Issues/217

charts/microservice/Chart.yaml

@@ -2,8 +2,9 @@ apiVersion: v2
 name: microservice
 description: Basic helm chart for deploying microservices on kubernetes with best practices
 type: application
-version: 0.1.5
+version: 0.1.6
 appVersion: "0.1.2"
 maintainers:
   - name: ashwani-opstree
   - name: tripathishikha1
+  - name: khushimalhoz

charts/microservice/examples/deploy-nginx.yaml

@@ -7,11 +7,11 @@ deployment:
     name: nginx
     tag: latest
     pullPolicy: IfNotPresent
-  livenessProbe: 
+  livenessProbe:
     httpGet:
       path: "/"
       port: http
-  readinessProbe: 
+  readinessProbe:
     httpGet:
       path: "/"
       port: http
@@ -30,4 +30,14 @@ deployment:
         data:
           index.html: |
             Hello! Opstree
-
+  topologySpreadConstraints:
+    whenUnsatisfiable: "DoNotSchedule"
+
+# serviceAccount:
+#   create: true
+#   annotations: "aws arn link"
+
+# serviceAccount:
+#   name: "myserviceaccount"
+
+

charts/microservice/templates/_helpers.tpl

@@ -51,4 +51,4 @@ Create the name of the service account to use
 {{- else }}
 {{- default "default" .Values.serviceAccount.name }}
 {{- end }}
-{{- end }}
+{{- end }}

charts/microservice/templates/deployment.yaml

@@ -19,7 +19,6 @@ spec:
   strategy:
     {{- toYaml .Values.deployment.strategy | nindent 4 }}
   {{- end }}
-  terminationGracePeriodSeconds: {{ .Values.deployment.terminationGracePeriodSeconds }}
   selector:
     matchLabels:
       {{- include "microservice.selectorLabels" . | nindent 6 }}
@@ -38,7 +37,13 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
-      serviceAccountName: {{ include "microservice.serviceAccountName" . }}
+      {{- if .Values.serviceAccount.create }}
+      serviceAccountName: {{ include "microservice.serviceAccountName" . }}-sa
+      {{- end }}
+      {{- if .Values.serviceAccount.name }}
+      serviceAccountName: {{ .Values.serviceAccount.name }}
+      {{- end }}
+      terminationGracePeriodSeconds: {{ .Values.deployment.terminationGracePeriodSeconds }}
       containers:
         - name: {{ include "microservice.fullname" . }}
           image: "{{ .Values.deployment.image.name }}:{{ .Values.deployment.image.tag }}"
@@ -100,11 +105,35 @@ spec:
       nodeSelector:
         {{- toYaml . | nindent 8 }}
       {{- end }}
-      {{- with .Values.deployment.affinity }}
+      {{- if and .Values.deployment.affinity.enabled (or .Values.deployment.affinity.preferred.enabled .Values.deployment.affinity.required.enabled) }}
       affinity:
-        {{- toYaml . | nindent 8 }}
+        podAntiAffinity:
+          {{- if .Values.deployment.affinity.preferred.enabled }}
+          preferredDuringSchedulingIgnoredDuringExecution:
+          - weight: 100
+            podAffinityTerm:
+              labelSelector:
+                matchLabels:
+                  app: {{ include "microservice.fullname" . }}
+              topologyKey: {{ .Values.deployment.affinity.topologyKey }}
+          {{- end }}
+          {{- if and .Values.deployment.affinity.required.enabled (not .Values.deployment.affinity.preferred.enabled) }}
+          requiredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchLabels:
+                app: {{ include "microservice.fullname" . }}
+            topologyKey: {{ .Values.deployment.affinity.topologyKey }}
+          {{- end }}
       {{- end }}
-      {{- with .Values.deployment.tolerations }}
-      tolerations:
-        {{- toYaml . | nindent 8 }}
+      {{- if .Values.deployment.topologySpreadConstraints.enabled }}
+      topologySpreadConstraints:
+        - maxSkew: 1
+          topologyKey: {{ .Values.deployment.topologySpreadConstraints.topologyKey }}
+          whenUnsatisfiable: "{{ .Values.deployment.topologySpreadConstraints.whenUnsatisfiable }}"
+          labelSelector:
+            matchLabels:
+              app: {{ include "microservice.fullname" . }}
+          {{- if ( eq .Values.deployment.topologySpreadConstraints.whenUnsatisfiable "DoNotSchedule")}}
+          minDomains: 2
+          {{- end }}
       {{- end }}

charts/microservice/values.yaml

@@ -27,7 +27,7 @@ deployment:
   annotations: {}
   podAnnotations: {}
 
-  terminationGracePeriodSeconds: 30
+  terminationGracePeriodSeconds: 60
 
   healthProbes:
     enabled: true
@@ -120,7 +120,19 @@ deployment:
 
   tolerations: []
 
-  affinity: {}
+  affinity:
+    enabled: true
+    preferred:
+      enabled: true
+    required:
+      enabled: false
+    topologyKey: "topology.kubernetes.io/zone"
+
+  topologySpreadConstraints:
+    enabled: true
+    # whenUnsatisfiable: "DoNotSchedule" OR "ScheduleAnyway"
+    whenUnsatisfiable: "ScheduleAnyway"
+    topologyKey: "topology.kubernetes.io/zone"
 
 hpa:
   enabled: true
@@ -138,10 +150,6 @@ service:
 
 serviceAccount:
   create: false
-  # Automatically mount a ServiceAccount's API credentials?
   automount: true
-  # Annotations to add to the service account
   annotations: {}
-  # The name of the service account to use.
-  # If not set and create is true, a name is generated using the fullname template
   name: ""