Automation Orchestrator install and tweaks

roles/sno_alert_tuning/defaults/main.yml

@@ -0,0 +1,13 @@
+---
+# Platform alerts that are false positives on a single-control-plane cluster.
+# Dropped via an AlertRelabelConfig (monitoring.openshift.io/v1), so they never
+# reach Alertmanager. Alerts are matched by exact alertname.
+#
+# KubeCPUOvercommit / KubeMemoryOvercommit: the HA branch of these rules assumes
+# the cluster survives losing its largest node. With one control-plane node plus
+# smaller workers, that node is master-0 — losing it loses the cluster anyway.
+sno_alert_tuning_dropped_alerts:
+  - KubeCPUOvercommit
+  - KubeMemoryOvercommit
+
+sno_alert_tuning_config_name: sno-single-control-plane