add nodeselector

library/common-test/tests/pod/deployment_container_other_test.yaml

@@ -146,3 +146,40 @@ tests:
       - failedTemplate:
           documentIndex: *deploymentDoc
           errorMessage: No commands were given for postStart lifecycle hook
+
+  - it: should fail with no value in a key in nodeSelector
+    set:
+      nodeSelector:
+        diskType:
+    asserts:
+      - failedTemplate:
+          documentIndex: *deploymentDoc
+          errorMessage: Value is required on every key in <nodeSelector>
+
+  - it: should pass with nodeSelector set
+    set:
+      nodeSelector:
+        diskType: ssd
+        cpuType: intel
+    asserts:
+      - equal:
+          documentIndex: *deploymentDoc
+          path: spec.template.spec.nodeSelector
+          value:
+            diskType: ssd
+            cpuType: intel
+
+  - it: should pass with nodeSelector set from tpl
+    set:
+      some_key: ssd
+      some_other_key: intel
+      nodeSelector:
+        diskType: "{{ .Values.some_key }}"
+        cpuType: "{{ .Values.some_other_key }}"
+    asserts:
+      - equal:
+          documentIndex: *deploymentDoc
+          path: spec.template.spec.nodeSelector
+          value:
+            diskType: ssd
+            cpuType: intel

library/common/1.0.0/templates/lib/chart/_nodeSelector.tpl

@@ -0,0 +1,11 @@
+{{/* Returns node selector */}}
+{{- define "ix.v1.common.nodeSelector" -}}
+  {{- with .Values.nodeSelector -}}
+    {{- range $k, $v := . }}
+      {{- if (not $v) -}}
+        {{- fail "Value is required on every key in <nodeSelector>" -}}
+      {{- end }}
+{{ $k }}: {{ tpl $v $ }}
+    {{- end }}
+  {{- end -}}
+{{- end -}}

library/common/1.0.0/templates/lib/controller/_pod.tpl

@@ -21,6 +21,10 @@ dnsConfig:
 hostAliases:
   {{- . | nindent 2 }}
 {{- end -}}
+{{- with (include "ix.v1.common.nodeSelector" . | trim) }}
+nodeSelector:
+  {{- . | nindent 2 }}
+{{- end -}}
 {{- with .Values.termination.gracePeriodSeconds }}
 terminationGracePeriodSeconds: {{ . }}
 {{- end }}

library/common/1.0.0/values.yaml

@@ -55,6 +55,8 @@ dnsConfig: {}
 
 hostAliases: []
 
+nodeSelector: {}
+
 # TODO: docs
 podSecurityContext:
   runAsUser: 568