: detected "cgroupfs" as the Docker cgroup driver. If you fail to create this file, you’ll get the following warning when running kubeadm init (mentioned later). This can be found in the Kubernetes document. Once the Docker installation is finished, don’t forget to create the Docker daemon configuration file, /etc/docker/daemon.json. I strongly recommend looking at the primary resources. The detailed procedure is described in the original Docker documentation, so I won’t even try and translate it here (it won’t go well). The basic process follows that of the originators kubernetes.io and Docker from the sites below: The cluster building tool will be kubeadm, the Pod network add on will be flannel, and the CRI will be Docker. I will build a Kubernetes control plane node and a worker node. You deploy the pod using a blow sample nginx file.Setting up Kubernetes High Availability Cluster – Building and testing a multiple masters Part IIįollowing on from Part 1, in this part I’m going to build a Kubernetes HA cluster. Next, we can deploy nginx and expose the nginx service using the metallb load balancer. We can deploy a sample nginx pod, and we can expose pod service using metallb Load BalancerĪfter Metallb pod deployment, create and deploy the metallb config map (Update IP address range based on your infra). Run the below command (If you want to customize any specification, you can edit yaml file before deploying)Ĭheck the flannel pod status. Once adding nodes to the cluster, you can check the node and pod status. Sudo chown $(id -u):$(id -g) $HOME/.kube/configįor adding the remaining master 2 and 3 to the Kubernetes cluster, you can copy the above (fig -1.0) red color highlighted command and paste it into master two and master three nodes.įor worker nodes worker one and worker 2 to the Kubernetes cluster, you can copy the above (fig -1.0) yellow highlighted command and paste it into worker nodes one and two. Sudo cp -i /etc/kubernetes/nf $HOME/.kube/config To access the Kubernetes cluster, run the below commands and check the node status You can see the screenshot above first master node Kubernetes cluster installation was completed successfully. And you use different cidr for pod network. Note: – replace the control plane endpoint with your kube api VIP. Run the below command on one of the master nodes details based on your infra).ĭeploying Kubernetes cluster using kubeadm You can download the keepalive and Haproxy installation bash script using the below links (Update Hostname, IP …etc. Install and configure Keepalive and Haproxy on Master nodesįor installing and configuring the Keepalive and Haproxy. I used keepalive and HA proxy load balancer to deploy the HA cluster.Ĭontainer Network Interface (CNI) Plugin – flannelĭeploy 5 VMs on vSphere using Redhat 8.6 ISO.Ĭonfigure DNS Entries for all the nodes and VIP. Kubernetes High Availability (HA) Cluster Deploying on REDHAT: –
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