.md
@@ -1,6 +1,6 @@
 # trino
 
-![Version: 1.5.0](https://img.shields.io/badge/Version-1.5.0-informational?style=flat-square) ![AppVersion: 363](https://img.shields.io/badge/AppVersion-363-informational?style=flat-square)
+![Version: 1.6.0](https://img.shields.io/badge/Version-1.6.0-informational?style=flat-square) ![AppVersion: 363](https://img.shields.io/badge/AppVersion-363-informational?style=flat-square)
 
 High performance, distributed SQL query engine for big data
 
@@ -39,6 +39,9 @@ High performance, distributed SQL query engine for big data
 | resources | object | `{}` |  |
 | schemas | object | `{}` |  |
 | secretMounts | list | `[]` |  |
+| server.autoscaler.enabled | bool | `false` |  |
+| server.autoscaler.maxReplicas | int | `5` |  |
+| server.autoscaler.targetCPUUtilizationPercentage | int | `50` |  |
 | server.config.http.port | int | `8080` |  |
 | server.config.httpsServer.enabled | bool | `false` |  |
 | server.config.httpsServer.keystore.key | string | `""` |  |

diff --git a/valeriano-manassero/trino/templates/autoscaler.yaml b/valeriano-manassero/trino/templates/autoscaler.yaml
@@ -0,0 +1,14 @@
+{{- if .Values.server.autoscaler.maxReplicas }}
+apiVersion: autoscaling/v1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ template "trino.worker" . }}
+spec:
+  maxReplicas: {{ .Values.server.autoscaler.maxReplicas }}
+  minReplicas: {{ .Values.server.workers }}
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ template "trino.worker" . }}
+  targetCPUUtilizationPercentage: {{ .Values.server.autoscaler.targetCPUUtilizationPercentage }}
+{{- end }}
diff --git a/valeriano-manassero/trino/values.yaml b/valeriano-manassero/trino/values.yaml
@@ -49,6 +49,10 @@ server:
       type: "UseG1GC"
       g1:
         heapRegionSize: "32M"
+  autoscaler:
+    enabled: false
+    maxReplicas: 5
+    targetCPUUtilizationPercentage: 50
 
 initContainers: {}
   # coordinator: