 | Attribute            | Mandatory  | Default Value      | Description  |
 |----------------------|------------|--------------------|--------------|
| `dns-servers` | No | `none` | Comma separated list of dns servers. Servers can either be in the `server:port` or just `server` form. Use `none` to use the system resolver. |
| `hostname` | No |  | The hostname to look up; if not defined Stork service name will be used. |
| `record-type` | No | `SRV` | Type of the DNS record. A, AAAA and SRV records are supported |
| `port` | No |  | Port of the service instances. Required if the record type is other than SRV. |
| `refresh-period` | No | `5M` | Service discovery cache refresh period. |
| `secure` | No |  | Whether the connection with the service should be encrypted with TLS. |
| `recursion-desired` | No | `true` | Whether DNS recursion is desired |
| `dns-timeout` | No | `5s` | Timeout for DNS queries |
| `fail-on-error` | No | `false` | Whether an error in retrieving service instances from one of the DNS servers should cause a failure of the discovery attempt. |
