Kasi Ramakrishnan
Linux Administrator
Thoothukudi
Summary
Experienced with Linux system management, including installation, configuration, and maintenance of servers. Utilizes scripting languages to automate repetitive tasks and enhance system efficiency. Knowledge of network protocols and security measures to safeguard critical data and maintain system integrity.
Overview
3
3
years of professional experience
4046
4046
years of post-secondary education
3
3
Languages
Work History
Linux System Administrator
Nixserv IT solutions Pvt Ltd
10.2022 - Current
- Provided 24/7 support for customers across multiple locations, with rotational shifts and team coordination.
- Resolved customer issues through tickets, email, phone, and chat, offering on-desk support when necessary to ensure minimal service disruption.
- Collaborating with Data Center personnel to set up or upgrade hardware according to customer specifications, and liaising with vendors to resolve the issue.
- Performed VM migrations across multiple platforms, including KVM to KVM, OpenVZ to KVM, and VMware to RHEL Cockpit.
- Worked extensively on DCIM platforms such as "DCImanager 6" for managing data center resources.
- Expertly installing operating systems on servers from manufacturers such as HP, Dell, ASUS, Supermicro, Gigabyte, and NVIDIA, including GPU servers with passthrough.
- Employing IPMI and Spider-KVM to access servers, boot into rescue mode, and troubleshoot maintenance and other issues, including resolving file system inconsistencies using fsck and verifying the FSTAB entries.
- Resolving the kernel panic, fixing booting-related issues, like reinstalling GRUB and booting GRUB via GRUB commands when GRUB fails.
- Installing and configuring virtualization on Linux and Windows servers, including creating the virtual machines using platforms like Virtualizor, Hyper-V, and Proxmox.
- Setting up the control panels (e.g., cPanel, DirectAdmin, Plesk) on Linux and Windows servers, including IIS.
- Installing and configuring the monitoring servers with Zabbix to ensure optimal performance and identify potential issues.
- Applying patches and packages to maintain systems up-to-date with the latest updates and security fixes.
- Implementing and completing the server hardening techniques, securing servers, and setting up the wheel user.
- Configuring backups using Acronis for files, applications, and MSSQL, and performing system restores via bare metal restore in case of crashes.
- Installing and configuring FTP servers.
- Installing and configuring the Apache, Nginx, and LightSpeed web servers for web hosting.
- Managing databases such as MySQL, MariaDB, and MSSQL, including creating, taking dumps, and restoration.
- Configuring and maintaining the Exim Mail server for efficient email communication.
- Installing and configuring the SSL certificates for domain security on both plain and panel-based servers.
- Demonstrating a good understanding of network concepts such as TCP/IP.
- Implement the security measures, including IP tables, SSH, and utilizing tools to prevent DDoS attacks, harden servers, and identify malicious activities.
- Proficient network tasks, such as changing the VLAN of the switch port and speed, and identifying the unauthorized usage of an IP address using a MAC address and MAC address binding with the IP.
- Configuring network bonding between server ports to enhance network speed, and ensure reliable backup.
- Implemented monitoring tools for real-time analysis of system performance, allowing for proactive identification of potential issues before they impacted users.
- Improved system performance by optimizing Linux server configurations, implementing efficient backup processes, and performing regular maintenance tasks.
- Provided hands-on support for end-users experiencing issues with Linux-based systems or applications, facilitating quick resolutions and minimal disruptions to productivity.
- Client: Serverwala Cloud Data Centers, Pvt. Ltd.
Education
Bachelor of Arts - Bachelor of Computer Applications
Kamaraj College of Arts And Science
Thoothukudi, India 04.2001 - 01.2019
HSC - Computer Science
Margoschis Higher Secondary School
Nazareth, India03-2017
SSLC - Computer Science
Margoschis Higher Secondary School
Nazareth, India03-2015
Disclaimer
I certify that the information on this resume is true and accurate to the best of my knowledge.
Timeline
Linux System Administrator
Nixserv IT solutions Pvt Ltd
10.2022 - Current
Bachelor of Arts - Bachelor of Computer Applications
Kamaraj College of Arts And Science
04.2001 - 01.2019
HSC - Computer Science
Margoschis Higher Secondary School
SSLC - Computer Science
Margoschis Higher Secondary School
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