Kubernetes Installation SOP on CentOS Stream 10 (Step-by-Step Deployment Guide 2025)

🧭 Kubernetes Installation SOP on CentOS Stream 10

Step-by-step Kubernetes v1.31 deployment on CentOS Stream 10 with containerd, kubeadm, and worker node integration. Optimized for production setups.

📋 1. Pre-requisites

  • Minimum 2 CPUs and 2 GB RAM (4 GB recommended for control plane)
  • Root or sudo privileges
  • Stable internet connectivity
  • Unique hostnames and static IPs for all nodes

⚙️ 2. System Preparation (Run on All Nodes)

hostnamectl set-hostname k8s-master    # Example for master node
dnf update -y
swapoff -a
sed -i '/swap/d' /etc/fstab
modprobe overlay
modprobe br_netfilter

Create sysctl configuration:

cat <





📦 3. Install Container Runtime (containerd)


dnf install -y yum-utils device-mapper-persistent-data lvm2
dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
dnf install -y containerd.io




Configure containerd:


mkdir -p /etc/containerd
containerd config default | tee /etc/containerd/config.toml
sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml





Enable and start containerd:



systemctl enable --now containerd







🚀 4. Install Kubernetes Components


Add Kubernetes repository:


cat <


Install kubeadm, kubelet, and kubectl:


dnf install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
systemctl enable --now kubelet







🏗️ 5. Initialize Kubernetes Control Plane (Master Node)


kubeadm init --pod-network-cidr=10.244.0.0/16




Configure kubectl for the current user:


mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config







🌐 6. Install Pod Network Add-on


You can use either Flannel or Calico for the network overlay.



Option 1 — Flannel


kubectl apply -f https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml




Option 2 — Calico


kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml







🧩 7. Join Worker Nodes


Run the below command on each worker node (replace placeholders):


kubeadm join :6443 --token  \
    --discovery-token-ca-cert-hash sha256:







🧾 8. Verify Cluster Status


On the master node:


kubectl get nodes
kubectl get pods -A





✅ All nodes should show as “Ready” and system pods running successfully.






© 2025 • Kubernetes Deployment SOP — CentOS Stream 10 Edition Sidhesh D. 🧠

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