System Administrator Red Hat

Lukeman Ibrahim

**** *********** **. ******, **,*1144 347-***-**** *******.*******@*****.*** www.linkedin.com/in/lukeman-ibrahim

Objectives

A reliable System Administrator with 3 years of experience delivering critical system administration solutions. Demonstrates meticulous attention to detail and technical expertise, specializing in server building, installations, upgrades, patching, migration, troubleshooting, backups, performance monitoring, virtualization, and fine-tuning on Red Hat Linux and CentOS environments.

Professional Experience

Epic Oracle (Cerner) - Linux OS System Support - Contractor

05/2021 - Present Remote/Baltimore, MD

Linux Administration: Managed installation, configuration, monthly patching, and daily troubleshooting of Red Hat Enterprise Linux (RHEL) systems.

RedHat Satellite Management: Assigned servers to patch groups, configured repositories, published versions, and promoted channels for efficient updates.

Monitoring and Backup: Analyzed Grafana monitoring reports and Unitrends backups; deployed VMware ESXi 7.0 snapshots for system integrity and recovery.

Intrusion Detection: Monitored for malicious activity using Snort, Suricata, and OSSEC, ensuring real-time alerts and swift response.

AD Integration: Joined RHEL servers to Active Directory, querying users and groups using PowerShell. Set up SSSD communication to allow AD group access to RHEL servers.

System Administration: Managed users, file systems, permissions, and directories; configured sudo files, performed kernel tuning, and resolved service failures (network, SSH, etc.).

Data Migration: Executed server migrations between datacenters and virtual servers across datastores using SCP, RSYNC, AT, and CRONTAB for automation.

Automation & Scripting: Developed Ansible playbooks, Bash, and Python scripts to automate various tasks and streamline processes.

Documentation & Training: Created documentation for new and trained medical staff on hardware/software deployment.

Virtualization & Backup: Managed VMware snapshots and verified Unitrends backups for assigned servers to maintain system reliability.

NFS Setup: Configured NFS home directories and mounts for application deployment.

Security Compliance: Adhered to Linux security standards, managing records in Change Management systems.

Service Monitoring: Utilized Icinga to detect and resolve issues, ensuring minimal downtime for critical services.

Ticketing System: Experienced with ServiceNow for efficient incident and request management.

On-Call Support: Participated in on-call rotation every two months, providing support from 5 pm to 7 am (Mon-Sun).

Good Samaritan Hospital - Tech System Support

05/2021 - Present Baltimore, MD

Monitored servers using Prometheus and Grafana, ensuring optimal performance and quick response to issues.

Provided technical support for PCs, network connectivity, and peripheral devices, resolving user issues efficiently.

Managed the onboarding process for new employees and coordinated server disk replacements with vendors (Epic, HPE, Cisco).

Supported and managed the hospital's EMR system (MedHost), generating reports, running queries, and performing system backups.

Conducted monthly patching and troubleshooting of network issues to maintain system stability and integrity.

Certification

CompTIA Security+

LPIC-1 Certified Linux Administrator

LPI Linux Essentials

Education

Community College of Baltimore County – Computer and Information Technology (In-Progress)

Bronx Community College – Nuclear Medicine Technology (Jan 2015 - Dec 2019)

Skills & Abilities

·Operating Systems: RHEL (6.x, 7.x, 8.x, 9.x), CentOS (6.x, 7.x, 8.x, 9.x), Windows 11, Windows Server 2020

·Hardware: HP ProLiant DL380, ML350, BL460c [Gen8, Gen9, Gen10]

·Software/Applications/Tools: VMware ESXi 7.0, MobaXterm SSH client, PowerShell, RedHat Satellite, Icinga Monitoring, Unitrends Backup system, ServiceNow Ticketing System

·Languages: Ansible Playbook (YML), Bash Scripting, Python scripting

·Networking: TCP/IP, NFS, DNS, DHCP, LAN, FTP/TFTP, SSH, SFTP

·Storage: LVM, SCSI, SATA, Ext4, XFS, SAN, NFS, SAMBA, RAID (0/1/5/6/10)

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