rootfs

README

Firecracker RootFS and Kernel

Kernel

To build a Kernel supported by Firecracker, follow the guide and configurations.

Use make vmlinux -j$(nproc) can accelerate the building process.

RootFS

bash build-jammy.sh

Network

Please refer to setup-tuntap.sh.

Boot a VM

After configure a TAP device following the official doc, run:

firectl --kernel ./vmlinux-5.10.bin --root-drive ./jammy.rootfs.ext4 --kernel-opts 'ro console=ttyS0 noapic reboot=k panic=1 pci=off nomodules ip=172.18.0.2::172.18.0.1:255.255.255.0::eth0:off' --tap-device 'tap0/AA:FC:00:00:00:01'

Note the ip parameter may need be tweak per your local network configuration.

References

• https://github.com/firecracker-microvm/firecracker/blob/main/docs/rootfs-and-kernel-setup.md
• https://jvns.ca/blog/2021/01/23/firecracker--start-a-vm-in-less-than-a-second/

Documentation

Index

• Variables

Variables

var SSHSigner ssh.Signer