Mohammed Abdul

: adiv4t@r.postjobfree.com

: 623-***-****

Professional Summary:

•8+ years of experience in System Administration, server builds and production support of Red Hat Linux, CentOS, Ubuntu and Windows.

•Experienced in installation and upgrade of Solaris 9/10/11, RHEL 4.x/5.x/6.x/7 using Jumpstart, Kickstart.

•Migration, patching, kernel tuning and capacity planning of Unix infrastructure for mid to large data centers.

•Experience with Red Hat Satellite version 6 & 7 includes systems provisioning, content view management & host group management.

•Used Satellite server, Ansible & VUM for Linux patching and upgrades

•Monitoring and administering of Red Hat Linux on Enterprise class HP Blade servers and Sun Solaris Servers for operating systems, patches, packages, hardware, firmware drivers etc.

•Experience with Virtualization platform (VMWare, Xen)

• Experience with common protocols and associated services (e.g. DNS, DHCP, HTTP, LDAP, TLS)

•Worked on security remediation, server hardening, and PCI, SAS70 audits.

•Installation, configuration of volume management using Logical Volume Manager.

•Experienced in Data Center Migration activities

•Experience in planning, documenting and supporting high availability, data replication, business persistence, failover and failback processes.

•Installed various software like BMC, Veritas products while building up new servers.

•Expertise in systems performance monitoring & tuning: CPU, Disk, Memory, Network Utilization.

•HIPAA, ITIL / Change compliance awareness and team representation in Change Control Board meetings.

•Experience in setting up environment using NFS, NIS, DNS and DHCP.

• Solid experience of using LDAP, PAM, Kerberos, SSSD and openssl protocols.

•Good experience in bash & shell scripting.

•Knowledgeable of security access and monitoring through Nagios and Centrify.

•Provided on call support for mission critical servers through 24/7 weekly rotation.

Education:

B.Tech. in Electronics and Communication Engineering May 2008

Certifications:

AWS certified DevOps Engineer Jan’ 2020

Technical skills:

Operating Systems: RedHat LINUX Release 5.x - 7.x, Fedora, openSUSE, CentOS, Solaris 8-11, UBUNTU, AIX 5.0/5.x/6.1, Windows ‘98- ‘12

Cluster: Red hat, Pacemaker, VSAN, VERITAS

Virtualization: VMware & Xen.

Database Servers: Oracle 8/9i/10, 11G, DB2 and MySQL, Content Switching (Load Balancing)

Software and App servers VERITAS Volume Manager, VERITAS Net backup, RedHat Satellite 5.x & 6.x TSM, Samba, DHCP, NFS, DNS, DHCP, Send mail, Apache Web Server, Web Logic 8.1, Web sphere

SDLC Waterfall, Agile

Scripting languages: Shell, bash.

Cloud Technologies Amazon Web Services (AWS)

IBM - Walmart (February 2019 – Present)

Bentonville (AR)

Systems Engineer

Responsibilities:

•Install, configure and maintain 50000+ physical, virtual RedHat Linux & Windows servers running on XEN and VMware hosts.

•Troubleshooting OS related issues for Red Hat v7 and v6, Windows 2003/08/08R2/12/12R2/16, SLES 10/11, CentOS 7 and VMware ESXi 5/5.5/6/6.5/6.7 hosts.

•Worked on automation of activities through scripting (PowerShell, Shell, Bash).

•Worked on conversion projects of upgrading from Citrix Xen to VMware virtualization.

•Validating and optimizing performance and resolve problems using PowerShell and Shell Scripting.

•Creating Virtual switches and port groups, configure virtual network settings for redundancy by teaming up NIC's and configure network traffic, security and load balancing policies on VMware hosts.

•Analyze network traffic through various tools like tcpdump, iftop, iptraf & netstat.

•Installed, Configured and maintained RedHat Satellite Server.

•Managed RedHat Satellite to update security updates and update packages.

•Worked extensively on ESXi, guest OS installation, setting up of VM priorities, templates, cloning and snapshots. Worked on building, managing and troubleshooting VSA 5.5 clusters and vSAN 6.0 and 6.5 clusters

•Installed several hotfixes and patches on Windows and build upgrades on ESXi servers to eliminate vulnerabilities through SCCM, PowerShell scripts and VUM.

•Maintained documentation for server builds, application installations and server validation.

•Handling first and second level escalation problem tickets.

•Participate in regular 24X7 On-call rotation.

eBay Inc. (Aug 2016 - Dec 2018)

San Jose (CA)

System Admin

Responsibilities:

•Understand eBay environment and think critically to handle migration and decommission processes in a fast-paced server environment, contribute constructive solutions problems.

•Build RHEL v7 & v6 servers as well as CentOS 7.x and Windows ’97- ‘2K servers on ESX 5.x VMware platform.

•Update and administer Linux, CentOS, Ubuntu, Solaris 11 as well as Windows servers.

•Production support to over 5000+ mission critical servers running multi-terabyte DBs such as Oracle, RAC and many more applications such as WebLogic, Apache, etc.

•Configuring, monitoring, tuning, troubleshooting and system administration of Linux, Solaris and Windows servers.

•Handle local account issues, Active Directory accounts, Single Identity Middleware (Centrify), for Access Control

•Active Directory and Exchange 2010 Administration which included user account creation and terminations.

•VMWare ESX(i) 5.0 and above (vSphere, vCenter) installation, configuration & administration.

•Real time Interface with internal services using existing tools/scripts to provision physical, virtual and cloud server and configure compute for production traffic.

•Utilize Trace & Jira for change control

•Part of a 24x7 on-call rotation, which supported the thousands of servers and hundreds of functions for the customer facing eBay site.

•Follow established SOPs (Standard Operating Procedures) for various tasks.

Techzperts Solutions Inc. (May 2015 – July 2016)

Chicago (IL)

UNIX/Linux Administrator

Responsibilities:

•Provide support to mission critical applications spread across 800+ servers.

•Installed, configured, tuned and provided production support for RHEL 4-6, Solaris 8-10 servers, and AIX 6.1

•Filesystem resizing, data center migration, and user-administration activities on RHEL, Solaris and AIX platforms

•Build RHEL on VMWare ESX environments, supporting web, app and multi-node DB RAC servers.

•Installed and configured Solaris 8, 9, 10. Configured Zones and LDOMs and containers for Solaris 10.

•Configured FTP, Telnet, SSH, iptables and SUDO for the servers.

•Create and modify Unix Shell scripts with sed and awk to update database, create file reports and monitor system performance.

•Assist different teams such as Oracle DBAs, Network Administrators, Programmers, etc. to install, configure, monitor and tune their software running on the UNIX/LINUX servers.

•Used Satellite 6 for patching, yum package installation & kernel upgrades.

•Implemented root mirroring for systems using VxVm (Veritas Volume Manager), LVM, ZFS on SAN EMC storage

•Upgraded Veritas Volume Manager from 3.x to 5.x

•Support databases like Oracle & Web servers for Apache, Tomcat & other proprietary applications.

•Install configure and manage NIS, NFS, DNS and Send Mail.

•Implementation of PCI security standards for SAS70 and internal IT audits across UNIX shop compromising of AIX (5.3, 6.1), Solaris (8, 9, and 10) and RHEL (4, 5, 6).

•Used BMC Remedy for change control.

•Document on team wiki for any technical and non-technical processes.

AxNess Technologies Private Limited (Mar 2013 – Feb 2015)

Hyderabad, India

Unix / Linux Systems Administrator

Responsibilities:

•Installed and configured RHEL 4,5, Solaris 8, 9, 10 and AIX 6.1 in an environment of over 7k servers.

•Used network installation methods – jumpstart, kickstart

•Configured Zones and LDOMs and containers for Solaris 10, T-series and M-series hardware

•Designed, implemented & maintained multi node Veritas Cluster.

•Prepared server availability report for the management, including capacity management via HBA, Memory and NIC inventory management via Shell Scripting across 7k servers

•Upgraded Solaris OS (Live upgrade from Solaris 8, 9 to Solaris 10).

•Upgrade firmware, drivers for server stability e.g lpfs, qualcom, etc. for HBAs, T-series firmware for ILO, HP console modules

•Used FTP for file transfers and configuration.

•Supported databases like Oracle & Web servers like Apache, Tomcat & other proprietary applications.

•Server security and hardening on Solaris and Linux platforms

JELTRON Pvt. Ltd (Mar 2012 – Jan 2013)

Hyderabad, India

Associate System Administrator

Responsibilities:

•Administered and maintained Red Hat Linux/Solaris and Windows servers.

•Migration of servers to new hardware (HP Blade Center) and new OS version, responsible for all UNIX related issues including OS, device drivers, OS tuning, environment setup for applications and updates

•Compiled kernel, Device drivers, performance tuning for OS and application, customization as per requirements, security patching

•Utilized VMware 5.5 to build virtual Windows 2012 Servers and Windows 7 Desktops in a 100+ server environment.

•Configured different hardware and software components as per requirement to support UNIX initiatives

•Indented and executed scripts and other UNIX utilities; create, tune, and optimize stored procedures and DTS packages

•Mounted file systems on remote servers using NFS Server & client configurations, performed disk configurations and crash recovery

•Installed and configured RPM packages for upgrades using YUM server.

•Follow documented procedures and develop new documented procedures for new technologies.

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