initial

defaults.yaml

+---
+loki:
+  server:
+    install_dir: /opt
+    config:
+      auth_enabled: false
+      server:
+        http_listen_port: 3100
+      ingester:
+        lifecycler:
+          address: 127.0.0.1
+          ring:
+            kvstore:
+              store: inmemory
+            replication_factor: 1
+          final_sleep: 0s
+        chunk_idle_period: 5m
+        chunk_retain_period: 30s
+      schema_config:
+        configs:
+          - from: 2018-04-15
+            store: boltdb
+            object_store: filesystem
+            schema: v9
+            index:
+              prefix: index_
+              period: 168h
+      storage_config:
+        boltdb:
+          directory: /var/lib/loki/index
+        filesystem:
+          directory: /var/lib/loki/chunks
+      limits_config:
+        enforce_metric_name: false
+        reject_old_samples: true
+        reject_old_samples_max_age: 168h
+      chunk_store_config:
+        max_look_back_period: 0
+      table_manager:
+        chunk_tables_provisioning:
+          inactive_read_throughput: 0
+          inactive_write_throughput: 0
+          provisioned_read_throughput: 0
+          provisioned_write_throughput: 0
+        index_tables_provisioning:
+          inactive_read_throughput: 0
+          inactive_write_throughput: 0
+          provisioned_read_throughput: 0
+          provisioned_write_throughput: 0
+        retention_deletes_enabled: false
+        retention_period: 0
+
+  promtail:
+    install_dir: /opt
+    config:
+      server:
+        http_listen_port: 9080
+        grpc_listen_port: 0
+      positions:
+        filename: /opt/promtail/positions.yaml
+      clients:
+        - url: http://localhost:3100/api/prom/push
+      scrape_configs:
+        - job_name: journal
+          journal:
+            path: /run/log/journal
+            labels:
+              job: systemd-journal
+          relabel_configs:
+            - source_labels: ['__journal__systemd_unit']
+              target_label: 'unit'
+...

init.sls

+{% from "loki/map.jinja" import loki with context %}
+include:
+  {%- if loki.server.enable %}
+  - loki.server
+  {%- endif %}
+  {%- if loki.promtail.enable %}
+  - loki.promtail
+  {%- endif %}
+

map.jinja

+{% import_yaml "loki/defaults.yaml" as default_settings %}
+{% set loki = salt['pillar.get'](
+    'loki',
+    default=default_settings.loki,
+    merge=True)
+%}
+

promtail.sls

+{% from "loki/map.jinja" import loki with context %}
+
+promtail:
+  user.present:
+    - fullname: promtail daemon
+    - group: root
+    - system: True
+
+promtail_install_dir:
+  file.directory:
+    - name: "{{ loki.promtail.install_dir }}/promtail"
+    - user: root
+    - group: root
+    - mode: 0755
+
+promtail_binary:
+  file.managed:
+    - name: "{{ loki.promtail.install_dir }}/promtail/promtail"
+    - user: root
+    - group: root
+    - mode: '0755'
+    - source: "{{ loki.promtail.source }}"
+
+promtail_service_file:
+  file.managed:
+    - name: /etc/systemd/system/promtail.service
+    - replace: False
+    - user: root
+    - group: root
+    - mode: '0644'
+
+/etc/systemd/system/promtail.service:
+  ini.options_present:
+    - separator: '='
+    - strict: True
+    - sections:
+        Unit:
+          Description: Promtail Server
+          After: network-online.target
+        Service:
+          User: loki
+          Restart: on-failure
+          ExecStart: {{ loki.promtail.install_dir }}/promtail/promtail -config.file {{ loki.promtail.install_dir }}/promtail/promtail.yml
+        Install:
+          WantedBy: multi-user.target
+
+{{ loki.promtail.install_dir }}/promtail/promtail.yml:
+  file.serialize:
+    - dataset:
+        {{ loki.promtail.config | yaml() | indent(8) }}
+    - formatter: yaml
+    - user: root
+    - group: root
+    - mode: '0644'

server.sls

+{% from "loki/map.jinja" import loki with context %}
+
+loki:
+  user.present:
+    - fullname: loki daemon
+    - system: True
+
+loki_install_dir:
+  file.directory:
+    - name: "{{ loki.server.install_dir }}/loki"
+    - user: loki
+    - group: loki
+
+loki_binary:
+  file.managed:
+    - name: "{{ loki.server.install_dir }}/loki/loki"
+    - user: root
+    - group: root
+    - mode: '0755'
+    - source: "{{ loki.server.source }}"
+
+loki_service_file:
+  file.managed:
+    - name: /etc/systemd/system/loki.service
+    - replace: False
+    - user: root
+    - group: root
+    - mode: '0644'
+
+/etc/systemd/system/loki.service:
+  ini.options_present:
+    - separator: '='
+    - strict: True
+    - sections:
+        Unit:
+          Description: Loki Server
+          After: network-online.target
+        Service:
+          User: loki
+          Restart: on-failure
+          ExecStart: {{ loki.server.install_dir }}/loki/loki -config.file {{ loki.server.install_dir }}/loki/loki.yml
+        Install:
+          WantedBy: multi-user.target
+
+{{ loki.server.install_dir }}/loki/loki.yml:
+  file.serialize:
+    - dataset:
+        {{ loki.server.config | yaml() | indent(8) }}
+    - formatter: yaml
+    - user: root
+    - group: root
+    - mode: '0644'