Building a Kubernetes Cluster Using Docker with 100-Year Certificate Validity
Cluster Architecture
Provision three CentOS 7 instances with the following roles and specifications. The control plane node requires at least 2 vCPUs; otherwise, kubeadm initialization will fail.
Hostname
IP Address
Role
OS
Specs
ctrl-plane
192.168.10.10
Control Plane
CentOS 7
2 vCPU / 4 GiB
worker-1
192.168.10.11
Worker
CentOS 7
2 vCP ...
Posted on Fri, 08 May 2026 13:26:21 +0000 by dieselmachine