4.5.1 Installing a Linux DNS server on VMware 15.1
There are two environments covered in this chapter, Red Hat CentOS 8.0 Streaming and Red Hat Linux RHEL 8.1
4.5.1.1 Red Hat Linux RHEL 8.1
The base Red Hat RHEL 8.0 screenshots for this section can be found on pages 11 to 45 of the document, IBMCloudPrivateP8ContainerCPITInstallationonRedHatEnterpriseLinux8.0.docx on the link:
https://doi.org/10.13140/RG.2.2.27358.18246
4.5.1.2 Installing a Linux DNS Server on VMware 15.1
This section covers the download and installation of the Linux operating system RHEL 8.1. The download of the RHEL 8.1 iso image file for installation of the system can be started by browsing the URL link as follows:
https://developers.redhat.com/products/rhel/download/
Scroll down to see the earliest (as of January 2022) developer release RHEL 8.1 .iso file, size 7.31 GBytes this has a Release date of November 5th, 2019.
This requires a Red Hat login account which is freely available, to use the subscription manager to register the installed server. (Red Hat currently allows up to 16 Server subscriptions to be used for free.)
After clicking on the Download (7.31 GB) command button, the user is prompted with the login page before the download is started.
The rhel-8.1-x86_64-dvd.iso file (7.31 GBytes in size) is downloaded (select the download icon on the top right of the browser to see the progress of the download). The downloaded image file can then be saved to a folder accessible to the VMware host server for the installation process.
Scroll down to see a large range of links to further installation and developer notes and install products available from Red Hat. After downloading the RHEL 8.1 ISO file, select the VMware menu item, File | New Virtual Machine and in the first window select the second option Custom.
Click Next. Then click Next to accept the latest compatible Workstation version (which is always displayed). Note the location of the downloaded RHEL 8.1 iso file, rhel-8.1-x86_64-dvd.iso and then select Browse… to the iso file using the VMware Installer disc image file (iso) option.
Click Next, then enter the Virtual machine administration user and the password (this password is also used to access the root account). Click Next, to enter the Virtual machine name (for example, MasterBoot) and the root folder default location of all the Virtual machine control and disk files (for example E:\VMS\MasterBootRHEL8):
Note: Identify the Disk, CPU, and Memory requirements required for each server in an OpenShift cluster.
We will supply 8 cores, 19.7 GBytes of memory, and 300 GBytes drive. The New Virtual Machine Wizard prompts next for the Number of processors and the number of cores per processor.
Note: These values need to be within the capacity of the VMware host server you are using!
Enter the processor values required by OpenShift and click Next and click Next. Enter the memory requirements (we can use 20168 Mbytes, 19.7 GBytes) required by OpenShift and click Next.
Select the network card required using the VMware Network Address Translation (NAT) option. Select the NAT network address translation radio button option and click Next.
Select the SCSI I/O Controller type (the default LSI Logic was used (recommended) and then click Next. The SCSI disk type is then selected from the options available (options are, IDE, SCSI, SATA, and NVMe disk types) then click Next.
Select the Create a new virtual disk option. Click Next. The maximum disk size (GB) entry box is set with 300 GBytes, with the Split virtual disk into multiple files, radio button option.
The base file of MasterBoot.vmdk, 300-GByte disk is used to name the split disk system. This is presented for confirmation; the default is selected and then click Next. The summary window is then displayed for confirmation, as illustrated in Figure 4.9:
Figure 4.9: View and verify the hardware parameters to be installed and then click Finish
Click Finish to begin the installation. The User Creation option is displayed during the installation process. The install status shows each package being installed as shown in Figure 4.10:
Figure 4.10: During installation the Advanced button can be selected to add a wheel group
The Advanced option can be selected to add additional groups, such as the wheel group option to add wasdm user to the sudoers file.
The System restarts after installation on the VMware host (on the system used, this installation took around 15 minutes). Click Done (required twice if a short non-compliant password is used).
Note: After the reboot, select Not listed to log in as the root user (password FileNet on the system used).
Login as wasadm and then review the Getting Started videos which will be displayed on the first login.