prometheusmetricshost-metricsmachine-metricsnode-metricsprocfsprometheus-exportersystem-informationsystem-metrics
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392 lines
16 KiB
392 lines
16 KiB
// Copyright 2018 The Prometheus Authors |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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package collector |
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import ( |
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"fmt" |
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"github.com/prometheus/client_golang/prometheus" |
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"github.com/prometheus/procfs" |
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"github.com/prometheus/procfs/nfs" |
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) |
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// A nfsdCollector is a Collector which gathers metrics from /proc/net/rpc/nfsd. |
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// See: https://www.svennd.be/nfsd-stats-explained-procnetrpcnfsd/ |
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type nfsdCollector struct { |
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fs procfs.FS |
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requestsDesc *prometheus.Desc |
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} |
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func init() { |
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registerCollector("nfsd", defaultEnabled, NewNFSdCollector) |
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} |
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const ( |
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nfsdSubsystem = "nfsd" |
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) |
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// NewNFSdCollector returns a new Collector exposing /proc/net/rpc/nfsd statistics. |
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func NewNFSdCollector() (Collector, error) { |
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fs, err := procfs.NewFS(*procPath) |
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if err != nil { |
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return nil, fmt.Errorf("failed to open procfs: %v", err) |
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} |
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return &nfsdCollector{ |
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fs: fs, |
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requestsDesc: prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "requests_total"), |
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"Total number NFSd Requests by method and protocol.", |
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[]string{"proto", "method"}, nil, |
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), |
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}, nil |
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} |
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// Update implements Collector. |
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func (c *nfsdCollector) Update(ch chan<- prometheus.Metric) error { |
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stats, err := c.fs.NFSdServerRPCStats() |
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if err != nil { |
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return fmt.Errorf("failed to retrieve nfsd stats: %v", err) |
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} |
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c.updateNFSdReplyCacheStats(ch, &stats.ReplyCache) |
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c.updateNFSdFileHandlesStats(ch, &stats.FileHandles) |
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c.updateNFSdInputOutputStats(ch, &stats.InputOutput) |
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c.updateNFSdThreadsStats(ch, &stats.Threads) |
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c.updateNFSdReadAheadCacheStats(ch, &stats.ReadAheadCache) |
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c.updateNFSdNetworkStats(ch, &stats.Network) |
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c.updateNFSdServerRPCStats(ch, &stats.ServerRPC) |
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c.updateNFSdRequestsv2Stats(ch, &stats.V2Stats) |
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c.updateNFSdRequestsv3Stats(ch, &stats.V3Stats) |
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c.updateNFSdRequestsv4Stats(ch, &stats.V4Ops) |
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return nil |
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} |
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// updateNFSdReplyCacheStats collects statistics for the reply cache. |
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func (c *nfsdCollector) updateNFSdReplyCacheStats(ch chan<- prometheus.Metric, s *nfs.ReplyCache) { |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "reply_cache_hits_total"), |
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"Total number of NFSd Reply Cache hits (client lost server response).", |
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nil, |
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nil, |
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), |
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prometheus.CounterValue, |
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float64(s.Hits)) |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "reply_cache_misses_total"), |
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"Total number of NFSd Reply Cache an operation that requires caching (idempotent).", |
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nil, |
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nil, |
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), |
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prometheus.CounterValue, |
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float64(s.Misses)) |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "reply_cache_nocache_total"), |
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"Total number of NFSd Reply Cache non-idempotent operations (rename/delete/…).", |
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nil, |
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nil, |
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), |
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prometheus.CounterValue, |
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float64(s.NoCache)) |
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} |
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// updateNFSdFileHandlesStats collects statistics for the file handles. |
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func (c *nfsdCollector) updateNFSdFileHandlesStats(ch chan<- prometheus.Metric, s *nfs.FileHandles) { |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "file_handles_stale_total"), |
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"Total number of NFSd stale file handles", |
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nil, |
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nil, |
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), |
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prometheus.CounterValue, |
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float64(s.Stale)) |
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// NOTE: Other FileHandles entries are unused in the kernel. |
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} |
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// updateNFSdInputOutputStats collects statistics for the bytes in/out. |
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func (c *nfsdCollector) updateNFSdInputOutputStats(ch chan<- prometheus.Metric, s *nfs.InputOutput) { |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "disk_bytes_read_total"), |
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"Total NFSd bytes read.", |
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nil, |
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nil, |
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), |
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prometheus.CounterValue, |
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float64(s.Read)) |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "disk_bytes_written_total"), |
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"Total NFSd bytes written.", |
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nil, |
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nil, |
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), |
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prometheus.CounterValue, |
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float64(s.Write)) |
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} |
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// updateNFSdThreadsStats collects statistics for kernel server threads. |
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func (c *nfsdCollector) updateNFSdThreadsStats(ch chan<- prometheus.Metric, s *nfs.Threads) { |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "server_threads"), |
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"Total number of NFSd kernel threads that are running.", |
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nil, |
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nil, |
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), |
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prometheus.GaugeValue, |
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float64(s.Threads)) |
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} |
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// updateNFSdReadAheadCacheStats collects statistics for the read ahead cache. |
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func (c *nfsdCollector) updateNFSdReadAheadCacheStats(ch chan<- prometheus.Metric, s *nfs.ReadAheadCache) { |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "read_ahead_cache_size_blocks"), |
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"How large the read ahead cache is in blocks.", |
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nil, |
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nil, |
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), |
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prometheus.GaugeValue, |
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float64(s.CacheSize)) |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "read_ahead_cache_not_found_total"), |
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"Total number of NFSd read ahead cache not found.", |
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nil, |
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nil, |
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), |
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prometheus.CounterValue, |
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float64(s.NotFound)) |
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} |
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// updateNFSdNetworkStats collects statistics for network packets/connections. |
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func (c *nfsdCollector) updateNFSdNetworkStats(ch chan<- prometheus.Metric, s *nfs.Network) { |
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packetDesc := prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "packets_total"), |
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"Total NFSd network packets (sent+recieved) by protocol type.", |
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[]string{"proto"}, |
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nil, |
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) |
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ch <- prometheus.MustNewConstMetric( |
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packetDesc, |
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prometheus.CounterValue, |
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float64(s.UDPCount), "udp") |
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ch <- prometheus.MustNewConstMetric( |
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packetDesc, |
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prometheus.CounterValue, |
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float64(s.TCPCount), "tcp") |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "connections_total"), |
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"Total number of NFSd TCP connections.", |
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nil, |
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nil, |
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), |
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prometheus.CounterValue, |
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float64(s.TCPConnect)) |
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} |
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// updateNFSdServerRPCStats collects statistics for kernel server RPCs. |
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func (c *nfsdCollector) updateNFSdServerRPCStats(ch chan<- prometheus.Metric, s *nfs.ServerRPC) { |
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badRPCDesc := prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "rpc_errors_total"), |
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"Total number of NFSd RPC errors by error type.", |
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[]string{"error"}, |
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nil, |
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) |
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ch <- prometheus.MustNewConstMetric( |
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badRPCDesc, |
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prometheus.CounterValue, |
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float64(s.BadFmt), "fmt") |
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ch <- prometheus.MustNewConstMetric( |
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badRPCDesc, |
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prometheus.CounterValue, |
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float64(s.BadAuth), "auth") |
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ch <- prometheus.MustNewConstMetric( |
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badRPCDesc, |
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prometheus.CounterValue, |
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float64(s.BadcInt), "cInt") |
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ch <- prometheus.MustNewConstMetric( |
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prometheus.NewDesc( |
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prometheus.BuildFQName(namespace, nfsdSubsystem, "server_rpcs_total"), |
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"Total number of NFSd RPCs.", |
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nil, |
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nil, |
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), |
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prometheus.GaugeValue, |
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float64(s.RPCCount)) |
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} |
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// updateNFSdRequestsv2Stats collects statistics for NFSv2 requests. |
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func (c *nfsdCollector) updateNFSdRequestsv2Stats(ch chan<- prometheus.Metric, s *nfs.V2Stats) { |
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const proto = "v2" |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.GetAttr), proto, "GetAttr") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.SetAttr), proto, "SetAttr") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Root), proto, "Root") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Lookup), proto, "Lookup") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.ReadLink), proto, "ReadLink") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Read), proto, "Read") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.WrCache), proto, "WrCache") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Write), proto, "Write") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Create), proto, "Create") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Remove), proto, "Remove") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Rename), proto, "Rename") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Link), proto, "Link") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.SymLink), proto, "SymLink") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.MkDir), proto, "MkDir") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.RmDir), proto, "RmDir") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.ReadDir), proto, "ReadDir") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.FsStat), proto, "FsStat") |
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} |
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// updateNFSdRequestsv3Stats collects statistics for NFSv3 requests. |
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func (c *nfsdCollector) updateNFSdRequestsv3Stats(ch chan<- prometheus.Metric, s *nfs.V3Stats) { |
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const proto = "v3" |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.GetAttr), proto, "GetAttr") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.SetAttr), proto, "SetAttr") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Lookup), proto, "Lookup") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Access), proto, "Access") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.ReadLink), proto, "ReadLink") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Read), proto, "Read") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Write), proto, "Write") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Create), proto, "Create") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.MkDir), proto, "MkDir") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.SymLink), proto, "SymLink") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.MkNod), proto, "MkNod") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Remove), proto, "Remove") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.RmDir), proto, "RmDir") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Rename), proto, "Rename") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Link), proto, "Link") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.ReadDir), proto, "ReadDir") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.ReadDirPlus), proto, "ReadDirPlus") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.FsStat), proto, "FsStat") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.FsInfo), proto, "FsInfo") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.PathConf), proto, "PathConf") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Commit), proto, "Commit") |
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} |
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// updateNFSdRequestsv4Stats collects statistics for NFSv4 requests. |
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func (c *nfsdCollector) updateNFSdRequestsv4Stats(ch chan<- prometheus.Metric, s *nfs.V4Ops) { |
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const proto = "v4" |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Access), proto, "Access") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Close), proto, "Close") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Commit), proto, "Commit") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Create), proto, "Create") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.DelegPurge), proto, "DelegPurge") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.DelegReturn), proto, "DelegReturn") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.GetAttr), proto, "GetAttr") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.GetFH), proto, "GetFH") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Link), proto, "Link") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Lock), proto, "Lock") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Lockt), proto, "Lockt") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Locku), proto, "Locku") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Lookup), proto, "Lookup") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.LookupRoot), proto, "LookupRoot") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Nverify), proto, "Nverify") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Open), proto, "Open") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.OpenAttr), proto, "OpenAttr") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.OpenConfirm), proto, "OpenConfirm") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.OpenDgrd), proto, "OpenDgrd") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.PutFH), proto, "PutFH") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Read), proto, "Read") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.ReadDir), proto, "ReadDir") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.ReadLink), proto, "ReadLink") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Remove), proto, "Remove") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Rename), proto, "Rename") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Renew), proto, "Renew") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.RestoreFH), proto, "RestoreFH") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.SaveFH), proto, "SaveFH") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.SecInfo), proto, "SecInfo") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.SetAttr), proto, "SetAttr") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Verify), proto, "Verify") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.Write), proto, "Write") |
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ch <- prometheus.MustNewConstMetric(c.requestsDesc, prometheus.CounterValue, |
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float64(s.RelLockOwner), proto, "RelLockOwner") |
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}
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