mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-28 23:19:46 -08:00
6a041692ed
* Add NFS Server metrics collector. * Add File Handles metrics. * Add nfsd IO stats. * Add metrics for NFSd threads. * Add metrics for NFSd read ahead cache. * Add NFSd network traffic counters. * Add RPC metrics. * Add V2 requests metrics. * Add NFSv3 metrics. * Add NFSv4 metrics. * Update reply cache comment. * Update help text.
393 lines
16 KiB
Go
393 lines
16 KiB
Go
// Copyright 2018 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.
|
|
|
|
package collector
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
"github.com/prometheus/procfs/nfs"
|
|
)
|
|
|
|
// A nfsdCollector is a Collector which gathers metrics from /proc/net/rpc/nfsd.
|
|
// See: https://www.svennd.be/nfsd-stats-explained-procnetrpcnfsd/
|
|
type nfsdCollector struct {
|
|
fs procfs.FS
|
|
requestsDesc *prometheus.Desc
|
|
}
|
|
|
|
func init() {
|
|
registerCollector("nfsd", defaultEnabled, NewNFSdCollector)
|
|
}
|
|
|
|
const (
|
|
nfsdSubsystem = "nfsd"
|
|
)
|
|
|
|
// NewNFSdCollector returns a new Collector exposing /proc/net/rpc/nfsd statistics.
|
|
func NewNFSdCollector() (Collector, error) {
|
|
fs, err := procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open procfs: %v", err)
|
|
}
|
|
|
|
return &nfsdCollector{
|
|
fs: fs,
|
|
requestsDesc: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "requests_total"),
|
|
"Total number NFSd Requests by method and protocol.",
|
|
[]string{"proto", "method"}, nil,
|
|
),
|
|
}, nil
|
|
}
|
|
|
|
// Update implements Collector.
|
|
func (c *nfsdCollector) Update(ch chan<- prometheus.Metric) error {
|
|
stats, err := c.fs.NFSdServerRPCStats()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to retrieve nfsd stats: %v", err)
|
|
}
|
|
|
|
c.updateNFSdReplyCacheStats(ch, &stats.ReplyCache)
|
|
c.updateNFSdFileHandlesStats(ch, &stats.FileHandles)
|
|
c.updateNFSdInputOutputStats(ch, &stats.InputOutput)
|
|
c.updateNFSdThreadsStats(ch, &stats.Threads)
|
|
c.updateNFSdReadAheadCacheStats(ch, &stats.ReadAheadCache)
|
|
c.updateNFSdNetworkStats(ch, &stats.Network)
|
|
c.updateNFSdServerRPCStats(ch, &stats.ServerRPC)
|
|
c.updateNFSdRequestsv2Stats(ch, &stats.V2Stats)
|
|
c.updateNFSdRequestsv3Stats(ch, &stats.V3Stats)
|
|
c.updateNFSdRequestsv4Stats(ch, &stats.V4Ops)
|
|
|
|
return nil
|
|
}
|
|
|
|
// updateNFSdReplyCacheStats collects statistics for the reply cache.
|
|
func (c *nfsdCollector) updateNFSdReplyCacheStats(ch chan<- prometheus.Metric, s *nfs.ReplyCache) {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "reply_cache_hits_total"),
|
|
"Total number of NFSd Reply Cache hits (client lost server response).",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.CounterValue,
|
|
float64(s.Hits))
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "reply_cache_misses_total"),
|
|
"Total number of NFSd Reply Cache an operation that requires caching (idempotent).",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.CounterValue,
|
|
float64(s.Misses))
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "reply_cache_nocache_total"),
|
|
"Total number of NFSd Reply Cache non-idempotent operations (rename/delete/…).",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.CounterValue,
|
|
float64(s.NoCache))
|
|
}
|
|
|
|
// updateNFSdFileHandlesStats collects statistics for the file handles.
|
|
func (c *nfsdCollector) updateNFSdFileHandlesStats(ch chan<- prometheus.Metric, s *nfs.FileHandles) {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "file_handles_stale_total"),
|
|
"Total number of NFSd stale file handles",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.CounterValue,
|
|
float64(s.Stale))
|
|
// NOTE: Other FileHandles entries are unused in the kernel.
|
|
}
|
|
|
|
// updateNFSdInputOutputStats collects statistics for the bytes in/out.
|
|
func (c *nfsdCollector) updateNFSdInputOutputStats(ch chan<- prometheus.Metric, s *nfs.InputOutput) {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "disk_bytes_read_total"),
|
|
"Total NFSd bytes read.",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.CounterValue,
|
|
float64(s.Read))
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "disk_bytes_written_total"),
|
|
"Total NFSd bytes written.",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.CounterValue,
|
|
float64(s.Write))
|
|
}
|
|
|
|
// updateNFSdThreadsStats collects statistics for kernel server threads.
|
|
func (c *nfsdCollector) updateNFSdThreadsStats(ch chan<- prometheus.Metric, s *nfs.Threads) {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "server_threads"),
|
|
"Total number of NFSd kernel threads that are running.",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.GaugeValue,
|
|
float64(s.Threads))
|
|
}
|
|
|
|
// updateNFSdReadAheadCacheStats collects statistics for the read ahead cache.
|
|
func (c *nfsdCollector) updateNFSdReadAheadCacheStats(ch chan<- prometheus.Metric, s *nfs.ReadAheadCache) {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "read_ahead_cache_size_blocks"),
|
|
"How large the read ahead cache is in blocks.",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.GaugeValue,
|
|
float64(s.CacheSize))
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "read_ahead_cache_not_found_total"),
|
|
"Total number of NFSd read ahead cache not found.",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.CounterValue,
|
|
float64(s.NotFound))
|
|
}
|
|
|
|
// updateNFSdNetworkStats collects statistics for network packets/connections.
|
|
func (c *nfsdCollector) updateNFSdNetworkStats(ch chan<- prometheus.Metric, s *nfs.Network) {
|
|
packetDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "packets_total"),
|
|
"Total NFSd network packets (sent+recieved) by protocol type.",
|
|
[]string{"proto"},
|
|
nil,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
packetDesc,
|
|
prometheus.CounterValue,
|
|
float64(s.UDPCount), "udp")
|
|
ch <- prometheus.MustNewConstMetric(
|
|
packetDesc,
|
|
prometheus.CounterValue,
|
|
float64(s.TCPCount), "tcp")
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "connections_total"),
|
|
"Total number of NFSd TCP connections.",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.CounterValue,
|
|
float64(s.TCPConnect))
|
|
}
|
|
|
|
// updateNFSdServerRPCStats collects statistics for kernel server RPCs.
|
|
func (c *nfsdCollector) updateNFSdServerRPCStats(ch chan<- prometheus.Metric, s *nfs.ServerRPC) {
|
|
badRPCDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "rpc_errors_total"),
|
|
"Total number of NFSd RPC errors by error type.",
|
|
[]string{"error"},
|
|
nil,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
badRPCDesc,
|
|
prometheus.CounterValue,
|
|
float64(s.BadFmt), "fmt")
|
|
ch <- prometheus.MustNewConstMetric(
|
|
badRPCDesc,
|
|
prometheus.CounterValue,
|
|
float64(s.BadAuth), "auth")
|
|
ch <- prometheus.MustNewConstMetric(
|
|
badRPCDesc,
|
|
prometheus.CounterValue,
|
|
float64(s.BadcInt), "cInt")
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, nfsdSubsystem, "server_rpcs_total"),
|
|
"Total number of NFSd RPCs.",
|
|
nil,
|
|
nil,
|
|
),
|
|
prometheus.GaugeValue,
|
|
float64(s.RPCCount))
|
|
}
|
|
|
|
// updateNFSdRequestsv2Stats collects statistics for NFSv2 requests.
|
|
func (c *nfsdCollector) updateNFSdRequestsv2Stats(ch chan<- prometheus.Metric, s *nfs.V2Stats) {
|
|
const proto = "v2"
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.GetAttr), proto, "GetAttr")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.SetAttr), proto, "SetAttr")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Root), proto, "Root")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Lookup), proto, "Lookup")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.ReadLink), proto, "ReadLink")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Read), proto, "Read")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.WrCache), proto, "WrCache")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Write), proto, "Write")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Create), proto, "Create")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Remove), proto, "Remove")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Rename), proto, "Rename")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Link), proto, "Link")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.SymLink), proto, "SymLink")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.MkDir), proto, "MkDir")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.RmDir), proto, "RmDir")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.ReadDir), proto, "ReadDir")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.FsStat), proto, "FsStat")
|
|
}
|
|
|
|
// updateNFSdRequestsv3Stats collects statistics for NFSv3 requests.
|
|
func (c *nfsdCollector) updateNFSdRequestsv3Stats(ch chan<- prometheus.Metric, s *nfs.V3Stats) {
|
|
const proto = "v3"
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.GetAttr), proto, "GetAttr")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.SetAttr), proto, "SetAttr")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Lookup), proto, "Lookup")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Access), proto, "Access")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.ReadLink), proto, "ReadLink")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Read), proto, "Read")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Write), proto, "Write")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Create), proto, "Create")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.MkDir), proto, "MkDir")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.SymLink), proto, "SymLink")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.MkNod), proto, "MkNod")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Remove), proto, "Remove")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.RmDir), proto, "RmDir")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Rename), proto, "Rename")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Link), proto, "Link")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.ReadDir), proto, "ReadDir")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.ReadDirPlus), proto, "ReadDirPlus")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.FsStat), proto, "FsStat")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.FsInfo), proto, "FsInfo")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.PathConf), proto, "PathConf")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Commit), proto, "Commit")
|
|
}
|
|
|
|
// updateNFSdRequestsv4Stats collects statistics for NFSv4 requests.
|
|
func (c *nfsdCollector) updateNFSdRequestsv4Stats(ch chan<- prometheus.Metric, s *nfs.V4Ops) {
|
|
const proto = "v4"
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Access), proto, "Access")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Close), proto, "Close")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Commit), proto, "Commit")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Create), proto, "Create")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.DelegPurge), proto, "DelegPurge")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.DelegReturn), proto, "DelegReturn")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.GetAttr), proto, "GetAttr")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.GetFH), proto, "GetFH")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Link), proto, "Link")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Lock), proto, "Lock")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Lockt), proto, "Lockt")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Locku), proto, "Locku")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Lookup), proto, "Lookup")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.LookupRoot), proto, "LookupRoot")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Nverify), proto, "Nverify")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Open), proto, "Open")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.OpenAttr), proto, "OpenAttr")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.OpenConfirm), proto, "OpenConfirm")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.OpenDgrd), proto, "OpenDgrd")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.PutFH), proto, "PutFH")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Read), proto, "Read")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.ReadDir), proto, "ReadDir")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.ReadLink), proto, "ReadLink")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Remove), proto, "Remove")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Rename), proto, "Rename")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Renew), proto, "Renew")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.RestoreFH), proto, "RestoreFH")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.SaveFH), proto, "SaveFH")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.SecInfo), proto, "SecInfo")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.SetAttr), proto, "SetAttr")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Verify), proto, "Verify")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.Write), proto, "Write")
|
|
ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue,
|
|
float64(s.RelLockOwner), proto, "RelLockOwner")
|
|
}
|