Red Hat High Availability Clustering
Red Hat High Availability Clustering is a solution that provides failover services and redundancy for critical applications and services in a Red Hat Enterprise Linux (RHEL) environment.
- Failover Support: Automatically transfers services to another node in case of failure.
- Load Balancing: Distributes workloads across multiple nodes for optimal performance.
- Service Recovery: Restores failed services quickly to minimize downtime.
- Resource Management: Manages shared resources like storage and IPs across the cluster.
- Quorum and Fencing: Ensures cluster consistency and prevents split-brain scenarios.
Before learning Red Hat High Availability Clustering, you should have:
- Basic Linux System Administration: Proficiency with Red Hat Enterprise Linux (RHEL) system management.
- RHCSA Certification: Completion of Red Hat Certified System Administrator (RHCSA) or equivalent experience.
- Networking Fundamentals: Understanding of networking concepts and configurations.
- Storage Management: Familiarity with managing storage solutions and shared storage concepts.
- Clusters and storage
- Create high-availability clusters
- Nodes and quorum
- Fencing
- Resource groups
- Troubleshoot high-availability clusters
- Complex resource groups
- Two-node clusters
- ISCSI initiators
- Multipath Storage
- Logical volume manager (LVM) clusters
- Global File System 2
- Eliminate single points of failure
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