Add config for fetcher resource requests & limits (#1489)

This PR adds fetcher resource requests&limits chart setting 
and remove unreasonable limits value from the charts.

charts/fission-core/templates/deployment.yaml

@@ -210,7 +210,9 @@ spec:
         args: ["--executorPort", "8888", "--namespace", "{{ .Values.functionNamespace }}"]
         env:
         - name: FETCHER_IMAGE
-          value: "{{ .Values.fetcherImage }}:{{ .Values.fetcherImageTag }}"
+          value: "{{ .Values.fetcher.image }}:{{ .Values.fetcher.imageTag }}"
+        - name: RUNTIME_IMAGE_PULL_POLICY
+          value: "{{ .Values.pullPolicy }}"
         - name: FETCHER_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
         - name: TRACE_JAEGER_COLLECTOR_ENDPOINT
@@ -222,13 +224,13 @@ spec:
         - name: ENABLE_ISTIO
           value: "{{ .Values.enableIstio }}"
         - name: FETCHER_MINCPU
-          value: {{ .Values.fetcherMinCpu | default "10m" | quote }}
+          value: {{ .Values.fetcher.resource.cpu.requests | quote }}
         - name: FETCHER_MINMEM
-          value: {{ .Values.fetcherMinMem | default "16Mi" | quote }}
+          value: {{ .Values.fetcher.resource.mem.requests | quote }}
         - name: FETCHER_MAXCPU
-          value: {{ .Values.fetcherMaxCpu | default "1000m" | quote }}
+          value: {{ .Values.fetcher.resource.cpu.limits | quote }}
         - name: FETCHER_MAXMEM
-          value: {{ .Values.fetcherMaxMem | default "128Mi" | quote }}          
+          value: {{ .Values.fetcher.resource.mem.limits | quote }}
         readinessProbe:
           httpGet:
             path: "/healthz"
@@ -278,7 +280,7 @@ spec:
         args: ["--builderMgr", "--storageSvcUrl", "http://storagesvc.{{ .Release.Namespace }}", "--envbuilder-namespace", "{{ .Values.builderNamespace }}"]
         env:
         - name: FETCHER_IMAGE
-          value: "{{ .Values.fetcherImage }}:{{ .Values.fetcherImageTag }}"
+          value: "{{ .Values.fetcher.image }}:{{ .Values.fetcher.imageTag }}"
         - name: FETCHER_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
         - name: BUILDER_IMAGE_PULL_POLICY
@@ -290,13 +292,13 @@ spec:
         - name: ENABLE_ISTIO
           value: "{{ .Values.enableIstio }}"
         - name: FETCHER_MINCPU
-          value: {{ .Values.fetcherMinCpu | default "10m" | quote }}
+          value: {{ .Values.fetcher.resource.cpu.requests | quote }}
         - name: FETCHER_MINMEM
-          value: {{ .Values.fetcherMinMem | default "16Mi" | quote }}
+          value: {{ .Values.fetcher.resource.mem.requests | quote }}
         - name: FETCHER_MAXCPU
-          value: {{ .Values.fetcherMaxCpu | default "1000m" | quote }}
+          value: {{ .Values.fetcher.resource.cpu.limits | quote }}
         - name: FETCHER_MAXMEM
-          value: {{ .Values.fetcherMaxMem | default "128Mi" | quote }}          
+          value: {{ .Values.fetcher.resource.mem.limits | quote }}
       serviceAccountName: fission-svc
 {{- if .Values.extraCoreComponentPodConfig }}
 {{ toYaml .Values.extraCoreComponentPodConfig | indent 6 -}}

charts/fission-core/values.yaml

@@ -22,12 +22,6 @@ imageTag: 1.7.1
 ## Image pull policy
 pullPolicy: IfNotPresent
 
-## Fission fetcher repository
-fetcherImage: fission/fetcher
-
-## Fission fetcher image version
-fetcherImageTag: 1.7.1
-
 ## Port at which Fission controller service should be exposed
 controllerPort: 31313
 
@@ -45,6 +39,23 @@ builderNamespace: fission-builder
 ## Enable istio integration
 enableIstio: false
 
+fetcher:
+  ## Fetcher repository
+  image: fission/fetcher
+  ## Fetcher image version
+  imageTag: 1.7.1
+  
+  ## Fetcher is only for to downloading or uploading archive.
+  ## Normally, you don't need to change the value here, unless necessary.
+  resource:
+    cpu:
+      requests: "10m"
+      ## Low CPU limits will increases the function specialization time.
+      limits: ""
+    mem:
+      requests: "16Mi"
+      limits: ""
+
 executor:
   adoptExistingResources: false