Containerd Kubernetes tutorial for building a k8s cluster.

Building a Kubernetes cluster is a common task, which can be achieved by using Containerd as the container runtime. An original tutorial that complies with Baidu SEO standards is provided below, demonstrating in detail how to use Containerd and Kubernetes to build a Kubernetes cluster.

Step 1: Install Docker and Containerd

First, we need to install Docker and Containerd on the server. These two tools will assume the management and running tasks of the container. You can complete the installation by following these steps:

1. Update the package manager on the server:

$ sudo apt update

1. Install Docker:

$ sudo apt install docker.io

1. Install Containerd:

$ sudo apt install containerd

Step 2: Configure Containerd

Once the installation is complete, we need to configure Containerd to integrate with Kubernetes. Please follow the steps below to configure:

1. Create and edit the Containerd configuration file:

$ sudo nano /etc/containerd/config.toml

1. In the configuration file, find the following line and uncomment it (remove the # symbol before the line):

[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc]
...
[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
SystemdCgroup = true

1. Save and close the file.
2. Restart Containerd to apply configuration changes:

$ sudo systemctl restart containerd

Step 3: Install the Kubernetes control plane

Now, we will install the control plane components of Kubernetes. These components will manage the state and configuration of the entire cluster.

1. Install Kubeadm, Kubelet and Kubectl using the package manager:

$ sudo apt install kubeadm kubelet kubectl

Step 4: Initialize Master node

The Master node is the control center of the Kubernetes cluster. We will use Kubeadm to initialize the Master node.

1. Run the following command on the Master node:

$ sudo kubeadm init --pod-network-cidr=192.168.0.0/16

1. After the initialization is completed, copy the kubeconfig command in the output to the user directory:

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

Step 5: Deploy network plug-in

Kubernetes clusters require network plug-ins to implement communication between containers. Here we use Flannel as a network plug-in.

1. Run the following command on the Master node to deploy Flannel:

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

Step 6: Join Worker node

Now, we need to add the Worker node to the Kubernetes cluster. Execute the following command on the Worker node:

1. Run the Kubeadm join command on the Worker node. This command

Commands are provided in the output in step 4:

$ sudo kubeadm join <Master node IP>:<Master node port> --token <Token value> --discovery-token-ca-cert-hash <Certificate hash value>

1. Return to the Master node and run the following command on the Master node to view the nodes in the cluster:

$ kubectl get nodes

If everything goes well, you should be able to see the list of Master nodes and joined Worker nodes.

Congratulations! You have successfully set up a Kubernetes cluster based on Containerd and Kubernetes. Now you can start deploying and managing containerized applications on your cluster.

Please note that this tutorial provides basic building guidelines and can be customized and expanded according to actual needs. If you need more in-depth understanding and configuration, please refer to the official Kubernetes documentation or other authoritative resources.

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