alexxnica / puppet-consul_template

A Puppet module to manage the config and jobs of Consul Template from Hashicorp

#consul_template for Puppet

NOTICE:

This fork is not backwards compatible with its upstream. The configuration mechanism has been modified to be driven by config_hash/config_defaults instead of individual parameters to provide access to the full set of options and avoid the need to make changes here as consul-template options evolve.

##Installation

###What This Module Affects

• Installs the consul-template binary (via url or package)
• Optionally installs a user to run it under
• Installs a configuration file (/etc/consul-template/config.json)
• Manages the consul-template service via upstart, sysv, or systemd

##Parameters

• purge_config_dir Default: true. If enabled, removes config files no longer managed by Puppet.
• config_mode Default: 0660. Mode set on config files and directories.
• bin_dir Default: /usr/local/bin. Path to the consul-template binaries
• arch Default: Read from facter. System architecture to use (amd64, x86_64, i386)
• version Default: 0.11.0. Version of consul-template to install
• install_method Default: url. When set to 'url', consul-template is downloaded and installed from source. If set to 'package', its installed using the system package manager.
• os Default: Read from facter.
• download_url Default: undef. URL to download consul-template from (when install_method is set to 'url')
• download_url_base Default: https://github.com/hashicorp/consul-template/releases/download/ Base URL to download consul-template from (when install_method is set to 'url')
• download_extension Default: zip. File extension of consul-template binary to be downloaded (when install_method is set to 'url')
• package_name Default: consul-template. Name of package to install
• package_ensure Default: latest.
• config_dir Default: /etc/consul-template. Path to store the consul-template configuration
• extra_options Default: ''. Extra options to be bassed to the consul-template agent. See https://github.com/hashicorp/consul-template#options
• service_enable Default: true.
• service_ensure Default: running.
• user Default: root. This used to be a default of consul-template and this caused much out-of-box pain for people.
• group Default: root.
• manage_user Default: false. Module handles creating the user.
• manage_group Default: false. Module handles creating the group.
• init_style Init style to use for consul-template service.
• config_hash Default: {}. Consul-template configuration options. See https://github.com/hashicorp/consul-template#options
• config_defaults Default: {}. Consul-template configuration option defaults.

##Usage

The simplest way to use this module is:

include consul_template

consul-template options can be passed via hiera:

consul_template::config_defaults:
  deduplicate:
    enabled: true
  log_level: info
  retry: 10s
  syslog: true
  token: <consul token>

Or to specify class parameters:

class { 'consul_template':
    service_enable   => false
    init_style       => 'upstart',
    config_hash      => {
      log_level => 'debug',
      wait      => '5s:30s',
      max_stale => '1s'
    }
}

Watch files

To declare a file that you wish to populate from Consul key-values, you use the watch define. This requires a source .ctmpl file and the file on-disk that you want to update.

consul_template::watch { 'common':
    template      => 'data/common.json.ctmpl.erb',
    template_vars => {
        'var1' => 'foo',
        'var2' => 'bar',
    },
    config_hash   => {
      destination => '/tmp/common.json',
      command     => 'true',
    },
}

##Limitations

Depends on the JSON gem, or a modern ruby.

##Development See the contributing guide

Open an issue or fork and open a Pull Request