SUMMARY:
A Linux Engineer/ Admin with * years of experience in administration, support, install, configure and maintain Linux operating systems and storage infrastructure supporting a mission-critical environment on developments, testing, and production servers (BMs, VMs)
3 year of windows administration experience mainly with Windows patching, troubleshooting windows servers and including user management. design, build, implement, document, testing, patch management and support,
(Microsft SCCM, Splunk, Cyberak, Active Directory, Server 2008-2016)
Expertise in implementation and operational support of Linux servers and virtual environment ( Public and Private cloud platforms) (VMware and AWS Cloud including patching, provisioning, storage management, decommissioning, troubleshooting and automation with Ansible tower, Bash Scripting, realize automation and orchestration (vRA))
Installed and configured Apache, Nginx, MySQL, NFS, DNS, DHCP, FTP, SFTP VSFTPD, HTTP, HTTPS, Apache, NGINX, SAMBA, MySQL, Tomcat, Oracle, Titanium, SAMBA, Auto FS) while solving P1-P3 incidents with relevant SLA (Service Level Agreement) and Performance monitoring and tuning
Patched 1000+ Linux servers using automation with ansible tower and windows servers using SCCM and Splunk reporting with change control process.
Migration from RHEL 5 to RHEL 7/ RHEL 8 oracle database disks standalone and cluster nodes is a daily job in my last role. Migration users from rhel5 to rhel7 using bash script is plus.
Build Linux (Redhat Linux) and Windows 2012/ 2016 servers and Red Hat Enterprise Linux using scalable methods with tools of vRealize automation and orchestration and ansible Tower (vRA)
Automation to enhances functionality of systems by developing and modifying scripts to automate system processes of servers and infrastructure applications including patch management and automating repetitive system administration tasks (Bash, Ansible)
Pursuing Red hat 8 Certification and Ansible Certification. EDUCATION:
Master in Computer Science KTH Royal Institute of Technology, Sweden Aug 2010-June 2011 BSc in Computer Engineering University of Engineering and Technology, Taxila, Pakistan Aug 2005-Sep 2009 SKILLS:
Linux Unix Windows Red Hat Enterprise Linux 6, 7, 8, CentOS 6, 7, 8, AIX, HP-UX, Windows 2008/2012/2016
Public Private Clound VMware VMotion, vCenter, vSphere, Esxi host, Vcenter, vRealize Operation Manager, AWS, IAM, EC2, EFS, S3, Cloud formation, EBS, SNS, SQS, Lambda, RDS, VPC
Automation Configuration Ansible, Ansible Tower, NFS, DNS, DHCP, FTP, vsftpd, HTTP, Apache, NGINX, Samba, PXE boot, kickstart and MySQL
Authentication CyberArk, Active Directory, Open LDAP, Windows server 2016/2012, Centrify, Red Hat Satellite, Ansible, Ansible Tower, Splunk, SCCM
Patching orchestration Ansible Tower, vRealize Automation and Archestration Tool, ServiceNow, Vagrant
Hardware troubleshooting Rack and Stack, build servers, ILO, iDRAC, KVM. RAID, UCS blades, DELL AND HP, Cisco UCS, NetApp, ESXi
Storage and Databases SAN, NAS, iSCSI, RAID, LVM, XFS, EXT4, EXT3, Oracle, PostgreSQL, Tomcat, Zabbix
Ticketing Monitoring
Reporting
Splunk, ServiceNow, Jirra, Zabbix, Nagios
Zaheer Abbas
Lawful Permanent Resident Brooklyn, New York
https://www.linkedin.com/in/abbaszaheer/
Available for Phone / Video Interview on 24 – 48hrs prior Notice Linux Engineer Admin
adg24f@r.postjobfree.com
PROFESSIONAL EXPERIENCE
Express Scripts/CIGNA St. Louise, Missouri
Infrastructure Engineer /Admin Feb-2020-Current
Experience in Red Hat Linux (5.0, 6.0, 7.0, 8.0), Windows administrations (2008, 2012, 2016), Ansible Tower, Vrealize operation manager, ServiceNow, AIX, HP-UX, Docker, Cloud, Bash scripting, patching, migration, decommission, troubleshooting and monitoring
Patched 1000+ Linux servers with 100% efficiency to remove vulnerability using automation with ansible tower with change control process. Troubleshooted kernel panic, duplicate packages conflicts, subscription management issues from red hat satellite, DMZ Servers, NIC disabled servers, when the Tower Job hangs, when server is not registered with the tower
Patched AIX servers (20+) and 500+ windows servers per day) using SCCM and Splunk reporting with 99% efficiency to remove vulnerabilities and performed troubleshooting when SCCM fails to patch servers such as cleaning SSCM cache, renaming software distribution, increasing/cleaning space in C drive, manual updates from the software center. Extended deadlines using SCCM. Aka. understand whole windows patching procedure. Logins with windows servers using CyberArk.
Build Linux and Windows 2012/ 2016 servers and Red Hat Enterprise Linux using scalable methods with tools of vRealize automation and orchestration and ansible Tower
Migration from RHEL 5 to RHEL 7/ RHEL 8 oracle database disks standalone and cluster nodes is a daily job in my last role. Migration users from rhel5 to rhel7 using bash script is plus.
One-year automation experience where I designed ansible playbook and bash scripting to manage day to day task which includes software deployment (Apache, Nginx, MySQL server), configuration management LVM, SSH, Apache web, enable and disable cronjobs, check uptime, LVM management, user management, kernel parameters. Check disk space, CPU performance. Work in Ansible Tower to configure job Templates, Workflow, Inventories, credentials and integrating splunk for monitoring
Added resources CPU, RAM, HARDISK to virtual machines, took snapshots, clones, vmotion virtual machines and analyze the resource usage using vRealize Operation manager, to power on impossible virtual machines, enable/disable NIC cards, move a VM to DMZ Zone, put ESXi hosts in maintenance mode, vSphere HA when an ESXi host fails, vSwitch and Port Group configurations, upgrade process of ESXi host. Design, Installation, and configuration of new vSphere 5.0, 6.5 and 6.7 ESXi servers for the P2V candidates on Rack Servers, Exploited vCenter Server appliances to enable centralized management of multiple ESXi hosts, installed and Upgraded ESXI host from 6.5 to 6.7
Sets up administrator and service accounts, maintains system documentation, tunes system performance, and installs system-wide software; install new software, troubleshoot, grant permissions to applications, and assist in training lesser experienced users. Added users using active directory and added users in Red hat Linux and AIX including SUDO access. Installed Tasks on installation using yum and subscription manager ansible, java, oracle, AHF, oracle products, oracle 12, httpd, ftp, git, Jenkins, Samba, NFS, DNS, Open-SSH etc.
Perform system updates, make recommendations on server configurations, and implement changes in multiple environments from test or development to production
Monitor infrastructure, systems operations, and critical application services 24/7; provide information and statistics relevant to system limits on capacity, data storage, system utilization, etc.; respond to critical outages and restore services within agreed upon service levels
Respond to multiple channels of contact, including phone, email, instant messaging, monitoring and event management alerts, and portal submission of tickets to the IT service management tool.
Ensure request, incident, problem, and change tickets are accurate and complete, from creation to closure. This is includes maintaining communications with all stakeholders to achieve high level of customer satisfaction. Resolve problems by gathering information, determining the customers’ needs, and conducting research to find a correct solution.
Hands-on experience in HP Gen(8-9), Power Edge R series Dell servers, and UCS blade servers, racking and stacking, troubleshooting various hardware issues with ILO (3.0, 4.0, 5.0), iDRAC, KVM consoles, configured RAID levels
( RAID 0, RAID1, RAID 5, RAID 6, RAID 10) and Replaced server parts with the vendor (HP, DELL, and IBM) and analyses IML Logs
Follow established processes / standards and identify / propose improvements as necessary and Assist in developing technical documentation to improve training and service delivery and have written more than 100 standard of operating procedures (SOP) while Maintains a high-level knowledge of server infrastructure and Provides after hours and on-call support as needed.
Walmart Bentonville, Arkansas
Linux Engineer /Admin Nov 2017 – Feb 2020
Experienced in working with different teams such as Network Engineering., Database teams, application teams, storage team, security team and data center team to resolve the issues and provide customer Satisfaction
Installed, configured, maintained 15000+ Linux systems and LINUX Servers (Apache, Nginx, MySQL, NFS, DNS, DHCP, FTP, VSFTPD, HTTP, HTTPS, Apache, NGINX, SAMBA, MySQL, PXE Boot) and Windows Servers.
Day-to-day patching, and maintaining Linux systems in a mission critical bare metals and virtualized (VMware) environment using Red Hat Satellite
Advance Systems administration in support of Windows Servers & VMware environment (vMotion, Clusters)
Strong knowledge of Microsoft System Center Configuration Manager (SCCM) and related products
Utilized vSphere technologies, vCenter server to automate ESXi host configuration across a large number of hosts and clusters, created templates, clones, snapshots of VMs, added resources such as CPU, ram, network adapter, and P2V, V2V migration using VMware vCenter converter and VMotion
Managed LVM on SAN (LUN), NAS and ISCSI where I created, extended, migrated, mirrored, backed up, performed snapshot and troubleshoot failed LVM. In addition to this, I configured hardware RAID and solved related issues
(pvcreate, vgextend, lvcreate, lvextend, fdisk, lsblk, df, du, XFS, EXT4)
Monitored system activities such as CPU, Memory, Disk and Swap space usage to avoid performance issues and tuned various kernel parameters to achieve optimized performance ( sysctl, ulimit, free, top, vmstat, iostat, SAR, PS)
Solved and documented SOP related to incidents, service request and Change requests ranges from p1 to p4 on issues of slow servers, the server crashed, file system maintenance (/var log is full, LVM is corrupted, hard disk failures, etc.), various networking issues aka server is not online, SSH, DNS, PXE boot and NFS, etc
Locate and accurately interpret logs of system events for troubleshooting purposes via syslog server.
Worked on (activity directory) AD environment to administer and maintain user or service level accounts and managing user authentication (LDAP Protocol)
Fluent in version control systems like GIT, GitHub for code check-ins/checkouts and branching and various other functions where I integrated build process with Jenkins
Worked on developing procedures to automate various systems and tasks (e.g. automating code builds and deployments) though Git, Docker, Ansible
Managed and deployed instances on AWS environment on EC2 in appropriate VPC and used cloud formation to deploy EC2, Cloud watch, Route53, VPC, IAM and managed a VPC
Ticket assessment and prioritizing while solving various Linux issues (ServiceNow, Nagios) Environment: Apache, MySQL, Shell Script, Ansible, Linux, Windows, ServiceNow, Python, AWS, Docker, GIT, SQL SERVER 2012, VMware, vMotion, vSphere, Datacenter, VMware vCenter, vSphere, ESXi host hypervisor (5.5, 6.5, 6.7), VMware converter, LINUX (CentOS 6, 7 RHEL5, RHEL 6, RHEL 7), Zerto, LVM, NAS, DAS, ISCSI, HP and DELL servers and RAID University of Arizona Tucson, AZ
Linux Admin Sep 2015 – Oct 2017
Provided system deployment, system administration, and troubleshooting and operational support to Linux based prod and dev. servers
Installed Red Hat Enterprise Linux using PXEBOOT and Kickstart
Experienced in installing, upgrading and maintaining the middleware (Apache, MySQL, MY SQL SEVER and PHP) for different applications
Preparation and execution of server patching and upgrade on more than 50 a day on Red Hat Linux servers
Configuration Management in Linux RHEL 5, RHEL 6 and RHEL 7 to secure command-line service on remote systems, using Open SSH and configured various services such as DNS, HTTP, HTTPS, SMTP, FTP, and apache and PXE boot, Kickstart
SME In incidents management, change requests and service requests where performed Root cause analysis while solving network related ( machine not pingable, SSH, HTTPD, NFS, SAMBA, DNS with tools tcpdump, Wireshark, ifconfig, ethtool, nslookup, dig, route and traceroute), performance ( top, vmstate, iostat, iotop, ps, SAR), disk management (df, du, lsblk, fdisk) and lvm management issues
Setup of full networking services and protocols on Linux including NIS/NFS, SSH, DHCP, SAMBA, TCP/IP, applications, Kickstart, and print servers to ensure optimal networking, application, and printing functionality
Security (vulnerability) through patching, users, groups administration and daily backup (Net backup, tar, dump, and cpio, rsync and scp) and restore operations, networking service, performance, resource monitoring, startup & shutdown scripts, crontab, File system maintenance and automation with bash scripts
Responded to all LINUX systems problems 24x7 as a part of an on-call rotation and resolving issues promptly
Built VMware ESXI hosts and convert physical server to VM using VMware vCenter Converter Environment: Red Hat Enterprise Linux (5.0, 6.0, 7.0), Shell Scripting, NFS, Samba, DNS, Apache, LDAP, Active Directory, Service Now, HP ProLiant server, Dell power edge R-series Nokia, Bell Labs New Jersey
Jr. Linux Admin July 2013 – Aug 2015
Installed, maintained and upgraded Red hat Linux Servers
Installed and configure software’s, their components and network services using Yum
Managed systems for monitoring system performance and availability
Managed users, groups and administrated local password policies and Set access control lists (ACLs) on files to handle situations requiring complex user and group access permissions
Linux file system permissions on files and directories and Managed physical storage and disk partitions with LVM and other tools such as fdisk, gdisk, parted, ext4
Controlled and monitored network services and system daemons with service and chkconfig
Job Scheduling and automating process using CRON and Configured secure command line service on remote systems with OpenSSH
Located and accurately interpret logs of system events for troubleshooting purposes
Handled networking with LAN, WAN, Routers, Gateway