From 28456ffafe714deff5a77cb55cb00960ff8e583f Mon Sep 17 00:00:00 2001
From: Alex Vest <alex.vest@nutmeg.com>
Date: Fri, 23 Sep 2022 09:36:38 +0100
Subject: [PATCH] Add PodAntiAffinity if HA is enabled

---
 .../chart/reloader/templates/_helpers.tpl       | 17 ++++++++++++++++-
 .../chart/reloader/templates/deployment.yaml    |  5 ++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/deployments/kubernetes/chart/reloader/templates/_helpers.tpl b/deployments/kubernetes/chart/reloader/templates/_helpers.tpl
index eb7a701..f481f1e 100644
--- a/deployments/kubernetes/chart/reloader/templates/_helpers.tpl
+++ b/deployments/kubernetes/chart/reloader/templates/_helpers.tpl
@@ -28,6 +28,21 @@ heritage: {{ .Release.Service | quote }}
 app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
 {{- end -}}
 
+{{/*
+Create pod anti affinity labels
+*/}}
+{{- define "reloader-podAntiAffinity" -}}
+podAntiAffinity:
+  preferredDuringSchedulingIgnoredDuringExecution:
+  - labelSelector:
+      matchExpressions:
+      - key: app
+        operator: In
+        values:
+        - {{ template "reloader-fullname" . }}
+    topologyKey: "kubernetes.io/hostname"
+{{- end -}}
+
 {{/*
 Create the name of the service account to use
 */}}
@@ -45,4 +60,4 @@ Create the annotations to support helm3
 {{- define "reloader-helm3.annotations" -}}
 meta.helm.sh/release-namespace: {{ .Release.Namespace | quote }}
 meta.helm.sh/release-name: {{ .Release.Name | quote }}
-{{- end -}}
\ No newline at end of file
+{{- end -}}
diff --git a/deployments/kubernetes/chart/reloader/templates/deployment.yaml b/deployments/kubernetes/chart/reloader/templates/deployment.yaml
index bb5c920..cf9535c 100644
--- a/deployments/kubernetes/chart/reloader/templates/deployment.yaml
+++ b/deployments/kubernetes/chart/reloader/templates/deployment.yaml
@@ -45,9 +45,12 @@ spec:
       nodeSelector:
 {{ toYaml .Values.reloader.deployment.nodeSelector | indent 8 }}
       {{- end }}
-      {{- if .Values.reloader.deployment.affinity }}
+      {{- if or (.Values.reloader.deployment.affinity) (.Values.reloader.enableHA) }}
       affinity:
+      {{- if .Values.reloader.deployment.affinity }}
 {{ toYaml .Values.reloader.deployment.affinity | indent 8 }}
+      {{- end}}
+{{ include "reloader-podAntiAffinity" . | indent 8 }}
       {{- end }}
       {{- if .Values.reloader.deployment.tolerations }}
       tolerations: