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I have no idea how the code in node_exporter prometheus compiles.
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@mattdurham
mattdurham committed Oct 4, 2023
1 parent f491eb1 commit a372120
Showing 1 changed file with 2 additions and 98 deletions.
100 changes: 2 additions & 98 deletions collector/zfs_freebsd.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,13 +18,9 @@ package collector

import (
"fmt"
"strings"

"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/prometheus/client_golang/prometheus"

"golang.org/x/sys/unix"
)

type zfsCollector struct {
Expand All @@ -37,7 +33,7 @@ const (
)

func init() {
registerCollector(zfsCollectorSubsystem, defaultEnabled, NewZfsCollector)
registerCollector("zfs", defaultEnabled, NewZfsCollector)
}

func NewZfsCollector(config *NodeCollectorConfig, logger log.Logger) (Collector, error) {
Expand All @@ -49,253 +45,202 @@ func NewZfsCollector(config *NodeCollectorConfig, logger log.Logger) (Collector,
mib: "kstat.zfs.misc.abdstats.linear_cnt",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "abdstats_linear_data_bytes",
description: "ZFS ARC buffer data linear data size",
mib: "kstat.zfs.misc.abdstats.linear_data_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "abdstats_scatter_chunk_waste_bytes",
description: "ZFS ARC buffer data scatter chunk waste",
mib: "kstat.zfs.misc.abdstats.scatter_chunk_waste",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "abdstats_scatter_count_total",
description: "ZFS ARC buffer data scatter count",
mib: "kstat.zfs.misc.abdstats.scatter_cnt",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "abdstats_scatter_data_bytes",
description: "ZFS ARC buffer data scatter data size",
mib: "kstat.zfs.misc.abdstats.scatter_data_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "abdstats_struct_bytes",
description: "ZFS ARC buffer data struct size",
mib: "kstat.zfs.misc.abdstats.struct_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_anon_bytes",
description: "ZFS ARC anon size",
mib: "kstat.zfs.misc.arcstats.anon_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_c_bytes",
description: "ZFS ARC target size",
mib: "kstat.zfs.misc.arcstats.c",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_c_max_bytes",
description: "ZFS ARC maximum size",
mib: "kstat.zfs.misc.arcstats.c_max",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_c_min_bytes",
description: "ZFS ARC minimum size",
mib: "kstat.zfs.misc.arcstats.c_min",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_data_bytes",
description: "ZFS ARC data size",
mib: "kstat.zfs.misc.arcstats.data_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_demand_data_hits_total",
description: "ZFS ARC demand data hits",
mib: "kstat.zfs.misc.arcstats.demand_data_hits",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "arcstats_demand_data_misses_total",
description: "ZFS ARC demand data misses",
mib: "kstat.zfs.misc.arcstats.demand_data_misses",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "arcstats_demand_metadata_hits_total",
description: "ZFS ARC demand metadata hits",
mib: "kstat.zfs.misc.arcstats.demand_metadata_hits",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "arcstats_demand_metadata_misses_total",
description: "ZFS ARC demand metadata misses",
mib: "kstat.zfs.misc.arcstats.demand_metadata_misses",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "arcstats_hdr_bytes",
description: "ZFS ARC header size",
mib: "kstat.zfs.misc.arcstats.hdr_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_hits_total",
description: "ZFS ARC hits",
mib: "kstat.zfs.misc.arcstats.hits",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "arcstats_misses_total",
description: "ZFS ARC misses",
mib: "kstat.zfs.misc.arcstats.misses",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "arcstats_mfu_ghost_hits_total",
description: "ZFS ARC MFU ghost hits",
mib: "kstat.zfs.misc.arcstats.mfu_ghost_hits",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "arcstats_mfu_ghost_size",
description: "ZFS ARC MFU ghost size",
mib: "kstat.zfs.misc.arcstats.mfu_ghost_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_mfu_bytes",
description: "ZFS ARC MFU size",
mib: "kstat.zfs.misc.arcstats.mfu_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_mru_ghost_hits_total",
description: "ZFS ARC MRU ghost hits",
mib: "kstat.zfs.misc.arcstats.mru_ghost_hits",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "arcstats_mru_ghost_bytes",
description: "ZFS ARC MRU ghost size",
mib: "kstat.zfs.misc.arcstats.mru_ghost_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_mru_bytes",
description: "ZFS ARC MRU size",
mib: "kstat.zfs.misc.arcstats.mru_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_other_bytes",
description: "ZFS ARC other size",
mib: "kstat.zfs.misc.arcstats.other_size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
// when FreeBSD 14.0+, `meta/pm/pd` install of `p`.
{
name: "arcstats_p_bytes",
description: "ZFS ARC MRU target size",
mib: "kstat.zfs.misc.arcstats.p",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "arcstats_meta_bytes",
description: "ZFS ARC metadata target frac ",
mib: "kstat.zfs.misc.arcstats.meta",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
},
{
name: "arcstats_pd_bytes",
description: "ZFS ARC data MRU target frac",
mib: "kstat.zfs.misc.arcstats.pd",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
},
{
name: "arcstats_pm_bytes",
description: "ZFS ARC meta MRU target frac",
mib: "kstat.zfs.misc.arcstats.pm",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
},
{
name: "arcstats_size_bytes",
description: "ZFS ARC size",
mib: "kstat.zfs.misc.arcstats.size",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.GaugeValue,
labels: nil,
},
{
name: "zfetchstats_hits_total",
description: "ZFS cache fetch hits",
mib: "kstat.zfs.misc.zfetchstats.hits",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
{
name: "zfetchstats_misses_total",
description: "ZFS cache fetch misses",
mib: "kstat.zfs.misc.zfetchstats.misses",
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: nil,
},
},
logger: logger,
Expand All @@ -306,9 +251,7 @@ func (c *zfsCollector) Update(ch chan<- prometheus.Metric) error {
for _, m := range c.sysctls {
v, err := m.Value()
if err != nil {
// debug logging
level.Debug(c.logger).Log("name", m.name, "couldn't get sysctl:", err)
continue
return fmt.Errorf("couldn't get sysctl: %w", err)
}

ch <- prometheus.MustNewConstMetric(
Expand All @@ -321,42 +264,3 @@ func (c *zfsCollector) Update(ch chan<- prometheus.Metric) error {

return nil
}

func (c *zfsCollector) parseFreeBSDPoolObjsetStats() error {

sysCtlMetrics := []string{
"nunlinked", "nunlinks", "nread", "reads", "nwritten", "writes",
}
zfsPoolMibPrefix := "kstat.zfs.pool.dataset"
zfsDatasetsNames := []string{}

zfsDatasets, err := unix.Sysctl(zfsPoolMibPrefix)
if err != nil {
return fmt.Errorf("couldn't get sysctl: %w", err)
}

for dataset, _ := range zfsDatasets {
if strings.HasSuffix(dataset, ".dataset_name") {
zfsDatasetsNames = append(zfsDatasetsNames, strings.SplitAfter(dataset, ".")[3])
}
}

for _, zpoolDataset := range zfsDatasetsNames {
zfsDatasetLabels := map[string]string{
"dataset": zpoolDataset,
"zpool": strings.SplitAfter(zpoolDataset, "/")[0],
}
for metric := range sysCtlMetrics {
c.sysctls = append(c.sysctls, bsdSysctl{
name: fmt.SprintF("node_zfs_zpool_dataset_%s", metric),
description: fmt.SprintF("node_zfs_zpool_dataset_%s", metric),
mib: fmt.Sprintf("%s.%s.%s", zfsPoolMibPrefix, poolObj, metric),
dataType: bsdSysctlTypeUint64,
valueType: prometheus.CounterValue,
labels: zfsDatasetLabels,
})
}
}

return nil
}

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