Remove error output from stdout to stderr

staging/src/k8s.io/cli-runtime/pkg/genericclioptions/printers/jsonpath.go

@@ -17,6 +17,7 @@ limitations under the License.
 package printers
 
 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -136,10 +137,11 @@ func (j *JSONPathPrinter) PrintObj(obj runtime.Object, w io.Writer) error {
 	}
 
 	if err := j.JSONPath.Execute(w, queryObj); err != nil {
-		fmt.Fprintf(w, "Error executing template: %v. Printing more information for debugging the template:\n", err)
-		fmt.Fprintf(w, "\ttemplate was:\n\t\t%v\n", j.rawTemplate)
-		fmt.Fprintf(w, "\tobject given to jsonpath engine was:\n\t\t%#v\n\n", queryObj)
-		return fmt.Errorf("error executing jsonpath %q: %v\n", j.rawTemplate, err)
+		buf := bytes.NewBuffer(nil)
+		fmt.Fprintf(buf, "Error executing template: %v. Printing more information for debugging the template:\n", err)
+		fmt.Fprintf(buf, "\ttemplate was:\n\t\t%v\n", j.rawTemplate)
+		fmt.Fprintf(buf, "\tobject given to jsonpath engine was:\n\t\t%#v\n\n", queryObj)
+		return fmt.Errorf("error executing jsonpath %q: %v\n", j.rawTemplate, buf.String())
 	}
 	return nil
 }

test/cmd/get.sh

@@ -162,7 +162,7 @@ run_kubectl_get_tests() {
   kube::test::if_has_string "${output_message}" 'valid-pod:'
 
   ## check --allow-missing-template-keys=false results in an error for a missing key with jsonpath
-  output_message=$(! kubectl get pod valid-pod --allow-missing-template-keys=false -o jsonpath='{.missing}' "${kube_flags[@]}")
+  output_message=$(! kubectl get pod valid-pod --allow-missing-template-keys=false -o jsonpath='{.missing}' 2>&1 "${kube_flags[@]}")
   kube::test::if_has_string "${output_message}" 'missing is not found'
 
   ## check --allow-missing-template-keys=false results in an error for a missing key with go