Job Description

The Linux Administrator (L2) will be responsible for the installation, configuration, monitoring, and maintenance of Linux servers across production and non-production environments. The role involves providing day-to-day operational support, troubleshooting, and performance optimization, while ensuring high availability, security, and compliance of systems.
Key Responsibilities:
  • Core Administration & Monitoring
    • Installation & configuration of Linux Operating Systems.
    • Hardening of Linux OS and patch installation.
    • Health monitoring of Linux servers (CPU/Memory/Disk/System Load).
    • OS reboot, shutdown, and start-up procedures.
    • OS log management (rotation, purging) and monitoring of system logs.
    • Disk management, file system management, user & group management.
    • Configuration of network, NTP, and OS parameters.
    • Installation of RPMs/software packages (Java, sudo, lsof, etc.).
    • Management of cron jobs.
  • Support & Coordination
    • First-level coordination with Application Support and Development teams for OS-related issues.
    • OS support during DB patching, application patching, and hardware maintenance.
    • Troubleshooting and resolution of hardware, software, and communication problems.
    • Logging calls with hardware OEM/AMC vendors for replacement of failed parts.
    • Logging and coordination with software OEM/ATS vendors for software-related issues.
    • Provide L2-level support and resolution of issues escalated by L1.
  • Advanced Administration
    • Linux Kernel upgrade and OS migration.
    • Installation/configuration of network services (DNS, NFS, SAMBA, YUM server).
    • SAN storage-related configuration in Linux servers.
    • Support for DC/DR switchover and switchback activities.
    • Installation/configuration of Apache and Tomcat servers.
    • Performance monitoring, tuning, automation, and optimization activities.
    • RedHat PCS cluster configuration, troubleshooting, and support.
  • Architecture, Compliance & Management
    • Planning & designing deployment architecture for Linux servers.
    • Setup and administration of high availability and disaster recovery (HA/DR) environments including clustering, failover, fencing, and recovery.
    • Capacity planning and performance statistics analysis.
    • Formulation of backup and recovery strategies.
    • Audit and compliance support.
    • Documentation, inventory maintenance (servers, users, groups).
    • Team/resource management and coordination with client/vendors/other support teams.

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