logging

lotus-land-story/caddy.yml

@@ -22,6 +22,7 @@
     - name: Run caddy
       community.docker.docker_compose:
         project_name: caddy
+        remove_orphans: true
         definition:
           version: "3.3"
           services:

lotus-land-story/docker.yml

@@ -45,6 +45,12 @@
           - docker-compose-plugin
         update_cache: true
 
+    - name: Install Loki Docker driver
+      community.docker.docker_plugin:
+        plugin_name: grafana/loki-docker-driver
+        alias: loki
+        state: enable
+
     - name: Create Docker volume location
       ansible.builtin.file:
         path: /mnt/lotus-land-story/docker

lotus-land-story/grafana.yml

@@ -10,16 +10,18 @@
       loop:
         - datasources
 
-    - name: Configure grafana
+    - name: Configure Grafana
       ansible.builtin.copy:
         dest: /mnt/lotus-land-story/grafana/grafana.ini
         content: |
           [metrics]
           enabled             = true
           disable_total_stats = false
+          [server]
+          domain = grafana.{{ domain }}
         mode: "0644"
 
-    - name: Provision Grafana
+    - name: Provision Prometheus
       ansible.builtin.copy:
         dest: /mnt/lotus-land-story/grafana/provisioning/datasources/prometheus.yml
         content: |

lotus-land-story/loki.yml

@@ -0,0 +1,87 @@
+# https://raw.githubusercontent.com/grafana/loki/v2.8.0/production/docker-compose.yaml
+# https://grafana.com/docs/loki/latest/clients/docker-driver/
+
+- name: Set up Loki
+  hosts: lotus-land-story
+  tasks:
+
+    - name: Provision Grafana
+      ansible.builtin.copy:
+        dest: /mnt/lotus-land-story/grafana/provisioning/datasources/loki.yml
+        content: |
+          apiVersion: 1
+
+          datasources:
+            - name: Loki
+              type: loki
+              access: proxy
+              url: http://host.docker.internal:3100
+        mode: "0644"
+
+    - name: Create Loki config dirs
+      ansible.builtin.file:
+        path: /mnt/lotus-land-story/loki/{{ item }}
+        state: directory
+        mode: "0755"
+      loop:
+        - config
+        - data
+
+    - name: Configure Loki
+      ansible.builtin.copy:
+        dest: /mnt/lotus-land-story/loki/config/config.yml
+        content: |
+          auth_enabled: false
+
+          server:
+            http_listen_port: 3100
+
+          common:
+            path_prefix: /loki
+            storage:
+              filesystem:
+                chunks_directory: /loki/chunks
+                rules_directory: /loki/rules
+            replication_factor: 1
+            ring:
+              kvstore:
+                store: inmemory
+
+          schema_config:
+            configs:
+              - from: 2020-10-24
+                store: boltdb-shipper
+                object_store: filesystem
+                schema: v11
+                index:
+                  prefix: index_
+                  period: 24h
+
+          storage_config:
+            filesystem:
+              directory: /data
+
+          ruler:
+            alertmanager_url: http://localhost:9093
+        mode: "0644"
+
+    - name: Run Loki
+      community.docker.docker_compose:
+        project_name: loki
+        remove_orphans: true
+        definition:
+          version: "3.3"
+          services:
+            loki:
+              image: grafana/loki:2.8.0
+              ports:
+                - "3100:3100"
+              command: -config.file=/mnt/config/config.yml
+              volumes:
+                - /mnt/lotus-land-story/loki/config:/mnt/config
+                - /mnt/lotus-land-story/loki/data:/data
+              restart: unless-stopped
+              extra_hosts:
+                - "host.docker.internal:host-gateway"
+
+# vim: ft=yaml.ansible

lotus-land-story/main.tf

@@ -57,7 +57,7 @@ resource "linode_domain_record" "subdomains" {
   record_type = "A"
   target      = resource.linode_instance.lotus_land_story.ip_address
 
-  for_each = toset(["rss", "prometheus", "grafana"])
+  for_each = toset(["rss", "prometheus", "grafana", "loki"])
   name = each.key
 }
 

lotus-land-story/miniflux.yml

@@ -49,6 +49,7 @@
     - name: Run miniflux
       community.docker.docker_compose:
         project_name: miniflux
+        remove_orphans: true
         definition:
           version: "3.3"
           services:

lotus-land-story/templates/Caddyfile

@@ -13,3 +13,7 @@ prometheus.{{ domain }} {
 grafana.{{ domain }} {
 	reverse_proxy host.docker.internal:3000
 }
+
+loki.{{ domain }} {
+	reverse_proxy host.docker.internal:3100
+}

lotus-land-story/templates/daemon.json

@@ -1,4 +1,8 @@
 {
   "data-root": "/mnt/lotus-land-story/docker",
-  "metrics-addr": "{{ docker_ip.address }}:9323"
+  "metrics-addr": "{{ docker_ip.address }}:9323",
+  "log-driver": "loki",
+  "log-opts": {
+    "loki-url": "http://localhost:3100/loki/api/v1/push"
+  }
 }