Question

目前，我正在通过执行以下操作从文件config.json创建一个configmap：

kubectl create configmap jksconfig --from-file=config.json

我希望在部署过程中<创建>创建，并尝试这样做：

apiVersion: v1
kind: ConfigMap
metadata:
  name: jksconfig
data:
  config.json: |-
    {{ .Files.Get "config.json" | indent 4 }}

但似乎不起作用。应该怎么做才能进入configmap.yaml，以便创建相同的configmap？

---更新---

当我进行空运行头盔安装时：

# Source: mychartv2/templates/jks-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: jksconfig
data:
  config.json: |

注意：我正在使用minikube作为我的kubernetes集群

Answer 1

您的config.json文件应位于您的 mychart / 目录中，而不应位于 mychart / templates

Chart Template Guide

configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .Release.Name }}-configmap
data:
  config.json: |-
{{ .Files.Get "config.json" | indent 4}}

config.json

{
    "val": "key"
}

helm install --dry-run --debug mychart

[debug] Created tunnel using local port: '52091'     

[debug] SERVER: "127.0.0.1:52091"                    

...           

NAME:   dining-saola                                 
REVISION: 1                                          
RELEASED: Fri Nov 23 15:06:17 2018                   
CHART: mychart-0.1.0                                 
USER-SUPPLIED VALUES:                                
{}                                                   

...

---                                                  
# Source: mychart/templates/configmap.yaml           
apiVersion: v1                                       
kind: ConfigMap                                      
metadata:                                            
  name: dining-saola-configmap                       
data:                                                
  config.json: |-                                    
    {                                                
        "val": "key"                                 
    }

编辑：

但是我希望config.json文件中的值取自values.yaml。有可能吗？

configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .Release.Name }}-configmap
data:
  config.json: |-
    {
{{- range $key, $val := .Values.json }}
{{ $key | quote | indent 6}}: {{ $val | quote }}
{{- end}}
    }

values.yaml

json:
  key1: val1
  key2: val2
  key3: val3

helm install --dry-run --debug mychart

# Source: mychart/templates/configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: mangy-hare-configmap
data:
  config.json: |-
    {
      "key1": "val1"
      "key2": "val2"
      "key3": "val3"
    }

Answer 2

Soln 01：

将您的config.json文件内容插入模板
然后将模板用于data对您的config.json
然后运行$ helm install命令

最后，

{{define "config"}}
{
    "a": "A",
    "b": {
        "b1": 1
    }
}
{{end}}

apiVersion: v1
kind: ConfigMap
metadata:
  name: jksconfig
  labels:
    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
    app: "my-app"
    heritage: "{{ .Release.Service }}"
    release: "{{ .Release.Name }}"
data:
  config.json: {{ (include "config" .) | trim | quote }}

Answer 3

以下是ConfigMap附加到Deployment的示例：

ConfigMap：

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: jksconfig
data:
  config.json: |-
{{ .Files.Get "config.json" | indent 4 }}

部署：

---
apiVersion: apps/v1beta2
kind: Deployment
metadata:
  name: jksapp
  labels:
    app: jksapp
spec:
  selector:
    matchLabels:
      app: jksapp
  template:
    metadata:
      labels:
        app: jksapp
      containers:
        - name: jksapp
          image: jksapp:1.0.0
          ports:
            - containerPort: 8080
          volumeMounts:
            - name: jksconfig
              mountPath: /path/to/config.json
      volumes:
        - name: config
          configMap:
            name: jksconfig

Kubernetes-如何定义使用Yaml中的文件构建的ConfigMap？

3 个答案: