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Add rebuild output logging for debugging

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Redirect nixos-rebuild stdout/stderr to /var/log/cm-dashboard/nixos-rebuild.log
while keeping the process detached. This allows monitoring rebuild progress
and debugging why cargo builds in /tmp aren't visible when agent runs.

Use: tail -f /var/log/cm-dashboard/nixos-rebuild.log to monitor progress.
This commit is contained in:
Christoffer Martinsson 2025-10-25 15:23:20 +02:00
parent 16ea853f5b
commit 1b3f8671c0
1 changed files with 9 additions and 3 deletions
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12
agent/src/agent.rs
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@ -296,9 +296,15 @@ impl Agent {
// Clone or update repository
let git_result = self.ensure_git_repository(git_url, git_branch, working_dir, api_key_file).await;
// Execute nixos-rebuild if git operation succeeded - run detached to avoid killing current agent
// Execute nixos-rebuild if git operation succeeded - run detached but log output
let rebuild_result = if git_result.is_ok() {
info!("Git repository ready, executing nixos-rebuild in detached mode");
let log_file = std::fs::OpenOptions::new()
.create(true)
.append(true)
.open("/var/log/cm-dashboard/nixos-rebuild.log")
.map_err(|e| anyhow::anyhow!("Failed to open rebuild log: {}", e))?;
tokio::process::Command::new("nohup")
.arg("sudo")
.arg("/run/current-system/sw/bin/nixos-rebuild")
@ -310,8 +316,8 @@ impl Agent {
.arg(".")
.current_dir(working_dir)
.stdin(std::process::Stdio::null())
.stdout(std::process::Stdio::null())
.stderr(std::process::Stdio::null())
.stdout(std::process::Stdio::from(log_file.try_clone().unwrap()))
.stderr(std::process::Stdio::from(log_file))
.spawn()
} else {
return git_result.and_then(|_| unreachable!());