Create a Kubernetes Cluster using Ansible.
Use vanilla upstream Kubernetes distro k0s.
Similar to movd/k0s-ansible, but better (i think so ;) )
If latest is set for k0s_version, the role tries to install the latest release version.
Please use this with caution, as incompatibilities between releases may occur!
The binaries are installed below /usr/local/bin/k0s/${k0s_version} and later linked to /usr/bin.
This should make it possible to downgrade relatively safely.
The k0s archive is stored on the Ansible controller, unpacked and then the binaries are copied to the target system.
The cache directory can be defined via the environment variable CUSTOM_LOCAL_TMP_DIRECTORY.
By default it is ${HOME}/.cache/ansible/k0s.
If this type of installation is not desired, the download can take place directly on the target system.
However, this must be explicitly activated by setting k0s_direct_download to true.
Ansible Collections
ansible-galaxy collection install bodsch.core
ansible-galaxy collection install bodsch.scmor
ansible-galaxy collection install --requirements-file collections.ymlThis Ansible role can be used atomically.
If no changes are necessary, none will be made.
Avoid command calls.
Wherever possible, separate Ansible modules are used for this.
One role for all cases.
Tested on
- ArchLinux
- Debian based
- Debian 10 / 11
The example of a working implementation can be viewed at GitLab.
A suitable infrastructure based on KVM and Terraform can be created in the repository.
There are some tests in molecule that could be used.
For reasons that are not clear to me, the tests in a docker container are not very meaningful.
I have therefore extended the tests with the Vagrant driver.
There is a Makefile to start the tests:
make test -e TOX_SCENARIO=multi-workermake test -e TOX_SCENARIO=vagrant-multi-workerPlease read Contribution
The master Branch is my Working Horse includes the "latest, hot shit" and can be complete broken!
If you want to use something stable, please use a Tagged Version!
k0s_version: 1.25.2+k0s.0
k0s_release_download_url: https://github.com/k0sproject/k0s/releases
k0s_system_user: k0s
k0s_system_group: k0s
k0s_config_dir: /etc/k0s
k0s_data_dir: /var/lib/k0s
k0s_libexec_dir: /usr/libexec/k0s
k0s_direct_download: false
k0s_worker_on_controller: false
k0s_force: false
k0s_debug: false
k0s_verbose: false
k0s_cluster_nodes:
initial_controller: ""
controllers: []
workers: []
k0s_extra_arguments:
controller:
- --enable-metrics-scraper
k0s_config_overwrites: {}
k0s_token_expiry: "15m"
k0s_artifacts_dir: "{{ inventory_dir }}/artifacts"Extension of the automatically created k0s.yaml
The structure must correspond to the created configuration. An example file can be viewed here.
k0s_cluster_nodes:
initial_controller: controller-1.k0s.local
controllers: []
workers: []k0s_cluster_nodes:
initial_controller: controller-1.k0s.local
controllers: []
workers:
- worker-1.k0s.local
- worker-2.k0s.local
- worker-3.k0s.localk0s_cluster_nodes:
initial_controller: controller-1.k0s.local
controllers:
- controller-2.k0s.local
- controller-3.k0s.local
workers:
- worker-1.k0s.local
- worker-2.k0s.local
- worker-3.k0s.local
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