Installation on vSphere

• Installation on vSphere
  • Prerequisites
  • Preparation
  • Install OpenShift
  • OpenShift Architecture

Prerequisites

Prepare below before deploy OpenShift Cluster

• Recommended vSphere version
  • VM hardware version 15 or later
  • vSphere version 6.7U3
• Requires to access to port 443 to vCenter and all ESXi hosts
  • vSphere infrastructure requirements
  • vCenter requirements
• Global Administrative privileges account of vCenter
  • Required vCenter account privileges
• 856 GB space on Storage
• 2 IP Addresses for API and Ingress
• DNS records for two static IP addresses (API and Ingress IP Address)
• DHCP Server
• vCenter root CA to trust installation host with vCenter before deploy OpenShift
• Pull secret from https://cloud.redhat.com
  • Evaluation subscription can be found at try.openshift.com
• Internet Access during installation process
• Generating a Key Pair for cluster node with SSH Access
• Download the OpenShift Command-line tools and Openshift installer

Default CPU , Memory and Disk sizing for Openshift node after finish deployment**

Preparation

prepare the bastion node to install OpenShift Container Platform. This includes installing the AWS Command Line Interface , the OpenShift Installer , and the OpenShift CLI

• Connect to your administration host

  ssh <user name>@bastion.<Domain Name>
  

• Switch to root using the sudo command

  sudo -i

• Switch to root using the sudo command

  sudo -i
  

• Install OpenShift CLI Tools

  • Download OpenShift Installer and OpenShift Client (oc) from here

  • Install OpenShift Installer

    tar zxvf <OpenShift-Installer> -C /usr/bin
    chmod +x /usr/bin/openshift-install
    

  • Install OpenShift Client (oc)

    tar zxvf <OpenShift Client> -C /usr/bin
    chmod +x /usr/bin/oc
    

  • Optional: setup bash completion

    openshift-install completion bash >/etc/bash_completion.d/openshift-install
    oc completion bash >/etc/bash_completion.d/openshift
    

    Install OpenShift

• Get pull secret from cloud.redhat.com

  • Login to cloud.redhat.com

    

  • Navigate to OpenShift Menu->Cluster->Select tab Datacenter->vSphere ->Installer-provisioned-infrastructure

    

  • Copy pull secret and you can also download CLI from here.

    

  • Save your pull secret for use later

• Create an SSH keypair to be used for your Openshift environement

   ssh-keygen -f ~/.ssh/cluster-{Name}-key -N ''
  

• Run OpenShift Installer for interactive installation

  openshift-install create cluster --dir <installation_directory>
  

• Input your cluster configuration

    ? SSH Public Key /home/<user_name>/.ssh/cluster-{Name}-key.pub
    ? Platform vsphere
    ? vCenter <vCenter's IP address>
    ? Username <Administrator Privileges account of vCenter>
    ? Password <Password of Administrator account>
    INFO Connecting to vCenter <vCenter's IP address>
    ? Datacenter <Data Center name for deploy OpenShift cluster>
    ? Default Datastore <Data Store for deploy OpenShift Cluster>
    ? Network <Network vlan id that same vlan with API and Ingress IP address>
    ? Virtual IP Address for API <API static IP Address>
    ? Virtual IP Address for Ingress <Ingress static IP Address>
    ? Base Domain <FQDN for OpenShift Cluster>
    ? Cluster Name <your OpenShift Cluster Name>
    ? Pull Secret [? for help] 
    ***************************************************************************************************************************************************************
  

  Output

    INFO Creating infrastructure resources...
    INFO Waiting up to 20m0s for the Kubernetes API at https://api.cluster-e9eb.sandbox1409.opentlc.com:6443...
    INFO API v1.19.0+e49167a up
    INFO Waiting up to 30m0s for bootstrapping to complete...
    INFO Destroying the bootstrap resources...
    INFO Waiting up to 40m0s for the cluster at https://api.cluster-e9eb.sandbox1409.opentlc.com:6443 to initialize...
    INFO Waiting up to 10m0s for the openshift-console route to be created...
    INFO Install complete!
    INFO To access the cluster as the system:admin user when using 'oc', run 'export KUBECONFIG=/home/wkulhane-redhat.com/cluster-e9eb/auth/kubeconfig'
    INFO Access the OpenShift web-console here: https://console-openshift-console.apps.cluster-e9eb.sandbox1409.opentlc.com
    INFO Login to the console with user: kubeadmin, password: **********
    INFO Time elapsed: 32m6s
  

• set up the OpenShift CLI

  export KUBECONFIG=$HOME/cluster-{NAME}/auth/kubeconfig
  echo "export KUBECONFIG=$HOME/cluster-{NAME}/auth/kubeconfig" >>$HOME/.bashrc
  

• Validate your clusters

  • Check that you are cluster administrator

    oc whoami
    

    Output

    system:admin
    

  • Validate that all nodes have a status of Ready

    oc get nodes
    

    Output

    NAME                    STATUS    ROLES    AGE   VERSION
    vm-testvm-master-0       Ready    master   24m   v1.19.0+e49167a
    vm-testvm-worker-4dtqf   Ready    worker   17m   v1.19.0+e49167a
    vm-testvm-worker-lr8ll   Ready    worker   19m   v1.19.0+e49167a
    vm-testvm-master-1       Ready    master   24m   v1.19.0+e49167a
    vm-testvm-worker-t2j5v   Ready    worker   19m   v1.19.0+e49167a
    vm-testvm-master-2       Ready    master   24m   v1.19.0+e49167a
    

OpenShift Architecture