186 lines
6.6 KiB
Markdown
186 lines
6.6 KiB
Markdown
# Exec Input Plugin
|
|
|
|
The exec input plugin can execute arbitrary commands which output:
|
|
|
|
* JSON
|
|
* InfluxDB [line-protocol](https://docs.influxdata.com/influxdb/v0.10/write_protocols/line/)
|
|
* Graphite [graphite-protocol](http://graphite.readthedocs.org/en/latest/feeding-carbon.html)
|
|
|
|
|
|
### Example 1 - JSON
|
|
|
|
### Configuration
|
|
|
|
In this example a script called ```/tmp/test.sh``` and a script called ```/tmp/test2.sh```
|
|
are configured for ```[[inputs.exec]]``` in JSON format.
|
|
|
|
```
|
|
# Read flattened metrics from one or more commands that output JSON to stdout
|
|
[[inputs.exec]]
|
|
# Shell/commands array
|
|
commands = ["/tmp/test.sh", "/tmp/test2.sh"]
|
|
|
|
# Data format to consume. This can be "json", "influx" or "graphite" (line-protocol)
|
|
# NOTE json only reads numerical measurements, strings and booleans are ignored.
|
|
data_format = "json"
|
|
|
|
# measurement name suffix (for separating different commands)
|
|
name_suffix = "_mycollector"
|
|
|
|
## Below configuration will be used for data_format = "graphite", can be ignored for other data_format
|
|
## If matching multiple measurement files, this string will be used to join the matched values.
|
|
#separator = "."
|
|
|
|
## Each template line requires a template pattern. It can have an optional
|
|
## filter before the template and separated by spaces. It can also have optional extra
|
|
## tags following the template. Multiple tags should be separated by commas and no spaces
|
|
## similar to the line protocol format. The can be only one default template.
|
|
## Templates support below format:
|
|
## 1. filter + template
|
|
## 2. filter + template + extra tag
|
|
## 3. filter + template with field key
|
|
## 4. default template
|
|
#templates = [
|
|
# "*.app env.service.resource.measurement",
|
|
# "stats.* .host.measurement* region=us-west,agent=sensu",
|
|
# "stats2.* .host.measurement.field",
|
|
# "measurement*"
|
|
#]
|
|
```
|
|
|
|
Other options for modifying the measurement names are:
|
|
|
|
```
|
|
name_prefix = "prefix_"
|
|
```
|
|
|
|
Let's say that we have the above configuration, and mycollector outputs the
|
|
following JSON:
|
|
|
|
```json
|
|
{
|
|
"a": 0.5,
|
|
"b": {
|
|
"c": 0.1,
|
|
"d": 5
|
|
}
|
|
}
|
|
```
|
|
|
|
The collected metrics will be stored as fields under the measurement
|
|
"exec_mycollector":
|
|
|
|
```
|
|
exec_mycollector a=0.5,b_c=0.1,b_d=5 1452815002357578567
|
|
```
|
|
If using JSON, only numeric values are parsed and turned into floats. Booleans
|
|
and strings will be ignored.
|
|
|
|
### Example 2 - Influx Line-Protocol
|
|
|
|
In this example an application called ```/usr/bin/line_protocol_collector```
|
|
and a script called ```/tmp/test2.sh``` are configured for ```[[inputs.exec]]```
|
|
in influx line-protocol format.
|
|
|
|
#### Configuration
|
|
|
|
```
|
|
[[inputs.exec]]
|
|
# Shell/commands array
|
|
# compatible with old version
|
|
# we can still use the old command configuration
|
|
# command = "/usr/bin/line_protocol_collector"
|
|
commands = ["/usr/bin/line_protocol_collector","/tmp/test2.sh"]
|
|
|
|
# Data format to consume. This can be "json" or "influx" (line-protocol)
|
|
# NOTE json only reads numerical measurements, strings and booleans are ignored.
|
|
data_format = "influx"
|
|
```
|
|
|
|
The line_protocol_collector application outputs the following line protocol:
|
|
|
|
```
|
|
cpu,cpu=cpu0,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
|
|
cpu,cpu=cpu1,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
|
|
cpu,cpu=cpu2,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
|
|
cpu,cpu=cpu3,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
|
|
cpu,cpu=cpu4,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
|
|
cpu,cpu=cpu5,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
|
|
cpu,cpu=cpu6,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
|
|
```
|
|
|
|
You will get data in InfluxDB exactly as it is defined above,
|
|
tags are cpu=cpuN, host=foo, and datacenter=us-east with fields usage_idle
|
|
and usage_busy. They will receive a timestamp at collection time.
|
|
Each line must end in \n, just as the Influx line protocol does.
|
|
|
|
|
|
### Example 3 - Graphite
|
|
|
|
We can also change the data_format to "graphite" to use the metrics collecting scripts such as (compatible with graphite):
|
|
|
|
* Nagios [Mertics Plugins] (https://exchange.nagios.org/directory/Plugins)
|
|
* Sensu [Mertics Plugins] (https://github.com/sensu-plugins)
|
|
|
|
In this example a script called /tmp/test.sh and a script called /tmp/test2.sh are configured for [[inputs.exec]] in graphite format.
|
|
|
|
#### Configuration
|
|
```
|
|
# Read flattened metrics from one or more commands that output JSON to stdout
|
|
[[inputs.exec]]
|
|
# Shell/commands array
|
|
commands = ["/tmp/test.sh","/tmp/test2.sh"]
|
|
|
|
# Data format to consume. This can be "json", "influx" or "graphite" (line-protocol)
|
|
# NOTE json only reads numerical measurements, strings and booleans are ignored.
|
|
data_format = "graphite"
|
|
|
|
# measurement name suffix (for separating different commands)
|
|
name_suffix = "_mycollector"
|
|
|
|
## Below configuration will be used for data_format = "graphite", can be ignored for other data_format
|
|
## If matching multiple measurement files, this string will be used to join the matched values.
|
|
separator = "."
|
|
|
|
## Each template line requires a template pattern. It can have an optional
|
|
## filter before the template and separated by spaces. It can also have optional extra
|
|
## tags following the template. Multiple tags should be separated by commas and no spaces
|
|
## similar to the line protocol format. The can be only one default template.
|
|
## Templates support below format:
|
|
## 1. filter + template
|
|
## 2. filter + template + extra tag
|
|
## 3. filter + template with field key
|
|
## 4. default template
|
|
templates = [
|
|
"*.app env.service.resource.measurement",
|
|
"stats.* .host.measurement* region=us-west,agent=sensu",
|
|
"stats2.* .host.measurement.field",
|
|
"measurement*"
|
|
]
|
|
```
|
|
Graphite messages are in this format:
|
|
|
|
```
|
|
metric_path value timestamp\n
|
|
```
|
|
|
|
__metric_path__ is the metric namespace that you want to populate.
|
|
__value__ is the value that you want to assign to the metric at this time.
|
|
__timestamp__ is the unix epoch time.
|
|
|
|
And test.sh/test2.sh will output:
|
|
|
|
```
|
|
sensu.metric.net.server0.eth0.rx_packets 461295119435 1444234982
|
|
sensu.metric.net.server0.eth0.tx_bytes 1093086493388480 1444234982
|
|
sensu.metric.net.server0.eth0.rx_bytes 1015633926034834 1444234982
|
|
sensu.metric.net.server0.eth0.tx_errors 0 1444234982
|
|
sensu.metric.net.server0.eth0.rx_errors 0 1444234982
|
|
sensu.metric.net.server0.eth0.tx_dropped 0 1444234982
|
|
sensu.metric.net.server0.eth0.rx_dropped 0 1444234982
|
|
```
|
|
|
|
The templates configuration will be used to parse the graphite metrics to support influxdb/opentsdb tagging store engines.
|
|
|
|
More detail information about templates, please refer to [The graphite Input] (https://github.com/influxdata/influxdb/blob/master/services/graphite/README.md)
|