mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-23 20:36:21 +01:00
92 lines
3.6 KiB
Markdown
92 lines
3.6 KiB
Markdown
# Node exporter
|
|
|
|
[](https://travis-ci.org/prometheus/node_exporter)
|
|
|
|
Prometheus exporter for machine metrics, written in Go with pluggable metric
|
|
collectors.
|
|
|
|
## Building and running
|
|
|
|
make
|
|
./node_exporter <flags>
|
|
|
|
## Running tests
|
|
|
|
make test
|
|
|
|
## Available collectors
|
|
|
|
By default the build will include the native collectors that expose information
|
|
from `/proc`.
|
|
|
|
Which collectors are used is controlled by the `--collectors.enabled` flag.
|
|
|
|
### Enabled by default
|
|
|
|
Name | Description
|
|
---------|------------
|
|
diskstats | Exposes disk I/O statistics from `/proc/diskstats`.
|
|
filesystem | Exposes filesystem statistics, such as disk space used.
|
|
loadavg | Exposes load average.
|
|
meminfo | Exposes memory statistics from `/proc/meminfo`.
|
|
netdev | Exposes network interface statistics from `/proc/netstat`, such as bytes transferred.
|
|
netstat | Exposes network statistics from `/proc/net/netstat`. This is the same information as `netstat -s`.
|
|
stat | Exposes various statistics from `/proc/stat`. This includes CPU usage, boot time, forks and interrupts.
|
|
textfile | Exposes statistics read from local disk. The `--collector.textfile.directory` flag must be set.
|
|
time | Exposes the current system time.
|
|
mdadm | Exposes statistics about devices in `/proc/mdstat` (does nothing if no /proc/mdstat present).
|
|
|
|
|
|
### Disabled by default
|
|
|
|
Name | Description
|
|
---------|------------
|
|
bonding | Exposes the number of configured and active slaves of Linux bonding interfaces.
|
|
gmond | Exposes statistics from Ganglia.
|
|
interrupts | Exposes detailed interrupts statistics from `/proc/interrupts`.
|
|
ipvs | Exposes IPVS status from `/proc/net/ip_vs` and stats from `/proc/net/ip_vs_stats`.
|
|
lastlogin | Exposes the last time there was a login.
|
|
megacli | Exposes RAID statistics from MegaCLI.
|
|
ntp | Exposes time drift from an NTP server.
|
|
runit | Exposes service status from [runit](http://smarden.org/runit/).
|
|
supervisord | Exposes service status from [supervisord](http://supervisord.org/).
|
|
systemd | Exposes service and system status from [systemd](http://www.freedesktop.org/wiki/Software/systemd/).
|
|
tcpstat | Exposes TCP connection status information from `/proc/net/tcp` and `/proc/net/tcp6`. (Warning: the current version has potential performance issues in high load situations.)
|
|
|
|
## Textfile Collector
|
|
|
|
The textfile collector is similar to the [Pushgateway](https://github.com/prometheus/pushgateway),
|
|
in that it allows exporting of statistics from batch jobs. It can also be used
|
|
to export static metrics, such as what role a machine has. The Pushgateway
|
|
should be used for service-level metrics. The textfile module is for metrics
|
|
that are tied to a machine.
|
|
|
|
To use it, set the `--collector.textfile.directory` flag on the Node exporter. The
|
|
collector will parse all files in that directory matching the glob `*.prom`
|
|
using the [text
|
|
format](http://prometheus.io/docs/instrumenting/exposition_formats/).
|
|
|
|
To atomically push completion time for a cron job:
|
|
```
|
|
echo my_batch_job_completion_time $(date +%s) > /path/to/directory/my_batch_job.prom.$$
|
|
mv /path/to/directory/my_batch_job.prom.$$ /path/to/directory/my_batch_job.prom
|
|
```
|
|
|
|
To statically set roles for a machine using labels:
|
|
```
|
|
echo 'role{role="application_server"} 1' > /path/to/directory/role.prom.$$
|
|
mv /path/to/directory/role.prom.$$ /path/to/directory/role.prom
|
|
```
|
|
|
|
## Using Docker
|
|
|
|
You can deploy this exporter using the [prom/node-exporter](https://registry.hub.docker.com/u/prom/node-exporter/) Docker image.
|
|
|
|
For example:
|
|
|
|
```bash
|
|
docker pull prom/node-exporter
|
|
|
|
docker run -d -p 9100:9100 --net="host" prom/node-exporter
|
|
```
|