text: module.exports = function (properties, env) {
      return {
          format: properties.format || '%s:%d',
          token: properties.token || '/var/run/secrets/kubernetes.io/serviceaccount/token',
          ca: properties.ca || '/var/run/secrets/kubernetes.io/serviceaccount/ca.crt',
          namespace: properties.namespace,
          pod: properties.pod,
          container: properties.container,
          port: properties.port || properties.container,
          kubernetes: properties.kubernetes ||
              env.KUBERNETES_SERVICE_HOST + ':' + env.KUBERNETES_SERVICE_PORT
      }
  }
  