From eda94c0415da6462750e0ee3a19858f03d8bd8fe Mon Sep 17 00:00:00 2001
From: Emile <git@emile.space>
Date: Thu, 19 Sep 2024 22:08:09 +0200
Subject: grafana prometheus loki promtail foo

---
 nix/hosts/corrino/www/promtail.emile.space.nix | 114 +++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 nix/hosts/corrino/www/promtail.emile.space.nix

(limited to 'nix/hosts/corrino/www/promtail.emile.space.nix')

diff --git a/nix/hosts/corrino/www/promtail.emile.space.nix b/nix/hosts/corrino/www/promtail.emile.space.nix
new file mode 100644
index 0000000..7205bf9
--- /dev/null
+++ b/nix/hosts/corrino/www/promtail.emile.space.nix
@@ -0,0 +1,114 @@
+{ config, ... }:
+
+{
+  # allow the promtail user to read the nginx access files
+  users.users.promtail.extraGroups = [ "nginx" ];
+
+  services = {
+    promtail = {
+      enable = true;
+      configuration = {
+        server = {
+          http_listen_port = config.emile.ports.promtail;
+          grpc_listen_port = 0;
+        };
+        positions.filename = "/tmp/positions.yml";
+        clients = [{
+          url = "http://localhost:${toString config.services.loki.configuration.server.http_listen_port}/loki/api/v1/push";
+        }];
+        scrape_configs = [
+
+          # systemd
+          {
+            job_name = "journal";
+            journal = {
+              max_age = "12h";
+              labels = {
+                job = "systemd-journal";
+                host = config.networking.hostName;
+              };
+            };
+            relabel_configs = [
+              {
+                source_labels = [ "__journal__systemd_unit" ];
+                target_label = "unit";
+              }
+            ];
+          }
+
+          # nginx error log
+          {
+            job_name = "nginx-error-logs";
+            static_configs = [{
+              targets = [ "localhost" ];
+              labels = {
+                job = "nginx-error-logs";
+                host = "corrino";
+                __path__ = "/var/log/nginx/*error.log";
+              };
+            }];
+          }
+
+          # nginx
+          {
+            job_name = "nginx";
+            static_configs = [
+              {
+                targets = [ "localhost" ];
+                labels = {
+                  job = "nginx";
+                  host = "corrino";
+                  __path__ = "/var/log/nginx/*access.log";
+                };   
+              }
+            ];
+            pipeline_stages = [
+              # {
+              #   regex = {
+              #     expression = "(?:[0-9]{1,3}\.){3}([0-9]{1,3})";
+              #     replace = "***";
+              #   };
+              # }
+              {
+                regex = {
+                  expression = ''(?P<remote_addr>.+) - - \[(?P<time_local>.+)\] "(?P<method>.+) (?P<url>.+) (HTTP\/(?P<version>\d.\d))" (?P<status>\d{3}) (?P<body_bytes_sent>\d+) (["](?P<http_referer>(\-)|(.+))["]) (["](?P<http_user_agent>.+)["])'';
+                };
+              }
+              {
+                labels = {
+                  remote_addr = null;
+                  time_local = null;
+                  method = null;
+                  url = null;
+                  status = null;
+                  body_bytes_sent = null;
+                  http_referer = null;
+                  http_user_agent = null;
+                };
+              }
+              # {
+              #   timestamp = {
+              #     source = "time_local";
+              #     format = "02/Jan/2006:15:04:05 -0700";
+              #   };
+              # }
+              {
+                drop = {
+                  source = "url";
+                  expression = ''/(_matrix|.well-known|notifications|api|identity).*'';
+                };
+              }
+              {
+                drop = {
+                  source = "url";
+                  expression = ''grafana.*'';
+                };
+              }
+            ];
+          }
+
+        ];
+      };
+    };
+  };
+}
-- 
cgit 1.4.1