From b1cff18da30978652b1b54c88330c099794430c3 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Fri, 7 Jan 2022 01:09:31 +0100
Subject: vidhar: loki: ...

---
 hosts/vidhar/default.nix | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/hosts/vidhar/default.nix b/hosts/vidhar/default.nix
index 5665c419..9bc33077 100644
--- a/hosts/vidhar/default.nix
+++ b/hosts/vidhar/default.nix
@@ -178,6 +178,17 @@
             };
           };
         };
+        ruler = {
+          storage = {
+            type = "local";
+            local.directory = "/etc/loki/rules";
+          };
+          remote_write = {
+            enabled = true;
+            client.url = "http://localhost:9090/api/v1/write";
+          };
+          ring.kvstore.store = "inmemory";
+        };
         schema_config.configs = [
           { from = "2022-01-01";
             store = "boltdb-shipper";
@@ -191,6 +202,20 @@
         ];
       };
     };
+    environment.etc."loki/rules/rules.yml".text = lib.generators.toYAML {} {
+      groups = [
+        { name = "power-failures";
+          rules = [
+            { record = "apcupsd_power_failures:rate_1d";
+              expr = "sum by (nodename) (rate({job=\"systemd-journal\"} | json | MESSAGE = \"Power failure.\"[1d])) * 86400";
+            }
+            { record = "apcupsd_power_failures:per_week";
+              expr = "sum by (nodename) (rate({job=\"systemd-journal\"} | json | MESSAGE = \"Power failure.\"[1w])) * 604800";
+            }
+          ];
+        };
+      ];
+    };
     services.promtail = {
       enable = true;
       configuration = {
-- 
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