// Notify all other MinIO peers signal service.
	for _, nerr := range globalNotificationSys.SignalService(serviceRestart) {
		if nerr.Err != nil {
			logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
			adminLogIf(ctx, nerr.Err)
		}
	}

	globalServiceSignalCh <- serviceRestart
}

// ServiceHandler - POST /minio/admin/v3/service?action={action}
// ----------

	if accessKey == "" {
		return np, grid.NewRemoteErr(errors.New("service account name is missing"))
	}

	if err := globalIAMSys.DeleteServiceAccount(context.Background(), accessKey, false); err != nil {
		return np, grid.NewRemoteErr(err)
	}

	return
}

// LoadServiceAccountHandler - reloads a service account on the server.

	date := sumHMAC([]byte("AWS4"+secretKey), []byte(currTime.Format(yyyymmdd)))
	region := sumHMAC(date, []byte(globalMinioDefaultRegion))
	service := sumHMAC(region, []byte(string(serviceS3)))
	signingKey := sumHMAC(service, []byte("aws4_request"))

	signature := hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))

	// final Authorization header
	parts := []string{

	// Permission checks:
	//
	// 1. Any type of account (i.e. access keys (previously/still called service
	// accounts), STS accounts, internal IDP accounts, etc) with the
	// policy.UpdateServiceAccountAdminAction permission can update any service
	// account.
	//
	// 2. We would like to let a user update their own access keys, however it

	name, description          string
	expiration                 *time.Time
	allowSiteReplicatorAccount bool // allow creating internal service account for site-replication.

	claims map[string]interface{}
}

// NewServiceAccount - create a new service account
func (sys *IAMSys) NewServiceAccount(ctx context.Context, parentUser string, groups []string, opts newServiceAccountOpts) (auth.Credentials, time.Time, error) {

		if scred.ParentUser != parentUser {
			return updatedAt, fmt.Errorf("%w: the service account access key is taken by another user", errIAMServiceAccountNotAllowed)
		}
		return updatedAt, fmt.Errorf("%w: the service account access key already taken", errIAMServiceAccountNotAllowed)
	}

	// Parent user must not be a service account.
	if u, found := cache.iamUsersMap[parentUser]; found && u.Credentials.IsServiceAccount() {

topic*               (string)    name of the MQTT topic to publish
username             (string)    MQTT username
password             (string)    MQTT password
qos                  (number)    set the quality of service priority, defaults to '0'
keep_alive_interval  (duration)  keep-alive interval for MQTT connections in s,m,h,d
reconnect_interval   (duration)  reconnect interval for MQTT connections in s,m,h,d

		Description:    "Error parsing the Credential/X-Amz-Credential parameter; incorrect service. This endpoint belongs to \"s3\".",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInvalidServiceSTS: {
		Code:           "AuthorizationParametersError",
		Description:    "Error parsing the Credential parameter; incorrect service. This endpoint belongs to \"sts\".",
		HTTPStatusCode: http.StatusBadRequest,
	},

	encodedSuccessResponse := encodeResponse(response)

	// write success response.
	writeSuccessResponseXML(w, encodedSuccessResponse)
}

// ListBucketsHandler - GET Service.
// -----------
// This implementation of the GET operation returns a list of all buckets
// owned by the authenticated sender of the request.

	// 3. Check S3 access
	c.assertSvcAccS3Access(ctx, s, cr, bucket)

	// 5. Check that service account can be deleted.
	c.assertSvcAccDeletion(ctx, s, userAdmClient, value.AccessKeyID, bucket)

	// 6. Check that service account cannot be created for some other user.
	c.mustNotCreateSvcAccount(ctx, globalActiveCred.AccessKey, userAdmClient)
}