mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-23 20:36:21 +01:00
64 lines
2.6 KiB
Markdown
64 lines
2.6 KiB
Markdown
# Node exporter
|
|
|
|
Prometheus exporter for machine metrics, written in Go with pluggable metric
|
|
collectors.
|
|
|
|
## Available collectors
|
|
|
|
By default the build will include the native collectors that expose information
|
|
from /proc.
|
|
|
|
Which collectors are used is controlled by the `--enabledCollectors` flag.
|
|
|
|
### Enabled by default
|
|
|
|
Name | Description
|
|
---------|------------
|
|
attributes | Exposes attributes from the configuration file. Deprecated, use textfile module instead.
|
|
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 `--textfile.directory` flag must be set.
|
|
time | Exposes the current system time.
|
|
|
|
|
|
### 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.
|
|
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/).
|
|
|
|
## 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 set the `--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
|
|
```
|