Using Big Data Studio
The Big Data Studio notebook application is accessed in a browser after the following prerequisites are met.
Big Data Studio runs on the second utility node of an HA (highly-available) cluster, or on the first (and only) utility node of a non-HA cluster. Before Big Data Studio can be accessed from a browser, an administrator must:
- Make the node available to incoming connections from users. The node's private IP address can be mapped to a public IP address. Alternatively, the cluster can be set up to use a bastion host or Oracle FastConnect. See Connecting to Cluster Nodes with Private IP Addresses.
- Open port
30000on the node by configuring the ingress rules in the network security list. See Defining Security Rules.
Big Studio Default Credentials
The default admin login credentials for Big Data Studio are as follows:
Password: Apache Ambari or Cloudera Manager admin password. This is the cluster admin password that was specified when the cluster was created.
The admin creates additional users and their login credentials, and provides the login credentials to those users. See Creating and Deleting Users.
Unless explicitly referenced as some other type of administrator, the use of
"administrator" or "admin" throughout this section refers to the Big Data Studio
Accessing Big Data Studio
To access Big Data Studio directly from a browser:
- Open a browser window.
- Enter a URL in the following
- Log in with your credentials.
You can also create a load balancer to provide a secure front end for accessing services, including Big Data Studio. See Connecting to Services on a Cluster Using Load Balancer.
Additional Steps for Clusters with an Oracle-Managed Service Gateway and NAT Gateway
If your cluster is configured with an Oracle-managed service gateway and NAT gateway, a networking issue exists and you won't be able to access Big Data Studio unless additional steps are taken by an administrator. The default egress route and gateway point to the cluster subnet. You can't access Big Data Studio through your subnet IP or through a public IP added to your subnet unless you change the default from the cluster subnet gateway to your subnet gateway.
To perform these actions, you must have access rights on the cluster through the operating system.
To change the default route:
- Connect as
opcuser to the utility node where Big Data Studio resides (the second utility node of an HA (highly-available) cluster, or the first and only utility node of a non-HA cluster).
- Change to
root, confirm that you have the issue by using
route -n. The issue exists if
ens3is being used for the default route (
ens3is the interface that corresponds to the cluster subnet). For example:
$ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.0.0.1 0.0.0.0 UG 0 0 0 ens3
In this example,
10.0.0.1is the cluster subnet gateway.
- Determine the gateway for your subnet by running
route -n | grep ens5. The output will look something like this:
10.200.0.0 0.0.0.0 255.255.128.0 U 0 0 0 ens5
where the first string is the network (in this case,
10.200.0.0). The gateway is the network incremented by 1 (in this case,
- Add the new default route:
route add default gw <your-subnet-gateway> ens5
In the example above,
10.200.0.1, so the command would be:
route add default gw 10.200.0.1 ens5
- Remove the previous default route:
route del default gw <cluster-subnet-gateway>
In the example above,
10.0.0.1, so the command would be:
route del default gw 10.0.0.1
- Verify the new default route. You should see something like this:
$ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.200.0.1 0.0.0.0 UG 0 0 0 ens5
Preferences are user-defined settings that persist in your browser. You can configure personal preferences for such things as the notebook Iframe view, the paragraph panel, the graph panel, accessibility mode, and editor settings.
- Open the notebook application. See Accessing Big Data Studio.
- Click your user name in the top right, select Preferences, and then configure and save your preferences.
Overview of the User Interface
The user interface in Big Data Studio has the following main sections.
Each section is accessed from the icons on the left.
This is the home page for Big Data Studio and is the main workspace for notebooks. See Working with Notebooks.
Users can view only the notebooks they've created. Admin users can view the notebook of any user, and can set permissions to restrict notebook access and actions.
|Use this section to create and manage graphs used in notebooks. See Working with Graphs.|
Use this section to create templates that customize result formats. See Working with Templates.
Interpreters (admin only)
An administrator uses this section to configure interpreter settings that can be used across all notebooks. See Configuring Interpreters.
Tasks (admin only)
An administrator uses this section to monitor notebook activities. See Monitoring Notebook Activities .
Permissions (admin only)
An administrator uses this section to configure and manage user permissions. Permissions determine actions users can perform in Big Data Studio. See Configuring Permissions for Users.