Incident Response in TuskLang - Bash Guide

🚨 Revolutionary Incident Response Configuration

Incident response in TuskLang transforms your configuration files into intelligent, automated response systems. No more manual incident handling or fragmented playbooks—everything lives in your TuskLang configuration with dynamic detection, automated mitigation, and real-time alerting.

> "We don't bow to any king" – TuskLang incident response breaks free from traditional incident management constraints and brings modern, automated response capabilities to your Bash applications.

🚀 Core Incident Response Directives

Basic Incident Response Setup

#incident-response: enabled           # Enable incident response
#ir-enabled: true                    # Alternative syntax
#ir-detection: true                  # Enable incident detection
#ir-mitigation: auto                 # Automated mitigation
#ir-alerting: slack                  # Alerting channel
#ir-logging: true                    # Enable incident logging

Advanced Incident Response Configuration

#ir-playbook: /etc/tusk/ir-playbook.yml   # Path to incident response playbook
#ir-severity-threshold: high              # Minimum severity for auto-response
#ir-notification: pagerduty               # Notification integration
#ir-escalation: true                      # Enable escalation
#ir-postmortem: true                      # Require postmortem analysis
#ir-simulation: true                      # Enable incident simulation

🔧 Bash Incident Response Implementation

Basic Incident Response Manager

#!/bin/bash
Load incident response configuration
source <(tsk load incident-response.tsk)
Incident response configuration
IR_ENABLED="${ir_enabled:-true}"
IR_DETECTION="${ir_detection:-true}"
IR_MITIGATION="${ir_mitigation:-auto}"
IR_ALERTING="${ir_alerting:-slack}"
IR_LOGGING="${ir_logging:-true}"
Incident response manager
class IncidentResponseManager {
    constructor() {
        this.enabled = IR_ENABLED
        this.detection = IR_DETECTION
        this.mitigation = IR_MITIGATION
        this.alerting = IR_ALERTING
        this.logging = IR_LOGGING
        this.incidents = new Map()
        this.stats = {
            detected: 0,
            mitigated: 0,
            escalated: 0,
            closed: 0
        }
    }
    
    detectIncident(event) {
        if (!this.detection) return { detected: false }
        
        const incident = this.analyzeEvent(event)
        if (incident.detected) {
            this.stats.detected++
            this.logIncident(incident)
            this.handleIncident(incident)
        }
        return incident
    }
    
    handleIncident(incident) {
        if (incident.severity === 'high' && this.mitigation === 'auto') {
            this.mitigateIncident(incident)
        }
        this.sendAlert(incident)
        if (incident.severity === 'critical') {
            this.escalateIncident(incident)
        }
    }
    
    mitigateIncident(incident) {
        // Example: block IP, restart service, revoke credentials
        this.stats.mitigated++
        this.logMitigation(incident)
    }
    
    escalateIncident(incident) {
        this.stats.escalated++
        this.logEscalation(incident)
    }
    
    closeIncident(incident) {
        this.stats.closed++
        this.logClosure(incident)
    }
    
    sendAlert(incident) {
        // Implementation for sending alerts (Slack, PagerDuty, Email)
    }
    
    logIncident(incident) {
        // Write to incident log file
    }
    
    logMitigation(incident) {}
    logEscalation(incident) {}
    logClosure(incident) {}
    
    getStats() {
        return { ...this.stats }
    }
    
    getIncidents() {
        return Array.from(this.incidents.values())
    }
}
Initialize incident response manager
const irManager = new IncidentResponseManager()

Automated Detection and Mitigation

#!/bin/bash
Automated incident detection and mitigation
auto_incident_response() {
    local event="$1"
    
    # Detect incident
    if detect_security_breach "$event"; then
        echo "Security breach detected!"
        block_ip_from_event "$event"
        send_incident_alert "$event" "Security breach detected and IP blocked."
        log_incident "$event" "Security breach"
        return 0
    fi
    
    if detect_service_failure "$event"; then
        echo "Service failure detected!"
        restart_service_from_event "$event"
        send_incident_alert "$event" "Service failure detected and service restarted."
        log_incident "$event" "Service failure"
        return 0
    fi
    
    if detect_data_breach "$event"; then
        echo "Data breach detected!"
        revoke_credentials_from_event "$event"
        send_incident_alert "$event" "Data breach detected and credentials revoked."
        log_incident "$event" "Data breach"
        return 0
    fi
    
    echo "No incident detected."
    return 1
}
Example detection functions
detect_security_breach() {
    local event="$1"
    echo "$event" | grep -qi "unauthorized access"
}
detect_service_failure() {
    local event="$1"
    echo "$event" | grep -qi "service down"
}
detect_data_breach() {
    local event="$1"
    echo "$event" | grep -qi "data exfiltration"
}
Example mitigation functions
block_ip_from_event() {
    local event="$1"
    local ip=$(echo "$event" | grep -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b" | head -1)
    if [[ -n "$ip" ]]; then
        iptables -A INPUT -s "$ip" -j DROP
        echo "Blocked IP: $ip"
    fi
}
restart_service_from_event() {
    local event="$1"
    local service=$(echo "$event" | grep -oE "service: [a-zA-Z0-9_-]+" | cut -d' ' -f2)
    if [[ -n "$service" ]]; then
        systemctl restart "$service"
        echo "Restarted service: $service"
    fi
}
revoke_credentials_from_event() {
    local event="$1"
    local user=$(echo "$event" | grep -oE "user: [a-zA-Z0-9_-]+" | cut -d' ' -f2)
    if [[ -n "$user" ]]; then
        usermod -L "$user"
        echo "Revoked credentials for user: $user"
    fi
}
send_incident_alert() {
    local event="$1"
    local message="$2"
    # Example: send to Slack or PagerDuty
    echo "ALERT: $message"
}
log_incident() {
    local event="$1"
    local type="$2"
    local log_file="/var/log/incident_response.log"
    echo "$(date '+%Y-%m-%d %H:%M:%S') | $type | $event" >> "$log_file"
}

🎯 Real-World Configuration Examples

Complete Incident Response Configuration

incident-response-config.tsk
incident_response_config:
  enabled: true
  detection: true
  mitigation: auto
  alerting: slack
  logging: true
#incident-response: enabled
#ir-enabled: true
#ir-detection: true
#ir-mitigation: auto
#ir-alerting: slack
#ir-logging: true
#ir-playbook: /etc/tusk/ir-playbook.yml
#ir-severity-threshold: high
#ir-notification: pagerduty
#ir-escalation: true
#ir-postmortem: true
#ir-simulation: true
#ir-config:
 detection:
   enabled: true
   patterns:
     - "unauthorized access"
     - "service down"
     - "data exfiltration"
 mitigation:
   auto_block_ip: true
   auto_restart_service: true
   auto_revoke_credentials: true
 alerting:
   slack:
     webhook: "${SLACK_WEBHOOK}"
     channel: "#incidents"
   pagerduty:
     api_key: "${PAGERDUTY_API_KEY}"
     service_id: "${PAGERDUTY_SERVICE_ID}"
 escalation:
   enabled: true
   contacts:
     - "oncall@example.com"
     - "security@example.com"
 postmortem:
   enabled: true
   template: "/etc/tusk/postmortem-template.md"
 simulation:
   enabled: true
   schedule: "0 3   0"

Multi-Channel Alerting

multi-channel-alerting.tsk
multi_channel_alerting:
  alerting:
    slack: true
    pagerduty: true
    email: true
    sms: false
#ir-alerting: slack,pagerduty,email
#ir-notification: pagerduty
#ir-config:
 alerting:
   slack:
     webhook: "${SLACK_WEBHOOK}"
     channel: "#incidents"
   pagerduty:
     api_key: "${PAGERDUTY_API_KEY}"
     service_id: "${PAGERDUTY_SERVICE_ID}"
   email:
     recipients: ["ops@example.com"]
     smtp_server: "smtp.example.com"

🚨 Troubleshooting Incident Response

Common Issues and Solutions

1. Detection Issues

Debug incident detection
debug_incident_detection() {
    local event="$1"
    echo "Debugging incident detection..."
    if auto_incident_response "$event"; then
        echo "✓ Incident detected and handled"
    else
        echo "✗ No incident detected"
    fi
}

2. Alerting Issues

Debug alerting
debug_alerting() {
    local message="$1"
    echo "Debugging alerting..."
    # Test Slack alert
    if [[ -n "${SLACK_WEBHOOK}" ]]; then
        curl -X POST -H 'Content-type: application/json' --data "{\"text\": \"$message\"}" "$SLACK_WEBHOOK"
        echo "✓ Slack alert sent"
    else
        echo "⚠ SLACK_WEBHOOK not configured"
    fi
    # Test PagerDuty alert
    if [[ -n "${PAGERDUTY_API_KEY}" ]]; then
        curl -X POST -H "Authorization: Token token=$PAGERDUTY_API_KEY" -H "Content-Type: application/json" \
            -d "{\"service_key\": \"$PAGERDUTY_SERVICE_ID\", \"event_type\": \"trigger\", \"description\": \"$message\"}" \
            "https://events.pagerduty.com/generic/2010-04-15/create_event.json"
        echo "✓ PagerDuty alert sent"
    else
        echo "⚠ PAGERDUTY_API_KEY not configured"
    fi
}

🔒 Security Best Practices

Incident Response Security Checklist

Security validation
validate_incident_response_security() {
    echo "Validating incident response security configuration..."
    # Check logging
    if [[ "${ir_logging}" == "true" ]]; then
        echo "✓ Incident logging enabled"
    else
        echo "⚠ Incident logging not enabled"
    fi
    # Check playbook
    if [[ -f "${ir_playbook}" ]]; then
        echo "✓ Incident response playbook found: ${ir_playbook}"
    else
        echo "⚠ Incident response playbook not found"
    fi
    # Check escalation
    if [[ "${ir_escalation}" == "true" ]]; then
        echo "✓ Escalation enabled"
    else
        echo "⚠ Escalation not enabled"
    fi
    # Check postmortem
    if [[ "${ir_postmortem}" == "true" ]]; then
        echo "✓ Postmortem analysis enabled"
    else
        echo "⚠ Postmortem analysis not enabled"
    fi
}

📈 Performance Optimization Tips

Incident Response Performance Checklist

Performance validation
validate_incident_response_performance() {
    echo "Validating incident response performance configuration..."
    # Check detection speed
    local detection_time="${ir_detection_time:-1}" # seconds
    if [[ "$detection_time" -le 2 ]]; then
        echo "✓ Fast incident detection ($detection_time s)"
    else
        echo "⚠ Incident detection may be slow ($detection_time s)"
    fi
    # Check alerting speed
    local alerting_time="${ir_alerting_time:-1}" # seconds
    if [[ "$alerting_time" -le 2 ]]; then
        echo "✓ Fast alerting ($alerting_time s)"
    else
        echo "⚠ Alerting may be slow ($alerting_time s)"
    fi
    # Check mitigation automation
    if [[ "${ir_mitigation}" == "auto" ]]; then
        echo "✓ Automated mitigation enabled"
    else
        echo "⚠ Automated mitigation not enabled"
    fi
}

🎯 Next Steps

- Postmortem Analysis: Learn about incident postmortems - Plugin Integration: Explore incident response plugins - Advanced Patterns: Understand complex incident response patterns - Continuous Simulation: Implement incident simulation and drills - Incident Testing: Test incident response configurations

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Incident response transforms your TuskLang configuration into a resilient, automated system. It brings modern detection, mitigation, and alerting capabilities to your Bash applications with intelligent playbooks, real-time monitoring, and comprehensive postmortem analysis!