CrateDB Role

A naive (ATM) role to install a single CrateDB instance for purposes of serving as a prometheus long-term storage solution. In addition should support prometheus / cratedb_adapter (still WIP) - This moved to shelleg.prometheus

Requirements

It's all included ;) You probably want to use together with shelleg.prometheus Fully tested on Centos7 & Ubuntu-16.04 see ./tests directory

Role Variables

Flags / features:

• cratedb_adapter_prometheus_init: false - if set to true will connect to crate and create a metrics table

• 'cratedb_adapter_testing: false' - if set to true will install from testing repository ( needed 2.2.x for prometheus adapter to work)

• cratedb_user: crate

• cratedb_group: crate

• cratedb_listen_address: 0.0.0.0

• cratedb_listen_port: 4200

• cratedb_config_dir: /etc/crate/

Dependencies

None !

Testing this Role

travis-ci should be active using ansible-test-shim with docker see the .travis.yml at the root of this directory + the tests directory.

In addition for more complex testing you can use the Vagrantfile + servers.yml under the test folder:

The servers.yml alongside Vagrantfile allows to control

various aspects of Vagrant see the entire Vagrantfile for further details / see a small sample below:

srv.vm.provision :ansible do |ansible|
     ansible.limit = servers[:name]
  if servers["playbook"] == nil
     ansible.playbook = "./test.yml"
  else
     ansible.playbook = "./#{servers["playbook"]}"
  end
  if servers["inventory"] != nil
     ansible.inventory_path = servers["inventory"]
  end
      ansible.sudo = "true"
      ansible.sudo_user = "root"
      ansible.host_key_checking = "false"
      ansible.verbose = "-v"
      # in case we have requirements for ansible role under development
      ansible.galaxy_roles_path = "./site-roles/"
      # requirements file
      ansible.galaxy_role_file = "./requirements.yml"
      # extra_vars
      ansible.extra_vars = {
        some_var: "some_value",
        dict: {
          kay1: "val1",
          kay2: "val2"
        }
      }
end

Example Playbook

Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:

- hosts: servers
  roles:
     - role: shelleg.cratedb

Once Ansible run is complete:

Get Crate's admin UI vi http://{{ ansible_hostname }}:4200/admin in your browser.

License

Author Information

Haggai Philip Zagury