Linux Server Administrator

3 days ago

Kochi, India HashRoot Full time

Job Description


We are looking for a motivated and technically skilled Linux Server Administrator to join our team. The ideal candidate will have hands-on experience with Linux operating systems, virtualization platforms like Proxmox, and a strong understanding of networking, troubleshooting, and system maintenance.

You will be responsible for maintaining the integrity, security, and efficiency of our Linux server infrastructure, while also working closely with the help desk and onsite support teams.


Key Responsibilities


  • Install, configure, and maintain Linux servers (Debian, Ubuntu, CentOS, RHEL, Fedora, etc.)
  • Manage user accounts, permissions, and security policies.
  • Set up and maintain virtualization environments using Proxmox VE.
  • Perform regular system monitoring, backups, and disaster recovery operations.
  • Configure and troubleshoot network services (DNS, DHCP, NAT, VPN, VLANs).
  • Integrate and manage CDNs and DNS-level services for optimized content delivery.
  • Conduct hardware diagnostics and coordinate with onsite staff for replacements and upgrades.
  • Maintain documentation for system configurations, processes, and procedures.
  • Utilize monitoring tools like Zabbix, Nagios, Prometheus, and Grafana to ensure system health and performance.
  • Implement server hardening and security best practices.


Required Skills and Competencies


1. Linux System Administration

  • Installation and configuration of major Linux distributions.
  • Partitioning and file system management (ext4, XFS, ZFS, Btrfs).
  • Package management (APT, YUM/DNF, Pacman, Zypper).
  • User and group management, sudo access, ACLs, SELinux/AppArmor.

2. Virtualization & Hosting

  • Proxmox VE installation and management.
  • KVM virtual machines and LXC containers.
  • Backup and restore strategies in Proxmox.
  • Storage integration (ZFS, Ceph, NFS, iSCSI).

3. Networking Fundamentals

  • IP addressing, routing, VLANs, VPN setup.
  • Firewall configuration (iptables, nftables, ufw).
  • DNS/DHCP and CDN integration.

4. Troubleshooting & Maintenance

  • OS-level and boot troubleshooting.
  • Log analysis using system tools (journalctl, rsyslog).
  • Hardware diagnostics (SMART, RAID, network interfaces).
  • Remote management via iLO, iDRAC, or IPMI.

5. Help Desk Integration

  • Basic knowledge of WHMCS for support ticket handling and customer interaction.

6. Monitoring & Security

  • Familiarity with tools like Nagios, Zabbix, Prometheus, Grafana.
  • Experience with system hardening and SSH best practices.


Preferred Qualifications


  • 1.5–2 years of relevant experience (or less with a strong skill set).
  • Linux certifications (RHCSA, LPIC-1, or equivalent) are a plus.
  • Strong analytical and problem-solving skills.
  • Excellent communication and documentation abilities.

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