The document discusses troubleshooting and monitoring for a web application, emphasizing log collection and analysis using the ELK stack. It highlights the process of generating diagnostic logs for HTTP requests, including detailed information for failed requests. The ELK stack is described as an open-source tool that provides near real-time search, analysis, and visualization capabilities.

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Troubleshooting and
Monitoring.
JANUARY 27, 2016
Alex Feshchenko,
SENIOR SOFTWARE ENGINEER

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AGENDA
Web App Troubleshooting1
Collecting logs2
ELK stack brief overview3
Demo4

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WEB APP
TROUBLESHOOTING
JANUARY 13, 2016

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Remote Debugging

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Diagnostic Logs
The application creates these logs by calling methods of the System.Diagnostics.Trace class.
The web server creates a log entry for every HTTP request to the web app.
The web server creates an HTML page with some additional information for failed HTTP requests
(those that result in status code 400 or greater).
The web server creates an XML file with detailed tracing information for failed HTTP requests. The
web server also provides an XSL file to format the XML in a browser.

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DEMO
JANUARY 27, 2016

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ELASTICSEARCH AS
LOGS AGGREGATOR
JANUARY 27, 2016

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What does ELK do?

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ELK components
Plumbing and glue for all your data

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ELK components
160+ connectors and transform
tools

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ELK components
Near real-time search and analysis
tool

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ELK components
Visualization and exploration

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ELK components
Horizontally scalable

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ELK components
Open source and open
community

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ELK components
Developed by
Elasticsearch, Inc

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ELK in the world

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Resources

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DEMO
JANUARY 27, 2016