From 1c7ecec6abe2c8cd36c8e79f85d1f71e43a58516 Mon Sep 17 00:00:00 2001
From: Schneider Roland <roland.schneider@extern.a1.at>
Date: Sun, 27 Oct 2024 10:50:14 +0100
Subject: [PATCH] loki: add

---
 loki/docker-compose/loki/docker-compose.yaml  | 22 ++++++++
 loki/docker-compose/loki/loki-config.yaml     | 50 +++++++++++++++++++
 loki/docker-compose/loki/promtail-config.yaml | 18 +++++++
 loki/jenkins/Jenkinsfile                      | 26 ++++++++++
 4 files changed, 116 insertions(+)
 create mode 100644 loki/docker-compose/loki/docker-compose.yaml
 create mode 100644 loki/docker-compose/loki/loki-config.yaml
 create mode 100644 loki/docker-compose/loki/promtail-config.yaml
 create mode 100644 loki/jenkins/Jenkinsfile

diff --git a/loki/docker-compose/loki/docker-compose.yaml b/loki/docker-compose/loki/docker-compose.yaml
new file mode 100644
index 0000000..85b5bab
--- /dev/null
+++ b/loki/docker-compose/loki/docker-compose.yaml
@@ -0,0 +1,22 @@
+version: '3.8'
+
+services:
+  loki:
+    image: grafana/loki:3.0.0                       # Specifies the Loki Docker image and version.
+    container_name: loki                            # Names the container for easier management.
+    volumes:
+      - ./loki-config.yaml:/mnt/config/loki-config.yaml # Mounts the Loki configuration file.
+      - ./data:/tmp
+    ports:
+      - "3100:3100"                                 # Maps port 3100 on the host to port 3100 in the container.
+    command: -config.file=/mnt/config/loki-config.yaml # Runs Loki with the specified configuration file.
+
+  promtail:
+    image: grafana/promtail:3.0.0                   # Specifies the Promtail Docker image and version.
+    container_name: promtail                        # Names the container for easier management.
+    volumes:
+      - ./promtail-config.yaml:/mnt/config/promtail-config.yaml # Mounts the Promtail configuration file.
+      - /var/log:/var/log                           # Mounts the host's log directory.
+    depends_on:
+      - loki                                       # Ensures Promtail starts after Loki.
+    command: -config.file=/mnt/config/promtail-config.yaml # Runs Promtail with the specified configuration file.
diff --git a/loki/docker-compose/loki/loki-config.yaml b/loki/docker-compose/loki/loki-config.yaml
new file mode 100644
index 0000000..694f303
--- /dev/null
+++ b/loki/docker-compose/loki/loki-config.yaml
@@ -0,0 +1,50 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+  grpc_listen_port: 9096
+
+common:
+  instance_addr: 127.0.0.1
+  path_prefix: /tmp/loki
+  storage:
+    filesystem:
+      chunks_directory: /tmp/loki/chunks
+      rules_directory: /tmp/loki/rules
+  replication_factor: 1
+  ring:
+    kvstore:
+      store: inmemory
+
+query_range:
+  results_cache:
+    cache:
+      embedded_cache:
+        enabled: true
+        max_size_mb: 100
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: tsdb
+      object_store: filesystem
+      schema: v13
+      index:
+        prefix: index_
+        period: 24h
+
+ruler:
+  alertmanager_url: http://localhost:9093
+
+# By default, Loki will send anonymous, but uniquely-identifiable usage and configuration
+# analytics to Grafana Labs. These statistics are sent to https://stats.grafana.org/
+#
+# Statistics help us better understand how Loki is used, and they show us performance
+# levels for most users. This helps us prioritize features and documentation.
+# For more information on what's sent, look at
+# https://github.com/grafana/loki/blob/main/pkg/analytics/stats.go
+# Refer to the buildReport method to see what goes into a report.
+#
+# If you would like to disable reporting, uncomment the following lines:
+analytics:
+  reporting_enabled: false
diff --git a/loki/docker-compose/loki/promtail-config.yaml b/loki/docker-compose/loki/promtail-config.yaml
new file mode 100644
index 0000000..ed06e8c
--- /dev/null
+++ b/loki/docker-compose/loki/promtail-config.yaml
@@ -0,0 +1,18 @@
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/positions.yaml
+
+clients:
+  - url: http://loki:3100/loki/api/v1/push
+
+scrape_configs:
+- job_name: system
+  static_configs:
+  - targets:
+      - localhost
+    labels:
+      job: varlogs
+      __path__: /var/log/*log
diff --git a/loki/jenkins/Jenkinsfile b/loki/jenkins/Jenkinsfile
new file mode 100644
index 0000000..474139d
--- /dev/null
+++ b/loki/jenkins/Jenkinsfile
@@ -0,0 +1,26 @@
+pipeline {
+    agent any
+
+    stages {
+        stage('Git pull && docker compose restart') {
+            steps {
+                sshPublisher(publishers: [sshPublisherDesc(configName: 'infra.1', transfers: [sshTransfer(cleanRemote: false, excludes: '', execCommand: '''cd /home/rschneider/infra
+                git pull
+                cd /home/rschneider/infra/loki/docker-compose/loki
+                docker compose down
+                docker compose up -d
+                ''', execTimeout: 120000,
+                flatten: false,
+                makeEmptyDirs: false,
+                noDefaultExcludes: false,
+                patternSeparator: '[, ]+',
+                remoteDirectory: '',
+                remoteDirectorySDF: false,
+                removePrefix: '', sourceFiles: '')],
+                usePromotionTimestamp: false,
+                useWorkspaceInPromotion: false,
+                verbose: true)])
+            }
+        }
+    }
+}