DESCRIPTION

Provides LWRP's and service recipes to install and configure Sensu, a monitoring framework.

This cookbook provides the building blocks for creating a monitoring cookbook specific to your environment (wrapper).

An example wrapper cookbook can be found HERE.

How to Write Reusable Chef Cookbooks

TESTING

This cookbook comes with a Gemfile, Cheffile, and a Vagrantfile for testing and evaluating Sensu.

cd examples
gem install bundler
bundle install
librarian-chef install
vagrant up
vagrant ssh

COOKBOOK DEPENDENCIES

• APT
• YUM
• Windows
• RabbitMQ
• Redis*

REQUIREMENTS

SSL configuration

Running Sensu with SSL is recommended, this cookbook uses a data bag sensu, with an item ssl, containing the SSL certificates required. This cookbook comes with a tool to generate the certificates and data bag item. If the integrity of the certificates is ever compromised, you must regenerate and redeploy them.

cd examples/ssl
./ssl_certs.sh generate
knife data bag create sensu
knife data bag from file sensu ssl.json
./ssl_certs.sh clean

RECIPES

sensu::default

Installs Sensu and creates a base configuration file, intended to be extended. This recipe must be included before any of the Sensu LWRP's can be used. This recipe does not enable or start any services.

sensu::rabbitmq

Installs and configures RabbitMQ for Sensu, from configuring SSL to creating a vhost and credentials. This recipe relies heavily on the community RabbitMQ cookbook LWRP's.

sensu::redis

Installs and configures Redis for Sensu.

sensu::server_service

Enables and starts the Sensu server.

sensu::client_service

Enables and starts the Sensu client.

sensu::api_service

Enables and starts the Sensu API.

sensu::dashboard_service

Enables and starts the Sensu dashboard.

ATTRIBUTES

Installation

node.sensu.version - Sensu build to install.

node.sensu.use_unstable_repo - If the build resides on the "unstable" repository.

node.sensu.directory - Sensu configuration directory.

node.sensu.log_directory - Sensu log directory.

node.sensu.use_ssl - If Sensu and RabbitMQ are to use SSL.

node.sensu.use_embedded_ruby - If Sensu Ruby handlers and plugins are to use the embedded Ruby in the monolithic package.

RabbitMQ

node.sensu.rabbitmq.host - RabbitMQ host.

node.sensu.rabbitmq.port - RabbitMQ port, usually for SSL.

node.sensu.rabbitmq.ssl - RabbitMQ SSL configuration, DO NOT EDIT THIS.

node.sensu.rabbitmq.vhost - RabbitMQ vhost for Sensu.

node.sensu.rabbitmq.user - RabbitMQ user for Sensu.

node.sensu.rabbitmq.password - RabbitMQ password for Sensu.

Redis

node.sensu.redis.host - Redis host.

node.sensu.redis.port - Redis port.

Sensu API

node.sensu.api.host - Sensu API host, for other services to reach it.

node.sensu.api.port - Sensu API port.

Sensu Dashboard

node.sensu.dashboard.port - Sensu Dashboard port.

node.sensu.dashboard.user - Sensu basic authentication username.

node.sensu.dashboard.password - Sensu basic authentication password.

LWRP'S

Define a client

sensu_client node.name do
  address node.ipaddress
  subscriptions node.roles + ["all"]
  additional(:cluster => node.cluster)
end

Define a handler

sensu_handler "pagerduty" do
  type "pipe"
  command "pagerduty.rb"
  severities ["ok", "critical"]
end

Define a check

sensu_check "redis_process" do
  command "check-procs.rb -p redis-server -C 1"
  handlers ["default"]
  subscribers ["redis"]
  interval 30
  additional(:notification => "Redis is not running")
end

Define a filter

sensu_filter "environment" do
  attributes(:client => {:environment => "development"})
  negate true
end

Define a mutator

sensu_mutator "opentsdb" do
  command "opentsdb.rb"
end

Define a custom configuration snippet

sensu_snippet "irc" do
  content(:uri => "irc://sensu:[email protected]:6667#channel")
end

SUPPORT

Please visit #sensu on irc.freenode.net and we will be more than happy to help.