Linux Server Administrator

Fourth Dimension Technologies; Madurai District; On-site; INR 300,000 - 550,000; Full time

Job summary

Fourth Dimension Technologies in Madurai seeks a Linux Server Administrator to handle day-to-day server operations across multiple distributions, web server support, and basic database tasks.

You'll automate routine work with shell scripts and Ansible, monitor health with Nagios or Zabbix, and enforce security, backup, and recovery procedures. This role requires at least 3 years of experience and is open to male candidates only, with a 6-day work week on site in Madurai.

Qualifications

• 3+ years of Linux administration experience.
• Experience with RHEL/Ubuntu/CentOS/Rocky/AlmaLinux distributions.
• Knowledge of Apache/Nginx web servers and MySQL/PostgreSQL/MariaDB basics.
• Familiarity with SSH, firewalld/UFW, backups, and security hardening.

Responsibilities

• Administrate and maintain Linux servers, including installation, configuration, and patching.
• Install and manage web servers (Apache/Nginx) and perform basic database administration.
• Configure FTP/SFTP and manage users and permissions.
• Manage user accounts, groups, sudo access and access controls.
• Develop shell scripts and run Ansible playbooks for automation.
• Monitor systems with Nagios/Zabbix and respond to alerts.
• Implement basic Linux security hardening and patching.
• Configure backups with rsync/cron and verify restorations.
• Manage Docker basics and basic deployments; troubleshoot networking.
• Document configurations and assets.

Job description

Role & responsibilities:

Linux Server Administration:

Perform day-to-day administration and maintenance of Linux servers including installation, configuration, service management, monitoring, patching, and basic troubleshooting across distributions such as Red Hat Enterprise Linux, Ubuntu, CentOS, Rocky Linux, and AlmaLinux.

Web Application & Database Support:

Install, configure, and maintain web servers such as Apache HTTP Server and Nginx. Perform basic database administration activities for MySQL, PostgreSQL, and MariaDB, including database creation, user management, service monitoring, scheduled backups, and basic backup restoration testing.

FTP & SFTP Administration:

Configure and maintain FTP and SFTP services using tools such as vsftpd and OpenSSH. Manage users, authentication, directory permissions, access restrictions, and troubleshoot basic file-transfer issues.

User & Access Management

Create and maintain Linux users and groups, configure file and directory permissions, manage sudo access, and ensure users are provided with appropriate access based on approved requirements.

Shell Scripting & Automation:

Develop basic shell scripts to automate routine Linux administration activities. Execute and maintain basic Ansible playbooks for configuration management and repetitive administrative tasks.

System & Service Monitoring:

Monitor server availability, CPU, memory, disk utilization, services, logs, and application health using monitoring tools such as Nagios and Zabbix. Investigate alerts, perform initial troubleshooting, resolve known issues, and elevate complex incidents when required.

Linux Security Administration:

Perform basic security activities including firewall configuration using firewalld/UFW, SSH configuration, SSH-key authentication, account security, disabling unnecessary services, applying approved security patches, and implementing documented Linux hardening standards.

Backup & Recovery:

Configure and monitor scheduled backups using tools such as rsync and cron. Verify backup completion, perform basic restoration testing, and participate in recovery activities according to documented backup and disaster-recovery procedures.

Docker Administration:

Perform basic Docker administration including managing images and containers, starting/stopping containers, checking container logs, monitoring container status, and supporting basic application deployments.
Linux Networking: Configure and troubleshoot network interfaces, IP addresses, gateways, routing tables, DNS settings, hostname resolution, and basic TCP/IP connectivity issues.

Incident & Troubleshooting Support:

Perform initial troubleshooting of Linux server, service, application, storage, network, and performance-related incidents. Resolve known issues using documented procedures and elevate complex problems to Level 2/Level 3 teams when required.

Documentation & Asset Management:

Maintain Linux server inventory, asset information, configuration records, standard operating procedures, troubleshooting documents, backup records, and other operational documentation.

Preferred candidate profile:

Good in communication

Only Male candidates can apply

Exp Level:3+ Yrs

Job Location: Madurai

6 Days working in week