初始化功能函数库

templates/_compatibility.tpl

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+{{/* 
+检测是否为 Openshift 平台（true/false）
+调用：
+  {{- include "common.compatibility.isOpenshift" . -}}
+*/}}
+{{- define "common.compatibility.isOpenshift" -}}
+{{- if .Capabilities.APIVersions.Has "security.openshift.io/v1" -}}
+{{- true -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+根据平台渲染一个兼容的 securityContext。
+在默认情况下，它会保持原样。在其他平台（如 OpenShift）上，我们会移除那些在开箱即用的 restricted-v1 安全上下文约束（SCC）下无法正常工作的默认用户/组值。
+调用：
+  {{- include "common.compatibility.renderSecurityContext" (dict "secContext" .Values.containerSecurityContext "context" $) -}}
+*/}}
+{{- define "common.compatibility.renderSecurityContext" -}}
+{{- $adaptedContext := .secContext -}}
+
+{{- if (((.context.Values.global).compatibility).openshift) -}}
+  {{- if or (eq .context.Values.global.compatibility.openshift.adaptSecurityContext "force") (and (eq .context.Values.global.compatibility.openshift.adaptSecurityContext "auto") (include "common.compatibility.isOpenshift" .context)) -}}
+    {{/* Remove incompatible user/group values that do not work in Openshift out of the box */}}
+    {{- $adaptedContext = omit $adaptedContext "fsGroup" "runAsUser" "runAsGroup" -}}
+    {{- if not .secContext.seLinuxOptions -}}
+    {{/* If it is an empty object, we remove it from the resulting context because it causes validation issues */}}
+    {{- $adaptedContext = omit $adaptedContext "seLinuxOptions" -}}
+    {{- end -}}
+  {{- end -}}
+{{- end -}}
+{{/* Remove empty seLinuxOptions object if global.compatibility.omitEmptySeLinuxOptions is set to true */}}
+{{- if and (((.context.Values.global).compatibility).omitEmptySeLinuxOptions) (not .secContext.seLinuxOptions) -}}
+  {{- $adaptedContext = omit $adaptedContext "seLinuxOptions" -}}
+{{- end -}}
+{{/* Remove fields that are disregarded when running the container in privileged mode */}}
+{{- if $adaptedContext.privileged -}}
+  {{- $adaptedContext = omit $adaptedContext "capabilities" -}}
+{{- end -}}
+{{- omit $adaptedContext "enabled" | toYaml -}}
+{{- end -}}