# Splunk Configuration Template

# This file provides a template for configuring Splunk to collect and index logs.
# It includes examples for various log sources and configurations.
# Please review and modify this file according to your specific environment and requirements.

# ==============================================================================
# Global Settings
# ==============================================================================

[default]
host = <YOUR_HOSTNAME> # Replace with the actual hostname of the Splunk instance

# ==============================================================================
# Input Configuration: System Logs (Syslog)
# ==============================================================================

# Configure a UDP input for receiving syslog messages.
# Ensure your syslog daemon is configured to forward logs to this Splunk instance.

[udp://514]
connection_host = ip
sourcetype = syslog
index = main # Change if you want to index into a different index
disabled = false

# ==============================================================================
# Input Configuration: File Monitoring (Tail)
# ==============================================================================

# Monitor a specific log file.  Useful for application logs.
# Adjust the path and sourcetype accordingly.

[monitor:///var/log/<YOUR_APPLICATION>/<YOUR_APPLICATION>.log]
sourcetype = <YOUR_APPLICATION>_log
index = main # Change if you want to index into a different index
disabled = false
# Optional: Multiline event breaking (if needed)
# MUST_BREAK_AFTER = ^\d{4}-\d{2}-\d{2}

# ==============================================================================
# Input Configuration: Windows Event Logs (Windows)
# ==============================================================================

# Configure Splunk to collect Windows Event Logs.
# Adjust the event logs to monitor as needed.

[WinEventLog://Application]
disabled = false
index = wineventlog
sourcetype = WinEventLog:Application
# Optional: Filter events by event code
# evt_resolve_ad_obj = 1 # Resolve AD objects
# whitelist = 4624,4625 # Example: Only collect events with ID 4624 and 4625

[WinEventLog://System]
disabled = false
index = wineventlog
sourcetype = WinEventLog:System

[WinEventLog://Security]
disabled = false
index = wineventlog
sourcetype = WinEventLog:Security
# IMPORTANT: Consider the volume of security logs and storage implications.

# ==============================================================================
# Input Configuration: Scripted Input (Example: CPU Utilization)
# ==============================================================================

# Example of a scripted input to collect CPU utilization.
# Requires a script (e.g., cpu_utilization.sh or cpu_utilization.ps1)
# that outputs the CPU utilization in a structured format (e.g., CSV, JSON).

[script://$SPLUNK_HOME/etc/apps/<YOUR_APP_NAME>/bin/cpu_utilization.sh]
interval = 60  # Run every 60 seconds
sourcetype = cpu_utilization
index = metrics # Consider a dedicated metrics index
disabled = false

# ==============================================================================
# Transformations (Optional)
# ==============================================================================

# Use transformations to modify events before they are indexed.
# Example: Masking sensitive data.

# [transform-null]
# REGEX = (.*)<SENSITIVE_FIELD>.*
# DEST_KEY = _raw
# FORMAT = $1<SENSITIVE_FIELD>MASKED

# ==============================================================================
# Index Configuration (Optional)
# ==============================================================================

# Configure index-specific settings.

# [<YOUR_INDEX_NAME>]
# homePath   = $SPLUNK_DB/<YOUR_INDEX_NAME>/db
# coldPath   = $SPLUNK_DB/<YOUR_INDEX_NAME>/colddb
# thawedPath = $SPLUNK_DB/<YOUR_INDEX_NAME>/thaweddb
# maxDataSize = auto
# frozenTimePeriodInSecs = 90d  # 90 days retention

# ==============================================================================
# Notes
# ==============================================================================

# * Replace placeholders with actual values.
# * Ensure proper permissions are set for log files and scripts.
# * Test configurations thoroughly before deploying to production.
# * Consider using Splunk's monitoring console for health checks and troubleshooting.
# * Review Splunk documentation for detailed information on configuration options.