Firecracker RootFS Builder

Firecracker RootFS handler is a simple project to create root-file-system with Docker images in ext4 format and allows you to run them in micro-vms by Firecracker.

Features

• Convert Docker images to rootFS
• Store them locally (Registry soon ...)

Installation

To install OpenMetricMigrator, clone the repository and build the project:

# Clone the repository
git clone https://github.com/WoodProgrammer/firecracker-rootfs-builder.git

cd firecracker-rootfs-builder

go build -o fco .

mv fco /usr/local/bin

Usage

Run the tool with the required options:

cat <<EOF>config.yaml
image: alpine
docker_file: Dockerfile
context: "."
target_directory: "alpine-rootfs"
EOF

./fco -C config.yaml

Config file contains docker image spec and rootfs details.Apart from these details you can basically pass the rootFS size and name as well. (Needs to improve)

Available Flags

CLI tool to manage RootFS for firecracker micro VMs

Usage:
  rootfsCreator [flags]

Flags:
  -C, --config string            Config file of RootFS creation (default "config.yaml")
  -F, --filesystem-name string   Name of rootfs (default "rootfs")
  -S, --filesystem-size int      Size of rootfs (default 10)
  -h, --help                     help for rootfsCreator

Example

Convert an OpenMetrics file to a Prometheus-compatible format:

fco -C config.yaml

Contributing

Contributions are welcome! Feel free to submit issues or pull requests to improve the tool.

Contact

For any questions or feedback, feel free to open an issue on GitHub.

TODO ;

• Registry ability
• More use cases on test suits