System Administrator Active Directory

Nasser Al Gahmi

Phone 929-***-**** ***************@*****.***

Linux system administrator/engineer

A seasoned professional with 7 years a solid technical background and hands-on experience designing, implementing and managing Linux/Unix servers. Experiences involve deploying, configuring, installing, maintaining Linux based servers. Strong ability to solve complex problems, absorb new information, troubleshoot system related issues and adapt to evolving circumstances. Experience in collaborating in a team environment and accomplishing company goals set by senior management and in dealing with high-level tasks. Working knowledge and experience with VMware, AWS, DOCKER and automation tools such as Ansible and bash scripting.

Technical skills:

Operating Systems: RHEL 6,7 CentOS 6,7, servers, Windows Servers 08/12/16/19

RedHat: RedHat Ansible Tower, RedHat Satellite 6

Storage: SAN, NFS, LVM, RAID

DevOps Tools: Ansible, Git

Cloud Technology: EC2, EFS, S3, Cloud Watch, Cloud Front, VPC, ECS, Route53, EBS, IAM

Version Control: Git, GitHub

Monitoring Tool: Nagios, Zabbix and Splunk

Ticketing: Service now, BMC Remedy

Database: RDS, SQL, oracle 8i,9i,10g and 11g

Languages: YAML, Bash, and python.

User Management: Active Director, NIS, Group policy

Servers: DNS, DHCP, TFTP, FTP, HTTP, NFS, NTP, Cron, PXE, SSH, YUM Repo, Apache, LDAP, Active Directory, Docker, ECS.

Virtualization: VMware

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Expertise:

A Linux /Windows System Administrator more than 7 years of experience in Information Technology.

Integrating different flavors of Linux and Windows in diverse heterogeneous environments.

Competent with RedHat, CentOS, deployed on Linux, and windows server with strong Networking skills, AWS services, performance tuning, scripting and automation.

Extensive experience in Linux/UNIX System Administration of RHEL 5.x/6.x/7.x and Windows Server2008, 2012 and 2016.

Experience in solving problems with users and client and walked them step by step to resolve issues.

Explain the problem for the clients and solve it in good manner to better understanding.

Proficient in installation and configuration of patches using RPM and YUM.

Expertise in installation of Packages and Patches in Linux using RedHat Satellite server.

Strong expertise in Systems Administration, Installation, Upgrading, Migration, Backups.

Experience in bash, shell and python scripting to automate our daily tasks.

Experienced working on VMware, ESX Server and P2V migration with vCenter converter.

Expertise in writing Ansible playbooks to manage the configurations of multiple servers.

Expertise in monitoring tools like Nagios and Log Management using tools like Splunk.

Proficiency in configuration management, writing automation.

Good analytical, problem solving, communication skills and have the ability to work either in a team or independently.

experience with vMotion Storage, High Availability (HA), Fault Tolerance (FT), DRS, Storage DRS, and Snapshots

Familiarity with networking concepts like OSI Model, TCP/IP, UDP, DHCP, ACL and DNS.

Responded to all LINUX systems problems 24x7 as a part of an on-call rotation and resolving issues promptly providing RCAs.

Professional Experience

DuPont, Wilmington, DE February 2018 –Present

Linux Systems Engineer

Responsibilities:

Provision, deploy, maintain, and troubleshoot RHEL 6 & 7 hosts across both VMware and physical servers.

Worked with VMware VSphere client and Vcenter to manage virtual machines.

Installed, upgraded and maintained Linux operating system.

Installing, configuring and troubleshooting RedHat Linux 6 and 7 servers on the VMware platform

Setup the PXEboot server with customized Kickstart files.

Modify and create python scripts to achieve our tasks.

Configured and managed physical volumes, volume groups, and logical volumes for better disk management.

Developed Ansible Playbooks and used Ansible for configuration management for application deployments.

Automated configuration management and deployments using Ansible playbooks

Creating roles and updating Playbooks to provision servers by using Ansible.

Worked on Ansible tower to integrated notifications and graphical inventory management, job scheduling.

Analyzed log files and deleted them as necessary to free up space on the servers.

Worked on AWS services like EC2, S3, ELB, EBS, Cloud watch, Cloud Front and IAM for instantiating, configuring and managing various Amazon images for server migration from physical servers into the cloud.

Installing and configuration windows servers 2016 such as Active directory, Group policy and windows deployment services.

Deploy EC2 instances with ELB attached to them to maximize performance.

Configured Docker container for automated testing purposes

Develop BASH, Shell scripts to automate various tasks and day-to-day administration.

Secured Linux systems through configuring iptables, firewall, and SELinux, along with disabling root login.

Decommission and migrate HP, VM, and Dell servers.

Installation and configuration of NFS, FTP, Samba and Nagios servers

Troubleshooting SSHD, network problems, and kernel panic

Created physical volumes, volume groups, LVM, and filesystems

New York City College of Technology, Brooklyn, N.Y, October 2014 -December 2017

Linux System Administrator

Responsibilities:

Worked with LVM to manage logical volumes such as creating, extending, reducing, and removing logical volumes.

Installed and configure packages through RPM and YUM package management.

Configured and manage NIC bonds to improve performance and add fault tolerance

Created/removed users and groups on Linux systems.

Ran, maintained and set-up scheduled work using Crontab

Updated information in files using the SED command.

Fetched information from files using the AWK command

Monitored the overall health of our servers and take necessary actions.

Configured, maintain, and troubleshoot network services such as NFS, SSH, DNS, and DHCP.

Installing and configure windows server.

Upgraded and configure system software that supports infrastructure applications.

Work closely with other staff as needed to achieve needed IT administration and support.

Reviewing system and application logs for troubleshooting.

Performed regular file archival and purge as necessary.

Upgraded, memory, and disk partitions as required.

Installed, upgraded and maintained Linux operating system.

Generated password-less SSH authentication utilizing SSH key pair and resolving issues surrounding SSH connections.

Built a local yum repository for package installation.

Managed multiple RAID levels such as 0,1,5,6 and 10.

Synchronized the time zone with the NTP server.

Created and mounted EXT4 and XFS file system.

Good managed for solve issues with users and good explaining the issues and resolve them.

Provided 24/7 available on-call support.

Education Profile:

Bachelor of Science: Computer Science 2008

University of Aden

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