---
title: "Access Ambari Quick Link web based on Knox authentication"
slug: "secure-hadoop-use-4"
updated: 2026-09-17T09:18:17Z
published: 2026-09-17T09:18:17Z
canonical: "guide.ncloud-docs.com/secure-hadoop-use-4"
stale: true
---

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

# Access Ambari Quick Link web based on Knox authentication

Available in VPC

In Secure Hadoop, the services in the following list can be accessed through Ambari Quick Link to the web UI. There is no authentication process by default, so these services are configured to authenticate using Knox.

| Services | Cluster add-on | Application Web | Application Web Reference Site |
| --- | --- | --- | --- |
| Ranger | Provided by default | Ranger Admin | [https://ranger.apache.org/](https://ranger.apache.org/) |
| HDFS | Provided by default | Namenode | [https://hadoop.apache.org/](https://hadoop.apache.org/) |
| Yarn | Provided by default | Yarn Timeline Server, Yarn Resource Manager | [https://hadoop.apache.org/](https://hadoop.apache.org/) |
| MapReduce2 | Provided by default | JobHistory UI | [https://hadoop.apache.org/](https://hadoop.apache.org/) |
| Oozie | Provided by default | Oozie | [https://oozie.apache.org/](https://oozie.apache.org/) |
| Spark | Provided by default | Spark History | [https://spark.apache.org/](https://spark.apache.org/) |
| HBase | HBase | HBase Master | [https://hbase.apache.org/](https://hbase.apache.org/) |

The list of services that require Knox authentication upon access and the quick links are as follows: ![chadoop_knox_secure_ko.png](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/chadoop_knox_secure_en.png?sv=2026-02-06&spr=https&st=2026-10-27T18%3A37%3A02Z&se=2026-10-27T19%3A37%3A02Z&sr=c&sp=r&sig=p8RwT%2Fu6lraQ2PpOEvwzJaobG3OtmsyWhtcQBK7zPrE%3D)

1. For the consent to proceed, click **[Advanced]** or **[Advanced]** and then click **Accept the Risk and Continue** or **Accept the Risk and Continue**.  

![chadoop_knox_secure_2_ko.png](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/chadoop_knox_secure_2_en.png?sv=2026-02-06&spr=https&st=2026-10-27T18%3A37%3A02Z&se=2026-10-27T19%3A37%3A02Z&sr=c&sp=r&sig=p8RwT%2Fu6lraQ2PpOEvwzJaobG3OtmsyWhtcQBK7zPrE%3D)
2. Enter the user account of the Knox authentication page and Kerberos password.  

![chadoop_knox_secure_3_ko.png](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/chadoop_knox_secure_3_en.png?sv=2026-02-06&spr=https&st=2026-10-27T18%3A37%3A02Z&se=2026-10-27T19%3A37%3A02Z&sr=c&sp=r&sig=p8RwT%2Fu6lraQ2PpOEvwzJaobG3OtmsyWhtcQBK7zPrE%3D)
3. Access Web UI using quick links.  

![chadoop_knox_secure_4_ko.png](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/chadoop_knox_secure_4_en.png?sv=2026-02-06&spr=https&st=2026-10-27T18%3A37%3A02Z&se=2026-10-27T19%3A37%3A02Z&sr=c&sp=r&sig=p8RwT%2Fu6lraQ2PpOEvwzJaobG3OtmsyWhtcQBK7zPrE%3D)