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feat: sentinella: some

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This commit is contained in:
yukkop
2026-04-27 12:58:36 +00:00
parent 50d682d6f7
commit 0dfbee6472
6 changed files with 112 additions and 53 deletions
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40
nixos/module/hectic/service/sentinèlla.nix
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@@ -10,17 +10,15 @@
...
}: let
system = pkgs.stdenv.hostPlatform.system;
cfg = config.hectic.services."sentinèlla";
cfg = config.hectic.services."sentinèlla";
probePort = 5988;
peersDns = "peers.sentinella.hectic-lab.com";
in {
options = {
hectic.services."sentinèlla" = {
probe = {
enable = lib.mkEnableOption "sentinèlla probe — HTTP server exposing this node's health";
port = lib.mkOption {
type = lib.types.port;
default = 5988;
description = "TCP port the probe listens on.";
};
urls = lib.mkOption {
type = with lib.types; listOf str;
default = [];
@@ -52,16 +50,6 @@ in {
watcher = {
enable = lib.mkEnableOption "sentinèlla watcher — polls peers discovered via DNS and sends Telegram alerts";
peersDns = lib.mkOption {
type = lib.types.str;
example = "peers.sentinella.com";
description = ''
DNS name with multiple A records, one per peer node.
Configure externally (e.g. Cloudflare) with TTL 60:
peers.sentinella.com A 1.2.3.4
peers.sentinella.com A 5.6.7.8
'';
};
self = lib.mkOption {
type = with lib.types; nullOr str;
default = null;
@@ -73,11 +61,6 @@ in {
has a floating IP that hostname -I does not report correctly.
'';
};
peersPort = lib.mkOption {
type = lib.types.port;
default = 5988;
description = "Port all peer probes listen on.";
};
peersScheme = lib.mkOption {
type = lib.types.str;
default = "http";
@@ -125,6 +108,13 @@ in {
config = lib.mkMerge [
(lib.mkIf cfg.probe.enable {
networking.firewall = {
enable = true;
allowedTCPPorts = [
probePort
];
};
systemd.services."sentinella-probe" = {
description = "sentinèlla probe — node health HTTP server";
after = [ "network.target" ];
@@ -142,7 +132,7 @@ in {
StandardOutput = "journal";
StandardError = "journal";
Environment = lib.filter (s: s != "") [
"PORT=${builtins.toString cfg.probe.port}"
"PORT=${builtins.toString probePort}"
(lib.optionalString (cfg.probe.urls != []) "URLS=${lib.concatStringsSep " " cfg.probe.urls}")
(lib.optionalString (cfg.probe.volumes != []) "VOLUMES=${lib.concatStringsSep " " cfg.probe.volumes}")
(lib.optionalString (cfg.probe.authFile != null) "AUTH_FILE=${cfg.probe.authFile}")
@@ -178,9 +168,9 @@ in {
StandardError = "journal";
StateDirectory = "sentinella";
Environment = lib.filter (s: s != "") [
"PEERS_DNS=${cfg.watcher.peersDns}"
(lib.optionalString (cfg.watcher.self != null) "SELF=${cfg.watcher.self}")
"PEERS_PORT=${builtins.toString cfg.watcher.peersPort}"
"PEERS_DNS=${peersDns}"
(lib.optionalString (cfg.watcher.self != null) "SELF=${cfg.watcher.self}")
"PEERS_PORT=${builtins.toString probePort}"
"PEERS_SCHEME=${cfg.watcher.peersScheme}"
"POLLING_INTERVAL_SEC=${builtins.toString cfg.watcher.pollingIntervalSec}"
"STATE_DIR=/var/lib/sentinella"