Red Hat Linux HA Cluster Engineer-Pacemaker & Corosync (Contract)

Role: Red Hat RHEL High Availability Engineer

Experience: 4+ years
Location: Mumbai / Noida
Work Mode: As per project requirement

Role Overview

We are looking for an experienced Red Hat Enterprise Linux (RHEL) High Availability Engineer with strong hands-on experience in Pacemaker, Corosync, RHEL HA Add-On, shared storage and cluster management.

The candidate will be responsible for designing, implementing, configuring and validating highly available RHEL environments across enterprise infrastructure.

Key Responsibilities

• Design and implement RHEL High Availability clusters using Pacemaker and Corosync.
• Configure and manage RHEL HA Add-On across production environments.
• Configure and manage HA resource groups for application, database and NFS workloads.
• Work on shared storage architecture using RHEL Resilient Storage components.
• Configure and validate STONITH/fencing mechanisms using IPMI, iLO, iDRAC or virtual fencing agents.
• Perform cluster installation, configuration, upgrades and validation.
• Troubleshoot cluster, networking, storage and resource-related issues.
• Configure appropriate resource dependencies, ordering and monitoring within Pacemaker.
• Perform failover and recovery testing, including controlled switchovers and node failure scenarios.
• Validate cluster behaviour during network isolation and fencing scenarios.
• Provide technical support for data migration activities from legacy storage to RHEL-managed storage.
• Perform RHEL environment performance tuning and optimization based on Red Hat best practices.
• Prepare technical/deployment documentation and conduct knowledge-transfer sessions for operations teams.

Required Skills

• Strong hands-on experience with RHEL Administration.
• Strong experience with Red Hat Pacemaker & Corosync.
• Experience with RHEL HA Add-On.
• Good understanding of High Availability and cluster architecture.
• Experience with STONITH/Fencing IPMI, iLO, iDRAC or equivalent.
• Experience with shared storage and RHEL Resilient Storage.
• Good understanding of NFS and storage management.
• Experience managing HA resource groups and dependencies.
• Strong troubleshooting skills across Linux, networking and storage.
• Experience with cluster failover, recovery and validation testing.
• Good understanding of RHEL system administration, patching and configuration.

Good to Have

• Experience working with database HA environments.
• Experience with legacy cluster migration.
• Exposure to Veritas Cluster / Veritas storage environments.
• Experience with enterprise SAN/storage environments.
• Red Hat certifications such as RHCSA/RHCE or relevant RHEL/HA certifications.
• Experience preparing LLD/technical deployment documentation.