ADNAN SADIQ

Linux System Engineer

810-***-**** admnbn@r.postjobfree.com

BRIEF BACKGROUND:

A multi-talented, dynamic, professional Linux Engineer possessing more than 5 years of experience having deep exposure in virtualization, orchestration, automation, version control, monitoring and management. Having insight in various Operating Systems such as Red Hat / CentOS 6 and 7 with respect to installation, configuration, services and patching of packages. Expert in networking, user management, file management, disk and storage management, performance management and troubleshooting. Exposure to automation DevOps tool like Git, Docker, Kubernetes, CI/CD pipeline and Jenkins.

TECHNICAL CAPABILITIES:

Operating Systems: Experienced with Linux family (Red Hat Enterprise Server, CentOS, VMware)

DevOps/Automation: Ansible (playbooks, Roles/ Adhoc), Ansible Tower, GIT, Docker (containers), AWS (IAM, EC2, S3, ELB, EBS and Cloud formation templates), Jenkins, Bash Scripting.

VMware (ESXI, vCenter, vSphere), Ovf templates, HA, DRS, Heartbeat, Vmotion.

Monitoring Tools: Nagios, Cloud Watch, Top, Iostat, SAR and netstat.

Networking: TCP/UDP, DORA, Static IP address, troubleshoot, Traceroute, Wireshark.

Servers: NFS, PXE, Apache, HTTP, DNS, DHCP, TFTP, FTP,

User Management: Active Directory

Storage: SAN, NAS, RAID, LVM, SWAP

CAREER HISTORY

JUN 2018 – Present Verizon Wireless, Basking Ridge,NJ Linux System Engineer

Managing Amazon Web Services (AWS)provisioning and good knowledge of AWS services like EC2, S3, ELB (Elastic Load Balancers), IAM (Identity Access and Management), Cloud Watch, EBS (Elastic Based Storage).

Experience in creating Amazon EC2 instances and work closely with infrastructure teams to troubleshoot complex issues and setting up security groups.

Set up AWS CloudWatch for continuous monitoring of EC2 instances and AWS resources (CPU, HD, Load on system) to manage infrastructure integrity.

Using Ansible playbooks to automate day to day task using service, gather facts, copy, conditions, handlers, notify, and various other modules and Ad hoc commands.

Manage ansible role through ansible galaxy.

Knowledgeable in patched the Linux server with help of Ansible and Red Hat Satellite.

Experience using Ansible Tower which provide an easy-to-use dashboard with GUI interface so that it is easier to allow individual teams access to use Ansible for their deployments.

Responsible for sharing documentation privately and publicly within the environment side by side taking care of version-controlled environment using GIT.

Shared data with different teams of environment using GIT HUB, managed Git Repositories on GUI and CLI.

Managing DOCKER ecosystem including Docker server, Docker client, Docker file, Docker image, Docker Compose and Docker prune.

Attending container-based deployments using Docker, working with Docker images, Docker hub and Docker registries, installation and configuration of Kubernetes and clustering them.

Used Nagios as IT infrastructure monitoring tool for monitoring host resources such as processor load, disk usage, system logs, monitoring applications, services, and network protocols.

Experienced in Virtual Machines provisioning, deploying, and configuring all utilities VCenter, Ovf templates, Golden image, Cluster, HA, vMotion, Clone, Snapshots, DRS, Heartbeat.

Monitored the performance of the system using Top, Sar, vmstat, netstat and iostat to check the CPU utilization, bottlenecks of I/O devices, memory usage and network traffic.

Configured and managed physical volumes, volume groups, and logical volumes, in addition extended, reduced, PVS, VGS, and LVS for file system growth needs using LVM commands.

Troubleshoot memory related issue of creation swab, addition of swab space and make it boot persistent.

Examine system Log Files of all system report.

Mar 2016 – Mar 2018 Cisco - San Francisco, CA Linux Administrator

Administrating server infrastructure consisting of 1000+ virtualized servers running on Vsphere, VMware ESXi host with HA.

Performed automated installations of Rhel6,7 in PXE using Kickstart.

Operate running Linux systems (CentOS, Red Hat), including booting into different run levels, identifying processes, starting, and stopping virtual machines and controlling services.

Scheduling and managing jobs, patches, and configuration files with Red Hat Satellite Server.

Performed trouble shooting in KERNEL PANIC issues, bringing servers up when patched, fine-tuned, and upgraded.

Worked on various servers such DNS, DHCP, FTP, NFS, HTTP & Apache and provided support for them.

Configured NFS server and client for sharing files and directories over the network.

Created mount points for Server directories and mounted these directories with Autofs as well as in Etc/Fstab to make boot persistence.

Established and Managed the NIC-bonding on new builds for fault-tolerance, load-balance, and redundancy.

Implementing various RAID levels. Implementing the RAID (0, 1, 5, 6, 10) based on the customers priorities related to performance, and redundancy.

Performed BASH scripts for automated tasks.

Management of Linux user accounts, groups, directories, and file permissions.

Solidifying of security using SETUID (user), GETGID (group), STICKY BIT and ACL (Access control list).

Taking care of user Management, including privileges, and troubleshooting all their issues.

Responsible for setting CRON jobs to schedule various tasks.

Solid understanding of TCP/IP networking concepts, layer and practices.

Managed SSH, generating SSH keys and providing machines service to SSH into one another without authentication. SSH troubleshooting skills.

Jan 2015 – Feb 2016 Miracle Technology N.Y.C IT Analyst

Mainly responsible for keeping the servers up and running as well as providing direct user support for any technical issues related to systems.

Supported in the efficient daily operation of the computer systems division.

Monitoring and handling daily jobs that are determined by a system.

Deployed new equipment and install applications and different software.

Maintaining and troubleshooting any breakdowns of operations.

Responding to incoming calls, mail from internal and external user regarding computer issue and problems.

Maintaining and supplying inventory by daily checking stock levels to determine the stock level.

Worked in collaboration with various teams to prepare and configure new servers.

Keep watch on system security, disk space and process monitoring.

Delivered technical support by troubleshooting day-to-day issues with various Servers on different platforms.

EDUCATION:

BS (HONS) BUSINESS (2012)

FORMAN CHRISTIAN COLLEGE (A CHARTERED UNIVERSITY)

Lahore, Pakistan

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