Setting setenforce to 0 effectively sets SELinux to permissive, which effectively disables SELinux until the next reboot. Next, disable Selinux, as this is required to allow containers to access the host filesystem, which is needed by pod networks and other services. Next, ping your worker-node-1 and worker-node-2 to check if your updated host file is working correctly using the ping command. On your CentOS 8 Master-Node, set the system hostname and update DNS in your /etc/hosts file. Step 1: Prepare Hostname, Firewall, and SELinux The following institutions will be performed on CentOS 8 Master-Node. As mentioned, we will be using Docker-CE. Our 3-node Kubernetes Cluster will look something like this: Kubernetes Cluster Diagram Installation of Kubernetes Cluster on Master-Nodeįor Kubernetes to work, you will need a containerization engine. Master Node – This machine generally acts as the control plane and runs the cluster database and the API server (which the kubectl CLI communicates with). At the end of this installation, our logical architecture will look something like this. ![]() Our installation is designed to have the Master-Node controlling the Worker Nodes.
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