UI access and password settings by service

Available in VPC

You can submit management tasks or applications through NAVER Cloud Platform's Cloud Hadoop console or web UI (Ambari, Hue, etc.).

Preparations

In order to access a cluster node, the following preparations need to be made in advance:

1. Set SSL VPN

SSL VPN must be set for secure access to be established from the outside to the network within NAVER Cloud Platform.
For detailed information for SSL VPN setting, see Set SSL VPN.

2. Set ACG rules

The following describes how to change the ACG rules of a cluster.

1. From the NAVER Cloud Platform console, click Services > Compute > Server > ACG, in order.
2. Select the ACG of the cluster you want to access, and click the [ACG settings] button.
   
3. Enter the 4 information items below and add an ACG Rule.
   • Protocol: TCP
   • Access source: IP of the local equipment used for SSH communication
   • Allowed port: 8443 for Ambari, and 8421 for HDFS NameNode
   • Note (optional)
     

Web UI access

You can access the web UI using DNS.

The following describes how to access the available web UIs:

1. From NAVER Cloud Platform console, click the Services > Big Data & Analytics > Cloud Hadoop menus sequentially.
2. Select the cluster to access the web UI from the cluster list, and then click the [View by application] button.
3. Click the web UI link in the remarks field from the pop-up window's web UI list.
4. Go to the NCloud login authentication page and access through the personal information consent after NCloud account login.
   

Access via private IP

Access can be made using the private IP of each node with SSL VPN turned on. Click the Quick Links from each Ambari UI menu and FQDN will be used instead of the host's private IP. Replace FQND with private IP and access.

Change password

Ambari

To set and change the Ambari UI access password click [Manage cluster] > Initialize cluster admin password menu from Cloud Hadoop console.
For more details, see Initialize cluster admin password.

Hue

The following describes how to change the password for accessing the HUE UI:

1. Run PuTTY and access the edge node via SSH. (see SSH cluster node access guide)

2. Run the command below to change the password.

   $ pwd
    /usr/hdp/3.1.0.0-78/hue/build/env/bin  # Cloud Hadoop 1.x
    /usr/nch/3.1.0.0-78/hue/build/env/bin  # Cloud Hadoop 2.x
    
   $ echo "from django.contrib.auth.models import User; 
   u = User.objects.get(username='existing user name');
   u.set_password('new password');
   u.save()
   " |  ./hue  shell
   

   Or, use the hue changepassword command as below to change the password.

   $ sudo ./hue changepassword example
   Changing password for user 'existing user name'
   Password:
   Password (again):
   Password changed successfully for user 'existing user name'
   

Zeppelin Notebook

In Cloud Hadoop, Zeppelin Notebooks are managed by Ambari.
Therefore, it is recommended to access the Ambari UI and perform tasks rather than directly accessing the cluster to change files and run scripts.

Here's how to change your Zeppelin Notebook password.

1. After accessing the Ambari UI, log in with the cluster admin account ID and password.
2. Click Zeppelin Notebook from the left-side bar.
3. Click [CONFIGS] tap at the top.
4. Click Advanced-zeppelin-shiro-ini item, and edit the password.
   
5. Click the [Save] button at the bottom right corner.
6. Click [Actions] > Restart All button at the upper right, and click [Confirm restart all].

If you follow the above sequence and access Zeppelin Notebook, you will see that the password change has been applied.