System Administrator Red Hat

Name: Masood Mehdi

Email: *************@*****.***

Professional Summary

Overall 8+ experience as Linux/UNIX system administrator on Red Hat EL 5. x, 6. x, 7X Centos 5x, Solaris 8, 9, 10 and VMware ESX environment.

Extensive experience with RAID using Volume Management Software like Logical Volume Manager Veritas Volume Manager, and Solaris Volume Manager.

Comprehensive experience in the design and implementation of CI/CD and DevOps Operations for Agile projects, working with technologies and platforms including UNIX/Linux, Java, Subversion, Maven, Jenkins, VMware, AWS, Azur, Bitbucket, Ansible, Git, Docker Swarm, Chef, Puppet, Docker, Tomcat, Selenium, Nagios.

Expertise in implementation and maintenance of NFS, NIS, DNS, and LDAP name services.

Experience in installing DB2 software, creating instances, databases, and configuration management on DB2 servers.

Experience in DB2 Linux System/Application DBA skills including HADR, setting up cronjobs for monitoring disk space, memory utilization, watchdog, etc.

Experience in using AWS EC2, S3, AWS Route 53, AWS Cloud Trail, AWS Cloud Watch, AWS Glacier, AWS Identity and Access Management, AWS Elastic Load Balancers (ELB), AWS Cloud Formation and Terraform.

Experience in networking concepts like DHCP, TCP/IP, IP Addressing, Networking Technologies, and WLAN.

Experience in installation and configuration of Apache 1.3.x, Tomcat, WebLogic 9, 10, and JBoss.

Extensive experience in Linux performance monitoring by using top load balancing, security setup, and troubleshooting.

Experience in networking concepts like DHCP, TCP/IP, IP Addressing, Networking Technologies, and WLAN.

Main focus on RedHat Linux 5.1, 6.1, AIX V5, V6, V7 p Series IBM Power p6, p7, SUN Solaris 9, 10 Zones/Containers.

Experience in planning, installation, migration, upgrade OS AIX, Solaris, Linux, deployment, and Production Support.

Excellent understanding of ITIL v3 and experience with the creation of runbooks.

Worked with Nexus repository manager to proxy, collect, and manage the dependencies on the collection of JARs.

Established infrastructure and service monitoring using Prometheus and Grafana.

Extensive experience in Installation, configuration, and administration of AIX 4.3/5.1/5.2/5.3 /6.1, Red Hat Linux 8/9, RHEL 3.x/4.x/5.x, Red Hat Satellite 6, OEL 4/5.x and SUSE Linux 10.x/11 and day-to-day system admin tasks.

Implemented multiple/CD pipelines as part of DevOps role for on-premises and cloud-based software using Jenkins, Chef, and AWS/Docker.

Experience in migration of On-Premises RHEL and Windows servers to cloud platforms including AWS EC2 and Azure.

Experience working with Red Hat GFS and VERITAS Cluster File systems

Experience in administration and maintenance of application services like DNS, DHCP, FTP, LDAP, and NFS.

Experienced in installation of Operating Systems, Packages, and Patches, adding Peripherals, maintaining user accounts, System Security, backup/recovery, performance tuning, and troubleshooting at various levels.

Strong analytical, diagnostics, and troubleshooting skills to consistently deliver productive solutions, wif debugging an operating system issue in a Linux system.

Experience in setting up Amazon EC2 cloud instances Amazon Images (Linux/Ubuntu), and Configured Inbound/Outbound in AWS security groups.

Expert in Server Builds, Installs, Upgrades, Patches, Configuration, and Performance Tuning in Red Hat Linux/Windows Server 2003/2008 on VMware virtualized environments.

Expertise in Systems Administration, Data Center Migration, Server Deployment, and production support with automation and scripting.

Worked with tools like Net cool, Nagios, Zabbix, and Solar Winds for performance monitoring and checking the health status of the servers.

Experienced in Automating, Configuring, and deploying instances on AWS, Azure, and Rackspace cloud environments and Data centers, also familiar with EC2, CloudWatch, Elastic Search, and managing security groups on AWS.

Experience in Creation and managing user accounts, security, rights, disk space, and process monitoring in Solaris and Red Hat Linux.

Experience in Package Management using Red Hat RPM/YUM and Red Hat Satellite server and Linux.

Worked in container-based technologies like Docker, Kubernetes and OpenShift

Operating Systems

Linux RedHat SUSE, Solaris 10/9/8, HP-UX 11.0, 11.11, 11.23, 11.31, IBM AIX 4.3/5.x, SLES 8,9,10 11, Windows NT /2000/2003.

Networking:

TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP.

Version Control Tools

GIT, SVN, TFS.

Web/Application Servers

Web Logic, Apache Tomcat, Web Sphere and JBOSS, IIS

Configuration Tools

Chef, Puppet, and Ansible.

Scripting

Perl, Bash

Virtualization

VMware ESX 4.x, ESXi 5.x/6.x, AWS (EC2, S3, IAM, Route 53, SNS, SQS, VPC, etc.)

Public & Private Cloud Technologies

Microsoft Azure,

CI/CD Tools

Jenkins, GitLab

Performing/Monitoring & Bug Tracking Tools

ELK, Nagios, CloudWatch, Azure Monitor, New Relic, Splunk, Grafana, Prometheus, Confluence, Jira. VMware ESXI, Vagrant, KVM, Windows

Databases

Dynamo DB, MySQL, RDBMS, NoSQL, Cassandra, PostgreSQL, Mongo DB, Oracle DB

TECHNICAL SKILLS

PROJECT SUMMARY

Cotiviti - Atlanta, GA Jun’22 - Present

Sr. Linux Engineer/Administrator

Responsibilities:

Implemented a Continuous Delivery pipeline with Docker, Jenkins, GitHub, and AWS AMI's

Cloud and system virtualization platforms and tools (AWS, Ansible, Hyper-V, VMWare, Virtual Box, Docker, Vagrant, Terraform)

Expertise in setting up Docker Host, Docker Registry, RHEL/ Centos Atomic Host, and Docker images (Centos, RHEL and Ubuntu instances)

Configuration and deployment of Nagios Monitoring system for managing all the Linux warehouse systems.

Worked in HPSM to perform different responsibilities like debugging, troubleshooting issues, error analysis, recovery, documentation, and procedures required for reference.

Managed file systems, including LVM and LVM extension/reduction on RHEL/UNIX platforms.

Parsed and analyzed log files using Perl, and assisted customers with operational responsibility for Confidential, vScale, VxRail, and VxRack environments.

Provided support for incidents, tickets, and change requests related to RHEL5/6/7 and UNIX issues.

Installed and configured RHEL on HP DL385-DL585 servers and worked with Linux variants (RHEL, CentOS, Ubuntu).

Launched and configured Amazon EC2 (AWS) Cloud Servers using Linux AMIs and configured servers for specific applications.

Involved in creating highly available and scalable infrastructure in the AWS cloud by using various AWS services like EC2, VPC, Auto scaling, ELB, RDS, etc.

Configured AWS IAM (Identity Access Management) service for controlled access for regular and application users with various groups & and IAM policies.

Responsible for upgrades to Redhat Linux wif software packages, patches, and updated kernel on RHEL 5. x,6.2, and 6.5 servers using RPM, and YUM and maintained them by established policies, procedures, and service level agreements.

Installation, configuration and upgrade of Redhat Linux 3/4/5/6, Oracle Linux 5/6 Cent OS5.7 operating systems.

Administration, Installation, Configuration, troubleshooting, and Performance tuning of Linux distributions such as Red Hat Enterprise Linux, CentOS, and OEL.

Managed different on-premises infrastructure resources including Cisco UCS, HP C7000, VMs, and even Docker containers and different Cloud service providers like AWS and Azure.

Experience in creating Docker Images and Kubernetes container platforms.

Implemented continuous integration and build tools using Ant, Jenkins, Chef, and Puppet for full automation.

Upgraded Red Hat IDM, applied patches, and managed source code repositories using Bitbucket.

Developed and maintained core components of a large-scale financial application using C++.

Designed custom Visual Basic applications for real-time POS updates and reports.

Installed, configured, and maintained Debian/RedHat Servers at multiple data centers.

Configured RedHat Kickstart for installing multiple production servers and implemented Disaster Recovery using EMC Networker and NAS.

Administration, Installation, Configuration, troubleshooting, and Performance tuning of Linux distributions such as Red Hat Enterprise Linux, SUSE Linux Enterprises, Fedora and Solaris 8/9/10; IBM AIX 5.2/5.3/6.1, Windows Servers.

Installation, configuration, and upgrades on Red Hat Linux 4. x, 5. x; Responsible for upgrading Critical patches and development, pre-production, and production environment systems as Linux distributor server.

Real-time hands-on experience on SVN Adm (Master) server, dealing with wif check-in configuration and promoting the change in Puppet server.

Worked on Azure cloud services, Azure storage, Azure active directory. Create and manage Azure AD tenants and configure application integration with Azure AD.

Deployed ASP.NET web Application in Azure using Web App service, connected it to Azure SQL Database and used VSTS to provide CI/CD pipeline.

RedHat Enterprise Linux installation of virtual and physical servers (RHEL 6, 7,8) Unix, Windows.

Worked and Deployed Ansible and Ansible-tower in the big data platform.

Used Ansible and Ansible Tower as configuration management tools, to automate repetitive tasks, and quickly deploy critical applications.

Developed ansible playbooks to actively administer the OpenShift clusters. Installed Ansible tower and scheduled automated jobs for Ansible playbooks

Worked on OS maintenance activities like upgrading the OS, and updating the services and third-party software.

Worked in maintaining the integrity of Linux, and Solaris servers by performing patching operations in a regular and planned way.

installation, configuration, tuning, security, backup, recovery, and upgrades of IBM AIX on P-series servers.

Installation and configuration of Web Application servers like Apache, Tomcat, and WebLogic.

Implemented and managed Ansible Tower to scale automation and handle complex deployments. Set up pipelines for nightly builds enabling, Build, Sonar, etc.

Worked with LINUX/Operating system with a strong understanding of server backup, also worked with vulnerability scanning and threat mitigation technologies

Used Docker in Environment variables, Configuration files, Option types, and Strings & and integers.

Worked on Linux systems, virtualization in a large-scale environment, and experience with Linux Containers (LXC) and Docker.

Worked on Container Orchestration tools like Docker & and Kubernetes, in in-order to build docker images from docker files and run the containers in the docker engine, whereas these clusters are securely managed by Kubernetes.

Configuring ‘nginx’ for proxy RESTful API calls to micro-services in Docker containers.

Designed and Developed Bamboo Builds deployments on Docker containers.

Worked on Updating ESX hosts using VMware Update Manager.

Expand Red Hat OpenShift Container Platform solution to multiple CPU architectures

Used the JIRA, and Confluence for bug tracking, creating the dashboard for issues.

Managing and optimizing the Continuous Integration using Jenkins, and Bamboo and troubleshooting the deployment build issues using the trigged logs.

Automated OpenStack and AWS deployment using Cloud Formation, Ansible, Chef, and Terraform.

Windstream - Palm Harbor, FL Jul’20 - May’22

LINUX SYSTEM ADMINISTRATOR

Responsibilities:

Worked on installing, upgrading and configuration redhat Linux 6.x,7.x, Ubuntu, and CentOS, suse, windows

Designed, built, configured, and troubleshot, Linux (redhat enterprise), Unix, Ubuntu, and CentOS

Worked with AIX OS standards and Security remediation. WebSphere application installation.

Create continuous service improvement plans for VMware & and Linux environments & and implement them.

Managing the OpenShift cluster including scaling up and down the AWS app nodes.

Had very strong exposure using ansible automation in replacing the different components of OpenShift like ECTD, MASTER, APP, INFRA, and Gluster.

Extensive working experience in setting up WebLogic cluster environment, including WebLogic Domains, Admin Servers, Managed Servers, and Node Manager.

Implemented AWS solutions using EC2, S3, RDS, EBS, Elastic Load Balancer, Auto scaling groups and Cloud Formation Templates.

Created Python scripts for backups, and utilized Perl for text processing, data manipulation, and regex.

Worked on the Provisioned load balancer, auto-scaling group, and launch configuration for microservices using Ansible.

Implemented Ansible to manage all existing servers and automate the build/configuration of new servers.

RedHat Enterprise Linux installation of virtual and physical servers [RedHat 2012,2016,2019 and 2022, Linux, Unix, Windows].

Automated the provisioning of Azure Cloud using ARM Templates, AWS Cloud using Cloud Formation, and also using Terraform.

Worked on Microsoft Azure offerings such as Azure VM, Azure Resource Manager, Load Balancer, Azure Networks, Azure Site Recovery, Azure AD & ARM template, and Azure VNets.

Worked with deployments of various systems to Azure with Azure CLI, PowerShell, ARM Templates, and Terraform

Deployed OpenStack infrastructure with automation and configured management tools such as Ansible, and Puppet Puppet-hosted applications and used Ansible for Continuous integration.

Utilized Kubernetes and Docker for the runtime Environment of the CI/CD system to build, test Deploy

Involved in the development of a test environment on Docker containers and configuring the Docker containers using Kubernetes.

Migrated the on-premises workloads to Azure cloud based on the requirement.

Design and deploy Azure Backup and other Confidential backup solutions for Azure

Strong design and live migration experience from on-premises to Azure IaaS & PaaS.

Installation, configuration, administration, troubleshooting, tuning, security, backup and recovery and upgrades of IBM AIX

Worked on various issues with physical hosts in a VMware cluster.

Worked on DevOps concepts Continuous Integration (CI), Continuous delivery (CD), and Infrastructure as Code, Cloud Computing, etc.

Migrated a few Cloud formation templates to Terraform by using various AWS modules and Secured the Terraform state file in S3 buckets. Used Terraform Plan to meticulously detect and analyze the changes that will be inflicted after Terraform Apply.

Designed, wrote, and built deployment using Ant/ Shell scripting and automated overall process using Subversion and Ansible.

Worked on creating modules, and manifests in Puppet using Ruby and automated various administrative tasks by creating modules and manifests on multiple servers using Puppet.

Worked with the Azure logic apps with different triggers and worked on the ISE environment in logic apps.

Worked on Azure data factory with different triggers and on the Azure Storage accounts.

Worked on developing APIs using Kubernetes to manage and specify the copies of the containers to run the actual servers in the cloud environment.

Worked on Automating the application deployment inside the software container using Docker

Created git repos and Jenkins jobs for the build and deployment of Microservices in Docker Container

Created Docker file for building Docker Image and also Created script to build and push docker images in Docker Hub.

Created docker-compose. Yarn! file templates to deploy images in docker containers managed by Docker Swarm

Created Kubernetes YAML file for the deployment in Kubernetes Cluster

Implemented a CI/CD pipeline using Azure DevOps (VSTS/TFS) in both cloud and on-premises with GIT, MS Build, Docker, and Maven along with Jenkins

Working knowledge of repository tools such as GIT, Bitbucket, and GitHub.

Worked on configuring webhooks in Bitbucket to trigger automated builds in Jenkins

Worked on managing Ansible Playbooks with Ansible roles and created inventory in Ansible for automating the continuous deployment.

Johnson & Johnson - Birmingham, AL Sep’18 – Jun’20

Linux System Administrator

Responsibilities:

Installed and managed Linux systems, exhibiting proficiency in Linux-based operating systems, commands, and utilities.

Implemented secure Linux server and software installations, maintenance, and upgrades adhering to company security standards.

Troubleshooting Apache issues such as performance testing and tuning i.e., worker, pre-fork, mpm configuration, failure of Apache to restart, queuing of requests, etc.

Red Hat Linux server administrator, including security patching, kernel tuning, RAID disk array mgmt., software packaging, and installation using RPMs.

Perl and shell scripts to collect and summarize server information for server monitoring improvement project.

Using Puppet for pushing server configuration across distributed virtual server environments. Performance enhancement and tuning for Tomcat, Apache, and JBoss servers on RHEL6 OS virtual instances. Writing Build and Build deployment scripts.

Installing and Managing Virtual Center 5.5. Upgrading from VMware ESX server from 3.5.0, 4.0.0, and 5.0 in the environment.

Install and configure the hardware agents on the ESX servers for Hardware monitoring and alerts SNMP Open Manager.

Automated software installations and updates on Linux servers with Perl, tuned and modified SQL and PL/SQL code for performance improvement.

Proficient in planning, installing, configuring, maintaining, and administrating Linux (Red Hat 5,6,7,8,9) and AIX 5.3, 6.1, 7.1, handling day-to-day system engineering tasks.

Proficient in patching and OS pathing upgrades on RHEL 5, 6,7,8, and 9, creating VM templates, and providing support for hardware and software issues.

Managed VMware ESX 5.5 hosts, consolidating disks and storage configurations, and creating volume snapshots based on requirements for RHEL 5, 6, 7, 8, and 9 versions.

Established standards, policies, and procedures for all aspects of the UNIX and Linux server environment, including configuration, administration, documentation, and security tools.

Managed daily incidental changes (INCs) and addressed issues in alignment with open changes in ServiceNow, planning and implementing them on weekdays and weekends as needed.

Proficient in various transport, application, and internet protocols, including GGP, DHCP, DNS, FTP, HTTP, IMAP, POP3, RPC, SMTP, SOAP, SSH, Telnet, TLS/SSL, and both IPv4 and IPv6 within the TCP/IP suite.

Managed Linux HA cluster nodes, handling installation, configuration, administration, and troubleshooting.

Installed and configured Apache web servers (2.x, 1.3.x, 1.2), JBoss (4.0.x), and BEA WebLogic servers (8.x, 9.x)

Configured Red Hat Network Satellite Server for automated Linux installation and created Linux system images using System Imager for streamlined installations.

Hands-on experience in Red Hat Linux Performance Monitoring tools using vmstat, iostat, prstat, mpstat, sar & top

Built Linux OS virtual machines (Red Hat OS) manually installation and configuration as per company requirements

Experience in ESX reboots, upgrades, and client servers Red hat installation and HA configuration

Worked in installing, and updating packages in Red Hat Linux servers using RPM’s and YUM repositories from GitHub for app teams

Expert with SMIT, LVM (Logical Volume Manager), Mirroring, User and System Resource Management, Paging Space management, and job scheduling. Familiar with File System, Volume Manager, GPS and Cluster Servers

Configured various SNMP-based configurations to allow solar winds to analyze CPU, Memory Network, and I/O usage

Worked with the installation and configuration on Apache 2.x, 1.3.x, and 1.2, JBoss4.0.x Webservers and, BEA Web Logic 8.x, 9.x servers

Worked on ESX reboots, upgrades, and client servers Red Hat installation and HA configuration

Experience with the following technologies: Splunk, Ping Access, AppDynamics, Sitescope, Big IP/LTM, IaaS logging/reporting, ActiveMQ, and Data Transmission Serves (DTS).

Worked in working with VMware ESX servers for enterprise-level virtualization

Perform build Linux servers from VMware templates and update them according to client configuration.

Barclays - North, SC Oct’16 – Aug’18

Sr Linux Engineer/Admin

Responsibilities:

Monitors system health and configurations to ensure system health and functionality as well as remediate problems/issues promptly.

Configured and administered Red Hat Linux security and performed benchmark and security remediation. DISA STIG Scripts to harden a system to the RHEL 7 STIG.

Perform daily system checks, review and respond to events reflected in various management and monitoring tools

Migrating existing on-premise Web applications and services to AWS.

Create the Block Volumes or File Storage as per user requirement. Extend the Volume if needed.

Monitor the performance and availability of the applications on the AWS platform using CloudWatch and CloudTrail.

Use AWS Cloud Formation to automate infrastructure provisioning and deployment to reduce time to production.

Automate snapshots and backups based on use cases using Amazon Data Lifecycle Manager and AWS Backup.

Implement automated patch management using AWS Systems Manager Patch Manager.

Provision, configure, and manage AWS resources with Ansible Core and Tower

Install new systems and rebuild existing systems. Collaborate with application owners and business partners.

Perform after-hours system and configuration changes and maintenance.

Troubleshoot issues in production, test, and development environments.

Work on incoming tickets and requests.

Provided ongoing support for the administration of DADS Red Hat Enterprise Linux (RHEL) Servers, which included new hardware installation, advanced system configuration, operating systems installations and upgrades, and maintenance of the Red Hat clustering suite.

Implemented Network Interface bonding on all RHEL servers to provide network redundancy.

Configured and administered Red Hat Linux security and performed benchmark and security remediation. DISA STIG Scripts to harden a system to the RHEL 6 STIG.

Installed, configured, and maintained services such as Apache-Tomcat, Nginx, MySQL, and OS-level services.

Installed and configured Red Hat Enterprise Virtualization Hypervisors for use with RHEVM. Defined networks for the

Storage devices and add them to the hosts. Defined NFS, iSCSI, or FCP storage and attached to the data center

Installed and configured OpenLDAP to implement a centralized authentication system, including user authentication, group information, and automatic mounting of home directories with automount maps.

Install and configure EC2 servers (Linux) and related components for development, QA, UAT, and production environments using Ansible.

Install and configure VMWare ESXi-6 servers. Administer them with VMWare vSphere client to create and allocate resources to guests.

Provision, configure, and manage AWS resources with Ansible.

Migrating existing on-premise Web applications and services to AWS

Manage the allocation and configuration of common Amazon Services (i.e., EIPs, ELBs, Cloud Formation, Cloud Front, and so on)

Provided ongoing support for the administration of DADS Red Hat Enterprise Linux (RHEL) Servers, which included new hardware installation, advanced system configuration, operating systems installations and upgrades, and maintenance of the Red Hat clustering suite.

Pfizer - Nashville, TN Aug’14 – Sep’16 Linux System Admin/Engineer

Responsibilities:

Handled Linux kernel and memory upgrades, configured swap areas, and conducted Red Hat Linux Kickstart Installations. Configured DNS, DHCP, NIS, NFS, and other network services in Red Hat Linux.

Executed installation, configuration, and maintenance tasks for Red Hat Linux 5.3.

Managed HP and DELL servers operating on Red Hat Linux, SUSE Linux 9, and GNU.

Conducted daily backups and data restorations as per developer requests using Veritas NetBackup.

Proficient in server consolidation and virtualization using HPSA vSphere virtual infrastructure and HPSA vSphere ESX.

Utilized the ELK Stack (Elastic Search, Logstash, and Kibana) for monitoring.

Deployed and managed configurations using Ansible and OpenShift.

Possesses knowledge of IaaS/PaaS technologies and cloud computing platforms, preferably OpenStack, VMware, OpenShift, and AWS.

Expertise in troubleshooting Openstack issues from f ault detection, fault isolation and resolving many key issues.

Upgrading Openstack requirements from Juno, Kilo to Liberty and Liberty to Mitaka versions.

Configuring the Openstack components keystone, glance, neutron, cinder, swift, Heat and ceilometer.

Experienced in virtualization and container technologies such as AWS, Azure, Docker, and OpenShift.

Developed Shell Scripts for cron jobs and deployment purposes using the VIM editor.

Provided security measures and resolved network issues for an environment with 2500 users with VPN access.

Installed required software, and patches, and troubleshooted licensing issues.

Configured user profiles, environment variables, and security measures to ensure smooth operations.

Possesses a good understanding of web services software architectural and design principles.

Monitored system performance, managed user accounts, conducted system updates, and managed disk storage.

Created deployment models for Cloud Foundry, explaining the underlying VM, container, and application layout across multiple PCF foundations globally.

Managed user permissions, created users, and maintained User File System quota on Red Hat Linux and AIX.

Provided production support for Apache and JBoss, including installation, configuration, management, and troubleshooting.

Implemented RAID 1 and RAID 5 on mission-critical servers such as domain controllers and file servers.

Configured full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, kickstart, and print servers to ensure optimal functionality.

Installed and configured Sudo for users to access root privileges.

Conducted troubleshooting of CPU and memory bottlenecks, providing suggestions for performance improvements. Analyzed performance issues through PERFPMR.

Authored technical documentation for various projects and collaborated with technical writers to finalize documents.

Batchelor’s In Computer Science from Osmania university in 2013

EDUCATION

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