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Learning Apache Cassandra

You're reading from   Learning Apache Cassandra Managing fault-tolerant, scalable data with high performance

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Product type Paperback
Published in Apr 2017
Publisher
ISBN-13 9781787127296
Length 360 pages
Edition 2nd Edition
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Concepts
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Author (1):
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Sandeep Yarabarla Sandeep Yarabarla
Author Profile Icon Sandeep Yarabarla
Sandeep Yarabarla
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Table of Contents (15) Chapters Close

Preface 1. Getting Up and Running with Cassandra FREE CHAPTER 2. The First Table 3. Organizing Related Data 4. Beyond Key-Value Lookup 5. Establishing Relationships 6. Denormalizing Data for Maximum Performance 7. Expanding Your Data Model 8. Collections, Tuples, and User-Defined Types 9. Aggregating Time-Series Data 10. How Cassandra Distributes Data 11. Cassandra Multi-Node Cluster 12. Application Development Using the Java Driver 13. Peeking under the Hood 14. Authentication and Authorization

Authorization in action

Now that we know how to create user accounts and grant and revoke permissions to them, let's see how a non-superuser account behaves in practice. To do this, let's open up a new cqlsh session logged in with our data analytics team's account:

$ cqlsh -u data_analytics -p verystrongpassword -k my_status

The -k my_status option simply tells cqlsh that we want to interact with the my_status keyspace, saving us the effort of issuing a USE statement.

Now let's see what we can do. First, we expect to be able to read data with no problem; let's have a look at the user_status_updates table:

SELECT * FROM user_status_updates; 

As expected, we have permission to read the contents of that table:

Now let's try making a change to some data. Though our analytics team certainly would have no malicious intent, perhaps at some point the analytics cat may sit
on a keyboard,...

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