System Administrator Management

MICHAEL OJIGBO

Unix/Linux System Administrator

HYATTSVILLE, MD

An experienced unix/linux Systems Administrator with over 3 years of experience, am creative, multi-tasking and team oriented with strong interpersonal skills

Work Experience

Unix/Linux System Administrator

Trinitech Consulting Inc

-

Beltsville, MD

April 2012 till date

Project Description: Projects conducted on various sites had involved the installation, configuration and maintenance of Solaris and Linux servers.

Responsibilities:

• Performed advanced installation on Linux and Solaris servers using kickstart and jumpstart respectively.

• Created and Managed User and Group Administration Access Privilege Settings using Role Based Access Control and SUDO

• Configure and troubleshoot TCP/IP, DHCP, DNS, NFS, CIFS, and Samba file servers in a multiplatform LAN/WAN (Solaris 10, Centos Linux 6.4 and RHEL

• Monitored and Hardened Solaris/Linux systems: Password Aging for accounts -Password Complexity-Capturing failed logins attempts - Access restriction unauthorized users

• Scheduling of automated processes including full and incremental backups using tar and cpio; migrate and enlarge file systems on Solaris 10

• Managed system processes and scheduled processes with the cron utilities

• Configured the services for sharing resources from UNIX such as remote login through SSH, TELNET, FTP.

• Installed packages as needed, installed and configured new hard drives and memory

• Installed Recommended Sun OS patch upgrade for production/development servers using Live upgrade

• Ticketing/Troubleshooting experience in a Linux environment alert logs, traced files and file System maintenance

• Controlled the System Logging services, and examining system Log Files of all system events

• Monitored System Performance of Virtual memory, Managed Swap Space, Disk utilization and CPU utilization

• Developed bash scripting for automating administration tasks like customizing user environment, and performance monitoring and tuning with nfsstat, iostat,

• Troubleshoot and analysis of hardware and software failures for various Solaris and Linux servers (core dump and log file analysis).

• Managed VMware and create virtual machines for developers whenever required

Additional Information

Technical Expertise

• Broad experience with Introducing Solaris 10, RHEL 6.4 and Centos 6.4 servers to the network: OS installation and configuration- standard and advanced (net installation and jumpstart)

• Good experience in Using bash shell scripting, crontab to schedule tasks and automate processes including full and incremental backups using tar, cpio, and ufsdump; migrating and enlarging file systems on Solaris 10

• Solid experience in setting up, configuring and troubleshooting TCP/IP, DHCP, DNS, NFS, CIFS, and Samba servers in a multiplatform LAN

• Good Experience in Hardening, Patching all Solaris 10 servers (using 10-recommended patches), and upgrades (release) using (single user mode) and on production servers (live upgrade)

• Strong Experience in Systems Security Administration, Role Based Access Control and SUDO

• Vital Experience in Monitoring and log management on UNIX/Linux and Windows servers, including processes, crash and swap management, with password recovery and performance tuning

• Solid experience with User management, Creating and managing user account, groups and access levels

• Setup a domain and an active directory on a Windows 2008 server; install and configure a samba server on Solaris 10 and mapping to the Windows 2008 server

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