well-defined vars that were never replaced: EXTERNAL_IP

[dove-young]

Hit error when refer to ConfigMap data in vars. And it seems like this error only happen to EXTERNAL_IP variable. EXTERNAL_PORT variable does not fails.

Here is my kustomization.yaml

cat base/kustomization.yaml
resources:
- nodejsapp-service.yml

configMapGenerator:
- name: nodejs-test-cm
  literals:
    - branch=develop
    - build=20191025
    - external_ip=10.0.0.3
    - external_port=3000

vars:
- name: EXTERNAL_IP
  objref:
    kind: ConfigMap
    name: nodejs-test-cm
    apiVersion: v1
  fieldref:
    fieldpath: data.external_ip
- name: EXTERNAL_PORT
  objref:
    kind: ConfigMap
    name: nodejs-test-cm
    apiVersion: v1
  fieldref:
    fieldpath: data.external_port

cat base/nodejsapp-service.yml
apiVersion: v1
kind: Service
metadata:
  name: "nodejs-test"
  labels:
    service: "nodejs-test"
spec:
  ports:
  - name: client-connect
    port: "$(EXTERNAL_PORT)"
    targetPort: 3000
  selector:
    app: "nodejs-test"
  type: ClusterIP
  externalIPs:
  - "$(EXTERNAL_IP)"

kustomize build base
2019/11/04 23:54:38 well-defined vars that were never replaced: EXTERNAL_IP
apiVersion: v1
data:
  branch: develop
  build: "20191025"
  external_ip: 10.0.0.3
  external_port: "3000"
kind: ConfigMap
metadata:
  name: nodejs-test-cm-g97k2f5dmt
---
apiVersion: v1
kind: Service
metadata:
  labels:
    service: nodejs-test
  name: nodejs-test
spec:
  externalIPs:
  - $(EXTERNAL_IP)
  ports:
  - name: client-connect
    port: "3000"
    targetPort: 3000
  selector:
    app: nodejs-test
  type: ClusterIP

here is kustomize version

 kustomize version
Version: {Version:kustomize/v3.3.0 GitCommit:7050c6a7b692fdba6e831e63c7b83920ab03ad76 BuildDate:2019-10-24T17:54:30Z GoOs:linux GoArch:amd64}

[jbrette]

you are just missing the varreference. check here

[harshalkwagh]

@jbrette Even after adding proper varReference variable replacement is inconstant

I am trying to replace few values in my deployment with variables. In some cases variable replacements is working properly but some of the cases its not replacing variables at all.
Example details are as below.

deployment.yaml:

---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  labels:
    app: dkube-ui
    ksonnet.io/component: dkube-ui
  name: dkube-ui-$(verTag)
  namespace: dkube
spec:
  selector:
    matchLabels:
      app: dkube-ui
  template:
    metadata:
      labels:
        app: dkube-ui
    spec:
      containers:
      - command:
        - bash
        - -c
        - "echo \"Hello World\""
        image: dkubeUIImage
        imagePullPolicy: IfNotPresent
        name: main
        ports:
        - containerPort: 3000
          name: ui
          protocol: TCP
      dnsConfig:
        options:
        - name: single-request-reopen
        - name: timeout
          value: "30"
      imagePullSecrets:
      - name: $(dkubeDockerSecret)
      nodeSelector: NODE_SELECTOR

Params.env:

verTag=1-4-1
dkubeDockerSecret=dkube-dockerhub-secret

Params.yaml:

varReference:
- path: spec/template/spec
  kind: Deployment
- path: metadata
  kind: Deployment

kustomize.yaml:

resources:
- deployment.yaml
configMapGenerator:
- name: dkube-ui-config
  env: params.env
generatorOptions:
  disableNameSuffixHash: true
images:
- name: dkubeUIImage
  newName: docker.io/ocdr/dkube-uiserver
  newTag: 1.4.2
vars:
- name: verTag
  objref:
    kind: ConfigMap
    name: dkube-ui-config
    apiVersion: v1
  fieldref:
    fieldpath: data.verTag
- name: dkubeDockerSecret
  objref:
    kind: ConfigMap
    name: dkube-ui-config
    apiVersion: v1
  fieldref:
    fieldpath: data.dkubeDockerSecret
configurations:
- params.yaml

config-map.yaml:

apiVersion: v1
kind: ConfigMap
metadata:
  name: dkube-ui-config
  namespace: dkube
data:
  config: |
    {
    verTag: $(verTag),
    dkubeDockerSecret: $(dkubeDockerSecret)
    }

Here i am replacing 2 variables in my deployment, namely verTag and dkubeDockerSecret
verTag is getting replaced properly but dkubeDockerSecret is not getting replaced.

$ kustomize build

2019/12/20 16:00:23 well-defined vars that were never replaced: dkubeDockerSecret
apiVersion: v1
data:
  clusterDomain: cluster.local
  dkubeDockerSecret: dkube-dockerhub-secret
  verTag: 1-4-1
kind: ConfigMap
metadata:
  name: dkube-ui-config
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  labels:
    app: dkube-ui
    ksonnet.io/component: dkube-ui
  name: dkube-ui-1-4-1
  namespace: dkube
spec:
  selector:
    matchLabels:
      app: dkube-ui
  template:
    metadata:
      labels:
        app: dkube-ui
    spec:
      containers:
      - command:
        - bash
        - -c
        - echo "Hello World"
        image: docker.io/ocdr/dkube-uiserver:1.4.2
        imagePullPolicy: IfNotPresent
        name: main
        ports:
        - containerPort: 3000
          name: ui
          protocol: TCP
      dnsConfig:
        options:
        - name: single-request-reopen
        - name: timeout
          value: "30"
      imagePullSecrets:
      - name: $(dkubeDockerSecret)
      nodeSelector: NODE_SELECTOR

Can you please help me in understanding the problem and resolve it.

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