> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sync.cdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Connecting to HDFS

export const CommonAuthSchemeNone = ({siteName = "CData Sync", siteNameShort = "Sync", datasource = "the data source"}) => {
  return <>
      <p>認証なしで接続するには、<strong>Auth Scheme</strong> で<strong>None</strong> を選択します。追加のプロパティは必要ありません。</p>
    </>;
};

export const siteName = "CData Sync";

In {siteName}, you can connect to HDFS in several ways. Select your authentication method below, then proceed to the relevant section and follow those instructions.

* [**None**](#none)
* [**Kerberos**](#kerberos)

### None

<CommonAuthSchemeNone siteName={siteName} />

After you complete this section, go to *Complete Your Connection* on the connection page to finish setting up the connection.

### Kerberos

To connect with Kerberos authentication, set the following properties:

* **Auth Scheme:** Select **Negotiate**.
* **User:** Enter the username that you use to authenticate to your HDFS instance.
* **Password:** Enter the password that you use to authenticate to your HDFS instance.
* **Kerberos KDC:** Enter the host name or IP Address of your Kerberos KDC machine.
* **Kerberos Realm:** Enter the realm used to authenticate the user.
* **Kerberos SPN:** Enter the service and host of the CSV Kerberos Principal. Find this value just before the '@' symbol of the principal value.
* (Optional) **Kerberos Keytab File:** Enter the keytab file that contains your pairs of the Kerberos principals and encrypted keys.
* (Optional) **Kerberos Service Realm:** Enter the Kerberos realm of the service.
* (Optional) **Kerberos Service KDC:** Enter the Kerberos KDC of the service.
* (Optional) **Kerberos Ticket Cache:** Enter the full file path to the Kerberos credential cache file.

After you complete this section, go to *Complete Your Connection* on the connection page to finish setting up the connection.