Merge pull request #2641 from jijiew/doc

doc for kustomize config delete setter

cmd/config/docs/commands/delete-setter.md

@@ -0,0 +1,65 @@
+## delete-setter
+
+[Alpha] Delete a custom setter for a Resource field
+
+### Synopsis
+
+Delete a custom setter for a Resource field.
+
+  DIR
+
+    A directory containing Resource configuration.
+
+  NAME
+
+    The name of the setter to create.
+
+### Deleting a Custom Setter
+
+**Given the YAML:**
+
+    # resource.yaml
+    apiVersion: v1
+    kind: Service
+    metadata:
+      ...
+    spec:
+      ...
+      ports:
+        ...
+      - name: http
+        port: 8080  # {"type":"integer","x-kustomize":{"partialFieldSetters":[{"name":"http-port","value":"8080"}]}}
+        ...
+
+**Delete setter:**
+
+    # delete a setter for ports
+    $ kustomize cfg set create DIR/ http-port
+
+comment will be removed for this field is not settable any more.
+
+**Newly modified YAML:**
+
+    # resource.yaml
+    apiVersion: v1
+    kind: Service
+    metadata:
+      ...
+    spec:
+      ...
+      ports:
+        ...
+      - name: http
+        port: 8080
+        ...
+
+
+### Deleting a setter used in substitution
+
+If the setter is also used in substitution, it will ask you to delete the substitution first.
+
+
+### Examples
+
+    # delete a setter for port
+    kustomize cfg create-setter DIR/ port

cmd/config/internal/commands/cmddeletesetter.go

@@ -6,6 +6,7 @@ package commands
 import (
 	"github.com/spf13/cobra"
 	"sigs.k8s.io/kustomize/cmd/config/ext"
+	"sigs.k8s.io/kustomize/cmd/config/internal/generateddocs/commands"
 	"sigs.k8s.io/kustomize/kyaml/openapi"
 	"sigs.k8s.io/kustomize/kyaml/setters2/settersutil"
 )
@@ -16,9 +17,9 @@ func NewDeleteSetterRunner(parent string) *DeleteSetterRunner {
 	c := &cobra.Command{
 		Use:     "delete-setter DIR NAME",
 		Args:    cobra.MinimumNArgs(2),
-		Short:   "delete values on Resources fields.",
-		Long:    "",
-		Example: "",
+		Short:   commands.DeleteSetterShort,
+		Long:    commands.DeleteSetterLong,
+		Example: commands.DeleteSetterExamples,
 		PreRunE: r.preRunE,
 		RunE:    r.runE,
 	}

cmd/config/internal/generateddocs/commands/docs.go

@@ -89,6 +89,22 @@ var CreateSetterExamples = `
     kustomize cfg create-setter DIR/ image-tag v1.0.1 --type "string" \
         --field image --description "current stable release"`
 
+var DeleteSetterShort = `[Alpha] Delete a custom setter for a Resource field`
+var DeleteSetterLong = `
+Delete a custom setter for a Resource field.
+
+  DIR
+
+    A directory containing Resource configuration.
+
+  NAME
+
+    The name of the setter to create.
+`
+var DeleteSetterExamples = `
+    # delete a setter for port
+    kustomize cfg create-setter DIR/ port`
+
 var FmtShort = `[Alpha] Format yaml configuration files.`
 var FmtLong = `
 [Alpha] Format yaml configuration files.