04_check_k8s_versions.yml - Usage Guide

Read-Only k3s kubeadm

Purpose

This playbook collects and reports version information for the Kubernetes stack running on a node (control-plane or worker): kubectl, kubeadm, kubelet, containerd, runc, and etcd.

Version detection lives in the shared task list tasks/k8s_versions.yml. 06_update_k8s_services.yml uses the same file to capture versions before and after an upgrade, so the two playbooks do not implement detection twice.

Requirements

  • hosts: all — kubeadm/kubelet/containerd/runc checks run on every node.
  • Steps that need kubectl (kubectl version, etcd image) run only on hosts where kubectl cluster-info succeeds (typically master/singlenode). If access fails, those steps are skipped and the other version data is still collected.

How to run 

ansible-playbook -i inventories/musteri_a/hosts.ini playbooks/04_check_k8s_versions.yml

# Limit to a host or group:
ansible-playbook -i inventories/musteri_a/hosts.ini playbooks/04_check_k8s_versions.yml --limit master

Sample output 

TASK [Ping connectivity test] **************************************************
ok: [203.0.113.10]

TASK [Kubeconfig / kubectl access check] ***************************************
ok: [203.0.113.10]

TASK [Version report] **********************************************************
ok: [203.0.113.10] => {
    "msg": [
        "kubectl: clientVersion: ... gitVersion: v1.34.10 ...",
        "kubeadm: v1.34.10",
        "kubelet: Kubernetes v1.34.10",
        "containerd: containerd github.com/containerd/containerd/v2 v2.2.0 ...",
        "runc: runc version 1.3.3 ...",
        "etcd image: registry.k8s.io/etcd:3.6.5-0"
    ]
}