apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: freebsd-memory-rules
  namespace: monitoring
  labels:
    release: prometheus
spec:
  groups:
    # FreeBSD memory metrics mapped to Linux-compatible names
    - name: freebsd-memory
      rules:
        # Synthetic MemTotal for FreeBSD (maps to size_bytes)
        - record: node_memory_MemTotal_bytes
          expr: node_memory_size_bytes{os="freebsd"}
          labels:
            os: freebsd

        # Synthetic MemAvailable for FreeBSD
        # Available = free + inactive + cache (approximation)
        - record: node_memory_MemAvailable_bytes
          expr: node_memory_free_bytes{os="freebsd"} + node_memory_inactive_bytes{os="freebsd"} + node_memory_cache_bytes{os="freebsd"}
          labels:
            os: freebsd

        # Synthetic MemFree for FreeBSD
        - record: node_memory_MemFree_bytes
          expr: node_memory_free_bytes{os="freebsd"}
          labels:
            os: freebsd

        # Synthetic Buffers for FreeBSD
        - record: node_memory_Buffers_bytes
          expr: node_memory_buffer_bytes{os="freebsd"}
          labels:
            os: freebsd

        # Synthetic Cached for FreeBSD
        - record: node_memory_Cached_bytes
          expr: node_memory_cache_bytes{os="freebsd"}
          labels:
            os: freebsd