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|
{ pkgs, ... }:
let
privateKey = ''
-----BEGIN OPENSSH PRIVATE KEY-----
b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
QyNTUxOQAAACBx8UB04Q6Q/fwDFjakHq904PYFzG9pU2TJ9KXpaPMcrwAAAJB+cF5HfnBe
RwAAAAtzc2gtZWQyNTUxOQAAACBx8UB04Q6Q/fwDFjakHq904PYFzG9pU2TJ9KXpaPMcrw
AAAEBN75NsJZSpt63faCuaD75Unko0JjlSDxMhYHAPJk2/xXHxQHThDpD9/AMWNqQer3Tg
9gXMb2lTZMn0pelo8xyvAAAADXJzY2h1ZXR6QGt1cnQ=
-----END OPENSSH PRIVATE KEY-----
'';
publicKey = ''
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHHxQHThDpD9/AMWNqQer3Tg9gXMb2lTZMn0pelo8xyv
'';
in
{
name = "btrbk-doas";
meta = {
maintainers = with pkgs.lib.maintainers; [
symphorien
tu-maurice
];
};
nodes = {
archive =
{ ... }:
{
security.sudo.enable = false;
security.doas.enable = true;
environment.systemPackages = with pkgs; [ btrfs-progs ];
# note: this makes the privateKey world readable.
# don't do it with real ssh keys.
environment.etc."btrbk_key".text = privateKey;
services.btrbk = {
extraPackages = [ pkgs.lz4 ];
instances = {
remote = {
onCalendar = "minutely";
settings = {
ssh_identity = "/etc/btrbk_key";
ssh_user = "btrbk";
stream_compress = "lz4";
volume = {
"ssh://main/mnt" = {
target = "/mnt";
snapshot_dir = "btrbk/remote";
subvolume = "to_backup";
};
};
};
};
};
};
};
main =
{ ... }:
{
security.sudo.enable = false;
security.doas.enable = true;
environment.systemPackages = with pkgs; [ btrfs-progs ];
services.openssh = {
enable = true;
passwordAuthentication = false;
kbdInteractiveAuthentication = false;
};
services.btrbk = {
extraPackages = [ pkgs.lz4 ];
sshAccess = [
{
key = publicKey;
roles = [
"source"
"send"
"info"
"delete"
];
}
];
instances = {
local = {
onCalendar = "minutely";
settings = {
volume = {
"/mnt" = {
snapshot_dir = "btrbk/local";
subvolume = "to_backup";
};
};
};
};
};
};
};
};
testScript = ''
start_all()
# create btrfs partition at /mnt
for machine in (archive, main):
machine.succeed("dd if=/dev/zero of=/data_fs bs=120M count=1")
machine.succeed("mkfs.btrfs /data_fs")
machine.succeed("mkdir /mnt")
machine.succeed("mount /data_fs /mnt")
# what to backup and where
main.succeed("btrfs subvolume create /mnt/to_backup")
main.succeed("mkdir -p /mnt/btrbk/{local,remote}")
# check that local snapshots work
with subtest("local"):
main.succeed("echo foo > /mnt/to_backup/bar")
main.wait_until_succeeds("cat /mnt/btrbk/local/*/bar | grep foo")
main.succeed("echo bar > /mnt/to_backup/bar")
main.succeed("cat /mnt/btrbk/local/*/bar | grep foo")
# check that btrfs send/receive works and ssh access works
with subtest("remote"):
archive.wait_until_succeeds("cat /mnt/*/bar | grep bar")
main.succeed("echo baz > /mnt/to_backup/bar")
archive.succeed("cat /mnt/*/bar | grep bar")
'';
}
|
