From 2f89d37b298f19b27066245152d1bfbe241cd711 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@devalot.com>
Date: Fri, 5 Jul 2019 15:20:55 -0700
Subject: [PATCH] monitoring: Switch to Prometheus, add client vs. server

---
 modules/services/monitoring/client.nix  | 31 +++++++++++++
 modules/services/monitoring/default.nix | 59 ++-----------------------
 2 files changed, 35 insertions(+), 55 deletions(-)
 create mode 100644 modules/services/monitoring/client.nix

diff --git a/modules/services/monitoring/client.nix b/modules/services/monitoring/client.nix
new file mode 100644
index 0000000..6f5d8f9
--- /dev/null
+++ b/modules/services/monitoring/client.nix
@@ -0,0 +1,31 @@
+# Configure monitoring and reporting services.
+{ config, lib, pkgs, ...}:
+
+# Bring in library functions:
+with lib;
+
+let
+  cfg = config.phoebe.services.monitoring.client;
+
+in
+{
+  #### Interface
+  options.phoebe.services.monitoring.client = {
+    enable = mkEnableOption "Export Metrics for Prometheus.";
+  };
+
+  #### Implementation
+  config = mkIf cfg.enable {
+    # Enable systemd accounting:
+    systemd.enableCgroupAccounting = true;
+
+    # Prometheus node exporter:
+    services.prometheus.exporters.node = {
+      enable = true;
+      enabledCollectors = [
+        "systemd"
+        "logind"
+      ];
+    };
+  };
+}
diff --git a/modules/services/monitoring/default.nix b/modules/services/monitoring/default.nix
index b208d53..707607b 100644
--- a/modules/services/monitoring/default.nix
+++ b/modules/services/monitoring/default.nix
@@ -1,58 +1,7 @@
-# Configure monitoring and reporting services.
-{ config, lib, pkgs, ...}:
+{ ... }:
 
-# Bring in library functions:
-with lib;
-
-let
-  cfg = config.phoebe.services.monitoring;
-
-  alarmNotifyConf = pkgs.writeText "health_alarm_notify.conf"
-    (optionalString cfg.pushover.enable ''
-      SEND_PUSHOVER=YES
-      PUSHOVER_APP_TOKEN="${cfg.pushover.apiKey}"
-      DEFAULT_RECIPIENT_PUSHOVER="${concatStringsSep "," cfg.pushover.userKeys}"
-    '');
-in
 {
-  #### Interface
-  options.phoebe.services.monitoring = {
-    enable = mkEnableOption "Monitoring and Reporting.";
-
-    pushover = {
-      enable = mkEnableOption "Alerts via Pushover.";
-      apiKey = mkOption {
-        type = types.str;
-        example = "1234567890abcdefghijklmnopqrst";
-        description = "Pushover API key for netdata";
-      };
-      userKeys = mkOption {
-        type = types.listOf types.str;
-        example = [ "1234567890abcdefghijklmnopqrst" ];
-        description = "List of user keys.";
-      };
-    };
-  };
-
-  #### Implementation
-  config = mkIf cfg.enable {
-    # Enable systemd accounting:
-    systemd.enableCgroupAccounting = true;
-
-    # Use netdata to collect metrics:
-    services.netdata = {
-      enable = true;
-
-      config.global = {
-        "debug log"  = "syslog";
-        "access log" = "syslog";
-        "error log"  = "syslog";
-      };
-    };
-
-    environment.etc."netdata/health_alarm_notify.conf" = {
-      source = "${alarmNotifyConf}";
-      mode   = "0444";
-    };
-  };
+  imports = [
+    ./client.nix
+  ];
 }