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fix: nas wake up on traffic

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Dominik Polakovics Polakovics 2026-04-14 10:46:15 +02:00
parent 227fc49cb8
commit 358f2296ce
2 changed files with 96 additions and 0 deletions
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63
hosts/fw/modules/nas-wake-on-access.nix
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@ -89,6 +89,47 @@ let
date +%s > "${lastSeenFile}"
fi
'';
fwIp = "${config.networkPrefix}.97.1";
nasWakeHtml = pkgs.writeText "nas-wake.html" ''
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="refresh" content="15">
<title>Waking up NAS...</title>
<style>
body { font-family: -apple-system, BlinkMacSystemFont, sans-serif; display: flex; justify-content: center; align-items: center; min-height: 100vh; margin: 0; background: #1a1a2e; color: #e0e0e0; }
.container { text-align: center; padding: 2rem; }
h1 { font-size: 1.8em; margin-bottom: 0.5em; }
p { font-size: 1.1em; color: #aaa; }
</style>
</head>
<body>
<div class="container">
<h1>NAS is waking up&hellip;</h1>
<p>A wake-on-LAN packet has been sent.<br>This page will refresh automatically in 15 seconds.</p>
</div>
</body>
</html>
'';
nasWakeHttpScript = pkgs.writeShellScript "nas-wake-http" ''
# Trigger WOL (reuses cooldown/holdoff from wakeScript)
${wakeScript} >&2 || true
BODY=$(cat ${nasWakeHtml})
LENGTH=''${#BODY}
printf "HTTP/1.1 503 Service Unavailable\r\n"
printf "Content-Type: text/html; charset=utf-8\r\n"
printf "Content-Length: %d\r\n" "$LENGTH"
printf "Retry-After: 15\r\n"
printf "Connection: close\r\n"
printf "\r\n"
printf "%s" "$BODY"
'';
in
{
systemd.services.nas-wake-journal = {
@ -130,4 +171,26 @@ in
AccuracySec = "1s";
};
};
# Allow web-02 (bridged to server) to reach the wake HTTP endpoint
networking.firewall.interfaces."server".allowedTCPPorts = [ 9800 ];
# HTTP endpoint for nginx error_page → WOL trigger.
# When nginx on web-arm gets a 502/504 from a NAS-proxied vhost, it
# proxies the request here. We send WOL and return a "waking up" page.
systemd.services.nas-wake-http = {
description = "HTTP endpoint to wake NAS on reverse-proxy failure";
after = [ "network-online.target" ];
wants = [ "network-online.target" ];
wantedBy = [ "multi-user.target" ];
path = with pkgs; [ coreutils ];
serviceConfig = {
Type = "simple";
ExecStart = "${pkgs.socat}/bin/socat TCP-LISTEN:9800,bind=${fwIp},reuseaddr,fork EXEC:${nasWakeHttpScript}";
Restart = "always";
RestartSec = "5s";
RuntimeDirectory = "nas-wake-on-access";
RuntimeDirectoryPreserve = "yes";
};
};
}