hashicorp_nomad

This repository is only a mirror. Development and testing is done on a private gitea server.

This role install and configure nomad on debian-based distributions.

Requirements

None.

Role Variables

Available variables are listed below, along with default values. A sample file for the default values is available in default/hashicorp_nomad.yml.sample in case you need it for any group_vars or host_vars configuration.

hashicorp_nomad_install: true # by default, set to true

This variable defines if the nomad package is to be installed or not before configuring. If you install nomad using another task, you can set this to false.

hashicorp_nomad_auto_update: false # by default, set to false

This variable allows you to choose to automatically update nomad if a newer version is available. Updating nomad is usually pretty safe if done on a regular basis, but for better control over the upgrade process, see hashicorp_nomad_version.

hashicorp_nomad_cni_plugins_install: true # by default, set to true

This variable defines whether or not to install the CNI plugins on the host. Defaults to true.

hashicorp_nomad_start_service: true

This variable defines if the nomad service should be started once it has been configured. This is usefull in case you're using this role to build golden images, in which case you might want to only enable the service, to have it start on the next boot (when the image is launched)

hashicorp_nomad_cni_plugins_version: latest # by default, set to latest

This variable defines the version of the CNI plugins to install.

hashicorp_nomad_cni_plugins_install_path: /opt/cni/bin

This variable defines where to install the CNI plugins. Note that it should be referenced in the nomad configuration.

hashicorp_nomad_version: latest # by default, set to latest

This variable specifies the version of nomad to install when hashicorp_nomad_install is set to true. The version to specify is the version of the package on the hashicorp repository (1.5.1-1 for example). This can be found by running apt-cache madison consul on a machine with the repository installed.

hashicorp_nomad_deploy_method: host # by default, set to host

This variable defines the method of deployment of nomad. The host method installs the binary directly on the host, and runs nomad as a systemd service. The docker method install nomad as a docker container.

Currently, only the host method is available, the docker method will be added later.

hashicorp_nomad_env_variables: # by default, set to empty
  env_var: value

This value is a list of key/value that will populate the nomad.env file. You do not have to capitalize the KEYS, as it will be done automatically.

hashicorp_nomad_extra_files: false # by default, set to false

This variable defines whether or not there is extra configuration files to copy to the target. If there are, these extra files are expected to be jinja2 templates located all in the same directory, and will be copied to the specified directory on the target machine.

hashicorp_nomad_extra_files_src: /tmp/extra_files # by default, set to /tmp/extra_files

This variable defines the source directory (without the trailing /) for the extra files to be copied in case there are some.

hashicorp_nomad_extra_files_dst: /etc/nomad.d/extra_files # by default, set to /etc/nomad.d/extra_files

This variable defines the destination directory (without the trailing /) for the extra files to be copied.

hashicorp_nomad_configuration: {} # by default, set to a simple configuration

This variable sets all of the configuration parameters for nomad. For more information on all of them, please check the documentation. This variable is parsed and converted to json format to create the config file, so each key and value should be set according to the documentation. This method of passing configuration allows for compatibility with every configuration parameters that nomad has to offer. The defaults are simply here to deploy a simple, single-node nomad server without much configuration, and should NOT be used in production. You will want to edit this to deploy production-ready clusters.

Dependencies

ednz_cloud.manage_repositories to configure the hashicorp apt repository. ednz_cloud.manage_apt_packages to install nomad.

Example Playbook

# calling the role inside a playbook with either the default or group_vars/host_vars
- hosts: servers
  roles:
    - ednz_cloud.hashicorp_nomad

License

MIT / BSD

Author Information

This role was created by Bertrand Lanson in 2023.