Linux Administrator (RHEL/SUSE/Debian)

Infosys · Bangalore, India · 1-3 years · Full-time

Key skills

  • Linux

Job description

Responsibilities:

We are seeking a skilled Linux Administrator with hands-on experience managing enterprise Linux environments, including RHEL, SUSE, and Debian-based distributions (Debian/Ubuntu). The role involves administration, troubleshooting, patching, upgrades, virtualization support, automation, and incident management for mission-critical infrastructure.

Key Responsibilities

  • Administer and support large-scale Linux environments including RHEL, SUSE, Debian, and Ubuntu servers.
  • Manage Linux server lifecycle activities including provisioning, configuration, patching, upgrades, migrations, and decommissioning.
  • Perform Linux OS in-place upgrades, application migrations, and new server builds.
  • Apply security patches, maintenance releases, kernel updates, and server hardening standards.
  • Manage physical and virtual servers hosted on Proxmox and Hyper-V platforms.
  • Administer logical volume management (LVM), filesystem expansion, storage allocation, and disk migration activities.
  • Perform startup/shutdown activities, log analysis, troubleshooting, and root cause analysis for production issues.
  • Monitor server health, critical services, capacity utilization, and system performance.
  • Manage DNS, VM snapshots, virtualization resources, and networking configurations.
  • Provide L2/L3 support for incidents, problems, changes, and service requests.
  • Coordinate with vendors for issue resolution and service restoration.
  • Prepare operational reports, capacity reports, and technical documentation.
  • Create and maintain knowledge base articles, SOPs, and support documentation.

Mandatory Skills

  • Linux Administration (RHEL, SUSE, Debian, Ubuntu)
  • Red Hat Enterprise Linux (RHEL)
  • SUSE Linux Enterprise Server (SLES)
  • Debian Linux / Ubuntu Administration
  • Linux Server Build & Migration
  • Linux Performance Tuning & Troubleshooting
  • LVM (Logical Volume Management)
  • Kernel Patching & Package Management
  • RHEL Satellite Server
  • Proxmox Administration
  • Hyper-V Administration
  • DNS & Networking Fundamentals
  • Incident, Change & Problem Management
  • ITIL Processes
  • Root Cause Analysis (RCA)

Preferred Skills:

Technology->Infrastructure-Server Administration->Linux Admin,Technology->Infrastructure-Server Administration->Unix Server administration (HP-UX,IBM-AIX, Sun Solaris, Redhat Linux),Technology->Server-Virtualization->Microsoft Hyper-v->Hyper-V

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