promtail: Move hard-coded config to prometheus_agent.agents.promtail.config inventory key

defaults/main.yml

@@ -43,6 +43,49 @@ prometheus_agent:
       jobs: {}
     promtail:
       enable: False
+      config:
+        server:
+          disable: true
+          http_listen_port: 9080
+          grpc_listen_port: 0
+        positions:
+          filename: /var/lib/promtail/positions.yaml
+        # clients is generated based on prometheus_agent.scrapers
+        scrape_configs:
+        - job_name: system
+          static_configs:
+          - targets:
+              - localhost
+            labels:
+              job: varlogs
+              __path__: /var/log/*log
+        - job_name: journal
+          journal:
+            max_age: 12h
+            labels:
+              job: systemd-journal
+          relabel_configs:
+            - source_labels: ['__journal__systemd_unit']
+              target_label: 'unit'
+            - source_labels: ['__journal_priority_keyword']
+              target_label: 'level'
+          pipeline_stages:
+            - structured_metadata:
+                level:
+        - job_name: nginx
+          static_configs:
+          - targets:
+              - localhost
+            labels:
+              job: nginx
+              __path__: /var/log/nginx/access-promtail.log
+        - job_name: postfix-bounces
+          static_configs:
+          - targets:
+              - localhost
+            labels:
+              job: postfix-bounces
+              __path__: /var/log/mailman3/bounce.log
     snmp:
       enable: False
       mib_path: /usr/share/snmp/mibs