Ubicloud

Ubicloud is a cloud computing platform designed to provide robust virtualization solutions, focusing on security and efficiency. It leverages the Kernel-based Virtual Machine (KVM) hypervisor, similar to other leading virtualization platforms, but integrates the Cloud Hypervisor (CH) as its Virtual Machine Monitor (VMM). This setup allows Ubicloud to offer a lightweight and secure environment for managing virtual machines.

Key features of Ubicloud include the use of virtio for network and block device emulation, which enhances performance and scalability through paravirtualization. For networking, Ubicloud employs TAP virtual network interfaces encapsulated within network namespaces to ensure additional security layers. Storage is managed via block devices, which provide a secure method of interacting with the host system by limiting access to the host kernel.

Ubicloud also emphasizes security isolation by running the Cloud Hypervisor as a regular Linux user, restricting its file system access and utilizing network namespaces. Additionally, it incorporates seccomp-bpf for syscall filtering, further reducing the attack surface. This approach ensures that Ubicloud provides a reliable and secure environment for workload isolation, preventing potential data leaks or unauthorized access between virtual machines.

Overall, Ubicloud's architecture is designed to balance performance and security, making it suitable for environments requiring robust virtualization capabilities with a focus on minimizing the attack surface.