func (e *remoteExec) ExecWithOptions(options ExecOptions) (string, string, error) {
	const tty = false
	req := e.restGVKClient.Post().
		Resource("pods").
		Name(options.PodName).
		Namespace(options.Namespace).
		SubResource("exec").
		Param("container", options.ContainerName)
	req.VersionedParams(&corev1.PodExecOptions{
		Container: options.ContainerName,
		Command:   options.Command,
		Stdin:     options.Stdin != nil,
		Stdout:    options.CaptureStdout,
		Stderr:    options.CaptureStderr,
		TTY:       tty,
	}, scheme.ParameterCodec)
	var stdout, stderr bytes.Buffer
	err := execute("POST", req.URL(), e.config, options.Stdin, &stdout, &stderr, tty)
	if options.PreserveWhitespace {
		return stdout.String(), stderr.String(), err
	}
	return strings.TrimSpace(stdout.String()), strings.TrimSpace(stderr.String()), err
}
ExecWithOptions executes a command in the specified container,
returning stdout, stderr and error. `options` allowed for
additional parameters to be passed.
package exec
import (
	"bytes"
	"io"
	"net/url"
	"strings"
	"github.com/go-logr/logr"
	corev1 "k8s.io/api/core/v1"
	"k8s.io/client-go/kubernetes/scheme"
	"k8s.io/client-go/rest"
	"k8s.io/client-go/tools/remotecommand"
)
type IExec interface {
	ExecCommandInPodSet(podSet []*corev1.Pod, cmd ...string) error
}
type remoteExec struct {
	restGVKClient rest.Interface
	logger        logr.Logger
	config        *rest.Config
}
func NewRemoteExec(restGVKClient rest.Interface, config *rest.Config, logger logr.Logger) IExec {
	return &remoteExec{
		restGVKClient: restGVKClient,
		logger:        logger,
		config:        config,
	}
}
type ExecOptions struct {
	Command []string
	Namespace     string
	PodName       string
	ContainerName string
	Stdin         io.Reader
	CaptureStdout bool
	CaptureStderr bool
	PreserveWhitespace bool
}
func (e *remoteExec) ExecCommandInPodSet(podSet []*corev1.Pod, cmd ...string) error {
	for _, pod := range podSet {
		if _, err := e.ExecCommandInContainer(pod.Namespace, pod.Name, pod.Spec.Containers[0].Name, cmd...); err != nil {
			return err
		}
	}
	return nil
}
func (e *remoteExec) ExecCommandInContainer(namespace, podName, containerName string, cmd ...string) (string, error) {
	stdout, stderr, err := e.ExecCommandInContainerWithFullOutput(namespace, podName, containerName, cmd...)
	if stderr != "" {
		e.logger.Info("ExecCommand", "command", cmd, "stderr", stderr)
	}
	return stdout, err
}
func (e *remoteExec) ExecCommandInContainerWithFullOutput(namespace, podName, containerName string, cmd ...string) (string, string, error) {
	return e.ExecWithOptions(ExecOptions{
		Command:       cmd,
		Namespace:     namespace,
		PodName:       podName,
		ContainerName: containerName,
		Stdin:              nil,
		CaptureStdout:      true,
		CaptureStderr:      true,
		PreserveWhitespace: false,
	})
}