graphite

README

Introduction

The graphite plugin allows measurements to be saved using the graphite line protocol. By default, enabling the graphite plugin will allow you to collect metrics and store them using the metric name as the measurement. If you send a metric named servers.localhost.cpu.loadavg.10, it will store the full metric name as the measurement with no extracted tags.

While this default setup works, it is not the ideal way to store measurements in InfluxDB since it does not take advantage of tags. It also will not perform optimally with a large dataset sizes since queries will be forced to use regexes which is known to not scale well.

To extract tags from metrics, one or more templates must be configured to parse metrics into tags and measurements.

Templates

Templates allow matching parts of a metric name to be used as tag names in the stored metric. They have a similar format to graphite metric names. The values in between the separators are used as the tag name. The location of the tag name that matches the same position as the graphite metric section is used as the value. If there is no value, the graphite portion is skipped.

The special value measurement is used to define the measurement name. It can have a trailing * to indicate that the remainder of the metric should be used. If a measurement is not specified, the full metric name is used.

Basic Matching

servers.localhost.cpu.loadavg.10

• Template: .host.resource.measurement*
• Output: measurement =loading.10 tags =host=localhost resource=cpu

Multiple Measurement Matching

The measurement can be specified multiple times in a template to provide more control over the measurement name. Multiple values will be joined together using the Separator config variable. By default, this value is ..

servers.localhost.cpu.cpu0.user

• Template: .host.measurement.cpu.measurement
• Output: measurement = cpu.user tags = host=localhost cpu=cpu0

Since '.' requires queries on measurements to be double-quoted, you may want to set this to _ to simplify querying parsed metrics.

servers.localhost.cpu.cpu0.user

• Separator: _
• Template: .host.measurement.cpu.measurement
• Output: measurement = cpu_user tags = host=localhost cpu=cpu0

Adding Tags

Additional tags can be added to a metric that don't exist on the received metric. You can add additional tags by specifying them after the pattern. Tags have the same format as the line protocol. Multiple tags are separated by commas.

servers.localhost.cpu.loadavg.10

• Template: .host.resource.measurement* region=us-west,zone=1a
• Output: measurement = loading.10 tags = host=localhost resource=cpu region=us-west zone=1a

Multiple Templates

One template may not match all metrics. For example, using multiple plugins with diamond will produce metrics in different formats. If you need to use multiple templates, you'll need to define a prefix filter that must match before the template can be applied.

Filters

Filters have a similar format to templates but work more like wildcard expressions. When multiple filters would match a metric, the more specific one is chosen. Filters are configured by adding them before the template.

For example,

servers.localhost.cpu.loadavg.10
servers.host123.elasticsearch.cache_hits 100
servers.host456.mysql.tx_count 10

• servers.* would match all values
• servers.*.mysql would match servers.host456.mysql.tx_count 10
• servers.localhost.* would match servers.localhost.cpu.loadavg

Default Templates

If no template filters are defined or you want to just have one basic template, you can define a default template. This template will apply to any metric that has not already matched a filter.

dev.http.requests.200
prod.myapp.errors.count
dev.db.queries.count

• env.app.measurement* would create
  • measurement=requests.200 tags=env=dev,app=http
  • measurement= errors.count tags=env=prod,app=myapp
  • measurement=queries.count tags=env=dev,app=db

Global Tags

If you need to add the same set of tags to all metrics, you can define them globally at the plugin level and not within each template description.

Minimal Config

[[graphite]]
  enabled = true
  # bind-address = ":2003"
  # protocol = "tcp"
  # consistency-level = "one"

  ### If matching multiple measurement files, this string will be used to join the matched values.
  # separator = "."

  ### Default tags that will be added to all metrics.  These can be overridden at the template level
  ### or by tags extracted from metric
  # tags = ["region=us-east", "zone=1c"]

  ### 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 = [
  #   "*.app env.service.resource.measurement",
  #   # Default template
  #   "server.*",
 #]

Customized Config ```

[[graphite]] enabled = true separator = "_" tags = ["region=us-east", "zone=1c"] templates = [ # filter + template "*.app env.service.resource.measurement",

 # filter + template + extra tag
 "stats.* .host.measurement* region=us-west,agent=sensu",

  # default template. Ignore the first graphite component "servers"
 ".measurement*",

]

Documentation

Index

• Constants
• func NewTemplate(pattern string, defaultTags tsdb.Tags, separator string) (*template, error)
• type Config
  • func NewConfig() Config
  • func (c *Config) DefaultTags() tsdb.Tags
  • func (c *Config) Validate() error
  • func (c *Config) WithDefaults() *Config
• type Options
• type Parser
  • func NewParser(templates []string, defaultTags tsdb.Tags) (*Parser, error)
  • func NewParserWithOptions(options Options) (*Parser, error)
  • func (p *Parser) Parse(line string) (tsdb.Point, error)
• type Service
  • func NewService(c Config) (*Service, error)
  • func (s *Service) Addr() net.Addr
  • func (s *Service) Close() error
  • func (s *Service) Open() error
  • func (s *Service) SetLogger(l *log.Logger)

Constants

const (
	// DefaultBindAddress is the default binding interface if none is specified.
	DefaultBindAddress = ":2003"

	// DefaultDatabase is the default database if none is specified.
	DefaultDatabase = "graphite"

	// DefaultProtocol is the default IP protocol used by the Graphite input.
	DefaultProtocol = "tcp"

	// DefaultConsistencyLevel is the default write consistency for the Graphite input.
	DefaultConsistencyLevel = "one"

	// DefaultSeparator is the default join character to use when joining multiple
	// measurment parts in a template.
	DefaultSeparator = "."
)

Functions

func NewTemplate

func NewTemplate(pattern string, defaultTags tsdb.Tags, separator string) (*template, error)

Types

type Config

type Config struct {
	BindAddress      string        `toml:"bind-address"`
	Database         string        `toml:"database"`
	Enabled          bool          `toml:"enabled"`
	Protocol         string        `toml:"protocol"`
	BatchSize        int           `toml:"batch-size"`
	BatchTimeout     toml.Duration `toml:"batch-timeout"`
	ConsistencyLevel string        `toml:"consistency-level"`
	Templates        []string      `toml:"templates"`
	Tags             []string      `toml:"tags"`
	Separator        string        `toml:"separator"`
}

Config represents the configuration for Graphite endpoints.

func NewConfig

func NewConfig() Config

NewConfig returns a new Config with defaults.

func (*Config) DefaultTags

func (c *Config) DefaultTags() tsdb.Tags

func (*Config) Validate

func (c *Config) Validate() error

func (*Config) WithDefaults

func (c *Config) WithDefaults() *Config

WithDefaults takes the given config and returns a new config with any required default values set.

type Options

type Options struct {
	Separator   string
	Templates   []string
	DefaultTags tsdb.Tags
}

Options are configurable values that can be provided to a Parser

type Parser

type Parser struct {
	// contains filtered or unexported fields
}

Parser encapsulates a Graphite Parser.

func NewParser

func NewParser(templates []string, defaultTags tsdb.Tags) (*Parser, error)

NewParser returns a GraphiteParser instance.

func NewParserWithOptions

func NewParserWithOptions(options Options) (*Parser, error)

NewParserWithOptions returns a graphite parser using the given options

func (*Parser) Parse

func (p *Parser) Parse(line string) (tsdb.Point, error)

Parse performs Graphite parsing of a single line.

type Service

type Service struct {
	PointsWriter interface {
		WritePoints(p *cluster.WritePointsRequest) error
	}
	MetaStore interface {
		WaitForLeader(d time.Duration) error
		CreateDatabaseIfNotExists(name string) (*meta.DatabaseInfo, error)
	}
	// contains filtered or unexported fields
}

func NewService

func NewService(c Config) (*Service, error)

NewService returns an instance of the Graphite service.

func (*Service) Addr

func (s *Service) Addr() net.Addr

func (*Service) Close

func (s *Service) Close() error

Close stops all data processing on the Graphite input.

func (*Service) Open

func (s *Service) Open() error

Open starts the Graphite input processing data.

func (*Service) SetLogger

func (s *Service) SetLogger(l *log.Logger)

SetLogger sets the internal logger to the logger passed in.