diff --git a/pkg/operator/ceph/object/admin.go b/pkg/operator/ceph/object/admin.go
index 67ab074a3..f26f80a62 100644
--- a/pkg/operator/ceph/object/admin.go
+++ b/pkg/operator/ceph/object/admin.go
@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"net/http"
 	"net/http/httputil"
+	"path/filepath"
 	"regexp"
 	"strings"
 
@@ -230,6 +231,31 @@ func RunAdminCommandNoMultisite(c *Context, expectJSON bool, args ...string) (st
 
 	// If Multus is enabled we proxy all the command to the mgr sidecar
 	if c.clusterInfo.NetworkSpec.IsMultus() {
+		// check if remote command arguments contains file path:
+		srcFile, dstFile := "", ""
+		for i, arg := range args {
+			if strings.HasPrefix(arg, "--infile=") {
+				srcFile = strings.TrimPrefix(arg, "--infile=")
+				// place dest file to tmp dir and update cmd argument
+				dstFile = "/tmp/" + filepath.Base(srcFile)
+				args[i] = strings.ReplaceAll(arg, srcFile, dstFile)
+			}
+		}
+		if srcFile != "" {
+			// remote command contains file as argument
+			// copy file to remote container
+			err = c.Context.RemoteExecutor.CopyLocalFileToContainer(c.clusterInfo.Context, cephclient.ProxyAppLabel, cephclient.CommandProxyInitContainerName, c.clusterInfo.Namespace, srcFile, dstFile)
+			if err != nil {
+				return "", err
+			}
+			defer func() {
+				// cleanup copied file in remote container
+				_, stdErr, cleanupErr := c.Context.RemoteExecutor.ExecCommandInContainerWithFullOutput(c.clusterInfo.Context, cephclient.ProxyAppLabel, cephclient.CommandProxyInitContainerName, c.clusterInfo.Namespace, []string{"rm", dstFile}...)
+				if cleanupErr != nil {
+					logger.Errorf("failed to cleanup remote file %q: %s - %s", dstFile, cleanupErr, stdErr)
+				}
+			}()
+		}
 		output, stderr, err = c.Context.RemoteExecutor.ExecCommandInContainerWithFullOutputWithTimeout(c.clusterInfo.Context, cephclient.ProxyAppLabel, cephclient.CommandProxyInitContainerName, c.clusterInfo.Namespace, append([]string{"radosgw-admin"}, args...)...)
 	} else {
 		command, args := cephclient.FinalizeCephCommandArgs("radosgw-admin", c.clusterInfo, args, c.Context.ConfigDir)
diff --git a/pkg/util/exec/exec_pod.go b/pkg/util/exec/exec_pod.go
index 3445472af..9ebad7f02 100644
--- a/pkg/util/exec/exec_pod.go
+++ b/pkg/util/exec/exec_pod.go
@@ -25,6 +25,7 @@ import (
 	"io"
 	"net/http"
 	"net/url"
+	"os"
 	"strconv"
 	"strings"
 
@@ -133,3 +134,33 @@ func execute(ctx context.Context, method string, url *url.URL, config *rest.Conf
 func (e *RemotePodCommandExecutor) ExecCommandInContainerWithFullOutputWithTimeout(ctx context.Context, appLabel, containerName, namespace string, cmd ...string) (string, string, error) {
 	return e.ExecCommandInContainerWithFullOutput(ctx, appLabel, containerName, namespace, append([]string{"timeout", strconv.Itoa(int(CephCommandsTimeout.Seconds()))}, cmd...)...)
 }
+
+func (e *RemotePodCommandExecutor) CopyLocalFileToContainer(ctx context.Context, appLabel, containerName, namespace string, srcPath, dstPath string) error {
+	options := metav1.ListOptions{LabelSelector: fmt.Sprintf("app=%s", appLabel)}
+	pods, err := e.ClientSet.CoreV1().Pods(namespace).List(ctx, options)
+	if err != nil {
+		return err
+	}
+	if len(pods.Items) == 0 {
+		return errors.Errorf("no pods found with selector %q", appLabel)
+	}
+	file, err := os.Open(srcPath)
+	if err != nil {
+		return fmt.Errorf("failed to open local file: %w", err)
+	}
+	defer file.Close()
+	stdOut, stdErr, err := e.ExecWithOptions(ctx, ExecOptions{
+		Command:            []string{"sh", "-c", fmt.Sprintf("cat - > %s", dstPath)},
+		Namespace:          namespace,
+		PodName:            pods.Items[0].Name,
+		ContainerName:      containerName,
+		Stdin:              file,
+		CaptureStdout:      true,
+		CaptureStderr:      true,
+		PreserveWhitespace: false,
+	})
+	if err != nil {
+		return fmt.Errorf("%w: unable to copy file, stdOut=%q, stdErr=%q", err, stdOut, stdErr)
+	}
+	return nil
+}