29 October 2020

#Splunk

#Splunk

Key Concepts


Topic SubTopic Basic ✅ Intermediate ✅ Advanced ✅ Expert ✅
Introduction What is Splunk, Features, Benefits ✅ ✅ ✅ ✅
Installation & Setup On-prem, Cloud, System requirements ✅ ✅ ✅ ✅
UI Navigation Splunk Web, Dashboards, Search UI ✅ ✅ ✅ ✅
Authentication & Authorization Users, Roles, Permissions ✅ ✅ ✅ ✅
Basic Searches Search bar, Keywords, Time range ✅ ✅ ✅ ✅
Alerts Real-time vs Scheduled alerts, Trigger conditions ✅ ✅ ✅ ✅
Forwarders Universal, Heavy, Deployment server ✅ ✅ ✅ ✅
Indexing Basics Index creation, Event ingestion ✅ ✅ ✅ ✅
Reports Creating basic reports, Exporting data ✅ ✅ ✅ ✅
Community & Resources Documentation, Forums, Splunkbase ✅ ✅ ✅ ✅
Data Ingestion Forwarders, Inputs, Data sources ✅ ✅ ✅
Indexing Index types, Index configuration, Retention policies ✅ ✅ ✅
Search Processing Language (SPL) Commands, Functions, Joins ✅ ✅ ✅
Dashboards & Visualizations Panels, Charts, Dynamic dashboards ✅ ✅ ✅
Alerts & Reports Scheduled alerts, Real-time alerts, Reporting best practices ✅ ✅ ✅
Knowledge Objects Saved searches, Event types, Tags, Fields ✅ ✅ ✅
Clustering Indexer clustering, Search head clustering, Multi-site setup ✅ ✅
Advanced SPL Subsearches, Macros, Lookups, Optimizations ✅ ✅
Performance Tuning Query optimization, Indexing performance, Resource management ✅ ✅
Enterprise Deployment High availability, Disaster recovery, Multi-site replication ✅ ✅

Interview question


1. Introduction to Splunk ? Overview, Architecture, Features

  1. What is Splunk?
  2. Explain the main features of Splunk.
  3. What are the components of Splunk architecture?
  4. How does Splunk index data?
  5. What are the benefits of using Splunk for IT operations?
  6. How does Splunk handle real-time data?
  7. What is the difference between Splunk Enterprise and Splunk Cloud?
  8. What is the Splunk Forwarder?
  9. What is the role of Indexers in Splunk?
  10. What is the role of Search Heads in Splunk?
  11. How does Splunk achieve scalability?
  12. Explain the concept of Splunk apps and add-ons.
  13. How does Splunk process log data?
  14. What are sourcetypes in Splunk?
  15. Explain the difference between events and raw data.
  16. What is a Splunk license?
  17. What is the difference between free and enterprise Splunk licenses?
  18. How does Splunk handle multi-tenant environments?
  19. How to troubleshoot basic Splunk errors?
  20. What are common use cases for Splunk?

2. Data Onboarding ? Forwarders, Inputs, Indexing

  1. How to ingest data into Splunk?
  2. What is a Universal Forwarder?
  3. What is a Heavy Forwarder?
  4. How to configure data inputs in Splunk?
  5. What is indexing in Splunk?
  6. How to manage index storage?
  7. What is the difference between indexed and raw data?
  8. How to define sourcetypes?
  9. How to handle large volume data ingestion?
  10. What is event breaking?
  11. How to manage timestamp extraction?
  12. How to configure TCP/UDP data inputs?
  13. How to ingest Windows logs into Splunk?
  14. How to ingest Linux logs into Splunk?
  15. How to handle JSON or CSV data in Splunk?
  16. How to manage heavy ingestion using HEC (HTTP Event Collector)?
  17. What are monitored vs scripted inputs?
  18. How to validate data ingestion?
  19. How to troubleshoot missing data?
  20. Best practices for data onboarding.

3. Searching & Reporting ? SPL, Fields, Commands

  1. What is SPL (Search Processing Language)?
  2. How to search for events using SPL?
  3. What are fields in Splunk?
  4. How to extract fields using field extractor?
  5. How to use basic commands like stats, eval, table?
  6. How to filter results using search commands?
  7. How to use regex in Splunk searches?
  8. What is the difference between search vs report?
  9. How to create a custom report?
  10. How to schedule searches in Splunk?
  11. How to generate visualizations using SPL?
  12. What are lookup tables?
  13. How to join data using lookup commands?
  14. How to use eval for calculated fields?
  15. How to rank results using top or rare commands?
  16. How to use timechart for trend analysis?
  17. How to use transaction command?
  18. How to troubleshoot slow searches?
  19. What is subsearch and how to use it?
  20. How to optimize search performance?

4. Alerts & Notifications ? Real-time, Scheduled, Trigger Actions

  1. What is an alert in Splunk?
  2. How to create a real-time alert?
  3. How to create a scheduled alert?
  4. What are trigger conditions in alerts?
  5. How to configure alert actions?
  6. How to send email notifications from alerts?
  7. How to run scripts via alert actions?
  8. How to throttle alerts to avoid multiple triggers?
  9. How to manage alert severity?
  10. How to monitor alert performance?
  11. How to use adaptive thresholds in alerts?
  12. How to test alerts before deployment?
  13. How to enable alert suppression?
  14. How to use alerts for security monitoring?
  15. How to integrate alerts with third-party tools?
  16. How to troubleshoot alert failures?
  17. How to track alert history?
  18. How to manage alert permissions?
  19. How to create alert dashboards?
  20. Best practices for alert management.

5. Dashboards & Visualizations ? Panels, Charts, Custom Views

  1. What is a dashboard in Splunk?
  2. How to create a new dashboard?
  3. How to add panels to a dashboard?
  4. How to create charts in Splunk?
  5. Difference between single-value and table panels?
  6. How to create dynamic dashboards?
  7. How to use drilldowns in dashboards?
  8. How to customize dashboard layout?
  9. How to use tokens in dashboards?
  10. How to schedule dashboard refresh?
  11. How to create form-based dashboards?
  12. How to embed dashboards externally?
  13. How to use advanced visualizations?
  14. How to handle large datasets in dashboards?
  15. How to use inline CSS and JS in dashboards?
  16. How to manage dashboard permissions?
  17. How to create alerts from dashboard panels?
  18. How to optimize dashboard performance?
  19. How to reuse panels across dashboards?
  20. Best practices for dashboard design.

6. Knowledge Objects ? Tags, Event Types, Lookups, Calculated Fields

  1. What are knowledge objects in Splunk?
  2. How to create tags for events?
  3. How to define event types?
  4. What are calculated fields?
  5. How to create a lookup table?
  6. How to use automatic lookups?
  7. How to create manual lookups?
  8. How to manage knowledge objects centrally?
  9. How to version control knowledge objects?
  10. How to share knowledge objects across apps?
  11. How to create field aliases?
  12. How to create workflow actions?
  13. How to use extracted fields in reports?
  14. How to manage search-time vs index-time fields?
  15. How to audit knowledge object usage?
  16. How to troubleshoot missing fields?
  17. How to manage calculated fields for performance?
  18. How to use regex for event types?
  19. How to integrate external data sources using lookups?
  20. Best practices for knowledge object management.

7. Security & User Management ? Roles, Permissions, Authentication

  1. How does Splunk handle user authentication?
  2. What are roles in Splunk?
  3. How to assign permissions to roles?
  4. Difference between user and role-based permissions?
  5. How to manage admin users?
  6. How to integrate LDAP/AD with Splunk?
  7. How to audit user activity in Splunk?
  8. How to manage read-only users?
  9. How to restrict access to indexes?
  10. How to restrict access to apps?
  11. How to enable two-factor authentication?
  12. How to manage role inheritance?
  13. How to configure SSO with Splunk?
  14. How to monitor failed login attempts?
  15. How to rotate credentials securely?
  16. How to manage knowledge object permissions?
  17. How to grant temporary access to users?
  18. How to handle multi-tenant security?
  19. How to secure Splunk REST API access?
  20. Best practices for user and role management.

8. Performance & Tuning ? Indexing, Search Optimization, Clustering

  1. How to monitor Splunk performance?
  2. How to tune indexing for high throughput?
  3. How to optimize search queries?
  4. How to manage large volumes of data efficiently?
  5. What is search concurrency?
  6. How to monitor resource utilization?
  7. How to configure summary indexing?
  8. How to use report acceleration for faster results?
  9. How to optimize dashboard performance?
  10. How to manage Splunk clustering?
  11. How to use index-time and search-time optimizations?
  12. How to monitor Splunk queues?
  13. How to configure event batching?
  14. How to handle heavy forwarders for performance?
  15. How to manage frozen data?
  16. How to scale Splunk horizontally?
  17. How to handle distributed searches?
  18. How to monitor search scheduler?
  19. How to tune JVM for Splunk?
  20. Best practices for high-performance Splunk deployments.

9. Advanced Splunk ? Apps, Add-ons, REST API, Integration

  1. What are Splunk apps and add-ons?
  2. How to install a Splunk app?
  3. How to create a custom Splunk app?
  4. How to use Splunk REST API?
  5. How to integrate Splunk with monitoring tools?
  6. How to integrate Splunk with ticketing systems?
  7. How to send alerts to third-party tools?
  8. How to manage app dependencies?
  9. How to monitor app usage and performance?
  10. How to deploy apps across multiple users?
  11. How to create modular inputs in apps?
  12. How to use scripted inputs?
  13. How to create custom dashboards in apps?
  14. How to package knowledge objects in apps?
  15. How to create custom visualizations?
  16. How to use Splunk SDKs?
  17. How to deploy Splunk apps in distributed environments?
  18. How to integrate Splunk with cloud services?
  19. How to extend Splunk functionality using Python?
  20. Best practices for app and integration development.

10. Troubleshooting & Best Practices ? Monitoring, Logging, Alerts

  1. How to troubleshoot missing data?
  2. How to debug failed searches?
  3. How to monitor forwarder health?
  4. How to monitor indexer performance?
  5. How to monitor search head performance?
  6. How to troubleshoot slow dashboards?
  7. How to track failed alerts?
  8. How to manage log rotation and storage?
  9. How to implement backup and restore?
  10. How to audit Splunk usage?
  11. How to identify bottlenecks in Splunk?
  12. How to optimize knowledge object usage?
  13. How to monitor indexer queues?
  14. How to handle corrupted indexes?
  15. How to perform cluster health check?
  16. How to monitor app performance?
  17. How to optimize search performance in large environments?
  18. How to manage Splunk upgrades?
  19. How to implement disaster recovery?
  20. Best practices for production Splunk deployment.

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