Lbrt

A tool to manage Librato. It defines the state of Librato using DSL, and updates Librato according to DSL.

Installation

Add this line to your application's Gemfile:

gem 'lbrt'

And then execute:

$ bundle

Or install it yourself as:

$ gem install lbrt

Usage

$ lbrt
Commands:
  lbrt alert SUBCOMMAND    # Manage alerts
  lbrt help [COMMAND]      # Describe available commands or one specific command
  lbrt metric SUBCOMMAND   # Manage metrics
  lbrt service SUBCOMMAND  # Manage services
  lbrt space SUBCOMMAND    # Manage spaces

Options:
  [--user=USER]
                           # Default: ENV['LIBRATO_USER']
  [--token=TOKEN]
                           # Default: ENV['LIBRATO_TOKEN]
  [--color], [--no-color]
                           # Default: true
  [--debug], [--no-debug]

$ lbrt help alert
Commands:
  lbrt alert apply FILE      # Apply alerts
  lbrt alert export [FILE]   # Export alerts
  lbrt alert help [COMMAND]  # Describe subcommands or one specific subcommand
  lbrt alert list            # Show alerts
  lbrt alert peco            # Show alert by peco

Options:
  [--target=TARGET]

$ brt help metric
Commands:
  lbrt metric help [COMMAND]  # Describe subcommands or one specific subcommand
  lbrt metric list            # Show metrics
  lbrt metric peco REGRXP     # Show metric by peco

Options:
  [--target=TARGET]

$ lbrt help service
Commands:
  lbrt service apply FILE      # Apply services
  lbrt service export [FILE]   # Export services
  lbrt service help [COMMAND]  # Describe subcommands or one specific subcommand
  lbrt service list            # Show services

Options:
  [--target=TARGET]

$ lbrt help space
Commands:
  lbrt space apply FILE      # Apply spaces
  lbrt space export [FILE]   # Export spaces
  lbrt space help [COMMAND]  # Describe subcommands or one specific subcommand
  lbrt space list            # Show spaces
  lbrt space peco            # Show space by peco

Options:
  [--target=TARGET]
  [--concurrency=N]
                            # Default: 32

Export/Apply

$ lbrt space export space.rb

$ cat space.rb
space "My Space" do
  chart "My Chart" do
    type "line"
    stream do
      metric "login-delay"
      type "gauge"
      ...

$ lbrt space apply space.rb --dry-run

$ lbrt space apply space.rb

DSL Example

Sevice

service "mail", "my email" do
  settings "addresses"=>"sugawara@example.com"
end

service "slack", "my slack" do
  settings "url"=>"https://hooks.slack.com/services/..."
end

Alert

alert "alert1" do
  description "My Alert1"
  attributes "runbook_url"=>"http://example.com"
  active true
  rearm_seconds 600
  rearm_per_signal false

  condition do
    type "below"
    metric_name "login-delay"
    source "foo.bar.com"
    threshold 1.0
    summary_function "sum"
  end

  service "mail", "my email"
end

alert "alert2" do
  description "My Alert2"
  active true
  rearm_seconds 600
  rearm_per_signal true

  condition do
    type "absent"
    metric_name "login-delay2"
    source nil
    duration 600
  end

  service "slack", "my slack"
end

Space

space "My Space1" do
  chart "chart1" do
    type "stacked"
    stream do
      metric "login-delay"
      type "gauge"
      source "*"
      group_function "average"
      summary_function "average"
    end
  end
end

space "My Space2" do
  chart "chart1" do
    type "line"
    stream do
      metric "login-delay"
      type "gauge"
      source "*"
      group_function "breakout"
      summary_function "average"
    end
  end

  chart "chart2" do
    type "line"
    stream do
      metric "login-delay2"
      type "gauge"
      source "*"
      group_function "breakout"
      summary_function "average"
    end
  end
end

Using template

template "dstat" do
  chart "total_cpu_usage" do
    type "stacked"
    stream do
      metric "dstat.#{context.space_name}.total_cpu_usage"
      type "gauge"
      source "*"
      group_function "breakout"
      summary_function "average"
    end
    max 100.0
  end

  chart "load_avg" do
    type "line"
    stream do
      metric "dstat.#{context.space_name}.load_avg"
      type "gauge"
      source "*"
      group_function "breakout"
      summary_function "average"
    end
  end
end

space "my-host-001" do
  include_template "dstat"
end

You can use the template in the alert and service.

template "my alert" do
  alert context.metric_name do
    description "desc"
    attributes "runbook_url"=>"http://url.com"
    active true
    rearm_seconds 600
    rearm_per_signal false

    condition do
      type "below"
      metric_name context.metric_name
      source nil
      threshold 4.0
      summary_function "sum"
    end

    service "mail", "my email"
  end
end

include_template "my alert", metric_name: 'login-delay'
include_template "my alert", metric_name: 'login-delay2'

template "alert set1" do
  alert "#{context.hostname}/login-delay" do
    description "desc"
    attributes "runbook_url"=>"http://example.com"
    active true
    rearm_seconds 600
    rearm_per_signal false

    condition do
      type "below"
      metric_name 'login-delay'
      source nil
      threshold 4.0
      summary_function "sum"
    end

    service "mail", "my email"
  end

  alert "#{context.hostname}/login-delay2" do
    description "desc"
    attributes "runbook_url"=>"http://example.com"
    active true
    rearm_seconds 600
    rearm_per_signal false

    condition do
      type "below"
      metric_name 'login-delay2'
      source nil
      threshold 4.0
      summary_function "sum"
    end

    service "mail", "my email"
  end
end

include_template "alert set1", hostname: 'host1'
include_template "alert set1", hostname: 'host2'

Show resource by peco

lbrt alert peco

lbrt metric peco

lbrt space peco

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