How to reload static configuration

traefik version 2.1.6
Start up traefik use ./traefik -f traefik.toml

How to hot loading static config? such as entrypoints, metrics, accesslog, log.
When the static config was changed , I expect to hot loading it, make sure my service is uninterrupted.

traefik.toml

[global]
  checkNewVersion = true
  sendAnonymousUsage = true
[api]
  insecure = true
[entrypoints]
  [entrypoints.web]
    Address = ":8000"
    [entryPoints.web.transport]
      [entryPoints.web.transport.respondingTimeouts]
        readTimeout = 42
  [entrypoints.websecure]
    Address = ":4443"
    [entryPoints.websecure.proxyProtocol]
      insecure = true
  [entrypoints.traefik]
    address = ":8086"
  [entrypoints.traefik]
    address = "127.0.0.1:8083"

[metrics]
  [metrics.prometheus]
    addEntryPointsLabels = true
    addServicesLabels = true
    entryPoint = "traefik"
[accesslog]
  filepath = "/data/log/traefik_access.log"
  bufferingSize = 100
  format = "json"
[log]
  level = "INFO"
  filePath = "/data/log/traefik_log.log"
  format = "json"