Overview
The Red Hat High Availability Clustering (RH436) course is designed for senior Linux system administrators to learn how to deploy, configure, and manage high-availability clusters in mission-critical enterprise environments. This 4-day, lab-intensive course focuses on setting up and managing clusters using Pacemaker, configuring shared storage with Resilient Storage Add-On, and ensuring high availability of services like web servers and databases. The course prepares you to create resilient systems that maximize uptime and reliability.
Objectives
By the end of this course, leaner will be able to:
- Install and configure a high-availability cluster using Pacemaker.
- Create and manage highly available network services within a cluster.
- Troubleshoot and resolve common cluster issues.
- Configure and manage shared storage, including iSCSI and multipathing.
- Implement and manage GFS2 cluster file systems for shared storage.
Prerequisites
- Red Hat Certified System Administrator (RHCSA) certification or equivalent experience.
- Red Hat Certified Engineer (RHCE) certification is recommended for better comprehension.
- Experience in managing Linux-based environments.
- Familiarity with network services and storage technologies.
- Internet access is required for course participation.
Course Outline
- Learn the fundamentals of high availability clusters and create a basic cluster using Pacemaker.
- Manage cluster nodes and understand quorum to ensure cluster stability.
- Set up and manage resources and resource groups to ensure services remain highly available.
- Diagnose and resolve common issues in high availability clusters.
- Configure iSCSI initiators for resilient access to block-based storage.
- Implement LVM in a cluster-aware configuration to manage shared storage effectively.
- Deploy and manage GFS2 to provide tightly-coupled shared storage.
- Identify and eliminate vulnerabilities in your cluster to enhance uptime.
- Automate cluster deployment and resource management using Ansible.
- Special considerations and best practices for managing two-node clusters.
- Implement strategies for high availability and resilience in production environments.