FreeBSD Jails

Website

docs.freebsd.org

Categories

#Developer Tools #Containers As A Service #Container Tools #Virtual Machine Management

runc

Website

github.com

Categories

#Web Servers #Web And Application Servers #Load Balancer / Reverse Proxy #Developer Tools

FreeBSD Jails features and specs

• Isolation
  FreeBSD Jails provide process isolation, allowing multiple processes to run independently without affecting each other.
• Security
  Jails offer an added layer of security by restricting the resources and access of applications, reducing potential attack surfaces.
• Resource Management
  Jails allow for fine-grained control over resource allocation, enabling administrators to manage CPU, memory, and network usage per jail.
• Simplicity
  Compared to full virtualization solutions, jails are lightweight and simple to set up, making them easier to deploy and manage.
• Compatibility
  Running on the FreeBSD operating system, jails are inherently compatible with FreeBSD applications and services.

Possible disadvantages of FreeBSD Jails

• Limited Isolation
  While jails provide process isolation, they share the same kernel, which may lead to using kernel-level exploits to escape the jail.
• FreeBSD Specific
  Jails are specific to FreeBSD, meaning they cannot natively run software designed for other operating systems without adaptation.
• Complex Networking
  Configuring networking in jails can be complex and may require careful setup to ensure proper isolation and performance.
• Resource Contention
  Since all jails run on the same host system, high resource usage by one jail can affect the performance of others if not managed properly.
• Lack of GUI and Advanced Features
  FreeBSD Jails focus on providing a command-line environment with limited graphical support, which may not be suitable for all applications.

runc features and specs

• Standardization
  runc is part of the Open Containers Initiative (OCI), promoting standardization across container runtimes. This ensures interoperability and broad community support.
• Lightweight
  As a lightweight and fast CLI tool, runc provides a minimal runtime for environments where resource efficiency is critical.
• Security
  runc adheres to principles of secure software development and incorporates Linux kernel features like namespaces and cgroups to enhance security.
• Broad Adoption
  As the reference implementation for OCI, runc is widely adopted and tested in production environments, ensuring reliability.
• Flexibility
  runc offers the flexibility to handle low-level container configurations, making it suitable for advanced users needing granular control.

Possible disadvantages of runc

• Complexity for Beginners
  The low-level nature of runc can be daunting for beginners who might prefer higher-level tools like Docker that abstract away complexities.
• Minimalist Design
  While its simplicity is an advantage, runc lacks some of the advanced features and orchestration capabilities found in other container platforms.
• Manual Configurations
  Users need to manually handle configurations, which can be error-prone and time-consuming compared to automated solutions.
• Ecosystem Integration
  runc does not provide direct integration with tools and platforms by default, requiring additional setup for comprehensive ecosystem support.
• Limited Features
  Compared to complete container platforms, runc offers fewer built-in features, requiring supplementary tools to achieve similar functionalities.

20 Years of FreeBSD Jails (2019)

More videos:

2/21/19 RunC Vulnerability Gives Root Access on Container Systems| AT&T ThreatTraq

More videos: