Show HN: A 10KiB kernel for cloud apps

Summary

Important This has only been tested with Digital Ocean and Proxmox. Support for other hypervisor/cloud providers (AWS, Azure, and Google Cloud) is coming soon. BareMetal Cloud is a minimal version of the BareMetal exokernel specifically geared for running in public/private cloud instances. This minimal version of BareMetal contains only the relevant drivers, is 10,240 bytes in size, and only uses 4 MiB of memory. All other memory is allocated to the payload. An instance of BareMetal is running in Digital Ocean at http://baremetal.returninfinity.com and will respond to HTTP and ICMP. Prerequisites The script in this repo depends on a Debian-based Linux system. macOS is also supported to build and test if you are using Homebrew. NASM - Assembler to build the loader and kernel. QEMU - Computer emulator if you plan on running a virtual machine for quick testing. Git - Version control software for pulling the source code from GitHub. In Linux this can be completed with the following command: sudo apt install nasm qemu-system-x86 git In macOS via Homebrew this can be completed with the following command: brew install nasm qemu git Components BareMetal Cloud consists of two different projects: Pure64 - The software loader. BareMetal - The kernel. Getting Started Initial configuration git clone https://github.com/ReturnInfinity/BareMetal-Cloud.git cd BareMetal-Cloud ./baremetal.sh setup baremetal.sh setup automatically runs the build and install functions. Once the setup is complete you can execute baremetal.sh run to verify that everything installed correctly. Building ./baremetal.sh build This command builds the boot sector, loader (Pure64), and kernel Installing ./baremetal.sh install This command installs the software to the disk image. Running ./baremetal.sh run This command will run BareMetal-Cloud in a QEMU VM. Output to the serial port will be displayed to the console. Running in the Cloud Create a VMDK disk image ./baremetal.sh vmdk The resulting BareMetal_Cloud.vm...