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|
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
name: freebsd-zfs-rules
namespace: monitoring
labels:
release: prometheus
spec:
groups:
# FreeBSD ZFS ARC metrics - calculated values for easier dashboard consumption
- name: freebsd-zfs-arc
interval: 30s
rules:
# ARC Hit Rate (percentage)
# Rate of hits divided by total requests (hits + misses)
- record: node_zfs_arc_hit_rate_percent
expr: |
100 * (
rate(node_zfs_arcstats_hits_total{os="freebsd"}[5m]) /
(rate(node_zfs_arcstats_hits_total{os="freebsd"}[5m]) +
rate(node_zfs_arcstats_misses_total{os="freebsd"}[5m]))
)
labels:
os: freebsd
# ARC Memory Usage Percentage (current size vs maximum)
- record: node_zfs_arc_memory_usage_percent
expr: |
100 * (
node_zfs_arcstats_size_bytes{os="freebsd"} /
node_zfs_arcstats_c_max_bytes{os="freebsd"}
)
labels:
os: freebsd
# ARC Target vs Max Ratio (how close to maximum target is)
- record: node_zfs_arc_target_percent
expr: |
100 * (
node_zfs_arcstats_c_bytes{os="freebsd"} /
node_zfs_arcstats_c_max_bytes{os="freebsd"}
)
labels:
os: freebsd
# ARC Metadata Percentage (metadata vs total ARC size)
- record: node_zfs_arc_metadata_percent
expr: |
100 * (
node_zfs_arcstats_meta_bytes{os="freebsd"} /
node_zfs_arcstats_size_bytes{os="freebsd"}
)
labels:
os: freebsd
# ARC Data Percentage (data vs total ARC size)
- record: node_zfs_arc_data_percent
expr: |
100 * (
node_zfs_arcstats_data_bytes{os="freebsd"} /
node_zfs_arcstats_size_bytes{os="freebsd"}
)
labels:
os: freebsd
# MFU Percentage (Most Frequently Used vs total ARC)
- record: node_zfs_arc_mfu_percent
expr: |
100 * (
node_zfs_arcstats_mfu_bytes{os="freebsd"} /
node_zfs_arcstats_size_bytes{os="freebsd"}
)
labels:
os: freebsd
# MRU Percentage (Most Recently Used vs total ARC)
- record: node_zfs_arc_mru_percent
expr: |
100 * (
node_zfs_arcstats_mru_bytes{os="freebsd"} /
node_zfs_arcstats_size_bytes{os="freebsd"}
)
labels:
os: freebsd
# Demand Data Hit Rate (percentage)
- record: node_zfs_arc_demand_data_hit_rate_percent
expr: |
100 * (
rate(node_zfs_arcstats_demand_data_hits_total{os="freebsd"}[5m]) /
(rate(node_zfs_arcstats_demand_data_hits_total{os="freebsd"}[5m]) +
rate(node_zfs_arcstats_demand_data_misses_total{os="freebsd"}[5m]))
)
labels:
os: freebsd
# Demand Metadata Hit Rate (percentage)
- record: node_zfs_arc_demand_metadata_hit_rate_percent
expr: |
100 * (
rate(node_zfs_arcstats_demand_metadata_hits_total{os="freebsd"}[5m]) /
(rate(node_zfs_arcstats_demand_metadata_hits_total{os="freebsd"}[5m]) +
rate(node_zfs_arcstats_demand_metadata_misses_total{os="freebsd"}[5m]))
)
labels:
os: freebsd
|
