OVERVIEW:-

Configuration management is a process for maintaining computer systems, servers, and software in a desired, consistent state. It’s a way to make sure that a system performs as it’s expected to as changes are made over time. And to automate this process Configuration Management Tools are used such as Ansible and Terraform.

Description:

RHCE: A Red Hat® Certified Engineer (RHCE®) is a Red Hat Certified System Administrator (RHCSA) who is ready to automate Red Hat® Enterprise Linux® tasks, integrate Red Hat emerging technologies, and apply automation for efficiency and innovation using Ansible.

Terraform: HashiCorp Terraform is an infrastructure as code tool that lets you define both cloud and on-prem resources in human-readable configuration files that you can version, reuse, and share. You can then use a consistent workflow to provision and manage all of your infrastructure throughout its lifecycle.

We will provide LAB for practice as well as Gradable Assisted practice on various topics.

Exam Included:
EX294

Prerequisite:

Must be RHCSA Certified or have equivalent Linux knowledge.

RHCE and Terraform

Understand core components of Ansible
  • Inventories
  • Modules
  • Variables
  • Facts
  • Plays
  • Playbooks
  • Configuration files
  • Get information of specific Ansible modules and Commands
Install and configure an Ansible control node
  • Install required packages
  • Create a static host inventory file
  • Create a configuration file
  • Create and use static inventories to define groups of hosts
  • Manage parallelism
Configure Ansible managed nodes
  • Create and distribute SSH keys to managed nodes
  • Configure privilege escalation on managed nodes
  • Validate a working configuration using ad hoc Ansible commands
Script administration tasks
  • Create simple shell scripts
  • Create simple shell scripts that run ad hoc Ansible commands
Create Ansible plays and playbooks
  • Know how to work with commonly used Ansible modules
  • Use variables to retrieve the results of running a command
  • Use conditionals to control play execution
  • Configure error handling
  • Create playbooks to configure systems to a specified state
Use Ansible modules for system administration tasks that work with:
  • Software packages and repositories
  • Services
  • Firewall rules
  • File systems
  • Storage devices
  • File content
  • Archiving
  • Scheduled tasks
  • Security
  • Users and groups
Work with roles
  • Create roles
  • Download roles from an Ansible Galaxy and use them
Use advanced Ansible features
  • Create and use templates to create customized configuration files
  • Use Ansible Vault in playbooks to protect sensitive data
Introduction
  • What is terraform ?
  • Why is terraform needed ?
  • Difference between Puppet , Ansible and Terraform.
Terraform Configuration
  • Terraform Workflow
  • Understand Providers , Resources , State , Variables
  • Referring registry.terraform and Terraform language (HCL)
  • Terraform Commands
  • Understand ins and out of HCl (HashiCorp Configuration Language)
Terraform Essentials
  • To install Terraform and verify installation .
  • Basic Commands - apply , plan , refresh .
  • To Build , Change , Destroy Infrastructure on Terraform .
  • Working with different providers like
    • Linux
    • GitHub
    • AWS
    • Azure
    • GCP
  • Variables in Terraform
  • Input vars : String, number, boolean
  • Special vars: Lists and maps
  • Loops
    • Count
    • For
    • For_each
  • Data Sources in terraform
  • Outputting data and Locals
Terraform for essentials of cloud automation
  • AWS S3 Storage
  • AWS VPC, Subnets, Gateway
  • AWS EBS, ELB
  • GCP Vms and Devops services
  • Using Vaults like AWS Secrets manager, Hashicorp vault
  • GCP Resources
Working State files and Resource graphs
  • terraform.tfstate and terraform.tfstate.backup file
  • Resource graphs in terraform
  • Generating resource graphs
  • Provisioning Linux instance with User data
  • Generating Resource graph on deployed instance
Advanced Terraform
  • Local-exec and Remote-exec
  • Terraform Module
  • Module testing discussion
  • Deploying Kubernetes services by calling modules
  • Deploying Kubernetes Services with GKE/EKS

 

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