Setup Local OpenShift Origin (OKD) Cluster on CentOS 7

Step 1: Update CentOS 7 system

#sudo yum -y update

Step 2: Install and Configure Docker

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


Add your standard user account to docker group.

#sudo usermod -aG docker $USER
#newgrp docker


After installing Docker, configure the Docker daemon with an insecure registry parameter of 172.30.0.0/16

#sudo mkdir /etc/docker /etc/containers

#sudo tee /etc/containers/registries.conf<<EOF
[registries.insecure]
registries = ['172.30.0.0/16']
EOF

#sudo tee /etc/docker/daemon.json<<EOF
{
   "insecure-registries": [
     "172.30.0.0/16"
   ]
}
EOF

We need to reload systemd and restart the Docker daemon after editing the config.

#sudo systemctl daemon-reload
#sudo systemctl restart docker

Enable Docker to start at boot.

#sudo systemctl enable docker

Then enable IP forwarding on your system.

#echo "net.ipv4.ip_forward = 1" | sudo tee -a /etc/sysctl.conf
#sudo sysctl -p


Step 3: Download the Linux oc binary

At this step, we can download the Linux oc binary from openshift-origin-client-tools-VERSION-linux-64bit.tar.gz and place it in your path.

#wget https://github.com/openshift/origin/releases/download/v3.11.0/openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit.tar.gz
#tar xvf openshift-origin-client-tools*.tar.gz
#cd openshift-origin-client*/
#sudo mv  oc kubectl  /usr/local/bin/

Step 4: Verify the installation of OpenShift client utility.

#oc version

Step 5: Start OpenShift Origin (OKD) Local Cluster

$ oc cluster up

Note: It shows as localhost IP address of the machine. if you want to assign the public IP address then follow the below steps.


Remove Openshift Console redirects to 127.0.0.1

1. oc cluster down
2. oc config get-clusters
3. oc config delete-cluster 127-0-0-1:8443
4. rm -rf /root/openshift.local.clusterup
5. ls -a
6. To change your hostname and IP of the machine
 #oc cluster up --public-hostname=mylabserver.com  --routing-suffix=54.153.10.22.nip.io
7. go to http://<IP or hostname>:8443/console