mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-29 07:29:48 -08:00
d7348a5c78
* updates for zfsonlinux 0.7.5 * add constants for KSTAT_DATA_* types * added e2e test for negative values represented by uint64 that can result from ZFS bugs
113 lines
3 KiB
Go
113 lines
3 KiB
Go
// Copyright 2016 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build linux
|
|
// +build !nozfs
|
|
|
|
package collector
|
|
|
|
import (
|
|
"errors"
|
|
"strings"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/common/log"
|
|
)
|
|
|
|
var errZFSNotAvailable = errors.New("ZFS / ZFS statistics are not available")
|
|
|
|
type zfsSysctl string
|
|
|
|
func init() {
|
|
registerCollector("zfs", defaultEnabled, NewZFSCollector)
|
|
}
|
|
|
|
type zfsCollector struct {
|
|
linuxProcpathBase string
|
|
linuxZpoolIoPath string
|
|
linuxPathMap map[string]string
|
|
}
|
|
|
|
// NewZFSCollector returns a new Collector exposing ZFS statistics.
|
|
func NewZFSCollector() (Collector, error) {
|
|
return &zfsCollector{
|
|
linuxProcpathBase: "spl/kstat/zfs",
|
|
linuxZpoolIoPath: "/*/io",
|
|
linuxPathMap: map[string]string{
|
|
"zfs_abd": "abdstats",
|
|
"zfs_arc": "arcstats",
|
|
"zfs_dbuf": "dbuf_stats",
|
|
"zfs_dmu_tx": "dmu_tx",
|
|
"zfs_dnode": "dnodestats",
|
|
"zfs_fm": "fm",
|
|
"zfs_vdev_cache": "vdev_cache_stats", // vdev_cache is deprecated
|
|
"zfs_vdev_mirror": "vdev_mirror_stats",
|
|
"zfs_xuio": "xuio_stats", // no known consumers of the XUIO interface on Linux exist
|
|
"zfs_zfetch": "zfetchstats",
|
|
"zfs_zil": "zil",
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
func (c *zfsCollector) Update(ch chan<- prometheus.Metric) error {
|
|
for subsystem := range c.linuxPathMap {
|
|
if err := c.updateZfsStats(subsystem, ch); err != nil {
|
|
if err == errZFSNotAvailable {
|
|
log.Debug(err)
|
|
// ZFS /proc files are added as new features to ZFS arrive, it is ok to continue
|
|
continue
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
|
|
// Pool stats
|
|
return c.updatePoolStats(ch)
|
|
}
|
|
|
|
func (s zfsSysctl) metricName() string {
|
|
parts := strings.Split(string(s), ".")
|
|
return strings.Replace(parts[len(parts)-1], "-", "_", -1)
|
|
}
|
|
|
|
func (c *zfsCollector) constSysctlMetric(subsystem string, sysctl zfsSysctl, value uint64) prometheus.Metric {
|
|
metricName := sysctl.metricName()
|
|
|
|
return prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, metricName),
|
|
string(sysctl),
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.UntypedValue,
|
|
float64(value),
|
|
)
|
|
}
|
|
|
|
func (c *zfsCollector) constPoolMetric(poolName string, sysctl zfsSysctl, value uint64) prometheus.Metric {
|
|
metricName := sysctl.metricName()
|
|
|
|
return prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "zfs_zpool", metricName),
|
|
string(sysctl),
|
|
[]string{"zpool"},
|
|
nil,
|
|
),
|
|
prometheus.UntypedValue,
|
|
float64(value),
|
|
poolName,
|
|
)
|
|
}
|