Okechukwu Johnson Agwu
Upper Marlboro,MD
Summary
Linux Systems Administrator with enterprise computing experience in various Linux distributions including Red Hat, CentOS and Ubuntu. I have worked in Windows environment with Software, Hardware and Database Technologies. I have field experience in Red Hat Enterprise Linux System Administration. I have used monitoring tools, command Line, Nagios to respond to system alerts, outages and other critical events. I have performed Logical Volume Management, Package Management using YUM and RPM, File System Management and Security Administration. I am eager to contribute technical skills and grow professionally in a collaborative IT environment.
Overview
13
13
years of professional experience
3
3
Certification
Work History
Linux Systems Administrator
Leidos
11.2021 - Current
- Performed installation of Red hat Linux servers on Virtual and Physical Machines
- Configured network interfaces on VM with Hostname, IP and Gateway records
- Modified server configuration files to establish default run levels based on system requirements
- Configured and deployed various Linux Distributions such as Red hat, Centos, Ubuntu, Fedora
- Managed File Systems and Users on Red Hat Enterprise Linux 8 & 9 platforms
- Assisted with analyzing, developing, and designing server and application support solutions
- Participate in the security definition, design review, integration, and testing during system / software development
- Perform security risk assessment, develop security risk mitigation recommendations, and identify security controls for systems, applications, and networks
- Conducted network security audits that include validation of current network security policy, requirements, design, comparative analysis, and assessment of the information assurance architecture
- Identify various security risks, threats, vulnerabilities, and new technology initiatives. I used Access Control Lists to manage permissions on files and directories
- I managed users and groups in a RHEL enterprise network
- Used Remote Desktop and Virtual Private Network Appliances for Server Configuration
- Performed Security Administration on Linux systems
- Configured, setup and provisioned Servers for package Management functions
- Used ansible to assist with automation
- Troubleshoot system issues and provide solutions
- Collaborate with the technical team to ensure a stable operating system
- Disaster recovery
- Container Configuration
- Managed and maintained over 100 RHEL and CentOS servers in production environments
- Integrated RHEL clients with FREEIPA and configured secure authentication via Kerberos
Linux Administrator
Deloitte
02.2015 - 11.2021
- Implemented SSH version - 2 to secure communications between servers
- Experience configuring Linux guests in an Oracle Virtualbox Manager environment
- File transfer with NFS, Autofs, FTP, SSH etc.
- Encryption of files with gpg for security protection.
- Experience with Role Based Access Control Security Administration
- Performance Monitoring and capacity planning on Linux and Windows Servers
- Compression and Decompression of files and performed Backup and Recovery.
- Maintained data files and Monitor system configuration to ensure data integrity.
- Installed, configured and managed software.
- Performed Network configuration and troubleshooting of network access for servers and clients.
- Managed system processes and installed services.
- Provide backup and recovery services; manage disk space
- Scheduled jobs with cron job to automate task at certain times.
- Jira & Confluence were used to have us on 2-week sprints.
Junior Linux Administrator
PGCC
10.2012 - 02.2015
- Performed installation of computer programs
- Gained hands-on experience with basic ansible playbooks
- Managed User and groups in RHEL enterprise network
- Conduct network security audits that include validation of current network security policy.
- Performed Schedule Systems management
- Maintained Staff administration systems
- Create and manage backups using tar, rsync and scp
- Troubleshooting network issues
- File & Directory management
- User & Permission management
- Apply patches
Education
Bachelor of Science degree -
West Virginia State University
Associate degree - undefined
Prince Georges community College
Skills
- Red Hat Enterprise Linux
- Network Configuration
- Troubleshooting
- System Processes Management
- Hardware RAID
- Backup and Recovery
- Data Integrity
- RAID Controllers
- Vulnerability Assessment
- Risk Assessment
- Patch Management
- Security Scanning
- Authentication
- Access Control
- System Support
- Systems Monitoring
- Compliance
- Network Security
- System Security
- STIGS
- Virtualization
- Active Directory
- SAN Storage
- Ansible
- System Management
- CI/CD
- GitLab
- Linux
- Oracle VirtualBox
- SSH
- FTP
- Apache
- Nagios
- LVM
- Microsoft Windows
- Kick Start
- Server Provisioning
- User Provisioning
- Server management
- System maintenance
- Disk space optimization
- System monitoring
- User and group management
- Web server administration
- Cron job scheduling
- Software installation
- Task automation
- Configuration management
- Package management
- System performance tuning
- Nagios monitoring software
- Workstation onboarding
- Firewall configuration
- System upgrades
Certification
- RHCSA
- RHCE
- Comptia Security+
Timeline
Linux Systems Administrator
Leidos
11.2021 - Current
Linux Administrator
Deloitte
02.2015 - 11.2021
Junior Linux Administrator
PGCC
10.2012 - 02.2015
Associate degree - undefined
Prince Georges community College
Bachelor of Science degree -
West Virginia State University
Other Technical Skills
Software and Operating Systems: Linux, Oracle VirtualBox, SSH, FTP, Apache web server, Nagios, LVM, Red hat Enterprise Linux 8 & 9, Microsoft Windows, Backup and Recovery, Server and User Provisioning
Clearance
Active Top Secret Clearance
Personal Information
Title: Senior Linux Systems Administrator