The Logstash log level was hardcoded to info in log4j2.properties, and logstash.yml carried no log.level key, so the only way to raise verbosity for troubleshooting was to hand-edit a file that the next highstate overwrites. Add log_x_level and log_x_format to logstash:config so both render into logstash.yml, annotated as advanced per-node settings with the value sets Logstash 9.3.7 accepts. log4j2.properties gains jinja, so it moves to log4j2.properties.jinja and is rendered by a discrete lslog4j2 state rather than the lsetcsync recurse, which cannot rename. The recurse exclude_pat now matches both names so it neither copies the template verbatim nor lets clean: True delete the rendered file, matching how pipelines.yml is already handled. The appender layout is selected at render time so log.format actually changes the log output instead of being a dead setting, keeping the existing file name so nothing downstream moves. rootLogger.level now follows ls.log.level rather than claiming info regardless of the configured level.
Security Onion
Security Onion is a free and open Linux distribution for threat hunting, enterprise security monitoring, and log management. It includes a comprehensive suite of tools designed to work together to provide visibility into your network and host activity.
✨ Features
Security Onion includes everything you need to monitor your network and host systems:
- Security Onion Console (SOC): A unified web interface for analyzing security events and managing your grid.
- Elastic Stack: Powerful search backed by Elasticsearch.
- Intrusion Detection: Network-based IDS with Suricata and host-based monitoring with Elastic Fleet.
- Network Metadata: Detailed network metadata generated by Zeek or Suricata.
- Full Packet Capture: Retain and analyze raw network traffic with Suricata PCAP.
⭐ Security Onion Pro
For organizations and enterprises requiring advanced capabilities, Security Onion Pro offers additional features designed for scale and efficiency:
- Onion AI: Leverage powerful AI-driven insights to accelerate your analysis and investigations.
- Enterprise Features: Enhanced tools and integrations tailored for enterprise-grade security operations.
For more information, visit the Security Onion Pro page.
☁️ Cloud Deployment
Security Onion is available and ready to deploy in the AWS, Azure, and Google Cloud (GCP) marketplaces.
🚀 Getting Started
| Goal | Resource |
|---|---|
| Download | Security Onion ISO |
| Requirements | Hardware Guide |
| Install | Installation Instructions |
| What's New | Release Notes |
📖 Documentation & Support
For more detailed information, please visit our Documentation.
- FAQ: Frequently Asked Questions
- Community: Discussions & Support
- Training: Official Training
🤝 Contributing
We welcome contributions! Please see our CONTRIBUTING.md for guidelines on how to get involved.
🛡️ License
Security Onion is licensed under the terms of the license found in the LICENSE file.
Built with 🧅 by Security Onion Solutions.