嵌套模板头盔

Question

我正在解决使用自定义 configMap 实现 helm chart 并尝试根据环境模式填充 configMap 的问题。

Values.yaml

externalIPService:
 ip: 1.1.1.1
 port:  80 

emsConfig: "receivers:
 otlp:
   protocols:
     http:
processors:
 batch:
exporters:
 otlp/ems:
   endpoint: {{ .Values.externalIPService.ip }}:{{ .Values.externalIPService.port }}
service:
 pipelines:
   traces:
     receivers: [otlp]
     processors: [batch]
     exporters: [otlp/ems]
   metrics:
     receivers: [otlp]
     processors: [batch]
     exporters: [otlp/ems]
   logs:
     receivers: [otlp]
     processors: [batch]
     exporters: [otlp/ems]
"

configMap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: simple-demo
data:
  message: "{{ tpl .Values.emsConfig .}}"

helm 模板输出是纯字符串而不是 yaml 内容。我也试过 toYaml 但它也没有帮助。有人可以帮忙找到一种方法来进行嵌套渲染并能够在 confiMap

中使用最终输出吗

apiVersion: v1
kind: ConfigMap
metadata:
  name: simple-demo
data:
  message: "receivers: otlp: protocols: http: processors: batch: exporters: otlp/ems: endpoint: {{ .Values.externalIPService.ip }}:{{ .Values.externalIPService.port }} service: pipelines: traces: receivers: [otlp] processors: [batch] exporters: [otlp/ems] metrics: receivers: [otlp] processors: [batch] exporters: [otlp/ems] logs: receivers: [otlp] processors: [batch] exporters: [otlp/ems] "

Answer 1

在这种情况下，您需要使用 _halpers.tpl 文件。

首先，将其添加到 _halpers.tpl 文件中：

{{- define "appname.emsConfig" -}}
receivers:
 otlp:
   protocols:
     http:
processors:
 batch:
exporters:
 otlp/ems:
   endpoint: {{ .Values.externalIPService.ip }}:{{ .Values.externalIPService.port }}
service:
 pipelines:
   traces:
     receivers: [otlp]
     processors: [batch]
     exporters: [otlp/ems]
   metrics:
     receivers: [otlp]
     processors: [batch]
     exporters: [otlp/ems]
   logs:
     receivers: [otlp]
     processors: [batch]
     exporters: [otlp/ems]
{{- end }}

values.yaml 文件将如下所示：

externalIPService:
 ip: 1.1.1.1
 port:  80

和 configMap.yaml 文件需要如下所示：

apiVersion: v1
kind: ConfigMap
metadata:
  name: simple-demo
data:
  message: |-
  {{ include "appname.emsConfig" . | nindent 4}}

嵌套模板头盔

Nested templating helm

kubernetes

kubernetes-helm

helm3