mirror of
https://github.com/prometheus/node_exporter.git
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Add softnet collector (#1576)
Signed-off-by: Peter Nicholson <petergoods@hotmail.com>
This commit is contained in:
Peter Nicholson
Ben Kochie
parent
cafb12dc59
commit
a80b7d0bc5
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@ -21,6 +21,7 @@
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* [FEATURE] Add new metric node_cpu_info #1489
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* [FEATURE] Add new thermal_zone collector #1425
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* [FEATURE] Add new cooling_device metrics to thermal zone collector #1445
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* [FEATURE] Add new softnet collector #1576
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* [ENHANCEMENT] Collect InfiniBand port state and physical state #1357
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* [ENHANCEMENT] Include additional XFS runtime statistics. #1423
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* [ENHANCEMENT] Report non-fatal collection errors in the exporter metric. #1439
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@ -53,6 +53,7 @@ nfsd | Exposes NFS kernel server statistics from `/proc/net/rpc/nfsd`. This is t
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pressure | Exposes pressure stall statistics from `/proc/pressure/`. | Linux (kernel 4.20+ and/or [CONFIG\_PSI](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/accounting/psi.txt))
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schedstat | Exposes task scheduler statistics from `/proc/schedstat`. | Linux
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sockstat | Exposes various statistics from `/proc/net/sockstat`. | Linux
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softnet | Exposes statistics from `/proc/net/softnet_stat`. | Linux
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stat | Exposes various statistics from `/proc/stat`. This includes boot time, forks and interrupts. | Linux
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textfile | Exposes statistics read from local disk. The `--collector.textfile.directory` flag must be set. | _any_
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thermal\_zone | Exposes thermal zone & cooling device statistics from `/sys/class/thermal`. | Linux
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@ -2547,6 +2547,7 @@ node_scrape_collector_success{collector="processes"} 1
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node_scrape_collector_success{collector="qdisc"} 1
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node_scrape_collector_success{collector="schedstat"} 1
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node_scrape_collector_success{collector="sockstat"} 1
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node_scrape_collector_success{collector="softnet"} 1
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node_scrape_collector_success{collector="stat"} 1
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node_scrape_collector_success{collector="textfile"} 1
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node_scrape_collector_success{collector="thermal_zone"} 1
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@ -2596,6 +2597,24 @@ node_sockstat_UDP_mem_bytes 0
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# HELP node_sockstat_sockets_used Number of sockets sockets in state used.
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# TYPE node_sockstat_sockets_used gauge
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node_sockstat_sockets_used 229
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# HELP node_softnet_dropped_total Number of dropped packets
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# TYPE node_softnet_dropped_total counter
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node_softnet_dropped_total{cpu="0"} 0
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node_softnet_dropped_total{cpu="1"} 41
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node_softnet_dropped_total{cpu="2"} 0
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node_softnet_dropped_total{cpu="3"} 0
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# HELP node_softnet_processed_total Number of processed packets
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# TYPE node_softnet_processed_total counter
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node_softnet_processed_total{cpu="0"} 299641
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node_softnet_processed_total{cpu="1"} 916354
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node_softnet_processed_total{cpu="2"} 5.577791e+06
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node_softnet_processed_total{cpu="3"} 3.113785e+06
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# HELP node_softnet_times_squeezed_total Number of times processing packets ran out of quota
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# TYPE node_softnet_times_squeezed_total counter
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node_softnet_times_squeezed_total{cpu="0"} 1
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node_softnet_times_squeezed_total{cpu="1"} 10
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node_softnet_times_squeezed_total{cpu="2"} 85
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node_softnet_times_squeezed_total{cpu="3"} 50
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# HELP node_textfile_mtime_seconds Unixtime mtime of textfiles successfully read.
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# TYPE node_textfile_mtime_seconds gauge
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# HELP node_textfile_scrape_error 1 if there was an error opening or reading a file, 0 otherwise
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@ -2568,6 +2568,7 @@ node_scrape_collector_success{collector="processes"} 1
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node_scrape_collector_success{collector="qdisc"} 1
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node_scrape_collector_success{collector="schedstat"} 1
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node_scrape_collector_success{collector="sockstat"} 1
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node_scrape_collector_success{collector="softnet"} 1
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node_scrape_collector_success{collector="stat"} 1
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node_scrape_collector_success{collector="textfile"} 1
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node_scrape_collector_success{collector="thermal_zone"} 1
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@ -2635,6 +2636,24 @@ node_sockstat_UDP_mem_bytes 0
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# HELP node_sockstat_sockets_used Number of IPv4 sockets in use.
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# TYPE node_sockstat_sockets_used gauge
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node_sockstat_sockets_used 229
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# HELP node_softnet_dropped_total Number of dropped packets
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# TYPE node_softnet_dropped_total counter
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node_softnet_dropped_total{cpu="0"} 0
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node_softnet_dropped_total{cpu="1"} 41
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node_softnet_dropped_total{cpu="2"} 0
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node_softnet_dropped_total{cpu="3"} 0
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# HELP node_softnet_processed_total Number of processed packets
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# TYPE node_softnet_processed_total counter
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node_softnet_processed_total{cpu="0"} 299641
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node_softnet_processed_total{cpu="1"} 916354
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node_softnet_processed_total{cpu="2"} 5.577791e+06
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node_softnet_processed_total{cpu="3"} 3.113785e+06
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# HELP node_softnet_times_squeezed_total Number of times processing packets ran out of quota
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# TYPE node_softnet_times_squeezed_total counter
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node_softnet_times_squeezed_total{cpu="0"} 1
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node_softnet_times_squeezed_total{cpu="1"} 10
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node_softnet_times_squeezed_total{cpu="2"} 85
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node_softnet_times_squeezed_total{cpu="3"} 50
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# HELP node_textfile_mtime_seconds Unixtime mtime of textfiles successfully read.
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# TYPE node_textfile_mtime_seconds gauge
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# HELP node_textfile_scrape_error 1 if there was an error opening or reading a file, 0 otherwise
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4
collector/fixtures/proc/net/softnet_stat
Normal file
4
collector/fixtures/proc/net/softnet_stat
Normal file
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@ -0,0 +1,4 @@
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00049279 00000000 00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
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000dfb82 00000029 0000000a 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
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00551c3f 00000000 00000055 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
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002f8339 00000000 00000032 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
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99
collector/softnet_linux.go
Normal file
99
collector/softnet_linux.go
Normal file
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@ -0,0 +1,99 @@
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// Copyright 2019 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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// +build !nosoftnet
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package collector
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import (
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"fmt"
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"strconv"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/procfs"
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)
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type softnetCollector struct {
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fs procfs.FS
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processed *prometheus.Desc
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dropped *prometheus.Desc
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timeSqueezed *prometheus.Desc
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}
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const (
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softnetSubsystem = "softnet"
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)
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func init() {
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registerCollector("softnet", defaultEnabled, NewSoftnetCollector)
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}
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// NewSoftnetCollector returns a new Collector exposing softnet metrics.
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func NewSoftnetCollector() (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: %w", err)
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}
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return &softnetCollector{
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fs: fs,
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processed: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, softnetSubsystem, "processed_total"),
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"Number of processed packets",
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[]string{"cpu"}, nil,
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),
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dropped: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, softnetSubsystem, "dropped_total"),
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"Number of dropped packets",
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[]string{"cpu"}, nil,
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),
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timeSqueezed: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, softnetSubsystem, "times_squeezed_total"),
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"Number of times processing packets ran out of quota",
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[]string{"cpu"}, nil,
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),
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}, nil
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}
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// Update gets parsed softnet statistics using procfs.
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func (c *softnetCollector) Update(ch chan<- prometheus.Metric) error {
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stats, err := c.fs.GatherSoftnetStats()
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if err != nil {
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return fmt.Errorf("could not get softnet statistics: %s", err)
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}
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for cpuNumber, cpuStats := range stats {
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cpu := strconv.Itoa(cpuNumber)
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ch <- prometheus.MustNewConstMetric(
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c.processed,
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prometheus.CounterValue,
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float64(cpuStats.Processed),
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cpu,
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)
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ch <- prometheus.MustNewConstMetric(
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c.dropped,
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prometheus.CounterValue,
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float64(cpuStats.Dropped),
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cpu,
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)
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ch <- prometheus.MustNewConstMetric(
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c.timeSqueezed,
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prometheus.CounterValue,
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float64(cpuStats.TimeSqueezed),
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cpu,
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)
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}
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return nil
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}
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