Linux System Administrator

• Virtualization (VMware Esxi 6 and Oracle Virtual Box) 
• Builds, Install, configure over 500 virtual and physical servers, test, deploy RHEL 6,7,8, CentOS 
6,7,8 servers using standard and kickstart method 
• Build and configure Linux cluster for high availability 
• Perform Linux kernel update and upgrade 
• Build install and deploy Linux 6,7,8 server into the network 
• Experience in NIC management, Port Bonding configuration 
• User, Group and Security management in Linux, ACL 
• Role based access using SUDO in Linux 
• Configure RAID (0,1,5) on Centos/RHEL67 using lvm 
• Disk management experience in Linux. 
• Swap management in Linux 
• LVM volume management experience in Linux 6/7and on RHEL8 in AWS cloud 
• Firewall and SELINUX Management on RHEL/Centos 7,8 and IP tables in RHEL/Centos 6 
• Process management in Linux 
• Create and scheduled Cron Jobs for automation 
• Performed incremental or full backup using TAR or RSYNC tools across Linux servers. 
• Reduced risk and vulnerabilities by hardening Linux system and configure password aging 
• Writes solid bash shell scripts to perform system backup, deploy applications, extend root file 
system, automate system processes and more 
• Configured Access Control List, setuid /setgid /stickybit on Linux systems. 
• Created local repositories for Linux 6/7 servers and performed software upgrades utilizing local 
repositories packages 
• Package management and patching of Linux system 
• Install and Configure Ansible Servers on RHEL7/CENTOS7 for automation and configuration management. 
• Add Ansible client systems to various inventory groups in the ansible hosts files as well as push the public ssh key from the ansible host to the ansible client systems. 
• Configure modules and playbooks to push out sets of configurations and tasks to numerous 
Local and EC2 Cloud systems from the ansible server. For example build modules to create 
User Accounts and install and configure Apache HTTP. Also write playbooks to deploy 
packages, including Apache Tomcat to numerous local LAN and AWS EC2 systems 
• Use TCP/IP tools to troubleshoot and resolve network connectivity and DNS related issues to 
increase productivity and performance especially issues emanating from hardware and software. 
• Apache version 2 installation and configuration in Linux 
• Build and configure LAMP server on RHEL/Centos7 for hosting website 
• Migrate the mariadb directory from it default location to a secure lvm file system 
• Experience in setting up a hybrid cloud environment on the AWS cloud. 
• Responsible for spinning up RHEL8 and Windows Server 2019 EC2 instances in the cloud. 
• Install and configure samba file server on the RHEL8 AWS EC2 instances, as well as configuring File and print sharing on the Windows server 2019 EC2 instances. 
• Map network drives from local Windows 10 NOS systems to the RHEL8 EC2 Samba shares 
as well as the Windows Server 2019 EC2 shares 
• Create and attach an AWS EBS volume to Ec2 Instances in the cloud. 
• Configure EBS volumes on EC2 instances create LVM volumes on RHEL8 EC2 instances 
• Install and configure a Splunk Indexer Server on RHEL8 AWS EC2 instance for centralized 
log management, as part of Trinitech DevOPS implementation. Configure splunk forwarder 
systems to push out logs to the splunk indexer server 
• Use Kubernetes for docker Container orchestration insuring high availability of applications 
Deploy, scale, monitor, secure and troubleshoot a kubernetes deployment 
• Install and configure a docker Server on a RHEL7 server for containerization management 
• Build and configure docker containers for application and OS deployment. Example Apache 
http, Nginx and CENTOS deployment 
• Migrate and configure docker containers on RHEL8 ec2 instance in the cloud for 
reinstallation 
• Installed and configure a LAN wide NAS (Free NAS) create LUNs and attached LUNs to Solaris 10 servers using iSCSi 
 
PROFESSIONAL EXPERIENCE 
• Use dcpromo to promote standard Windows 2008 servers to a domain controller. 
• Configure Windows NOS and Linux clients to join the domain. 
• Create and manage user accounts and group in active directory. 
• User and Security management in windows. 
• Group Policy management in Windows using the "gpmc.msc" tool 
• Configure file and print sharing on Windows NOS to enable resource sharing. 
• Windows 7, 8 and 10 NOS imaging, configurations and software deployment. 
• Configure RDP and gain access to a remote Windows NOS 7,8,10 system, Windows server 
• Supporting system users and troubleshooting system issues. Document solutions for future 
reference. 
• Participating in root-cause analysis of recurring issues, and security setup, Provide 24X7 
support in Production Testing and Development environments.