mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-24 22:06:49 +01:00
da5972b539
* Two new states will be added to the tcpstat collector called rx_queued_bytes and tx_queued_bytes. For UDP datagrams an additional collector 'udp_queues' can be used to expose the total lengths of the tx_queue and rx_queue. @SuperQ and @discordianfish this changes gives us the option to check for overloaded UDP + TCP processing. The names of the new TCP states and the UDP metric can be discussed. The current reasons are just: I don't want to add another collector for the same exposed file, so I just added the new states to the tcpstat collector. I chose the name 'udp_queue' instead of 'udpstat' as UDP has no state. Signed-off-by: Peter Bueschel <peter.bueschel@logmein.com>
88 lines
2.6 KiB
Go
88 lines
2.6 KiB
Go
// Copyright 2015 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 !noudp_queues
|
|
|
|
package collector
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"github.com/go-kit/kit/log"
|
|
"github.com/go-kit/kit/log/level"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
)
|
|
|
|
type (
|
|
udpQueuesCollector struct {
|
|
fs procfs.FS
|
|
desc *prometheus.Desc
|
|
logger log.Logger
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
registerCollector("udp_queues", defaultEnabled, NewUDPqueuesCollector)
|
|
}
|
|
|
|
// NewUDPqueuesCollector returns a new Collector exposing network udp queued bytes.
|
|
func NewUDPqueuesCollector(logger log.Logger) (Collector, error) {
|
|
fs, err := procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open procfs: %v", err)
|
|
}
|
|
return &udpQueuesCollector{
|
|
fs: fs,
|
|
desc: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "udp", "queues"),
|
|
"Number of allocated memory in the kernel for UDP datagrams in bytes.",
|
|
[]string{"queue", "ip"}, nil,
|
|
),
|
|
logger: logger,
|
|
}, nil
|
|
}
|
|
|
|
func (c *udpQueuesCollector) Update(ch chan<- prometheus.Metric) error {
|
|
|
|
s4, errIPv4 := c.fs.NetUDPSummary()
|
|
if errIPv4 == nil {
|
|
ch <- prometheus.MustNewConstMetric(c.desc, prometheus.GaugeValue, float64(s4.TxQueueLength), "tx", "v4")
|
|
ch <- prometheus.MustNewConstMetric(c.desc, prometheus.GaugeValue, float64(s4.RxQueueLength), "rx", "v4")
|
|
} else {
|
|
if os.IsNotExist(errIPv4) {
|
|
level.Debug(c.logger).Log("msg", "not collecting ipv4 based metrics")
|
|
} else {
|
|
return fmt.Errorf("couldn't get upd queued bytes: %s", errIPv4)
|
|
}
|
|
}
|
|
|
|
s6, errIPv6 := c.fs.NetUDP6Summary()
|
|
if errIPv6 == nil {
|
|
ch <- prometheus.MustNewConstMetric(c.desc, prometheus.GaugeValue, float64(s6.TxQueueLength), "tx", "v6")
|
|
ch <- prometheus.MustNewConstMetric(c.desc, prometheus.GaugeValue, float64(s6.RxQueueLength), "rx", "v6")
|
|
} else {
|
|
if os.IsNotExist(errIPv6) {
|
|
level.Debug(c.logger).Log("msg", "not collecting ipv6 based metrics")
|
|
} else {
|
|
return fmt.Errorf("couldn't get upd6 queued bytes: %s", errIPv6)
|
|
}
|
|
}
|
|
|
|
if os.IsNotExist(errIPv4) && os.IsNotExist(errIPv6) {
|
|
return ErrNoData
|
|
}
|
|
return nil
|
|
}
|