opsworks_sidekiq

This cookbook sets up an AWS OpsWorks instance to run sidekiq for a Rails application.

Adapted from Joey Aghion's opsworks_delayed_job.

This cookbook uses monit to manage 1 or more Sidekiq processes per machine, each with a customized concurrency level. This recipe is heavily integrated into the opsworks rails recipes.

Prerequisites

Assumes you have redis installed, configured and the connection with sidekiq established. This does not handle any redis connection setup.

Configuration Examples

By default, no sidekiq processes will be started.

Custom JSON

JSON such as the following added as custom JSON to the stack:

{
  "sidekiq": {
    "YOUR_APP_NAME": {
      "slacker": {
        "process_count": 2,
        "config" : {
          "concurrency": 5,
          "verbose": false,
          "queues": ["critical", "default", "low"]
        }
      },
      "hard_worker": {
        "config": {
          "concurrency": 40,
          "queues": [
            ["often", 7],
            ["default", 5],
            ["seldom", 3]
          ]
        }
      }
    }
  }
}

Will result in 3 monit managed sidekiq processes named sidekiq_slacker1, sidekiq_slacker2, and sidekiq_hard_worker1 on any instance with this set of cookbooks run. Each instance will also have config/sidekiq_slacker1.yml, config/sidekiq_slacker2.yml and config/sidekiq_hard_worker1.yml files containing the yaml representation of the contents of the config JSON object. By default there would only be one hard_worker process because process_count was not set. In this case the config/sidekiq_slacker1.yml would look like:

:concurrency: 10
:verbose: false
:queues
  - critical
  - default
  - low

By just converting your JSON config object to yaml we support any plugins that use sidekiq.yml.

You can use any name, such as "import_process", "one", "emailer", "slacker", or "fred". You are not stuck to meaningless names such as "worker1".

If the instance is not in a opsworks Rails application server layer then a database.yml and memcached.yml will be generated if they don't exist.

'Wrapper/Layer' Cookbooks

For more fine grained control and less brittle JSON configuration it is suggested to use wrapper/layer recipes and override attributes in it.

For example, if you have one server that imports files only available to that one server, and another that performs other jobs you might have two custom layers, "sidekiq_import" and "sidekiq_rest". For each layer create a cooresponding cookbook. Each would have an attributes/default.rb file that sets the proper attributes, for example:

cookbooks/sidekiq_import/attributes/default.rb

override['sidekiq']['YOUR_APP_NAME']['importer']['process_count'] = 4
override['sidekiq']['YOUR_APP_NAME']['importer']['config']['concurrency'] = 20
override['sidekiq']['YOUR_APP_NAME']['importer']['config']['queues'] = ['import_csv', 'import_xml', 'import_json']
# ...

cookbooks/sidekiq_rest/attribues/default.rb

override['sidekiq']['YOUR_APP_NAME']['worker']['process_count'] = 4
override['sidekiq']['YOUR_APP_NAME']['worker']['config']['concurrency'] = 40
override['sidekiq']['YOUR_APP_NAME']['worker']['config']['queues'] = ['cricital', 'default', 'low']

OpsWorks Set-Up

The layer's custom chef recipes should be associated with events as follows:

• Setup: opsworks_sidekiq::setup
• Configure: opsworks_sidekiq::configure
• Deploy: opsworks_sidekiq::deploy
• Undeploy: opsworks_sidekiq::undeploy
• Shutdown: opsworks_sidekiq::stop

Logging

Logging can be done to either a file or syslog.

To log to a file simply include the logfile path in the config. EG:

override['sidekiq']['YOUR_APP_NAME']['worker']['config']['logfile'] = '/var/log/sidekiq_worker'

To log to syslog set the application syslog property to true.

override['sidekiq']['YOUR_APP_NAME']['syslog'] = true

License

See LICENSE.

Adaption to opsworks_sidekiq © 2013 Draker Inc. Original opsworks_delayed_job © 2013 Joey Aghion, Artsy Inc.