Abhinandan Reghatte

Email: adk4p5@r.postjobfree.com

Mobile: 301-***-****

Professional summary:

Unix Administrator with over six years of experience in Administration, Engineering and Development of Information Systems on Linux Administration in RHEL 6.x/7.x/8.3, Solaris 10/11, Ubuntu 8x/18.4, SUSE Linux 10/11/12.4, AIX 6.1/7.1 and vSphere 5.x,6.5.

Experience on Web servers such as IBM WebSphere 6.0, Tomcat 5.x/4.x & Apache Http Server 1.x/2.x, Oracle WebLogic 9/10.

Well-versed in LINUX/Unix system installation and administration which includes Build, Backup, OS-Upgrades, Patching, Migration, Replication, Monitoring system performance, and configuring.

Experience installing, upgrading and configuring RedHat Linux (RHEL) 6.x, 7.5, SUSE 10.x/11.x/12.3 using Kickstart/PXE booting for Linux, Jumpstart for Solaris.

Planning and provisioning of Hardware, Operating system, Storage, Network which also includes Veritas clustering (VCS), HA Clustering, GPFS, Oracle RAC clustering.

Expertise in administering VMware Infrastructure Client 3.5 and VSphere 4.x,5.x,6.5 and KVM.

Performed High availability designing configuration & maintaining Veritas Cluster server (VCS), NetBackup, Veritas volume manager and Veritas filesystem on RHEL/SUSE Linux, Solaris and AIX Servers.

Managing Amazon Web Services (AWS) infrastructure with automation and configuration management tools such as Ansible, Puppet, or custom-built designing cloud-hosted solutions, specific AWS product suite experience.

Proficient in using all Azure & (AWS) including EC2, EBS, IAM, VPC, S3, ELB.

Experience with Configuration Management Tools (Puppet, Ansible, Chef)

Migrated VMWARE VM’s to AWS and Managed Services like EC2, S3 Bucket, Route53, ELB, VPC, EBS etc with Ansible.

Used Ansible Playbooks to setup Continuous Delivery Pipeline. Deployed micro services, including provisioning AWS environments using Ansible Playbooks

Experience designing, developing, deploying and securing PaaS & SaaS cloud deployments.

Worked with IBM Power-7/6/5 frames and installed AIX 6.x/7.1 on Lpar’s.

Hardware Installation and Configuration (Remote Access Management): Remote Access Management, Installation, Configuration and Troubleshooting of listed Servers (IBM System X Series, IBM Pseries, Sun Microsystem).

Expertise in Configuring DNS, NFS, NAS, FTP, Kerberos, Puppet, DHCP, Mail Servers clients, Remote access and security management.

Expertise in filesystem management using LVM, SVM, VxVM, ZFS, XFS and Btrfs. Creating new filesystems Increasing and decreasing filesystems, mounting/unmounting filesystems and troubleshooting DISK space issues.

Expertise in various virtualizations includes LPAR, LDOM, VMWARE, OVM, UCS, HPVM, Solaris Zones and KVM .

Expertise in handling wide verity of hardware and maintaining data centre issues.

Extensively worked on Creating and managing the VMWare ESXi clusters, adding/deleting VMs to resource pools, creating snapshots and system clones.

Installed and configured several hundred Red Hat Enterprise Linux in both Physical Blade utilizing Kickstart/PXE/Red Hat Satellite Server and VMware ESXi Virtual Environment.

Created innovative Disaster Recovery plan and enhanced existing processes by implementing SRDF replication of the Storage LUNS for mission critical operations.

Experienced in Performance Monitoring, Security, Trouble shooting, Backup, Disaster recovery, Maintenance and Support of LINUX systems.

Perform all phases of software engineering including requirements analysis, design, development and testing of CI/CD pipelines.

Design and implement scalable enterprise monitoring systems by applying continuous integration/delivery concepts & Perform maintenance and troubleshooting of our enterprise Redhat OpenShift systems.

Worked with RedHat OpenShift Container Platform for Docker and Kubernetes, used Kubernetes to manage containerized applications using its nodes, ConfigMaps, node-selector, Services and deployed application containers as Pods.

Provided support for LINUX infrastructure, both in-hours & out of hours on call, dealing with performance, resource, software and operating system issues.

Disk /File system management through VxVM, on Solaris/AIX/HP-UX/RHEL/SUSE.

Expertise in planning, documenting and supporting high availability, business persistence, fail-over, fail-back using VERITAS Cluster Server (VCS) 5.x, 6.x VERITAS cluster file systems in SAN environment.

Experience in writing Shell scripts using ksh, csh, bash, and Perl, for process automation of databases, applications, backup and scheduling.

EMC power path, Multipath configurations and bonding on Linux/Solaris servers.

User & Security administration, backup & recovery and performance monitoring and kernel tuning.

Expertise in IBM HACMP, POWER HA Cluster and working with application team to ensure the application start/stop without and failure in case of event failures.

Consultant for design and implementation of several IBM Spectrum scale (GPFS 4.x-5.0) traditional and FPO clusters on Lenovo x3950-X6 (Linux) machines.

Configure and maintain Cisco UCS blade and rackmount servers, B and C series. Update firmware for Fabric Interconnects (UCSM) and blade servers

Working knowledge on TCP/IP, UDP protocols in solving network related issues on the servers.

Managing disks, filesystems, Server performance, Users creation and granting file access permissions. Planning and provisioning of Hardware, Storage allocation and Network configurations.

Handling technical support calls over the phone and tracks tickets in Remedy, Service now and MoongSoft ticketing system.

Quick learner, highly motivated team player with excellent organizational and analytical skills.

Technical Skills:

O/S: LINUX 6/7/8.3 (REDHAT), Ubuntu, SUSE 9/10/11/12.X, HP-UX, SUN SOLARIS 8, 9, 10,11.X, IBM AIX (5.2, 5.3, 6.1, 7.1)

HARDWARE: IBM 590,595 P6 570,590, P720, P740, IBM-8233/8286-E8B,IBM-9117, IBM x3630 M4, x3650-M2/M3/M4/M5, IBM x3850-X5/X6, x3950-M2/X6, IBM BLADE SERVER JS20, JS21, HS-22/23,HP-9000, SPARC SERVERS V480, V490, E6500, E6800, T4-1/2/4, T5-2, CISCO UCSC-C220/C240/C460-M4, C220-M5

STORAGE AREA: FIBER CHANNEL SAN, SCSI, SSA. STORAGE: EMC CLARION CX700 AND EMC SYMMETRIX, IBM DS3400, IBM DS4700 AND IBM DS8100 DS8300

NETWORKING: TCP/IP, DNS, DHCP, SNMP, SMTP, NFS

Configuration Management Ansible, Puppet, CHEF

PROGRAMMING

LANGUAGES: SHELL, KORN, BASH

VIRTUALISATION LPAR, LDOM, VMWARE, OVM, UCS, HPVM, AWS EC2, Azure, KVM.

Cloud Technologies AWS, Open stack, VMWare, MS Azure, Docker, Container, ServiceNow

Professional Experience:

IBM-Fannie Mae 11/17 – Present

Reston, VA

Sr Systems Administrator

Responsibilities:

Administering Solaris 10/11.3, AIX 6.1/7.1, RHEL 6/7/8, Ubuntu and SUSE 10/11/12 Operating Systems.

Responsible for Build, Configure Virtual and Physical servers,OS-Upgrade, Firmware upgrade, kernel patch, Configuration Management, OS-Patching, Hardware management, Troubleshooting, Maintenance and Systems development of Linux/AIX/Solaris Systems.

Assisting in hardware evaluation, infrastructure build, integration and deployment of new software and databases.

Providing onsite Unix support for Client Datacenter consisting over 14000 servers.

Troubleshooting hardware, Kernel, Networking and Operating System issues in the datacenter.

Experience with Configuration Management Tools (Puppet, Ansible, Chef)

Migrated VM’s to AWS/Azure and Managed Services like EC2, S3 Bucket, Route53, ELB, VPC, EBS etc with Ansible.

Used Ansible Playbooks to setup Continuous Delivery Pipeline. Deployed micro services, including provisioning AWS environments using Ansible Playbooks

Experience designing, developing, deploying and securing PaaS & SaaS cloud deployments.

Experienced with deploying and managing containers in RedHat Openshift and Docker Enterprise.

Worked in container-based technologies like Docker, Kubernetes and OpenShift. Point team player on OpenShift for creating new Projects, Services for load balancing and adding them to Routes to be accessible from outside, troubleshooting pods through ssh and logs, modification of Build configs, templates, Image streams, etc.

Used System imager open source to capture Linux production images before build. Installation, configuration, support and upgraded patches for Red hat Satellite server.

Hardware Installation and Configuration (Remote Access Management): Remote Access Management, Installation, Configuration and Troubleshooting of listed Servers (IBM System M Series & X Series, IBM P-Series, Sun Microsystem).

Configure and maintain Cisco UCS blade and rackmount servers, B and C series. Update firmware for Fabric Interconnects (UCSM) and blade servers.

Experience in supporting and maintain Cisco UCS Director workflows for VM and bare metal OS provisions of SUSE-12 and RHEL-7.

Perform multiplatform volume management using Veritas Volume Manager (VxVM)4.x/5.x, LVM, ZFS, Brtfs and XFS command line commands to create, grow/shrink, Mirror new volumes and filesystems.

Consultant for design and implementation of several IBM Spectrum scale (GPFS 4.x/5.0) traditional and FPO clusters on Lenovo x3950-X6 machines.

Responsible to Planning, Build, Maintain and troubleshoot high availability clusters using Cluster Server (VCS) 5.x/6.x, GPFS and HA Cluster for failover and redundancy purpose.

Working knowledge on TCP/IP, UDP protocols in solving Network related issues on the servers.

Configured DNS, NFS, NAS(Netapp), FTP, SFTP, Kerberos and Security Management in a multiplatform LAN.

Experience in writing Shell scripts using ksh, csh, bash, and Perl, for process automation of databases, applications, backup and scheduling.

Deployed new Red Hat Enterprise Linux (RHEL)7 and performed application Migration.

Perform all phases of software engineering including requirements analysis, design, development and testing of CI/CD pipelines.

Creating and managing the VMWare ESXi clusters, adding/deleting VMs to resource pools, creating snapshots and system clones.

Responsible for migrating Linux physicals to VMWare Virtual machines using Vmotion and Vconverter.

Created innovative Disaster Recovery plan and enhanced existing processes by implementing SRDF replication of the Storage LUNS for mission critical operations.

Worked with Database administrators to perform Oracle 11g /12c RAC database upgrade projects on Solaris and SUSE Linux.

Setting up Puppet, Kerberos, Iptables, SSH, Sudoers, LDAP, etc.

Administers VMware Infrastructure Client 3.5 and Vsphere 4.1,5.5, 6.5.

Installed SSM, ITM, NetBackup, Samba, Tripwire, EPV, Abinitio.

Participating in root-cause analysis of recurring issues, System backup and security setup, Provide 24X7 support in Production Testing and Development environments.

Handling technical support calls over the phone and tracks tickets in Remedy, Service now and Moongsoft ticketing system.

Environment: Solaris, SuSe, RHEL, Ubuntu, AIX, Veritas NetBackup, Cisco-UCS, VCS, LDAP, VMWare, vSphere 6.5, AWS, PaaS, SaaS, Puppet, Chef, Satellite, Docker, Container, Kubernetes, OpenShift, SRDF, NFS, NAS, VxVm, LVM, ZFS, XFS, GPFS, ksh, csh, bash, Ansible, Remedy, Service now, MoongSoft .

First Data Corp 12/15 – 11/17

Omaha, NE

Linux / UNIX Administrator

Perform Installation, Configuration Management, Maintenance and Systems Development of LINUX / UNIX Systems.

Monitored the systems and administered Servers for day-to-day problems, patches, user administration, and hardware failure, monitoring log files, backup, software upgrades, configuration changes and documentation.

Design, build, install and configure Red Hat Enterprise Linux servers (RHEL), Ubuntu & HP-UX as Virtual machines.

Wrote suite of tools for NIS and local UNIX accounts management, keeping user details synchronized across the systems.

Planning and Implementing Server instillations and Virtual server solutions

Installation of RHEL 5.2, 6.1 on the IBM blades (HS20’s, HS21’s, Hs40’s, JS23’s), X series (3850’s and 3650’s), and on Dell Power Edge servers (2950,2900) servers either by ISO boot or PXE boot using the kickstart server.

Building software packages on Red Hat Linux (RPM).

Provided support for UNIX infrastructure, both in-hours & out of hours on call, dealing with performance, resource, software and operating system issues.

Installed, upgraded and configured SUN Solaris 9/10 on Sun Servers using Jumpstart and Red hat Enterprise Linux (RHEL) 5/6 using Kickstart.

Proficient in using all Amazon Web Services AWS including EC2, EBS, VPC, IAM, S3, ELB.

Create and administer RedHat Enterprise Linux operating systems to implement on the existing network.

Perform migration from on-premises environments into AWS/Azure.

Worked with Ansible playbooks for virtual and physical instance provisioning, configuration management, patching and software deployment.

Good experience in Oracle VM(OVM), Virtualization KVM, VMWare, LDOM and Zones.

Most of these tasks are performed using native Korn, Shell and Perl scripts system resources from one partition to another partition.

Responsible for Continuous Integration CI/CD Continuous Delivery process implementation-using Jenkins along with scripts to automate routine job.

Developed UNIX shell scripts to generate performance matrix of the servers.

Shell scripts to gather server resource statistics like available memory, processors etc. from multiple servers.

Scripts to gather information on the peak load times and logs of the servers.

Written Shell scripts to collect server statistics & to create users on multiple servers

Written Shell scripts to check if all the servers have dual SAN paths and if they are live paths

Participated in problem resolution arising from functional testing activities

Migrated Linux based machines and Power off Machines to virtual machines using VMware converter.

Worked closely with DBAs to install raid, disk areas for Oracle database instance installations, created Bourne shell database start up and shutdown scripts for UNIX servers. Wrote shell scripts for automated installations, to extract logs.

Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server (VCS) and Red hat Cluster Server.

Coded various Perl/Shell scripts to automate backup and recovery.

Performed UNIX System Administration. Fine tuning, Kernel debugging, process scheduling, disk and file system I/O, kernel internals, TCP/IP communications.

UNIX Shell/Perl scripting for job automation. Creating zones for application.

Configured the LUNs assigned by the storage administrators, and managed Volumes using Logical Volume Manager (LVM) on Linux. Created ZFS file system in Solaris 10 using Zpool, Veritas (VxVM) and ZFS and created Veritas file systems 5.0, RAID 0, 1, 5 volumes

Implemented Oracle RAC high availability application cluster on RHEL 5,6.

Developed automated scripts/system monitoring tools/testing tools using UNIX shell and Perl Scripting.

Environment: RHEL, AIX, Ubuntu, Solaris, VIO, LPAR, LDOM, SAN, NAS(Netapp), NIS, LVM, ZFS, VxVM, RAID, OVM, KVM, LDOM, Zones, AWS EC2, EBS, VPC, IAM, S3, ELB, Azure, VMware, Perl, Shell, Samba, VCS, ISO boot, PXE, Kickstart, TCP/IP.

State Farm Insurance 02/15 – 11/15

Bloomington, IL

Linux Administrator

Installed, maintained and upgraded Redhat Linux (RHEL), HP-UX and Solaris Servers using kickstart based network installation.

Configured and administered multiple production Redhat 6.0 servers across multiple platforms.

Perl development to create a suite of tools to support the automated provisioning of new Linux and Solaris servers using Sun's JET (Jumpstart Enterprise Toolkit)

Worked on requirement, design & architecture, product development and unit testing.

Worked on Shell scripts to run, kill, Monitor, backup, rollback and archive all files for Server.

Worked on resolving the day to day issues reported by business people and resolve pre-production issues in C++ Applications.

Building software packages on Red Hat Linux (RPM) and Solaris (DaTaStReAm package format)

Wrote tools in Perl to login & interrogate Sun ILOM & HP ILO via SSH and telnet.

Wrote tools in Perl & shell to run parallel SSH connections to remediate configs & QA on several thousand hosts.

Configured and maintained the volume groups, logical volumes using LVM, VERITAS Volume Manager (VxVM) and Solaris Volume Manager.

Built and maintained RHEL servers using Oracle VM(OVM).

Performed High availability designing using VERITAS Cluster Server (VCS) 5.0 on Redhat Linux (RHEL) and Solaris Servers.

Installed the Redhat 6.0 operating system and set up the Oracle environment.

Managed File system using VERITAS volume manager 5.0.

Performed centralized management of Linux boxes using Puppet.

Migration involved backup & restore and EMC’s Open Migrator, cpio, rsync and cp.

Supported Oracle 9i, 10g database server applications and processes on Redhat 5.x, 6.x servers.

400+ physical and VMware ESX virtual servers in a mixed Red Hat Linux and Windows.

Installed, configured and administered Solaris 10/11 using Jumpstart.

Setting up backup and restore procedure with RMAN and coded various Perl scripts to automate the backup and restore procedures.

Performed Troubleshooting NFS, NIS, Samba, DNS, DHCP, LDAP, Mysql and network problems.

Maintained the user’s accounts in NIS environment.

Environment: RHEL, Solaris, HP-UX, LDOM, LVM, ZFS, VxVM, VCS, OVM, VMware ESXI, NFS, NIS, Samba, DNS, DHCP, LDAP, Mysql

Education:

Degree: Bachelor of Technology from JNTU, Hyderabad INDIA May, 2013

Master of Science in Electrical and Computer Engineering from Southern Illinois University Carbondale, Illinois. Dec, 2014

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