Kubernetes Cluster Host Planning and Deployment Steps
This guide outlines host planning for a master and two worker nodes, specifies CentOS, Docker, and Kubernetes version requirements, and provides step‑by‑step deployment instructions—including image download, network initialization, Flannel setup, and verification of pod and node status—illustrated with diagrams and screenshots.
Host Planning
The master node is allocated 2 CPU cores and 8 GB RAM with hostname master.example.com and IP 192.168.0.20; two worker nodes (node1 and node2) each receive 2 CPU/4 GB RAM, hostnames node1.example.com, node2.example.com, and IPs 192.168.0.49 and 192.168.0.50 respectively.
Software Requirements
Operating system: CentOS Linux 7.3.1611 (Core). Docker version 1.13.1 (build 07f3374/1.13.1). Kubernetes version v1.13.1.
Deployment Steps
The architecture diagram is shown below.
All nodes execute a common script:
https://raw.githubusercontent.com/zeyangli/devops/master/allrun.sh. The master node downloads images, initializes the network, configures kubectl and the Flannel overlay network, and then validates the status of all pods and nodes. Screenshots illustrate each stage, including master configuration, node addition, and verification.
Adding Node Workers
Verification screenshots follow.
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