Luna and Third Party Tools for Troubleshooting Web Application Issues

In today's fast-paced and hyper-connected world, solving web-application issues quickly is critical for any business. If a web app is down even for a moment, it can lead to lost revenue and customers. While Akamai services and support teams are a fantastic troubleshooting resource, many issues can be quickly solved by customers themselves. In this session, you'll learn the tips and tricks for troubleshooting using Luna and third-party tools, giving you the power to quickly identify and resolve web application issues on your own.

Transcript

1. © AKAMAI - EDGE 2017 Luna and Third Party Tools for Troubleshooting Web Application Issues
2. © AKAMAI - EDGE 2017 Luna and Third Party Tools for Troubleshooting Web Application Issues Solutions Architect, Lead Sharath Rao Product Support Engineer Vladimir Sidorov Technical Support Engineer II Blaž Vizjak
3. © AKAMAI - EDGE 2017 Agenda Luna troubleshooting tools • Network debugging tools • Service debugging tools Pragma headers Third party troubleshooting tools Use cases
4. © AKAMAI - EDGE 2017 Luna Diagnostic Tools
5. © AKAMAI - EDGE 2017 Luna troubleshooting tools Network debugging tools
6. © AKAMAI - EDGE 2017 Network debugging tools Get User IP Details Allows you to create a custom URL to send to the end user to collect: • their IP address • DNS nameserver IP address • edge server IP address
7. © AKAMAI - EDGE 2017 Network debugging tools View User IP Details Allows you to view collected data from Get User IP Details tool
8. © AKAMAI - EDGE 2017 Network debugging tools Verify Akamai IP Check if an IP address belongs to Akamai
9. © AKAMAI - EDGE 2017 Network debugging tools Locate IP Locate any IP address
10. © AKAMAI - EDGE 2017 Network debugging tools Get Domain Details (DIG) Resolve a hostname from a different locations
11. © AKAMAI - EDGE 2017 Network debugging tools Test Network Connectivity (MTR) Perform traceroute from an Akamai server
12. © AKAMAI - EDGE 2017 Luna troubleshooting tools Service debugging tools
13. © AKAMAI - EDGE 2017 Service debugging tools Translate an Akamaized URL Get basic information from the URL • Origin server • CP Code • Cache TTL
14. © AKAMAI - EDGE 2017 Service debugging tools Translate Error String Translate error string to fetch error summary and logs
15. © AKAMAI - EDGE 2017 Service debugging tools Request Content (CURL) Perform a cURL command from an Akamai server
16. © AKAMAI - EDGE 2017 Service debugging tools View Logs (GREP) Retrieve logs from Akamai server
17. © AKAMAI - EDGE 2017 Service debugging tools Debug URL Perform a cURL command from an Akamai server
18. © AKAMAI - EDGE 2017 Service debugging tools Get Error Statistics Real-time error statistics
19. © AKAMAI - EDGE 2017 Akamai Pragma headers
20. © AKAMAI - EDGE 2017 Pragma headers allow to get an extra information about the request. $ curl -L -D - -o /dev/null -s -XGET -H "Pragma: akamai-x-cache- on, akamai-x-cache-remote-on, akamai-x-check-cacheable, akamai-x- get-cache-key, akamai-x-get-true-cache-key, akamai-x-get- extracted-values, akamai-x-get-ssl-client-session-id, akamai-x- serial-no, akamai-x-get-request-id, x-akamai-logging-mode: verbose" https://www.example.com Pragma headers allow to get an extra information about the request. $ curl -L -D - -o /dev/null -s -XGET -H "Pragma: akamai-x-cache- on, akamai-x-cache-remote-on, akamai-x-check-cacheable, akamai-x- get-cache-key, akamai-x-get-true-cache-key, akamai-x-get- extracted-values, akamai-x-get-ssl-client-session-id, akamai-x- serial-no, akamai-x-get-request-id, x-akamai-logging-mode: verbose" https://www.example.com Akamai pragma headers
21. © AKAMAI - EDGE 2017 Akamai pragma headers Pragma Request Header Value Response Header Description Response Header Example akamai-x-cache-on X-Cache Describes if the object was served from cache and the IP address of the Akamai server X-Cache: TCP_MISS from a23-50-49- 4.deploy.akamaitechnol ogies.com (AkamaiGHost/9.1.0.2- 20871891) (-) akamai-x-check- cacheable X-Cache-Cacheable YES or NO response whether the object can be cached or not X-Check- Cacheable: YES akamai-x-get- cache-key X-Cache-Key Describes unique identifier for the object being requested X-Cache-Key: /D/123/654321/1d/ origin.example.co m/index.html
22. © AKAMAI - EDGE 2017 Akamai pragma headers Pragma Request Header Value Response Header Description Response Header Example akamai-x-get- extracted-values X-Akamai-Session- Info Describes any variables that were set in metadata X-Akamai-Session- Info: name=AKA_PM_TD_EN ABLED; value=false akamai-x-get- request-id X-Akamai-Request- ID Unique request ID to find request’s log line X-Akamai-Request- ID: 3301b2
23. © AKAMAI - EDGE 2017 Third party troubleshooting tools
24. © AKAMAI - EDGE 2017 Third party troubleshooting tools MTR My traceroute Traceroute Tracert Windows trace route tool
25. © AKAMAI - EDGE 2017 Third party troubleshooting tools CURL Command line tool for getting or sending files using URL syntax DIG Command line tool for querying DNS servers
26. © AKAMAI - EDGE 2017 Third party troubleshooting tools Charles Proxy HTTP debugging proxy server application
27. © AKAMAI - EDGE 2017 Use cases
28. © AKAMAI - EDGE 2017 Use cases Unexpected Behavior: • no response to a request • response not getting cached Useful tools: • Get Domain Details (DIG) • Verify Akamai IP Connectivity issues: • dropped packets • higher latency Useful tools: • Test Network Connectivity (MTR) Access Denied: • site limited to US but requested from India Useful tools: • Translate Error String • View Logs (GREP) • Locate IP • Request CURL with X-Forwarded-For with an IP address from US Property information: • What CP code and origin are used for a specific URL (applicable for complex setups) Useful tools: • Translate an Akamaized URL • Akamai Pragma headers
29. © AKAMAI - EDGE 2017 Summary Today we learnt how to • Test and troubleshoot with Luna tools • Test availability and performance from own computer • Run tools from different locations using Luna tools • Different troubleshooting scenarios
30. © AKAMAI - EDGE 2017
31. © AKAMAI - EDGE 2017 Any questions?
32. © AKAMAI - EDGE 2017 Sharath Rao • Vladimir Sidorov • Blaž Vizjak