SASIVARNAN S
Dharapuram
Summary
Experienced Linux System Administrator with over 5 years of hands-on expertise in managing, securing, and optimizing Linux server environments. Proficient in CentOS, Ubuntu, and Red Hat Enterprise Linux. Skilled in automation using GitLab and Puppet, as well as scripting with Bash. Strong troubleshooter focused on enhancing system performance and security. Demonstrated ability to deploy scalable solutions and maintain high availability of critical systems. Committed to continuous learning and staying current with industry trends to drive operational excellence.
Overview
9
9
years of professional experience
Work History
Linux System Administrator
Comodo Security Solutions
01.2019 - Current
- Managing comodo servers, vms and Maintain Beluga CDN network
- Unix/Linux system administrator with experience in installing and configuring servers with os upgrading kernel patches
- Monitoring production servers and services (Using Nagios to maintain server uptime, load and ensure the availability of server resources).
- Installation, configuration & Upgradation of Operating system (RHEL, Centos, Ubuntu).
- Installing and configuring beluga CDN. Creating and managing VM's on the servers.
- Creating system backups weekly, daily and maintain the backup files.
- Monitoring the performance of CPU, memory and making it to work on normal.
- Support for CDN related issues.
- Configuration and managing servers with RAID & LVM
- File servers installations & configurations (FTP, SAMBA, NFS).
- Monitoring Beluga cdn servers using Grafana tool.
- Creating and update the websites SSL for comodo domains.
Linux System Engineer
PingServ Solutions LLP
01.2016 - 01.2019
- Providing Linux servers both in VPS and Dedicated flavours from data centers in Europe, Netherland, Canada, and USA.
- Unix/Linux system administrator with experience in installing and configuring servers with os upgrading kernel patches.
- Managing data centers remotely of our clients & maintaining 99.99% uptime LINUX servers.
- Installation, configuration & Upgradation of Operating system (RHEL, Centos, Ubuntu).
- Installing and configuring XEN, KVM and OpenVZ Virtualizations. Creating and managing VM's on the servers.
- Linux Skills- Linux commands, Process Management, User Management, Linux IP configuration, Disk partition creation, LVM, LAMP, RAID Sticky bit concepts, Linux system logs.
- Monitoring production servers and services (Using Nagios to maintain server uptime, load and ensure the availability of server resources).
- Server bandwidth monitoring and DDOS tracking using iftop, iptraf tools.
- File servers installations & configurations (FTP, SAMBA, NFS).
- Networking and providing support for Windows and Linux server issues.
- Setting the cron jobs as per the client requirements.
- Monitoring the performance of CPU, memory and making it to work on normal.
- Backup and restoration of database.
- Installation, Configuration & Upgrade of Operating system (RHEL, Centos, Ubuntu).
- Booting the server in rescue mode, fixing file system inconsistency by running fsck over file system and checking FSTAB entry etc.
- Configuration and managing servers with RAID 0,1,5 & 10.
- Maintaining activities like creating/modifying user accounts, password administrator & security management.
- Security - IPtables, CSF, ufw, SSH hardening.
- Installation and configuration of Nagios and Squid proxy servers.
- Providing system support for 300+ Linux system backups/restoring.
- Knowledge in control panels like cPanel/WHM, SolusVM, Virtualizor and knowledge in various Linux distribution like RHEL, Ubuntu, Debian Centos, etc.
- Remotely accessing the server via SSH terminal and troubleshooting issues.
- Follow proper escalation matrix during emergencies and having experience in most popular ticketing system WHMCS.
- Collaborate with the team members and provide technical updates regularly and flexible with 24*7 shifts.
Education
BE - Electronics and communication engineering
Maharaja Prithvi Engineering College
Avinashi, Tamil Nadu01.2013
HSC -
Vishnu Lakshmi Matric Hr Sec School
Dharapuram, Tamil Nadu01.2009
SSLC -
Veveaham Hr Sec School
Dharapuram, Tamil Nadu01.2007
Skills
- Operating Systems - CentOS, RedHat, Ubuntu & Debian
- Virtualization - KVM, OpenVZ, Xen
- Data Storage - LVM & RAID
- Security and Firewall- IPTables,csf,ufw, firewalld, SElinux
- Monitoring tool - Nagios, Zabbix, Xymon
- Containerization : Docker
- Databases : MySQl, postgresSQL
- Version Control : Git, Gitlab, Github
- Scripting Languages : Bash
- Web Servers : Apache, Nginx
Contact number
+919566621656
Personal Information
- Date of Birth: 11/18/91
- Gender: Male
- Nationality: Indian
- Marital Status: Married
Hobbies and Interests
- Web Servers
- Networking
Disclaimer
I hereby declare that the above-furnished information's are true to the best of my knowledge and belief.
Timeline
Linux System Administrator
Comodo Security Solutions
01.2019 - Current
Linux System Engineer
PingServ Solutions LLP
01.2016 - 01.2019
BE - Electronics and communication engineering
Maharaja Prithvi Engineering College
HSC -
Vishnu Lakshmi Matric Hr Sec School
SSLC -
Veveaham Hr Sec School
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