Question

Is there a way to get the YAML manifest file of a configmap, without creating the corresponding Kubernetes resource?

At the moment I'm doing this:

kubectl create configmap <name> --from-file="<name>"kubectl get configmap <name> -o yaml > <name>.yamlkubectl delete configmap <name>

Is there some simple way to achieve this without having to create a temporary resource in the Kubernetes cluster?

Example

Directory structure:

myheader/+- handler.lua+- schema.lua

File handler.lua:

local MyHeader = {}MyHeader.PRIORITY = 1000MyHeader.VERSION = "1.0.0"function MyHeader:header_filter(conf)  -- do custom logic here  kong.response.set_header("myheader", conf.header_value)endreturn MyHeader

File schema.lua:

return {  name = "myheader",  fields = {    {      config = {        type = "record",        fields = {          {            header_value = {              type = "string",              default = "roar",            },          },        },      },    },  }}

I can obtain the manifest file myheader-configmap.yaml like this:

kubectl create configmap myheader --from-file "myheader/"kubectl get configmap myheader -o yaml > myheader-configmap.yamlkubectl delete configmap myheader

Is there some command or anything else to obtain the same manifest file, without having to preemptively create the corresponding Kubernetes resource?