From 69c4138459c39e9e6503f66062e04d88704b623d Mon Sep 17 00:00:00 2001
From: Simon Bruder <simon@sbruder.de>
Date: Tue, 20 Aug 2024 12:15:39 +0200
Subject: [PATCH] renge/prometheus: Use common relabel config for VPN

---
 machines/renge/services/prometheus.nix | 41 ++++++++------------------
 1 file changed, 12 insertions(+), 29 deletions(-)

diff --git a/machines/renge/services/prometheus.nix b/machines/renge/services/prometheus.nix
index c10866d..68fd331 100644
--- a/machines/renge/services/prometheus.nix
+++ b/machines/renge/services/prometheus.nix
@@ -8,6 +8,12 @@ let
 
   mkStaticTargets = targets: lib.singleton { inherit targets; };
   mkStaticTarget = target: mkStaticTargets (lib.singleton target);
+
+  relabelVpnConfig = {
+    target_label = "instance";
+    source_labels = lib.singleton "__address__";
+    regex = "(.*)\\.vpn\\.sbruder\\.de:[0-9]*";
+  };
 in
 {
   services.prometheus = {
@@ -77,11 +83,7 @@ in
           "yuzuru.vpn.sbruder.de:9100"
           "koyomi.vpn.sbruder.de:9100"
         ];
-        relabel_configs = lib.singleton {
-          target_label = "instance";
-          source_labels = lib.singleton "__address__";
-          regex = "(.*)\\.vpn\\.sbruder\\.de:9100";
-        };
+        relabel_configs = lib.singleton relabelVpnConfig;
       }
       {
         job_name = "smartctl";
@@ -93,11 +95,7 @@ in
           "shinobu.vpn.sbruder.de:9633"
           "koyomi.vpn.sbruder.de:9633"
         ];
-        relabel_configs = lib.singleton {
-          target_label = "instance";
-          source_labels = lib.singleton "__address__";
-          regex = "(.*)\\.vpn\\.sbruder\\.de:9633";
-        };
+        relabel_configs = lib.singleton relabelVpnConfig;
       }
       {
         job_name = "qbittorrent";
@@ -105,11 +103,7 @@ in
           "fuuko.vpn.sbruder.de:9561"
           "nazuna.vpn.sbruder.de:9561"
         ];
-        relabel_configs = lib.singleton {
-          target_label = "instance";
-          source_labels = lib.singleton "__address__";
-          regex = "(.*)\\.vpn\\.sbruder\\.de:9561";
-        };
+        relabel_configs = lib.singleton relabelVpnConfig;
       }
       (
         let
@@ -128,10 +122,7 @@ in
       {
         job_name = "dnsmasq";
         static_configs = mkStaticTarget "shinobu.vpn.sbruder.de:${toString config.services.prometheus.exporters.dnsmasq.port}";
-        relabel_configs = lib.singleton {
-          target_label = "instance";
-          replacement = "shinobu";
-        };
+        relabel_configs = lib.singleton relabelVpnConfig;
       }
       {
         job_name = "hcloud";
@@ -158,11 +149,7 @@ in
           "okarin.vpn.sbruder.de:9433"
           "yuzuru.vpn.sbruder.de:9433"
         ];
-        relabel_configs = lib.singleton {
-          target_label = "instance";
-          source_labels = lib.singleton "__address__";
-          regex = "(.*)\\.vpn\\.sbruder\\.de:9433";
-        };
+        relabel_configs = lib.singleton relabelVpnConfig;
       }
       {
         job_name = "snmp";
@@ -193,11 +180,7 @@ in
         static_configs = mkStaticTargets [
           "koyomi.vpn.sbruder.de:8404"
         ];
-        relabel_configs = lib.singleton {
-          target_label = "instance";
-          source_labels = lib.singleton "__address__";
-          regex = "(.*)\\.vpn\\.sbruder\\.de:8404";
-        };
+        relabel_configs = lib.singleton relabelVpnConfig;
       }
     ];