[synthetics] Add support for PDB for private location deployment (#1459)

* feat(synthetics): add pdb support for private locations * feat(synthetics): add pdb support for private locations
DataDog · Jul 17, 2024 · d661a02 · d661a02
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diff --git a/charts/synthetics-private-location/CHANGELOG.md b/charts/synthetics-private-location/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Datadog changelog
 
+## 0.17.0
+
+* Add `podDisruptionBudget` to allow creating and configuring PodDisruptionBudget for deployment.
+
 ## 0.16.4
 
 * Update private location image version to `1.49.0`.

diff --git a/charts/synthetics-private-location/Chart.yaml b/charts/synthetics-private-location/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v2
 name: synthetics-private-location
-version: 0.16.4
+version: 0.17.0
 appVersion: 1.49.0
 description: Datadog Synthetics Private Location
 keywords:

diff --git a/charts/synthetics-private-location/README.md b/charts/synthetics-private-location/README.md
@@ -1,6 +1,6 @@
 # Datadog Synthetics Private Location
 
-![Version: 0.16.4](https://img.shields.io/badge/Version-0.16.4-informational?style=flat-square) ![AppVersion: 1.49.0](https://img.shields.io/badge/AppVersion-1.49.0-informational?style=flat-square)
+![Version: 0.17.0](https://img.shields.io/badge/Version-0.17.0-informational?style=flat-square) ![AppVersion: 1.49.0](https://img.shields.io/badge/AppVersion-1.49.0-informational?style=flat-square)
 
 [Datadog](https://www.datadoghq.com/) is a hosted infrastructure monitoring platform. This chart adds a Datadog Synthetics Private Location Deployment. For more information about synthetics monitoring with Datadog, please refer to the [Datadog documentation website](https://docs.datadoghq.com/synthetics/private_locations/?tab=helmchart).
 
@@ -46,6 +46,7 @@ helm install <RELEASE_NAME> datadog/synthetics-private-location --set-file confi
 | nameOverride | string | `""` | Override name of app |
 | nodeSelector | object | `{}` | Allows to schedule Datadog Synthetics Private Location on specific nodes |
 | podAnnotations | object | `{}` | Annotations to set to Datadog Synthetics Private Location PODs |
+| podDisruptionBudget | object | `{"enabled":false,"minAvailable":1}` | Allows to create and configure PodDisruptionBudget for Datadog Synthetics Private Location deployment |
 | podLabels | object | `{}` | Labels to be placed on pods managed by the deployment |
 | podSecurityContext | object | `{}` | Security context to set to Datadog Synthetics Private Location PODs |
 | priorityClassName | string | `""` | Allows to specify PriorityClass for Datadog Synthetics Private Location PODs |

diff --git a/charts/synthetics-private-location/templates/_helpers.tpl b/charts/synthetics-private-location/templates/_helpers.tpl
@@ -63,3 +63,14 @@ Create the name of the service account to use
 {{- default "default" .Values.serviceAccount.name }}
 {{- end }}
 {{- end }}
+
+{{/*
+Return the appropriate apiVersion for PodDisruptionBudget policy APIs.
+*/}}
+{{- define "policy.poddisruptionbudget.apiVersion" -}}
+{{- if or (.Capabilities.APIVersions.Has "policy/v1/PodDisruptionBudget") (semverCompare ">=1.21" .Capabilities.KubeVersion.Version) -}}
+"policy/v1"
+{{- else -}}
+"policy/v1beta1"
+{{- end -}}
+{{- end -}}
diff --git a/charts/synthetics-private-location/templates/pdb.yaml b/charts/synthetics-private-location/templates/pdb.yaml
@@ -0,0 +1,17 @@
+{{- if .Values.podDisruptionBudget.enabled -}}
+apiVersion: {{ template "policy.poddisruptionbudget.apiVersion" . }}
+kind: PodDisruptionBudget
+metadata:
+  name: {{ include "synthetics-private-location.fullname" . }}
+  labels:
+    {{- include "synthetics-private-location.labels" . | nindent 4 }}
+spec:
+{{- if .Values.podDisruptionBudget.minAvailable }}
+  minAvailable: {{ .Values.podDisruptionBudget.minAvailable }}
+{{- end }}
+{{- if .Values.podDisruptionBudget.maxUnavailable }}
+  maxUnavailable: {{ .Values.podDisruptionBudget.maxUnavailable }}
+{{- end }}
+  selector:
+    matchLabels: {{- include "synthetics-private-location.selectorLabels" . | nindent 6 }}
+{{- end -}}
diff --git a/charts/synthetics-private-location/values.yaml b/charts/synthetics-private-location/values.yaml
@@ -124,3 +124,9 @@ enableStatusProbes: false
 
 # priorityClassName -- Allows to specify PriorityClass for Datadog Synthetics Private Location PODs
 priorityClassName: ""
+
+# podDisruptionBudget -- Allows to create and configure PodDisruptionBudget for Datadog Synthetics Private Location deployment
+podDisruptionBudget:
+  enabled: false
+  minAvailable: 1
+  # maxUnavailable: 1