System Administrator Manager

Linux System Administrator

Chicago, IL

Results-oriented Linux System Administrator with 7+ years of experience diagnosing and resolving complex

technical problems. Proven ability to work under pressure and demonstrate initiative to learn new material.

Adaptable in fast-paced, high-performance environments. Very well organized and detail oriented. Effectively

plan, install, configure and optimize the IT infrastructure to consistently achieve high availability and

performance. Insightful experience in implementation, operations and support functions of mission-critical

business solutions using IT as a tool.

Work Experience

Linux System Administrator

ICON RESOURCES INC.

Chicago, IL

September 2016 to July 2017

Performing standard system administration tasks, such as patching, software and hardware upgrades,

troubleshooting and problem resolution.

• Recovering Linux with rescued booting mode.

• Installing and configuring various services like NFS, DHCP, Apache Web Server, Mysql, Samba, SSH, YUM.

• Providing day-to-day user administration.

• Monitoring Network services, applications and servers using NAGIOS.

• Setting up and maintaining Domain Names System (DNS) servers.

• Performing regular disk management like adding / replacing hot swappable drives on existing servers

workstations, partitioning per requirements, creating new file systems or growing existing one over the hard

drives and managing file systems.

• Puppet Enterprise configuration and automation.

• Samba File sharing setup on Linux and Windows servers.

• Working on the installation & configuration of volume management using LVM and VERITAS Volume Manager,

VxFS file system.

• Automating server building using System PXE, Kickstart for RHEL Servers.

• Developing automated processes that run daily to check disk usage and perform clean up of file systems on

using shell scripting and Cron.

• Configuring distributed file systems and administering NFS server and NFS clients and editing auto-mounting

mapping as per system / user requirements.

Linux System Administrator

EZIS SOLUTIONS

Lincolnwood, IL

September 2013 to August 2016

• Specialized in System Administration working on Red Hat Enterprise Linux, Centos, Ubuntu.

• Involved in complete Administration tasks and documentation for the projects executed.

• Automated the configuration and maintenance of different services like DNS, DHCP, Server Migration, Network

Monitoring using Nagios, Configuring and Maintaining APACHE servers, SAMBA, SSH, SSL, SMTP and NFS

services, Security administration using IPtables, SElinux, RAIDs, LVM, performing the Automated Installations

using Pxe and Kickstart, Performance Monitoring & Tuning, Backups and Restoration.

• Created and maintained User accounts, profiles, security, rights, disk space and process monitoring.

• Installation, Configuration, file system management and RAID, Volume management through Logical Volume

Manager and Veritas Volume Manager (VxVM).

• Performed software installations and upgrades to Linux systems and maintained them in accordance with

established policies, procedures and service level agreements.

• Monitored and performed troubleshooting backups and scheduled Cron jobs.

• Automated administration tasks through use of Shell Scripting.

• Configured and deployed patches, upgrades, bug fixes on both physical and virtual RHEL servers.

• Package management using RPM and YUM in RHEL.

• Performed support for mission critical applications.

Jr. Linux System Administrator

HGS HOLDING

IZMIR, TURKEY

January 2010 to July 2013

• Installation and administration of Linux Operating Systems

• Installation and updating packages on servers.

• Deploy and configure Redhat, CentOS, Ubuntu servers

• Performed user administration: add/delete/modify users & user groups and respective privileges and resource

permissions.

• Troubleshoot issues related to servers and checking root logs.

• Troubleshoot basic network, software, and printing problems.

• Troubleshoot Nagios Alerts

• Responsible for 24x7 production support.

• Under general supervision, determine root cause for issues and identify resolutions

Skills

DNS (6 years), NAGIOS. (7 years), NETWORK FILE SYSTEM (6 years), NFS (6 years), scripting (4 years)

Additional Information

Technical Summary:

• Rhel, CentOs, Ubuntu • ESXi, vCenter, vMotion

• Monitoring with Nagios • HTTP, FTP, TCP/IP, LAN, SAN, ISCSI

• SElinux, Iptables, TCP Wrappers • Samba, NFS, DNS, Mysql, NIS, Yum repositories

• LVM and VxVM volume management • Puppet Enterprise configuration and automation

• Veritas Cluster High Availability • PXE boot environment, Kickstart

• Administration tasks automation with Cron and bash scripting

• System monitoring and Network troubleshooting: vmstat, iostat

ping, traceroute, netstat, tcpdump, free, lsof, du, top, fsck

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