Linux Engineer

3 days ago

Hyderabad, Telangana, India CtrlS Full time US$ 90,000 - US$ 1,20,000 per year

We are looking for a skilled Linux Virtualization & HA Engineer to join our infrastructure team (design and maintain a fault-tolerant KVM cluster using Pacemaker and other open-source tools).

Key Responsibilities

  • Design, implement, and manage KVM-based virtualization on enterprise Linux platforms (RHEL/SUSE/Debian-based).
  • Deploy and configure Pacemaker and Corosync for HA cluster management.
  • Integrate shared storage, or for replicated VM storage.
  • Implement fencing/STONITH mechanisms to protect data integrity in failover scenarios.
  • Create and manage libvirt XML definitions and manage VMs via virsh and related tooling.
  • Configure pacemaker remote or equivalent to integrate guest VMs into HA clusters.
  • Develop and maintain cluster resource definitions, constraints, and failover policies.
  • Perform routine patching, upgrades, and cluster health checks.
  • Monitor and troubleshoot performance, network, and storage issues.
  • Implement backup and disaster recovery strategies for virtualized workloads.
  • Create detailed technical documentation and train internal teams on HA KVM environments.
  • Collaborate with DevOps, Networking, and Storage teams for infrastructure integration.

Required Skills & Qualifications

  • 5+ years experience with Linux system administration (RHEL, CentOS, SUSE, Debian, or similar).
  • Experience with SUSE Linux Enterprise High Availability Extension (SLE-HA) or RHEL HA Add-on.
  • Strong expertise in KVM/QEMU and libvirt.
  • Hands-on experience with Pacemaker/Corosync HA clusters.
  • Knowledge of DRBD, Ceph, or other shared storage technologies for VM replication.
  • Proficiency in networking concepts (bridging, VLANs, bonding, static routing, multicast for Corosync).
  • Experience with STONITH/fencing devices (IPMI, iLO, DRAC, etc.).
  • Scripting skills in Bash, and familiarity with Python or Ansible for automation.
  • Solid understanding of disaster recovery planning and HA design patterns.
  • Strong troubleshooting skills in large-scale Linux environments.
  • Familiarity with Proxmox VE, oVirt, or OpenStack.
  • Knowledge of Kubernetes/ KubeVirt for containerized virtualization.
  • Experience with monitoring tools (Zabbix, Prometheus, Grafana).
  • RHCSA/RHCE, SCA, or similar certifications.

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