From 076d4020e55631eb16bc09c3f541634b6cf17812 Mon Sep 17 00:00:00 2001
From: Kjetil Orbekk <kj@orbekk.com>
Date: Wed, 10 Mar 2021 09:19:24 -0500
Subject: backup probing

---
 modules/monitoring.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'modules')

diff --git a/modules/monitoring.nix b/modules/monitoring.nix
index 4e645c7..8d154ba 100644
--- a/modules/monitoring.nix
+++ b/modules/monitoring.nix
@@ -11,6 +11,10 @@ in
         type = lib.types.int;
         default = aliases.services.grafana.port;
       };
+      textFileDir = lib.mkOption {
+        type = lib.types.str;
+        default = "/var/lib/prometheus-node-exporter-text-files";
+      };
       grafana-domain = lib.mkOption {
         type = lib.types.str;
         default = "grafana.orbekk.com";
@@ -88,6 +92,7 @@ in
           enable = true;
           enabledCollectors = [ "systemd" ];
           port = cfg.prometheus-exporter-port;
+          extraFlags = ["--collector.textfile.directory=${cfg.textFileDir}"];
         };
         snmp = {
           enable = true;
@@ -97,6 +102,12 @@ in
       };
     };
 
+    system.activationScripts.node-exporter-directory.text =
+      ''
+        # Needed for Prometheus node exporter.
+        mkdir -pm 0775 ${cfg.textFileDir}
+      '';
+
     services.nginx.virtualHosts.${cfg.grafana-domain} = {
       enableACME = true;
       forceSSL = true;
-- 
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