Dennis McCarthy dmccuk

The issue you're encountering is likely due to the use of the MBR (Master Boot Record) partitioning scheme. MBR has a partition size limitation of 2TB. If you have disks larger than 2TB and you want to use the entire space in a single partition, you should use the GPT (GUID Partition Table) partitioning scheme instead of MBR.

To use the full capacity of a 3TB (or larger) disk on RHEL6, you'd want to use the GPT format. Here's how you can create a GPT partition:

Backup any data: Before making any changes to the disk, ensure you've backed up any data on it.
Install gdisk: The gdisk utility is a version of fdisk for GPT. It might not be installed by default:

sudo yum install gdisk

Oracle Linux 8 VM Templating Guide in VMware

Reset Hostname

echo "localhost" > /etc/hostname

Clear Network Configuration

Delete specific network manager settings.

nmcli connection delete <connection_name>

Creating a VM Template on VMware vSphere 7

Prerequisites

ISO Images: Ensure you have the ISO images for RHEL9 and OEL9 downloaded.
vSphere Client: Have the vSphere Client open and connected to your vCenter or ESXi host.

1. Prepare the ISO Image

Upload the RHEL9 and OEL9 ISOs to a datastore accessible by the ESXi hosts.

2. Create a New Virtual Machine

Building VMs using Ansible and the VMware API can be a streamlined process, but it does come with some considerations. Here's a more detailed guide:

Ansible and VMware

You'll want to make use of the Ansible vmware_guest module, which can create, clone, or reconfigure VMware VMs through vCenter.

Approach:

Inventory:

Generated via ChatGPT:

Hopefully this is what you need...

Python version:

To use this script, you'll need to replace your_company_name with the name of the company you're searching for, and your_github_api_token with a valid GitHub API token that has the necessary permissions to access user data. You can run the script from the command line or in a Python development environment, and it will print a list of usernames associated with the specified company on GitHub.

To use this script with the company_name argument, you can run the command like this:

python github_users.py -c teslamotors

Project Name

The project [insert project name] is a [insert brief description of what the project does]. The project is [insert why it's useful or entertaining].

Prerequisites

Before using the project, please ensure that your system meets the following requirements:

Operating System: [insert supported OS]
Software: [insert any software or dependencies required]
Additional Information: [insert any other important information required to run the project]

Quick Start

How to get a list of failed or unreachable hosts

This is in response to this stackoverflow question The solution was posted by Vladimir Botka.

YouTube walkthough here

When Ansible runs, it's great for setting up and configuring servers as per your playbooks and roles. But have you ever needed to collect a list of failed hosts where Ansible wasn't able to connect to them? In this demo I'm going to show you how to collect a list of failed and unreachable hosts.

My setup:

I'm simply using a list of servers that don't exist, along with one remote server that I can get to.

Get facts from Windows servers

In this vide I want to show you, as aLinux admin, how to get facts from a windows wserver.

To set the scene, you're a Linux admin who works with Ansible. You already collect facts, including custom facts from Linux servers, but you've been asked to extent this to a small number of Windows servers. Apart from the usual facts collected by the setup module, we also need to know the versions of installed software so we can get a picture of our estate. You don't know how to write powershell but you know it can;t be that hard.

This is what I'm going to show you today:

I already have Ansible able to manage a windows server. IF you don't, check out my other video on gtting that setup: https://youtu.be/aPN18jLRkJI
I'm goint to show you how to collect facts from a windows server using the setup module.
Next I'll add a custom facts to collect all installed applications and their versions.

Meetup 18

Welcome to the meetup. This page is to help you take part in the Ansible-lockdown talk. Request access to one of the Ansible control nodes and run ansible-lockdown against a Rocky Linux 8 server. He're the setup:

The ubuntu Ansible control Node has all the requisite software installed already.

These were the updates made for this demo:

Making sure port 80 was allowed and not removed - This didn't work yet...

	---
	- name: Manage iptables on RHEL6 or OEL6
	hosts: your_target_hosts # You need to replace this with your actual target host group or host.
	become: true
	gather_facts: true # This is required to collect facts about the target host.

	tasks:
	- name: Check if the system is RHEL6 or OEL6
	assert:
	that: