Use Grafana's upstream Debian packages for loki

tasks/main.yml

@@ -1,12 +1,32 @@
-- name: install grafana-loki
-  package:
-    name: grafana-loki
+- name: setup grafana repo key for loki
+  apt_key:
+    url: "https://apt.grafana.com/gpg.key"
 
-- name: write grafana-loki config
-  notify: restart grafana-loki
+- name: setup grafana repo for loki
+  apt_repository:
+    repo: "deb https://apt.grafana.com stable main"
+
+- name: create loki group
+  group:
+    name: loki
+    system: true
+
+- name: create loki user
+  user:
+    name: loki
+    system: true
+    group: loki
+    home: /var/lib/loki
+
+- name: install loki
+  package:
+    name: loki
+
+- name: write loki config
+  notify: restart loki
   copy:
     owner: root
-    group: grafana-loki
+    group: loki
     mode: 0640
-    dest: /etc/grafana-loki.yml
+    dest: /etc/loki/config.yml
     content: "{{ loki.config|to_nice_yaml(indent=2) }}"