This repository is used to create OKD 3.11 Cluster with 9 simple steps on Bare VM's
- What are the pre-requisites ?
- What are the VM's provisioned ?
- How to deploy okd cluster ?
- How to access okd Console ?
- What are the addons provided ?
Note: We are not going to create any VM's during this process. User is expected to have VM's before proceeding with this repository
Below is the example configuration that we are going to refer through out this repository.
| Name | IP | OS | RAM | CPU |
|---|---|---|---|---|
| okd-master-node | 100.10.10.100 | CentOS7 | 16GB | 4 |
| okd-worker-node-1 | 100.10.10.101 | CentOS7 | 16GB | 4 |
| okd-worker-node-2 | 100.10.10.102 | CentOS7 | 16GB | 4 |
| okd-worker-node-3 | 100.10.10.103 | CentOS7 | 16GB | 4 |
| okd-infra-node-1 | 100.10.10.104 | CentOS7 | 16GB | 4 |
Update the system and host names for all nodes
100.10.10.100 (okd-master-node)100.10.10.101 (okd-worker-node-1)100.10.10.102 (okd-worker-node-2)100.10.10.103 (okd-worker-node-3)100.10.10.104 (okd-infra-node-1)
Unix Command!!!
$ yum update -y
$ nano /etc/hostname (OR) $ nmtui
Enable SELINUX=enforcing on all master/worker/infra nodes
100.10.10.100 (okd-master-node)100.10.10.101 (okd-worker-node-1)100.10.10.102 (okd-worker-node-2)100.10.10.103 (okd-worker-node-3)100.10.10.104 (okd-infra-node-1)
Unix Command!!!
$ nano /etc/selinux/config
We can verify the status by running the below command. The correct status will not reflect once we changed until we reboot the machines
$ sestatus
Reboot all master/worker/infra nodes
100.10.10.100 (okd-master-node)100.10.10.101 (okd-worker-node-1)100.10.10.102 (okd-worker-node-2)100.10.10.103 (okd-worker-node-3)100.10.10.104 (okd-infra-node-1)
Unix Command!!!
$ reboot
Checkout the code (git clone https://github.com/SubhakarKotta/okd-installation-centos.git)
Configure okd-installation-centos/provisioning/settings.sh file
Copy "okd-installation-centos" folder to all master/worker nodes
100.10.10.100 (okd-master-node)100.10.10.101 (okd-worker-node-1)100.10.10.102 (okd-worker-node-2)100.10.10.103 (okd-worker-node-3)100.10.10.104 (okd-infra-node-1)
Example copy to root folder and execution permissions can be applied by executing the below command.
Unix Command!!!
$ chmod +x -R okd-installation-centos
Execute the below script on all master/worker/infra nodes
100.10.10.100 (okd-master-node)100.10.10.101 (okd-worker-node-1)100.10.10.102 (okd-worker-node-2)100.10.10.103 (okd-worker-node-3)100.10.10.104 (okd-infra-node-1)
Unix Command!!!
$ okd-installation-centos/provisioning/install_prerequisites.sh
Enable SSH to communicate all the other "worker/infra nodes" from "master" with out "password". All the below commands needs to be executed on "master" node only
100.10.10.101 (okd-master-node)
Unix Command!!!
$ ssh-keygen -t rsa
okd-master-node
$ cat ~/.ssh/id_rsa.pub | ssh root@100.10.10.100 "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys && chmod 600 ~/.ssh/authorized_keys"
okd-worker-node-1
$ cat ~/.ssh/id_rsa.pub | ssh root@100.10.10.101 "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys && chmod 600 ~/.ssh/authorized_keys"
okd-worker-node-2
$ cat ~/.ssh/id_rsa.pub | ssh root@100.10.10.102 "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys && chmod 600 ~/.ssh/authorized_keys"
okd-worker-node-3
$ cat ~/.ssh/id_rsa.pub | ssh root@100.10.10.103 "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys && chmod 600 ~/.ssh/authorized_keys"
okd-infra-node-4
$ cat ~/.ssh/id_rsa.pub | ssh root@100.10.10.104 "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys && chmod 600 ~/.ssh/authorized_keys"
Execute the below script only on master node
100.10.10.101 (okd-master-node)
Unix Command!!!
$ okd-installation-centos/provisioning/install_master.sh
Verify okd installation is success by executing below two commands to see all the nodes and pods.
Unix Command!!!
$ oc login -u admin -p admin https://console.okd.nip.io:8443
$ oc get projects
The okd Console can be accessed via the below URL from your local machine
https://console.okd.nip.io:8443
helm