Check my earlier postings.: –
OpenShift Deploying on any platform Using a UPI method – https://kdinesh.in/openshift/
OpenShift Deploying on vSphere Using Ansible – https://kdinesh.in/ocp4-14/
OpenShift Deployment on OpenStack Cloud using a Heat stack: – https://kdinesh.in/ocp_openstack/
Prerequisites Deploy on vSphere using an OVA: –
Internet Access
DHCP Server – One dedicated Network for deploying OpenShift Cluster.
Three Static IPs – Two IPs for OCP Cluster and one IP for OVA deployment.
DNS Records –
Create DNS records for API VIP and Ingress VIP DNS A/AAAA and PTR Records with Cluster name
api.<cluster_name>.<base_domain>. # api.ocp4.dineshk.in
*.apps.<cluster_name>.<base_domain>. # *. apps.ocp4.dineshk.in
vSphere account privileges
One Public SSH Key
Pull Secret – You can download it using the following link – https://console.redhat.com/openshift/install/pull-secret
resources – CPU, Memory, Storage.
Please refer to the official doc for more details – https://docs.openshift.com/container-platform/4.14/installing/installing_vsphere/installing-vsphere-installer-provisioned-network-customizations.html
Deploying OCP Cluster: –
Download the OVA file using the below link: –
https://github.com/Dineshk1205/ocpova/releases/tag/ocp
OVA default root user password – Ocp@2024
OVA is Based on the Photon OS 5 . It’s a Lightweight OS. Ova will provision the OCP Cluster.
OVA deployment required one static IP with internet access.
Login to vSphere
Right-click on Host or Cluster. Choose the Deploy OVF Template option.
Click on Upload Files and Select downloaded OVA file. Next.
Select a name and folder > next.
Select a Compute resource > next.
Next.
Select Storage (OVA VM storage).
Select Network.
In the Customize Template Section. Cluster Deployment required inputs required.
Options | Remarks |
Master Node Disk Size | Min 100GB; otherwise, cluster deployment will fail. |
Master Node Count | Min nodes 3 Maximum Nodes 5 |
Master Node Memory | Min required 16 GB for master/control nodes. |
Master Nodes vCPUs | Min 4, recommended 8. |
Enter OpenShift Master Nodes values. Recommended 8 vCPUs for master nodes.
Enter Worker/Compute node values. Recommended min 4 vCpus for worker nodes.
Options | Remarks |
Worker Node vCPUs | Recommended 4 vCPUs |
Worker Node Memory | Min 8GB required |
Worker Node Disk Size | Min 100Gb required. Otherwise, Cluster Deploy will Fail. |
OpenShift Worker/Compute Node Count | Based on your requirements, you can enter value. |
Enter vCenter values. Enter vCenter Username, Password, Folder, Datacenter Name, Datastore Name, vCenter FQDN, DHCP Network (DHCP Network, OpenShift Deployment required DHCP Network).
Options | Remarks |
vCenter Username | vCenter User name: The user has required roles and permission for deploying the OCP Cluster. |
vCenter Password | vCenter User Password |
vCenter Folder | OCP Cluster deployed on this folder |
vCenter Network | OCP Cluster nodes used must be DHCP Network. |
vCenter Cluster | OCP Cluster VM deployment Cluster |
vCenter Datacenter | OCP Cluster VM Deployment Datacenter |
vCenter Datastore | OCP Cluster VMs will be used. |
vCenter FQDN | Enter FQDN name. Don’t Specify IP. |
Options | Remarks |
OpenShift Cluster Name | Cluster name, API and Ingress DNS records created with this cluster name |
OpenShift API IP | API IP |
Base Domain | Domain name |
OpenShift Version | Select OCP Version |
Enter Cluster Name, API VIP, Ingress IP, and Base Domain and select OpenShift Version.
Options | Remarks |
OpenShift CNI Plugin | Select OVA Kubernetes or OpenShift SDN |
OpenShift Service Network | Internal Network |
OpenShift Machine Network | Assigned to Cluster Nodes |
OpenShift Cluster Network | Internal Pod Network |
Select OpenShift Cluster CNI. You can refer to the Office doc to understand the Service, Machine, and Cluster Network.
Options | Remarks |
SSH Public Key | SSH Key injected to all cluster nodes. You can access nodes using the core user. |
Pull Secret | You can download it from the Redhat Portal, convert it to base 64, and paste the secret key. |
Paste SSH Public Key and Base 64 format PULL Secret Key.
Options | Remarks |
Domain Name | OVA VM Domain name |
Gateway | Gateway IP configured to OVA deployment VM |
Hostname | You can give any name. |
DNS | DNS Configure to OVA VM |
IP Address | The IP address for the OVA VM |
Netmask | Enter netmask |
Enter OVA deployment VM Values.
Review the details and click on FINISH.
OVA Deployment Started. You can check the status in the Recent Task Bar.
Once Deployment is completed, start the VM.
Wait for 1 minute after powering on the VM. Access VM using Putty or any SSH tool—log into VM to check the deployment status and logs.
OVA Default – Username – root
Password – Ocp@2024
You can use the below command to monitor deployment and logs.
$ journalctl -f -u rc-local.service
You can relax. Deployment takes Approximately 45 to 50 minutes.
In the vCenter OpenShift Folder Cluster, VMs are created.
You export kubeconfig to check the node status
Directory – /root/ocp
Export kubeconfig
$ export KUBECONFIG=/root/ocp/auth/kubeconfig
