Getting Started with Kubernetes and OpenShift

Modules for interacting with the Kubernetes (K8s) and OpenShift API are under development, and can be used in preview mode. To use them, review the requirements, and then follow the installation and use instructions.

Requirements

To use the modules, you’ll need the following:

• Run Ansible from source. For assistance, view running from source
• OpenShift Rest Client installed on the host that will execute the modules

Installation and use

The individual modules, as of this writing, are not part of the Ansible repository, but they can be accessed by installing the role, ansible.kubernetes-modules, and including it in a playbook.

To install, run the following:

$ ansible-galaxy install ansible.kubernetes-modules

Next, include it in a playbook, as follows:

---
- hosts: localhost
  remote_user: root
  roles:
    - role: ansible.kubernetes-modules
    - role: hello-world

Because the role is referenced, hello-world is able to access the modules, and use them to deploy an application.

The modules are found in the library folder of the role. Each includes full documentation for parameters and the returned data structure. However, not all modules include examples, only those where testing data has been created.

Authenticating with the API

By default the OpenShift Rest Client will look for ~/.kube/config, and if found, connect using the active context. You can override the location of the file using thekubeconfig parameter, and the context, using the context parameter.

Basic authentication is also supported using the username and password options. You can override the URL using the host parameter. Certificate authentication works through the ssl_ca_cert, cert_file, and key_file parameters, and for token authentication, use the api_key parameter.

To disable SSL certificate verification, set verify_ssl to false.

Filing issues

If you find a bug or have a suggestion regarding individual modules or the role, please file issues at OpenShift Rest Client issues.

There is also a utility module, k8s_common.py, that is part of the Ansible repo. If you find a bug or have suggestions regarding it, please file issues at Ansible issues.