Easy to configure the Openshift Cluster OKD (3.11) on CentOS
In my demo environment, I am going to build a openshift cluster -- one master node (master/Infra/computer node) and two computer nodes. Any comments are welcome! System requirements to configure the environment: Master node: 4 vcpu/32GB mem Compuer node: 2 vcpu/ 16GB mem The following steps (1-4) will be done on all nodes as root 1> Create a user on all NODES (any user account you prefer) useradd origin passwd origin 2> Grant the sudo access without password for this user on all NODES echo -e 'Defaults:origin !requiretty\norigin ALL = (root) NOPASSWD:ALL' | tee /etc/sudoers.d/openshift chmod 440 /etc/sudoers.d/openshift 3> Open firewall on all NODES firewall-cmd --add-service=ssh --permanent firewall-cmd --reload 4> Install Openshift, EPEL, Docker, Git abd Py on all NODES yum -y install centos-release-openshift-origin311 epel-release docker git pyOpenSSL systemctl start docker systemctl enable docker Please make a note: The follow