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Add experimental Void guest workflow and vsock agent

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Make iterating on a Firecracker-friendly Void guest practical without replacing the Debian default image path.

Add local Void rootfs build/register/verify plumbing, a language-agnostic dev package baseline, and guest SSH/work-disk hardening so new images use the runtime bundle key, keep a normal root bash environment, and repair stale nested /root layouts on restart.

Replace the guest PING/PONG responder with an HTTP /healthz agent over vsock, rename the runtime bundle and config surface from ping helper to agent while still accepting the legacy keys, and route the post-SSH reminder through the new vm.health path.

Validated with GOCACHE=/tmp/banger-gocache go test ./..., make build, bash -n customize.sh make-rootfs-void.sh, and git diff --check.
This commit is contained in:
Thales Maciel 2026-03-19 14:51:25 -03:00
parent c8d9a122f9
commit 3ed78fdcfc
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GPG key ID: 33112E6833C34679
42 changed files with 2222 additions and 388 deletions
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4
runtime-bundle.toml
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@ -10,7 +10,7 @@ required_paths = [
"customize.sh",
"packages.sh",
"namegen",
"banger-vsock-pingd",
"banger-vsock-agent",
"packages.apt",
"id_ed25519",
"rootfs-docker.ext4",
@ -24,7 +24,7 @@ firecracker_bin = "firecracker"
ssh_key_path = "id_ed25519"
namegen_path = "namegen"
customize_script = "customize.sh"
vsock_ping_helper_path = "banger-vsock-pingd"
vsock_agent_path = "banger-vsock-agent"
default_packages_file = "packages.apt"
default_rootfs = "rootfs-docker.ext4"
default_work_seed = "rootfs-docker.work-seed.ext4"