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lifecycle: force PRIVATE_NETWORK=0 so per-agent web UI port reaches host

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müde 2026-05-15 01:35:30 +02:00
parent 36c4c61ea2
commit 59de7fa3c5
1 changed files with 15 additions and 7 deletions
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22
hive-c0re/src/lifecycle.rs
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@ -325,26 +325,34 @@ async fn systemd_daemon_reload() -> Result<()> {
Ok(())
}
/// Idempotently rewrite the `EXTRA_NSPAWN_FLAGS` line in
/// `/etc/nixos-containers/<container>.conf`. The start script expands this
/// variable unquoted into the `systemd-nspawn` command.
/// Idempotently rewrite the lines in `/etc/nixos-containers/<container>.conf`
/// that hive-c0re owns: `PRIVATE_NETWORK` (forced 0 so the agent's web UI port
/// is reachable on the host) and `EXTRA_NSPAWN_FLAGS` (the runtime-dir bind).
/// The start script expands `$EXTRA_NSPAWN_FLAGS` unquoted into the
/// `systemd-nspawn` command.
fn set_nspawn_flags(container: &str, agent_dir: &Path) -> Result<()> {
let path = format!("/etc/nixos-containers/{container}.conf");
let original = std::fs::read_to_string(&path).with_context(|| format!("read {path}"))?;
let flag = format!(
let bind_flag = format!(
"EXTRA_NSPAWN_FLAGS=\"--bind={}:{CONTAINER_RUNTIME_MOUNT}\"",
agent_dir.display()
);
let mut lines: Vec<String> = original
.lines()
.filter(|line| !line.trim_start().starts_with("EXTRA_NSPAWN_FLAGS="))
.filter(|line| {
let trimmed = line.trim_start();
!trimmed.starts_with("EXTRA_NSPAWN_FLAGS=")
&& !trimmed.starts_with("PRIVATE_NETWORK=")
})
.map(str::to_owned)
.collect();
lines.push(flag);
// Share host netns so per-agent web UI ports are reachable directly.
lines.push("PRIVATE_NETWORK=0".to_owned());
lines.push(bind_flag);
let mut content = lines.join("\n");
content.push('\n');
std::fs::write(&path, content).with_context(|| format!("write {path}"))?;
tracing::info!(%path, "set EXTRA_NSPAWN_FLAGS");
tracing::info!(%path, "set PRIVATE_NETWORK=0 + EXTRA_NSPAWN_FLAGS");
Ok(())
}