0.3.0: update README and documentation
This commit is contained in:
Cameron Sparr
parent
9c5db1057d
commit
7499c1f969
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@ -11,8 +11,11 @@ directory.
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- **breaking change** `jolokia` plugin: must use global tag/drop/pass parameters
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for configuration.
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- **breaking change** `twemproxy` plugin: `prefix` option removed.
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- **breaking change** `procstat` cpu measurements are now prepended with `cpu_time_` instead of
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only `cpu_`
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- **breaking change** `procstat` cpu measurements are now prepended with `cpu_time_`
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instead of only `cpu_`
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- **breaking change** some command-line flags have been renamed to separate words.
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`-configdirectory` -> `-config-directory`, `-filter` -> `-input-filter`,
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`-outputfilter` -> `-output-filter`
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- The prometheus plugin schema has not been changed (measurements have not been
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aggregated).
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@ -1,6 +1,6 @@
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# Telegraf Configuration
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## Generating a config file
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## Generating a Configuration File
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A default Telegraf config file can be generated using the `-sample-config` flag,
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like this: `telegraf -sample-config`
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@ -9,7 +9,20 @@ To generate a file with specific inputs and outputs, you can use the
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`-input-filter` and `-output-filter` flags, like this:
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`telegraf -sample-config -input-filter cpu:mem:net:swap -output-filter influxdb:kafka`
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## Plugin Configuration
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## Telegraf Agent Configuration
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Telegraf has a few options you can configure under the `agent` section of the
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config.
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* **hostname**: The hostname is passed as a tag. By default this will be
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the value returned by `hostname` on the machine running Telegraf.
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You can override that value here.
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* **interval**: How often to gather metrics. Uses a simple number +
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unit parser, e.g. "10s" for 10 seconds or "5m" for 5 minutes.
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* **debug**: Set to true to gather and send metrics to STDOUT as well as
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InfluxDB.
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## Input Configuration
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There are some configuration options that are configurable per plugin:
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@ -22,7 +35,7 @@ There are some configuration options that are configurable per plugin:
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global interval, but if one particular plugin should be run less or more often,
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you can configure that here.
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### Plugin Filters
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### Input Filters
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There are also filters that can be configured per plugin:
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@ -36,7 +49,7 @@ match against the tag name, and if it matches the measurement is emitted.
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* **tagdrop**: The inverse of tagpass. If a tag matches, the measurement is not
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emitted. This is tested on measurements that have passed the tagpass test.
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### Plugin Configuration Examples
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### Input Configuration Examples
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This is a full working config that will output CPU data to an InfluxDB instance
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at 192.168.59.103:8086, tagging measurements with dc="denver-1". It will output
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@ -57,8 +70,8 @@ fields which begin with `time_`.
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database = "telegraf" # required.
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precision = "s"
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# PLUGINS
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[plugins]
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# INPUTS
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[inputs]
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[[inputs.cpu]]
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percpu = true
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totalcpu = false
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@ -66,10 +79,10 @@ fields which begin with `time_`.
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drop = ["time_*"]
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```
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### Plugin Config: tagpass and tagdrop
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### Input Config: tagpass and tagdrop
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```toml
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[plugins]
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[inputs]
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[[inputs.cpu]]
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percpu = true
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totalcpu = false
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@ -88,7 +101,7 @@ fields which begin with `time_`.
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path = [ "/opt", "/home*" ]
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```
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### Plugin Config: pass and drop
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### Input Config: pass and drop
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```toml
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# Drop all metrics for guest & steal CPU usage
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@ -102,7 +115,7 @@ fields which begin with `time_`.
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pass = ["inodes*"]
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```
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### Plugin config: prefix, suffix, and override
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### Input config: prefix, suffix, and override
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This plugin will emit measurements with the name `cpu_total`
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@ -122,7 +135,7 @@ This will emit measurements with the name `foobar`
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totalcpu = true
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```
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### Plugin config: tags
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### Input config: tags
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This plugin will emit measurements with two additional tags: `tag1=foo` and
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`tag2=bar`
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@ -136,10 +149,12 @@ This plugin will emit measurements with two additional tags: `tag1=foo` and
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tag2 = "bar"
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```
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### Multiple plugins of the same type
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### Multiple inputs of the same type
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Additional plugins (or outputs) of the same type can be specified,
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just define more instances in the config file:
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Additional inputs (or outputs) of the same type can be specified,
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just define more instances in the config file. It is highly recommended that
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you utilize `name_override`, `name_prefix`, or `name_suffix` config options
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to avoid measurement collisions:
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```toml
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[[inputs.cpu]]
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@ -149,6 +164,7 @@ just define more instances in the config file:
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[[inputs.cpu]]
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percpu = true
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totalcpu = false
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name_override = "percpu_usage"
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drop = ["cpu_time*"]
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```
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@ -158,8 +174,8 @@ Telegraf also supports specifying multiple output sinks to send data to,
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configuring each output sink is different, but examples can be
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found by running `telegraf -sample-config`.
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Outputs also support the same configurable options as plugins
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(pass, drop, tagpass, tagdrop), added in 0.2.4
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Outputs also support the same configurable options as inputs
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(pass, drop, tagpass, tagdrop)
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```toml
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[[outputs.influxdb]]
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@ -3,7 +3,7 @@
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Before we can merge a pull request, you will need to sign the CLA,
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which can be found [on our website](http://influxdb.com/community/cla.html)
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## Plugins
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## Input Plugins
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This section is for developers who want to create new collection inputs.
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Telegraf is entirely plugin driven. This interface allows for operators to
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@ -13,23 +13,21 @@ to create new ways of generating metrics.
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Plugin authorship is kept as simple as possible to promote people to develop
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and submit new inputs.
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### Plugin Guidelines
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### Input Plugin Guidelines
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* A plugin must conform to the `inputs.Input` interface.
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* Each generated metric automatically has the name of the plugin that generated
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it prepended. This is to keep plugins honest.
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* Plugins should call `inputs.Add` in their `init` function to register themselves.
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* Input Plugins should call `inputs.Add` in their `init` function to register themselves.
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See below for a quick example.
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* To be available within Telegraf itself, plugins must add themselves to the
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* Input Plugins must be added to the
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`github.com/influxdb/telegraf/plugins/inputs/all/all.go` file.
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* The `SampleConfig` function should return valid toml that describes how the
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plugin can be configured. This is include in `telegraf -sample-config`.
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* The `Description` function should say in one line what this plugin does.
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### Plugin interface
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### Input interface
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```go
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type Plugin interface {
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type Input interface {
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SampleConfig() string
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Description() string
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Gather(Accumulator) error
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@ -52,45 +50,25 @@ type Accumulator interface {
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The way that a plugin emits metrics is by interacting with the Accumulator.
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The `Add` function takes 3 arguments:
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* **measurement**: A string description of the metric. For instance `bytes_read` or `faults`.
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* **measurement**: A string description of the metric. For instance `bytes_read` or `
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faults`.
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* **value**: A value for the metric. This accepts 5 different types of value:
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* **int**: The most common type. All int types are accepted but favor using `int64`
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Useful for counters, etc.
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* **float**: Favor `float64`, useful for gauges, percentages, etc.
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* **bool**: `true` or `false`, useful to indicate the presence of a state. `light_on`, etc.
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* **string**: Typically used to indicate a message, or some kind of freeform information.
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* **time.Time**: Useful for indicating when a state last occurred, for instance `light_on_since`.
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* **bool**: `true` or `false`, useful to indicate the presence of a state. `light_on`,
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etc.
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* **string**: Typically used to indicate a message, or some kind of freeform
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information.
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* **time.Time**: Useful for indicating when a state last occurred, for instance `
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light_on_since`.
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* **tags**: This is a map of strings to strings to describe the where or who
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about the metric. For instance, the `net` plugin adds a tag named `"interface"`
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set to the name of the network interface, like `"eth0"`.
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The `AddFieldsWithTime` allows multiple values for a point to be passed. The values
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used are the same type profile as **value** above. The **timestamp** argument
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allows a point to be registered as having occurred at an arbitrary time.
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Let's say you've written a plugin that emits metrics about processes on the current host.
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```go
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type Process struct {
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CPUTime float64
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MemoryBytes int64
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PID int
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}
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func Gather(acc inputs.Accumulator) error {
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for _, process := range system.Processes() {
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tags := map[string]string {
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"pid": fmt.Sprintf("%d", process.Pid),
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}
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acc.Add("cpu", process.CPUTime, tags, time.Now())
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acc.Add("memory", process.MemoryBytes, tags, time.Now())
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}
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}
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```
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### Plugin Example
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### Input Plugin Example
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```go
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package simple
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@ -126,15 +104,15 @@ func init() {
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}
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```
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## Service Plugins
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## Service Input Plugins
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This section is for developers who want to create new "service" collection
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inputs. A service plugin differs from a regular plugin in that it operates
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a background service while Telegraf is running. One example would be the `statsd`
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plugin, which operates a statsd server.
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Service Plugins are substantially more complicated than a regular plugin, as they
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will require threads and locks to verify data integrity. Service Plugins should
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Service Input Plugins are substantially more complicated than a regular plugin, as they
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will require threads and locks to verify data integrity. Service Input Plugins should
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be avoided unless there is no way to create their behavior with a regular plugin.
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Their interface is quite similar to a regular plugin, with the addition of `Start()`
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@ -157,13 +135,13 @@ type ServicePlugin interface {
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}
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```
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## Outputs
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## Output Plugins
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This section is for developers who want to create a new output sink. Outputs
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are created in a similar manner as collection plugins, and their interface has
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similar constructs.
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### Output Guidelines
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### Output Plugin Guidelines
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* An output must conform to the `outputs.Output` interface.
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* Outputs should call `outputs.Add` in their `init` function to register themselves.
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@ -230,7 +208,7 @@ func init() {
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```
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## Service Outputs
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## Service Output Plugins
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This section is for developers who want to create new "service" output. A
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service output differs from a regular output in that it operates a background service
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@ -243,7 +221,7 @@ and `Stop()` methods.
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### Service Output Guidelines
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* Same as the `Output` guidelines, except that they must conform to the
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`inputs.ServiceOutput` interface.
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`output.ServiceOutput` interface.
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### Service Output interface
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@ -274,7 +252,7 @@ which would take some time to replicate.
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To overcome this situation we've decided to use docker containers to provide a
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fast and reproducible environment to test those services which require it.
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For other situations
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(i.e: https://github.com/influxdb/telegraf/blob/master/plugins/redis/redis_test.go )
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(i.e: https://github.com/influxdb/telegraf/blob/master/plugins/redis/redis_test.go)
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a simple mock will suffice.
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To execute Telegraf tests follow these simple steps:
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115
README.md
115
README.md
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@ -1,23 +1,35 @@
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# Telegraf - A native agent for InfluxDB [](https://circleci.com/gh/influxdata/telegraf)
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# Telegraf [](https://circleci.com/gh/influxdata/telegraf)
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Telegraf is an agent written in Go for collecting metrics from the system it's
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running on, or from other services, and writing them into InfluxDB.
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running on, or from other services, and writing them into InfluxDB or other
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[outputs](https://github.com/influxdata/telegraf#supported-output-plugins).
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Design goals are to have a minimal memory footprint with a plugin system so
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that developers in the community can easily add support for collecting metrics
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from well known services (like Hadoop, Postgres, or Redis) and third party
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APIs (like Mailchimp, AWS CloudWatch, or Google Analytics).
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We'll eagerly accept pull requests for new plugins and will manage the set of
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plugins that Telegraf supports. See the
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[contributing guide](CONTRIBUTING.md) for instructions on
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writing new inputs.
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New input and output plugins are designed to be easy to contribute,
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we'll eagerly accept pull
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requests and will manage the set of plugins that Telegraf supports.
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See the [contributing guide](CONTRIBUTING.md) for instructions on writing
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new plugins.
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## Installation:
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NOTE: Telegraf 0.3.x is **not** backwards-compatible with previous versions of
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telegraf, both in the database layout and the configuration file. 0.2.x will
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continue to be supported, see below for download links.
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TODO: link to blog post about 0.3.x changes.
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### Linux deb and rpm packages:
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Latest:
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* http://get.influxdb.org/telegraf/telegraf_0.3.0_amd64.deb
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* http://get.influxdb.org/telegraf/telegraf-0.3.0-1.x86_64.rpm
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0.2.x:
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* http://get.influxdb.org/telegraf/telegraf_0.2.4_amd64.deb
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* http://get.influxdb.org/telegraf/telegraf-0.2.4-1.x86_64.rpm
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@ -33,6 +45,11 @@ controlled via `systemctl [action] telegraf`
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### Linux binaries:
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Latest:
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* http://get.influxdb.org/telegraf/telegraf_linux_amd64_0.3.0.tar.gz
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* http://get.influxdb.org/telegraf/telegraf_linux_386_0.3.0.tar.gz
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* http://get.influxdb.org/telegraf/telegraf_linux_arm_0.3.0.tar.gz
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0.2.x:
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* http://get.influxdb.org/telegraf/telegraf_linux_amd64_0.2.4.tar.gz
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* http://get.influxdb.org/telegraf/telegraf_linux_386_0.2.4.tar.gz
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* http://get.influxdb.org/telegraf/telegraf_linux_arm_0.2.4.tar.gz
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@ -51,32 +68,6 @@ brew update
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brew install telegraf
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```
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### Version 0.3.0 Beta
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Version 0.3.0 will introduce many new breaking changes to Telegraf. For starters,
|
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plugin measurements will be aggregated into fields. This means that there will no
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longer be a `cpu_usage_idle` measurement, there will be a `cpu` measurement with
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a `usage_idle` field.
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There will also be config file changes, meaning that your 0.2.x Telegraf config
|
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files will no longer work properly. It is recommended that you use the
|
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`-sample-config` flag to generate a new config file to see what the changes are.
|
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You can also read the
|
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[0.3.0 configuration guide](https://github.com/influxdb/telegraf/blob/0.3.0/CONFIGURATION.md)
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||||
to see some of the new features and options available.
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You can read more about the justifications for the aggregated measurements
|
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[here](https://github.com/influxdb/telegraf/issues/152), and a more detailed
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breakdown of the work [here](https://github.com/influxdb/telegraf/pull/437).
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Once we're closer to a full release, there will be a detailed blog post
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explaining all the changes.
|
||||
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||||
* http://get.influxdb.org/telegraf/telegraf_0.3.0-beta2_amd64.deb
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||||
* http://get.influxdb.org/telegraf/telegraf-0.3.0_beta2-1.x86_64.rpm
|
||||
* http://get.influxdb.org/telegraf/telegraf_linux_amd64_0.3.0-beta2.tar.gz
|
||||
* http://get.influxdb.org/telegraf/telegraf_linux_386_0.3.0-beta2.tar.gz
|
||||
* http://get.influxdb.org/telegraf/telegraf_linux_arm_0.3.0-beta2.tar.gz
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||||
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### From Source:
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||||
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Telegraf manages dependencies via [gdm](https://github.com/sparrc/gdm),
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@ -91,37 +82,49 @@ if you don't have it already. You also must build with golang version 1.4+.
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### How to use it:
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* Run `telegraf -sample-config > telegraf.conf` to create an initial configuration.
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* Or run `telegraf -sample-config -input-filter cpu:mem -output-filter influxdb > telegraf.conf`.
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to create a config file with only CPU and memory plugins defined, and InfluxDB
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output defined.
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* Edit the configuration to match your needs.
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* Run `telegraf -config telegraf.conf -test` to output one full measurement
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sample to STDOUT. NOTE: you may want to run as the telegraf user if you are using
|
||||
the linux packages `sudo -u telegraf telegraf -config telegraf.conf -test`
|
||||
* Run `telegraf -config telegraf.conf` to gather and send metrics to configured outputs.
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* Run `telegraf -config telegraf.conf -input-filter system:swap`.
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||||
to run telegraf with only the system & swap plugins defined in the config.
|
||||
```console
|
||||
$ telegraf -help
|
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Telegraf, The plugin-driven server agent for reporting metrics into InfluxDB
|
||||
|
||||
## Telegraf Options
|
||||
Usage:
|
||||
|
||||
Telegraf has a few options you can configure under the `agent` section of the
|
||||
config.
|
||||
telegraf <flags>
|
||||
|
||||
* **hostname**: The hostname is passed as a tag. By default this will be
|
||||
the value returned by `hostname` on the machine running Telegraf.
|
||||
You can override that value here.
|
||||
* **interval**: How often to gather metrics. Uses a simple number +
|
||||
unit parser, e.g. "10s" for 10 seconds or "5m" for 5 minutes.
|
||||
* **debug**: Set to true to gather and send metrics to STDOUT as well as
|
||||
InfluxDB.
|
||||
The flags are:
|
||||
|
||||
-config <file> configuration file to load
|
||||
-test gather metrics once, print them to stdout, and exit
|
||||
-sample-config print out full sample configuration to stdout
|
||||
-config-directory directory containing additional *.conf files
|
||||
-input-filter filter the input plugins to enable, separator is :
|
||||
-output-filter filter the output plugins to enable, separator is :
|
||||
-usage print usage for a plugin, ie, 'telegraf -usage mysql'
|
||||
-version print the version to stdout
|
||||
|
||||
Examples:
|
||||
|
||||
# generate a telegraf config file:
|
||||
telegraf -sample-config > telegraf.conf
|
||||
|
||||
# generate config with only cpu input & influxdb output plugins defined
|
||||
telegraf -sample-config -input-filter cpu -output-filter influxdb
|
||||
|
||||
# run a single telegraf collection, outputing metrics to stdout
|
||||
telegraf -config telegraf.conf -test
|
||||
|
||||
# run telegraf with all plugins defined in config file
|
||||
telegraf -config telegraf.conf
|
||||
|
||||
# run telegraf, enabling the cpu & memory input, and influxdb output plugins
|
||||
telegraf -config telegraf.conf -input-filter cpu:mem -output-filter influxdb
|
||||
```
|
||||
|
||||
## Configuration
|
||||
|
||||
See the [configuration guide](CONFIGURATION.md) for a rundown of the more advanced
|
||||
configuration options.
|
||||
|
||||
## Supported Plugins
|
||||
## Supported Input Plugins
|
||||
|
||||
**You can view usage instructions for each plugin by running**
|
||||
`telegraf -usage <pluginname>`.
|
||||
|
|
@ -166,7 +169,7 @@ Telegraf currently has support for collecting metrics from:
|
|||
* diskio
|
||||
* swap
|
||||
|
||||
## Supported Service Plugins
|
||||
## Supported Input Service Plugins
|
||||
|
||||
Telegraf can collect metrics via the following services:
|
||||
|
||||
|
|
@ -176,7 +179,7 @@ Telegraf can collect metrics via the following services:
|
|||
We'll be adding support for many more over the coming months. Read on if you
|
||||
want to add support for another service or third-party API.
|
||||
|
||||
## Supported Outputs
|
||||
## Supported Output Plugins
|
||||
|
||||
* influxdb
|
||||
* nsq
|
||||
|
|
|
|||
|
|
@ -31,43 +31,50 @@ var fOutputFilters = flag.String("output-filter", "",
|
|||
var fUsage = flag.String("usage", "",
|
||||
"print usage for a plugin, ie, 'telegraf -usage mysql'")
|
||||
|
||||
var fInputFiltersLegacy = flag.String("filter", "",
|
||||
"filter the plugins to enable, separator is :")
|
||||
var fOutputFiltersLegacy = flag.String("outputfilter", "",
|
||||
"filter the outputs to enable, separator is :")
|
||||
var fConfigDirectoryLegacy = flag.String("configdirectory", "",
|
||||
"directory containing additional *.conf files")
|
||||
|
||||
// Telegraf version
|
||||
// -ldflags "-X main.Version=`git describe --always --tags`"
|
||||
var Version string
|
||||
|
||||
const usage = `Telegraf, The plugin-driven server agent for reporting metrics into InfluxDB
|
||||
const usage = `Telegraf, The plugin-driven server agent for collecting and reporting metrics.
|
||||
|
||||
Usage:
|
||||
|
||||
telegraf <flags>
|
||||
telegraf <flags>
|
||||
|
||||
The flags are:
|
||||
|
||||
-config <file> configuration file to load
|
||||
-test gather metrics once, print them to stdout, and exit
|
||||
-sample-config print out full sample configuration to stdout
|
||||
-config-directory directory containing additional *.conf files
|
||||
-input-filter filter the input plugins to enable, separator is :
|
||||
-output-filter filter the output plugins to enable, separator is :
|
||||
-usage print usage for a plugin, ie, 'telegraf -usage mysql'
|
||||
-version print the version to stdout
|
||||
-config <file> configuration file to load
|
||||
-test gather metrics once, print them to stdout, and exit
|
||||
-sample-config print out full sample configuration to stdout
|
||||
-config-directory directory containing additional *.conf files
|
||||
-input-filter filter the input plugins to enable, separator is :
|
||||
-output-filter filter the output plugins to enable, separator is :
|
||||
-usage print usage for a plugin, ie, 'telegraf -usage mysql'
|
||||
-version print the version to stdout
|
||||
|
||||
Examples:
|
||||
|
||||
# generate a telegraf config file:
|
||||
telegraf -sample-config > telegraf.conf
|
||||
# generate a telegraf config file:
|
||||
telegraf -sample-config > telegraf.conf
|
||||
|
||||
# generate a telegraf config file with only cpu input and influxdb output enabled
|
||||
telegraf -sample-config -input-filter cpu -output-filter influxdb
|
||||
# generate config with only cpu input & influxdb output plugins defined
|
||||
telegraf -sample-config -input-filter cpu -output-filter influxdb
|
||||
|
||||
# run a single telegraf collection, outputting metrics to stdout
|
||||
telegraf -config telegraf.conf -test
|
||||
# run a single telegraf collection, outputing metrics to stdout
|
||||
telegraf -config telegraf.conf -test
|
||||
|
||||
# run telegraf with all plugins defined in config file
|
||||
telegraf -config telegraf.conf
|
||||
# run telegraf with all plugins defined in config file
|
||||
telegraf -config telegraf.conf
|
||||
|
||||
# run telegraf, enabling only the cpu and memory inputs and influxdb output
|
||||
telegraf -config telegraf.conf -input-filter cpu:mem -output-filter influxdb
|
||||
# run telegraf, enabling the cpu & memory input, and influxdb output plugins
|
||||
telegraf -config telegraf.conf -input-filter cpu:mem -output-filter influxdb
|
||||
`
|
||||
|
||||
func main() {
|
||||
|
|
@ -79,12 +86,20 @@ func main() {
|
|||
}
|
||||
|
||||
var inputFilters []string
|
||||
if *fInputFiltersLegacy != "" {
|
||||
inputFilter := strings.TrimSpace(*fInputFiltersLegacy)
|
||||
inputFilters = strings.Split(":"+inputFilter+":", ":")
|
||||
}
|
||||
if *fInputFilters != "" {
|
||||
inputFilter := strings.TrimSpace(*fInputFilters)
|
||||
inputFilters = strings.Split(":"+inputFilter+":", ":")
|
||||
}
|
||||
|
||||
var outputFilters []string
|
||||
if *fOutputFiltersLegacy != "" {
|
||||
outputFilter := strings.TrimSpace(*fOutputFiltersLegacy)
|
||||
outputFilters = strings.Split(":"+outputFilter+":", ":")
|
||||
}
|
||||
if *fOutputFilters != "" {
|
||||
outputFilter := strings.TrimSpace(*fOutputFilters)
|
||||
outputFilters = strings.Split(":"+outputFilter+":", ":")
|
||||
|
|
@ -129,6 +144,13 @@ func main() {
|
|||
return
|
||||
}
|
||||
|
||||
if *fConfigDirectoryLegacy != "" {
|
||||
err = c.LoadDirectory(*fConfigDirectoryLegacy)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
if *fConfigDirectory != "" {
|
||||
err = c.LoadDirectory(*fConfigDirectory)
|
||||
if err != nil {
|
||||
|
|
|
|||
Loading…
Reference in New Issue