Efficient Log Monitoring: Amazon CloudWatch Live Tail

Nisarg Desai
3 min readJul 2, 2023

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AWS, launched in 2006, is a comprehensive and widely used cloud computing platform provided by Amazon. It offers a broad range of scalable and cost-effective services that enable businesses and developers to build, deploy, and manage their applications and infrastructure in the cloud.

Amazon CloudWatch(CloudWatch), released in 2009, is a fully managed service by AWS that allows you to store, monitor, and access log files from various AWS resources, applications, and custom log files. CloudWatch has evolved over the years and has many features out of which I am going to take you through one of the recently released (June 6th, 2023) feature Logs Live Tail.

Photo by Markus Spiske on Unsplash

CloudWatch Logs Live Tail allows developers or system administrators to monitor log events as they happen, which can help identify problems quickly. Cross Team Members can collaborate on the same log stream which makes it easier to solve problems.

CloudWatch Logs Live Tail offers several advantages when it comes to real-time log monitoring:

  1. Immediate visibility: Live Tail provides real-time updates, allowing you to observe log events as they occur, helping to identify issues and troubleshoot problems promptly.
  2. Simplified log analysis: By streaming logs in real-time, Live Tail eliminates the need for manual log retrieval, saving time and effort.
  3. Enhanced troubleshooting: Live Tail makes it easier to identify patterns, errors, or exceptions, enabling faster issue resolution and better system performance.
  4. Centralized log management: CloudWatch Logs consolidates logs from various AWS resources, making it a central hub for log analysis and monitoring.

Setting up CloudWatch Logs Live Tail

To start using CloudWatch Logs Live Tail, follow these steps:

  1. Navigate to CloudWatch Console https://console.aws.amazon.com/cloudwatch/
CloudWatch Console

2. In the navigation pane, choose Logs, Live tail which will take you to Live Tail view.

CloudWatch Console
CloudWatch Log Tail View

3. From Log Tail View, you can select log groups that you want to view events from. It allows up to 10 log groups to tail.

4. You can further filter the Log Tail by selecting one or more log streams to monitor the log events.

Filter options of Lig Stream

5. It allows to filter events based on certain words(Case Sensitive) that log events contains. Furthermore, it highlights up to 5 keywords(Case Insensitive) with different color assigned to each word provide.

Example of filters for CloudWatch Log Live Tail

Amazon CloudWatch Logs Live Tail costs $0.01 per minute.

Amazon CloudWatch Logs Live Tail empowers customers with interactive deep-dive capabilities for their collected logs, enabling quick data exploration and analysis within the CloudWatch Logs ecosystem. This feature allows users to conveniently access and view all streaming log data from a centralized console or seamlessly integrated with their existing deployment, operation, or security investigation tools.

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Nisarg Desai
Nisarg Desai

Written by Nisarg Desai

Lead Full Stack Developer @CloudThat

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