Kubernetes User Namespaces in 1.36 with hostUsers: false

📰 Dev.to · Indra Gusti Prasetya

Learn to enable user namespaces in Kubernetes 1.36 for enhanced security and isolation, and understand the kernel and containerd prerequisites

advanced Published 6 Jun 2026
Action Steps
  1. Configure kernel 6.3 for user namespace support
  2. Install containerd 2.0 for compatibility
  3. Calculate subuid ranges in /etc/subuid
  4. Enable user namespaces in Kubernetes 1.36 with hostUsers: false
  5. Test the setup for silent failures and security
Who Needs to Know This

DevOps and software engineering teams benefit from this knowledge to improve cluster security and manage user permissions effectively

Key Insight

💡 User namespaces in Kubernetes require specific kernel and containerd versions, and careful subuid configuration

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🚀 Enable user namespaces in #Kubernetes 1.36 for improved security!

Key Takeaways

Learn to enable user namespaces in Kubernetes 1.36 for enhanced security and isolation, and understand the kernel and containerd prerequisites

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