Add affinity support (#1170)

* Add support for setting nodeSelector/affinity/tolerations on all deployments of fission components.
* Add extraCoreComponmentPodConfig helm value to allow setting of affinty/tolerations/nodeSelectors/etc on core pods

charts/fission-core/templates/deployment.yaml

@@ -164,6 +164,9 @@ spec:
       - name: config-volume
         configMap:
           name: feature-config
+{{- if .Values.extraCoreComponmentPodConfig }}
+{{ toYaml .Values.extraCoreComponmentPodConfig | indent 6 -}}
+{{- end }}
 
 ---
 apiVersion: extensions/v1beta1
@@ -232,6 +235,9 @@ spec:
           initialDelaySeconds: 35
           periodSeconds: 5
       serviceAccount: fission-svc
+{{- if .Values.extraCoreComponmentPodConfig }}
+{{ toYaml .Values.extraCoreComponmentPodConfig | indent 6 -}}
+{{- end }}
 
 ---
 apiVersion: v1
@@ -306,6 +312,9 @@ spec:
           initialDelaySeconds: 35
           periodSeconds: 5
       serviceAccount: fission-svc
+{{- if .Values.extraCoreComponmentPodConfig }}
+{{ toYaml .Values.extraCoreComponmentPodConfig | indent 6 -}}
+{{- end }}
 
 ---
 apiVersion: extensions/v1beta1
@@ -349,6 +358,9 @@ spec:
         - name: FETCHER_MAXMEM
           value: {{ .Values.fetcherMaxMem | default "128Mi" | quote }}          
       serviceAccount: fission-svc
+{{- if .Values.extraCoreComponmentPodConfig }}
+{{ toYaml .Values.extraCoreComponmentPodConfig | indent 6 -}}
+{{- end }}
 
 ---
 apiVersion: extensions/v1beta1
@@ -374,6 +386,9 @@ spec:
         - name: TRACING_SAMPLING_RATE
           value: {{ .Values.traceSamplingRate | default "0.5" | quote }}
       serviceAccount: fission-svc
+{{- if .Values.extraCoreComponmentPodConfig }}
+{{ toYaml .Values.extraCoreComponmentPodConfig | indent 6 -}}
+{{- end }}
 
 ---
 apiVersion: extensions/v1beta1
@@ -399,6 +414,9 @@ spec:
         - name: TRACING_SAMPLING_RATE
           value: {{ .Values.traceSamplingRate | default "0.5" | quote }}
       serviceAccount: fission-svc
+{{- if .Values.extraCoreComponmentPodConfig }}
+{{ toYaml .Values.extraCoreComponmentPodConfig | indent 6 -}}
+{{- end }}
 
 ---
 apiVersion: extensions/v1beta1
@@ -437,4 +455,7 @@ spec:
           claimName: {{ .Values.persistence.existingClaim | default "fission-storage-pvc" }}
       {{- else }}
         emptyDir: {}
-      {{- end -}}
+      {{- end }}
+{{- if .Values.extraCoreComponmentPodConfig }}
+{{ toYaml .Values.extraCoreComponmentPodConfig | indent 6 -}}
+{{- end }}

charts/fission-core/values.yaml

@@ -68,6 +68,24 @@ persistence:
   accessMode: ReadWriteOnce
   size: 8Gi
 
+## Extend the container specs for the core fission pods. 
+## Can be used to add things like affinty/tolerations/nodeSelectors/etc.
+## For example:
+## extraCoreComponmentPodConfig:
+##   affinity:
+##     nodeAffinity:
+##       requiredDuringSchedulingIgnoredDuringExecution:
+##         nodeSelectorTerms:
+##           - matchExpressions:
+##             - key: capability
+##               operator: In
+##               values:
+##                 - app
+extraCoreComponmentPodConfig:
+#  affinity:
+#  tolerations:
+#  nodeSelector:
+
 ## Analytics let us count how many people installed fission. Set to
 ## false to disable analytics.
 analytics: true