chore: replace control-plane and partition promtail with alloy (#298)

Author: ma-hartma

deploy_partition.yaml

@@ -119,9 +119,9 @@
   roles:
     - name: ansible-common
       tags: always
-    - name: metal-roles/partition/roles/promtail
+    - name: metal-roles/partition/roles/alloy
       when: monitoring_enabled
-      tags: promtail
+      tags: alloy
     - name: metal-roles/partition/roles/monitoring/node-exporter
       when: monitoring_enabled
       tags: node-exporter

inventories/group_vars/control_plane/logging.yaml

@@ -1,2 +1,14 @@
 ---
 logging_ingress_loki_tls: no
+logging_ingress_dns: "loki.{{ metal_control_plane_ingress_dns }}"
+
+logging_alloy_enabled: true
+
+logging_alloy_service_monitor_enabled: true
+
+logging_alloy_loki_write_endpoints:
+  - url: "http://{{ logging_ingress_dns }}:8080/loki/api/v1/push"
+
+logging_promtail_enabled: false
+
+logging_alloy_cluster_label: "mini-lab"

inventories/group_vars/control_plane/monitoring.yaml

@@ -10,3 +10,5 @@ monitoring_thanos_receive_ingress_enabled: true
 monitoring_thanos_receive_size: 5Gi
 
 monitoring_prometheus_core_dns_enabled: true
+
+event_exporter_enabled: false

inventories/group_vars/leaves/alloy.yaml

@@ -0,0 +1,2 @@
+alloy_config_snippets:
+  - journal

inventories/group_vars/partition/alloy.yaml

@@ -0,0 +1,2 @@
+alloy_loki_write_endpoints:
+  - url: "http://loki.{{ metal_control_plane_ingress_dns }}:8080/loki/api/v1/push"

inventories/group_vars/partition/monitoring.yaml

@@ -6,3 +6,6 @@ monitoring_sonic_exporter_port: 9101
 
 # IPMI should use the same credentials as metal-api
 monitoring_ipmi_bmc_superuser_pwd: "{{ metal_api_bmc_superuser_pwd }}"
+
+# alloy metrics
+monitoring_alloy_port: 12345

inventories/group_vars/partition/prometheus.yaml

@@ -28,4 +28,8 @@ prometheus_hosts_content: |
   {{ hostvars['leaf01'].ansible_host }} leaf01
   {{ hostvars['leaf02'].ansible_host }} leaf02
 
+prometheus_alloy_targets:
+  - "leaf01:{{ monitoring_alloy_port }}"
+  - "leaf02:{{ monitoring_alloy_port }}"
+
 prometheus_haproxy_enabled: false