A. Seetharam
Bengaluru,KA
Summary
Seasoned System Administrator with 4 years background in Information Technology. Progressive experience marked by continuous contributions above and beyond requirements. Career achievements in large-scale software deployments, network buildouts and data security.
Overview
4
4
years of professional experience
Work History
Linux Administrator
IDC Technologies Solutions India Pvt Ltd
2023.02 - 2023.11
- Installed, configured, and maintained services such as DNS, DHCP, NFS, Apache Web Server, Samba, SSH, RPM and YUM Repository.
- Worked with DBA's, Networking Team, and Developers to resolve their daily issues.
- Performed standard system administration tasks such as troubleshooting and problem resolution, patching, installing packages using rpm and yum, drivers, software and hardware upgrades.
- Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux 7/8.
- Wrote shell scripts for various system tasks such as back-ups, collecting and sorting logs, installation and monitoring.
- Configured iptables firewall and hardening Linux systems for system security.
- Managed disks and file systems using LVM.
- Administered Nagios monitoring tools for servers monitoring and incident alerts.
- Monitored performance of servers using tools such as sar, top, free, vmstat, iostat, traceroute, etc.
- Monitored and maintained the disk space and backup systems, and implemented change controls, capacity planning and growth projections on the systems.
- Performed troubleshooting existing user accounts, security objects and authorizations to resolve security conflicts by creating sudo rules, supporting users, setting up new accounts and password resets.
- Involved in daily incident management and resolved the day to day problems raised by the users and incidents which are logged by Event monitoring system.
Linux Administrator
Ideobiz Technologies Pvt Ltd
2020.01 - 2023.02
- Performed standard system administration tasks, Installation of OS using kickstart from Standard build, patching, software installation and hardware upgrades, troubleshooting and problem resolution.
- Setup and maintained Nagios monitoring for monitoring servers and application.
- Setup the yum repository in the server, upgraded the repository by appropriate patching and installing software packages and services using yum and rpm as required.
- Setup and maintained domain name system servers.
- Performed day to day Linux administration tasks such as user account management, directory services, file system sharing and permissions.
- Utilized logical volume manager and swap to create, modify, delete file systems.
- Optimized system and application performance using techniques like shutdown, reboot, start and stop services and tools to identify performance issues and solutions.
- Edited system configuration files: network settings, kernel parameters, service configuration files, cron.
- Loaded and unloaded modules as requirement in the Kernel and made them persistent to boot by making appropriate changes.
Education
Bachelor of Science - Information Technology
Hindusthan College of Arts And Science
Coimbatore, India08.2015
Skills
- RHEL 6/7/8, CentOS, Oracle Linux,Suse Linux.
- Scripting: Bash
- Storage environments: NAS, LVM, load balancer
- Server Management: DNS, DHCP, NFS, Apache Web Server, SAMBA, FTP
- Backup systems: rsync, tar, TSM.
- Deep understanding of networking: Iptables, Firewalld, TCP/IP, UDP, DHCP, Postfix, SMTP.
- Troubleshooting: top, free, ping, tcpdump, ssh, telnet, netstat, traceroute, sar and nc...
- Strong knowledge of Virtualization systems: VMware ESXi, vSphere Client, vMotion.
- User administration: Centrify.
- Excellent knowledge in system security hardening: SELinux/ACL and chroot etc
- Web Server Load Balancing Systems
- Domain Name Resolving Systems
- Disaster Recovery Netbackup
Skills
Linux administration, Apache Web Server, Backup, Bash, Hardware upgrades, DHCP, Disaster Recovery, Domain name system, DNS,Firewall, FTP, NAS, NFS, Networking, Operating System, problem resolution, LVM, Red Hat, SAMBA, SSH, Shell scripts, SMTP, software installation,System configuration, TCP/IP, Telnet, Troubleshooting, Netbackup, Patch Management, Centrify, TSM Backup, SPLUNK, Azure File share, Remedy Force, Microsoft Azure.
Timeline
Linux Administrator
IDC Technologies Solutions India Pvt Ltd
2023.02 - 2023.11
Linux Administrator
Ideobiz Technologies Pvt Ltd
2020.01 - 2023.02
Bachelor of Science - Information Technology
Hindusthan College of Arts And Science
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