ES Tech
Linux & Cloud | S. Elavarasan
Linux System Administrator

Hi, I'm S. Elavarasan
Linux Admin & DevOps Enthusiast

I help keep Linux servers healthy, secure and stable through troubleshooting, automation, and real-time problem solving. Passionate about log management, backups, and building learning content for aspiring system administrators.

4+ years Linux admin experience Rsyslog + Logrotate + AWS S3 Backup & Monitoring Automation

📧 Email: elavarasansargunanathan@gmail.com

Profile Snapshot Linux System Administrator
Experience
4+ years
Production support Troubleshooting
Focus Areas
Logs & Automation
Rsyslog Logrotate
Cloud & Tools
AWS basics
EC2 S3 bash
Goals
Linux + DevOps
Ansible CI/CD (learning)
"Every outage is a lesson. Every log line is a clue."
Currently open to Linux Admin / L2 / DevOps Support Roles
Skills & Tech Stack
Linux, logging, automation, networking and cloud fundamentals.

Linux Administration

Managing production servers, users, permissions, services, boot process and performance tuning.

RHEL / CentOS / Ubuntu systemd & services Disk & LVM Filesystem hierarchy

Logging & Monitoring

Building centralized logging solutions, log rotation, and basic monitoring using scripts and tools.

Rsyslog Logrotate Journalctl Log analysis

Automation & Scripting

Automating backups, log cleanup, health checks and routine maintenance tasks.

bash scripting cron Ansible (basics)

Networking & Security

Network diagnostics and firewall management for secure server access and troubleshooting.

SSH firewalld iptables ping / traceroute / ss

Cloud & Storage

Using cloud services for offsite backups and log archiving, with a focus on AWS.

AWS basics EC2 S3 Offsite backups

Soft Skills

Strong troubleshooting mindset, documentation habit and a passion for teaching Linux concepts.

Problem solving Knowledge sharing Team support
Highlighted Projects
Real-time Linux projects showcasing log management, automation and troubleshooting.

Centralized Log Management (Rsyslog + Logrotate + AWS S3)

Rsyslog, Logrotate, bash, cron, AWS S3

Designed a central log server to collect logs from multiple Linux nodes. Implemented rotation, compression and archival policies, and synced rotated logs to S3 for long-term retention.

Central logging Disk space optimization Offsite backups

Backup Automation for Critical Directories & DB Dumps

bash, cron, tar/gzip, rsync, (optional) S3

Wrote scripts to back up web content, configuration files and database dumps with timestamped archives. Automated schedule using cron and implemented cleanup for old backups.

Disaster recovery Automation

Log Analysis Toolkit for Incident Troubleshooting

bash, grep/awk, journalctl

Built a collection of shell one-liners and scripts to quickly filter and highlight errors from system and application logs, improving MTTR during server and application incidents.

Faster incident response Reusable scripts

Server Health & Resource Monitoring Scripts

bash, cron, top/vmstat/iostat, mail (optional)

Created scripts to monitor CPU, RAM, disk usage and service status. Generated summary reports and simple alerts when thresholds were exceeded.

Resource monitoring Proactive alerts

Firewall Hardening (firewalld vs iptables)

firewalld, iptables, SSH hardening

Configured firewall rules using both firewalld and iptables, documented differences and best practices, and hardened SSH access to reduce attack surface.

Security Network access control
Professional Experience
Hands-on Linux administration experience in a startup environment with production systems.
Linux System Administrator / Technical Support
Startup Company – India
4+ years of experience
  • Managed Linux servers for internal and client-facing applications.
  • Handled user, group, permission, service and package management on a daily basis.
  • Configured and maintained centralized logging using Rsyslog and Logrotate.
  • Investigated production issues (service down, high CPU/RAM, disk full) and restored services.
  • Developed scripts for backups, health checks and log cleanup, scheduled using cron.
  • Collaborated with developers to troubleshoot application-level problems on Linux servers.
  • Used AWS S3 for storing backups and long-term log archives.
Contact & Availability
Open to Linux Administrator, L1/L2 Support, and DevOps-support roles.

Contact Details

Name
S. Elavarasan
Email
elavarasansargunanathan@gmail.com
Location
India (Open to remote / relocation as per opportunity)
Brand
ES Tech – Linux & Cloud Learning

Feel free to reach out for Linux administration roles, freelance troubleshooting support or collaboration on Linux/cloud learning content.

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