Techno Tim
db85fa960c
* fix(metallb): guard cilium_bgp variable before evaluating - The 'Deploy metallb manifest' and 'Deploy metallb pool' conditionals evaluate 'not cilium_bgp' directly, which raises an undefined-variable error when the k3s_server role runs without cilium_bgp in scope and no Cilium variables are set - Guard with 'cilium_bgp is not defined' so the condition resolves cleanly when Cilium BGP is not configured - Fixes #644 * docs(apiserver): clarify apiserver_endpoint must be a free routable IP - Note that apiserver_endpoint must be an unassigned, routable IP on the network and that it is exposed by kube-vip / MetalLB - Fixes #678 * fix(molecule): wait for MetalLB resources before asserting images - The MetalLB image-tag assertion crashed with 'list object has no element 0' when the controller Deployment was not yet observable at verify time - Retry the MetalLB controller/speaker lookup until the resources appear - Fail with a clear message if MetalLB is genuinely absent
Test suites for k3s-ansible
This folder contains the molecule-based test setup for this playbook.
Scenarios
We have these scenarios:
- default: A 3 control + 2 worker node cluster based very closely on the sample inventory.
- ipv6: A cluster that is externally accessible via IPv6 (more information) To save a bit of test time, this cluster is not highly available, it consists of only one control and one worker node.
- single_node: Very similar to the default scenario, but uses only a single node for all cluster functionality.
- calico: The same as single node, but uses calico cni instead of flannel.
- cilium: The same as single node, but uses cilium cni instead of flannel.
- kube-vip The same as single node, but uses kube-vip as service loadbalancer instead of MetalLB
How to execute
To test on your local machine, follow these steps:
System requirements
Make sure that the following software packages are available on your system:
Set up VirtualBox networking on Linux and macOS
You can safely skip this if you are working on Windows.
Furthermore, the test cluster uses the 192.168.30.0/24 subnet which is not set up by VirtualBox automatically.
To set the subnet up for use with VirtualBox, please make sure that /etc/vbox/networks.conf exists and that it contains this line:
* 192.168.30.0/24
* fdad:bad:ba55::/64
Install Python dependencies
You will get Molecule, Ansible and a few extra dependencies via pip. Usually, it is advisable to work in a virtual environment for this:
cd /path/to/k3s-ansible
# Create a virtualenv at ".env". You only need to do this once.
python3 -m venv .env
# Activate the virtualenv for your current shell session.
# If you start a new session, you will have to repeat this.
source .env/bin/activate
# Install the required packages into the virtualenv.
# These remain installed across shell sessions.
python3 -m pip install -r requirements.txt
Run molecule
With the virtual environment from the previous step active in your shell session, you can now use molecule to test the playbook. Interesting commands are:
molecule create: Create virtual machines for the test cluster nodes.molecule destroy: Delete the virtual machines for the test cluster nodes.molecule converge: Run thesiteplaybook on the nodes of the test cluster.molecule side_effect: Run theresetplaybook on the nodes of the test cluster.molecule verify: Verify that the cluster works correctly.molecule test: The "all-in-one" sequence of steps that is executed in CI. This includes thecreate,converge,verify,side_effectanddestroysteps. Seemolecule.ymlfor more details.