Linux System Administrator
Resume:
Naveed Aslam
adcurh@r.postjobfree.com
Summary:
A Linux System Administrator with 6 years of experience in Linux OS administration and storage infrastructure supporting a mission-critical environment on development (dev), testing (QA), and production (prod) servers.
Proficiency in implementation and operational support of Linux servers and virtual environments through provisioning, patching, application deployment, storage management, troubleshooting related issues and automation with Ansible.
Deployed, configured, and maintained over 15,000+ Linux systems and Linux Servers such as Apache, Nginx, HTTP, HTTPS, MySQL, NFS, Samba, DNS, DHCP, FTP, VSFTPD, MySQL, PXE Boot.
Provided system deployment, administration, and troubleshooting and operational support to Linux based production and development servers.
Day-to-day hands-on work building, patching, and maintaining Linux systems in a mission-critical, bare metals and virtualized (VMware), environment using Red Hat Satellite.
Instrumental in the preparation and execution of server patching and upgrading 500+ RHEL servers.
Experienced with decommissioning (RHEL 5.x) systems and migrating 500+ servers from RHEL 5.x, 6.x, 7.x systems.
On-call 24x7 support in response to Linux systems incidents and root cause analysis to resolve the respective issues.
Deployed RHEL OS using scalable methods such as red hat satellite, yum, configuration manager.
Handled networking troubleshooting with LAN, WAN, Routers, and Gateway.
Responsible for Configuration Management in Linux RHEL 5.x, RHEL 6.x, and RHEL 7.x to secure command-line service on remote systems, using OpenSSH utility and configured various services such as DNS, HTTP, HTTPS, SMTP, FTP, Apache, PXE boot, Kickstart, etc.
Experienced in the deployment, upgrade, and maintenance of middleware such as Apache, MySQL Server, MYSQL and PHP for different applications.
Education:
Bachelor of Science in Biology, Brooklyn College Expected: Summer 2021
Technical Proficiencies:
Operating Systems: Red Hat Enterprise Linux 5.x, 6.x and 7.x, CentOS 6.x and 7.x
Virtualization Tools: VMware VMotion, vCenter, vSphere, vCenter Converter.
Configuration and Management: NFS, DNS, DHCP, FTP, Vsftpd, HTTP, HTTPS, Apache, Nginx, Samba, PXE boot, Kickstart, and MySQL.
User authentication: Active Directory, Open LDAP, Windows server 2012, Centrify, SSO.
Patching and Provisioning: Red Hat Satellite, Ansible.
Hardware Troubleshooting: Rack and Stack, Build servers, ILO, iDRAC, KVM. RAID.
Disk Storage Management: SAN, NAS, iSCSI, RAID, LVM, XFS, EXT4.
Environment Tools: BMC Remedy, Nagios, Zabbix, Ansible, Bash, Docker, Git, Github.
Amazon Web Services: AWS, IAM, EC2, EFS, EBS, S3, Route 53, CloudWatch, RDS, VPC.
Productivity Tools: Office 365, Outlook, Skype.
Professional Experience:
Bed, Bath and Beyond, Union, NJ
Linux System Administrator January 2017 - Present
Experienced in collaborating with different teams such as Networking, Database team, Application team, Storage team, Security team, and Datacenter team to resolve issues and provide end-user satisfaction.
Configured, deployed and provisioned Linux servers of various distributions such as RHEL and CentOS 5.x, 6.x and 7.x, respectively.
Provisioned and deployed Bare Metal and VM hosts utilizing PXE Boot Server integrated with customized Kickstart Files.
Decommissioned legacy Linux systems, RHEL 5.x, reaching End of Life (EOL) phase.
Integrated Version control system with Git to collaborate on Ansible playbooks and scripts, kickstart files and facilitate code check-ins, checkouts, and branching.
Implemented RAID configurations on server systems that best fit the users' requirements.
Provided on Call 24x7 remote support revolving around incidents ranging from P1 to P4 critical issues.
Responsible for incident management in response to ticket requests generated by BMC Remedy and resolution within defined SLA.
Conducted Root Cause Analysis (RCA), in conjunction with Splunk log analysis, to remediate and implement futureproofing measures from further critical incidents.
Performed Vulnerability Audit of Linus Systems and mitigated findings through server hardening as detailed in CIS RHEL Benchmark.
Automated the execution of Patching of Linux Servers to harden against security vulnerabilities by designing Ansible playbooks.
Coordinated with Dell, HP Vendor Support to rectify hardware malfunctions, maintain and renew licenses, and handle escalations.
Maintained the Docker environment by managing containers on host systems and monitored the docker daemon.
Spun up and configured AWS EC2 instances and deployed its necessary applications by automation through running ansible playbooks.
Set up AWS CloudWatch for continuous monitoring of EC2 instances and AWS resources.
Utilized EBS for extending the storage of EC2 instances in dev environments for high throughput and creation of snapshots to store persistent data and mitigate failure.
Worked with AWS IAM to create new IAM users & groups, defining roles and policies.
Configured and deployed console access to servers using iLO, iDRAC technologies.
Implemented Clustering by deploying Network Interface Card (NIC) bonding protocols on host systems to provide redundancy, fault tolerance and selected the bonding module that best fits the criteria.
Utilized vSphere technologies, vCenter server to centrally manage and automate ESXi host configuration across many hosts and clusters, created templates, clones, snapshots of VMs, and performed resource management: such as CPU, Memory, storage, network adapter, and VM hosts' health status.
Initialized seamless Bare Metal to Vm (P2V) Migration, and Vm to Vm (V2V) migration of Linux servers.
Conducted IT Automation using Ansible for software and services management: services such as Apache, NFS, Samba, Vsftpd, NTP, etc.
Authenticated and configured user access controls with Active Directory.
Handled dynamic auto-tuning of Linux server performance using the Tuned tool's tuning profiles.
Performed automation of administrative tasks, such as managing backups, through ansible playbooks.
Investigated and mitigated network traffic quality using Tcpdump and Wireshark utilities.
Deployed and configured LVM storage technology to manage disks and filesystems on local and SAN (LUN), NAS, and iSCSI attached devices and create snapshots for a point in time backups.
Executed and monitored efficient user administration: user and group management.
Monitored and debugged Linux Server Performance activity through analysis of daily generated system activity reports of the system's resources such as CPU, RAM, and Disk I/O.
Set up and configured NFS server file-sharing and integrated Zabbix to monitor the NFS server's back end status.
Implemented Rsyslog for centralized and efficient systemwide log management.
Used Logrotate to create backup and share files using NFS, WinSCP, SCP, FTP, Samba.
Queried and tuned kernel parameters for dynamic server performance tweaks.
Deployed and set up MySQL to perform user configuration tasks and manage databases.
Environment:
Linux (RHEL 5.x, 6.x, 7x, CentOS 6.x, CentOS 7.x), Ansible, AWS, Docker, Git, VMware, VMotion, vSphere, VMware vCenter Converter, ESXi host hypervisor (5.5, 6.5, 6.7), BMC Remedy, Apache, Shell scripting, NFS, Samba, DNS, LDAP, Active Directory, LVM, SAN, NAS, DAS, iSCSI, RAID, HP ProLiant Gen8, Gen9 Server series, Dell PowerEdge R series.
DELL Technologies, Hopkinton, MA
Junior Linux Systems Administrator January 2014 - December 2016
Deployed, configured and maintained Red Hat Linux Servers.
Provided L1, L2, and 24x7 on-call support.
Performed root cause analysis (RCA), resolution, and follow-up to ensure the health and stability of the Linux systems.
Responsible for maintenance and troubleshooting of performance management, process management, application support.
Monitored the systemwide health of the server OS by integrating Nagios to analyze and resolve untimely incidents.
Dealt with User Account and Group Management.
Set up SSH Public Key authentication for interactive and automated single sign-on connections.
Installed and configured software with Yum and RPM meta-package handlers.
Coordinated with Vendors for various hardware and software critical issues.
Configured Raid Levels and resolved remote server issues through iLO, iDRAC.
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