SUMMARY

• Over 11+ years of experience in IT industry, in the area of System Administration.
• Extensive System Administration experience in heterogeneous environments comprising Solaris, AIX, Linux 4,5,6&7.
• Experience using scripting languages (Python, BASH, etc), configuration management tools (Git, Chef, Puppet, Ansible etc) and command execution frameworks.
• Expertise in patches and packages installation.
• Experience in implementing High Availability Clusters using VERITAS Clustering, RedHat Cluster Server.
• Configuration of NIS, NFS, SAMBA, SENDMAIL, APACHE SERVICES on Linux & Unix Environment.
• Experience in creating physical volume, logical volume, volume groups using LVM’s in Linux.
• Designing, developing and supporting web services through APIs using REST, HTTP, JSON/JSONP, etc.
• Experience using various source control technologies such as Azure DevOps, GitHub and Git.
• Implemented rapid provisioning and life cycle management for RedHat Linux using kickstart and puppet.
• Deployed Apache/HTTP servers using Ansible.
• Wrote and modified Ansible playbooks to automate build and deployment process.
• Good experience with configuration management tool Ansible and CI/CD tool Jenkins.
• Experience with virtualization and containerization (e.g., VMware, Hyper - V, Docker, Virtual Box, Kubernetes)
• Develop Docker images to support Development and Testing Teams.
• Improved Linux OS deployment and management by creating customized kickstart scripts and installing puppet.
• Used puppet for central management of Linux configuration files and software package management.
• Replaced failed hard drivers, memory dimm’s, back planes, CPU component’s, Fiber Channel Adapters (HBA’s), NiC cards and other hardware.
• Experience with F5 Load Balancing.
• Configured F5 GTM Wide IP, Pool Load Balancing Methods, probers and monitors recreating Http and https redirect VIP's to client from data servers.
• Installation of SSL certificates in Linux web servers.
• Configuring of Virtual Servers, Pools, Nodes and load balancing methods on F5 LTM.
• Created and deploy virtual machines on OpenStack.
• Experienced in Writing and Updating Shell Scripts and Perl Scripts.
• Planning and Designing VMware (ESX4.x/ ESXi/ Thin ESX and VMware Virtual Center).
• Very good exposure of the migration process using SRDF, involved in V2V, P2P and re-installs.
• Provide Lun mapping to EMC for the storage to replicate to new data center/DR sites.

TECHNICAL SKILLS

Operating systems: Solaris 11/10/8, IBM AIX (5.1, 5.3,6.1,7), Red Hat Linux (RHEL 4/5/6/7) Windows 2012/2008/2003/2000.

Server Hardware: Excellent Hardware skills on Sun Fire V100/V120/V240/V440/V480/V490 /V1280/V880/ V890, Sun Enterprise 250/220R/420R/2900, SUN T2/4, HP Proliant DL 585/360/385/585 G2, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM P690, P570, RS6000, IBM X-Series Servers, UCS.

Storage Hardware: Symmetrix DMX 800/1000 / DMX-2 / DMX-3 & EMC CLARiiON FC and CX series, FC JBOD, Brocade FC Switches, Net App Filers, Qlogic and Emulex FC HBAs, Brocade silk worm 3200, 3800,48k, iSCSI/ FC Storage arrays, RAID Storage arrays, DLT and LTO Tape Libraries.

Web/Application Server: Tomcat, Apache, WebSphere, Weblogic.

Languages: C, Clearcase, Shell scripting Ksh & Bourn Shell, PERL, Ruby, Python.

Networking Services: NIS, NFS, AutoFS, DNS.

Virtualization Products: VIO, VMware VI 4.x, VCenter Server, VMware Server, Xen, HMC, OpenStack & Solaris Zones.

PROFESSIONAL EXPERIENCE

Confidential

Sr Unix Engineer - DevOps

Responsibilities:

• Provided on-call support by rotation to provide 24x7x365 support.
• Acquired comprehensive requirements from Project Managers, Team Leads pertaining to the servers to be migrated.
• Worked on configuring objects such as F5 Load Balancer pools, members, SSL profiles for local traffic management on F5 Load balancers.
• Created and updated Puppet manifests and modules, files, and packages stored in the GIT repository.
• Making the changes on Puppet with release versions and adding the new key values in the templates.
• Worked on DevOps tools like Puppet and GIT.
• Managed the F5 BigIP GTM/LTM appliances to include writing iRules, SSL offload and everyday task of creating WIP and VIPs.
• Worked on configuring objects such as F5 Load Balancer pools, members, SSL profiles for local traffic management on F5 Load balancers.
• Experience in design and supporting Azure environments, including IaaS and PaaS.
• Automating Azure tasks using PowerShell.
• Solid understanding of security and compliance frameworks, standards and implementation in public cloud environments.
• Perform administration duties, such as installs, upgrades, configurations, tuning, and monitoring the health of multiple cloud systems such as Azure, Google and AWS.
• Experience in troubleshooting very complex distributed environments, including following stack traces back to code to determine root cause analysis
• Planning, designing and developing cloud-based applications.
• Managing cloud environments in accordance with company security guidelines.
• Contribute to deployment of environments in AWS and Azure using tools such as CloudFormation, Teraform.
• Understand and alter Jenkins automated pipelines that build, test, and deploy environments from Github to the cloud.
• Understand and troubleshoot multi-step deployment CI/CD pipelines.
• Wrote Ansible Playbooks with Python SSH as the Wrapper to manage configurations of AWS Nodes and Test playbooks on AWS instances using Python.
• Well versed with Ruby, Perl, Shell scripting, expertise in writing playbooks, modules, in Puppet and ansible environment.
• Implemented multi-tier application provisioning in OpenStack cloud, integrating it with Puppet.
• Worked on automating task-using Puppet. Application as wells as any upgrade to the nodes were push through puppet and cloning it to Gitlab.
• IaaS experience in (vSphere / ESXi / AWS / OpenStack).
• Worked on Openstack dashboard to attach or detach interfaces for existing instances.
• Allocate the virtual machine resources in OpenStack as per the application team requests.
• Experienced in installation of Docker on RHEL7. Create, Build and run the containers.
• Saved Docker images in GIT repository.
• Automated server building using System Imager, PXE, Kickstart and Jumpstart.
• Wrote cron jobs for RedHat servers, integrated with Sendmail, automated FTP uploads/downloads, scp for automated batch file transfers.
• Expertise in User and Group administration.
• Install and configured sudoers and giving temporary sudo access to app or database team when required.
• Experience in installing and configuring LDAP on various OS platforms.
• Responsible for upgrades, configuration, and deployment of Apache Tomcat, httpd, IHS, WAS and several other software packages.
• Involved in large data center migration - planning, designing, moving servers to new data center, coordinating & troubleshooting issues with various data center, network, application and storage teams.
• Designed and administrated server consolidation program through use of VMWare ESX server and VMware virtual center.
• Performed live migrations and consolidated the physical servers to VMware infrastructure virtual machines with shared storage across EMC CLARiiON, Dell and Open filer SANs.
• Involved in VMware ESX (3.5,4.1) installation, updates, patches, and gathered information for capacity and performance analysis to identify potential servers for virtualization.
• Installation, Configuration and Administration of IBM WebSphere Application Server 6,7&8 and WebSphere Portal Server on AIX and Linux platform.
• Experience in administrating the infrastructure for WebSphere Portal, Application Servers (WebSphere, WebLogic, etc.), Web Servers (IBM Http Server, IIS, etc.), Web Services, XML, HTML.
• Trouble shooting errors both Application & JVM also analyzed heap and core plus error logs - configured tuned JVM for optimum performance.
• Technical support to production's team for deployment and administration.
• Wrote Perl and shell scripts to automate certain system administration tasks.
• Setup and configure failover load balancing using IP bonding for network cards.
• Used IPtables to set up, maintain, and inspect the tables of IPv4 packet filter rules in the Linux kernel.
• Experience in iPtables commands including those used to add, append, delete, insert, or replace rules within a particular chain, parameters are required to construct a packet filtering rule.
• Applied appropriate support packages/patches to maintain system integrity.
• Setup and manage GPFS cluster in AIX/Linux environment with multiple clustered filesystems on shared SAN disk storage.
• Install and configure GPFS cluster, create node file, network shared disks and GPFS.
• Setting up cron schedules for backups and monitoring processes.
• Monitored Linux server for CPU Utilization, Memory Utilization, and Disk Utilization for performance monitoring.
• Monitored system activities and fine-tuned system parameters and configurations to optimize performance and ensure security of systems.
• Migrating VCS, Oracle RAC and RedHat Clusters with gfs filesystems servers across the Data Center.
• Experience in VERITAS Volume Manager, configuration and maintenance VERITAS File System.
• Adding Oracle ASM disk to the server. Creating and managing Oracle ASM disks during migration operations.
• Experience in NTP, DNS, Homedir, LDAP on various Unix platforms AIX, Linux and Solaris.
• Involved in Migrating AIX OS from AIX 5.2, 5.3 to 6.1 on 520, 550, 610, RS/6000 Servers.
• Worked on various clusters like HACMP, RedHat, VERITAS, GPFS and TSA.

Confidential

Linux Administrator

Responsibilities:

• Providing on line support for Sun/Linux servers in a Data Center Production Environment
• Planning, installing and configuration of operating system on new Sun/HP Servers.
• Configured System imager for Linux Servers and used it for Cloning, software distribution and OS updates.
• Installations using PXE boot, Maintenances and troubleshooting hundreds of Linux Servers.
• Worked on Solaris servers supporting all the OS administration, application and hardware issues.
• Very good working experience on RedHat Satellite Server upgrading and patching.
• Implemented upgrade of servers using RedHat Satellite Server.
• Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using VERITAS Cluster Server in SAN environment.
• Setup NFS file systems and shared them to clients.
• Troubleshooting and configuring NAS and NFS mount points.
• Troubleshooting network, application, and server related issues.
• Scheduling of automatic repetitive Jobs, and Shell Scripts with Crontab.
• Monitoring Virtual memory, Swap management, and Disk and CPU utilization by using various monitoring tools.
• Primarily applications support, config changes, troubleshooting server issues for QA/Stage/Production, monitoring issues through systems like Jira, Zabbix.
• Created RPM packages using RPMBUILD, verifying the new build packages and distributing the package.
• Involved in mass migration of data form old EMC Storage subsystems to new Subsystems.
• Administer, maintain and troubleshoot EMC CLARiiON arrays.

Environment: Solaris 8/9/10, HP-UX 11.x, HP & DELL Blade Servers Linux RHEL 4/5, SUN High End series E25K, E15K and E10k, SUN Fire, V480,V440,V240, HP rp series,, Blade Servers. EMC storage. Tivoli SAN manager, solstice disk suite (SDS), HP data Protector, Remedy Ticketing System.

Confidential

Linux Engineer

Responsibilities:

• Providing on line support for around 900 SUN/HP/IBM/DELL servers in a Data Center Production Environment
• Actively participated and supported in the migration of 460+ production servers from old data center to New Data Center
• Immediate acknowledgement of issues & solving them while constantly updating status for all levels of severities and provide RCA report.
• Coordinating with SAN team to create new disk volumes for ORACLE and Sybase database teams
• Involved in decommissioning servers project as per the company procedures and update the hardware inventory database.
• Creating documentation for datacenter hardware setups, standard operational procedures and security policies
• Switching the service groups from one node to another.
• Installation, configuration and driver upgrades of HBA's on UNIX and LINUX servers.
• Power Path software installation, configuration and administration on UNIX and Linux Servers.
• Logging events and forcing crash dumps, securing servers and troubleshooting issues.
• Co-ordination with Application team for performance/upgrade related issues.
• Performed firmware upgrades and maintained repository for the updated firmwares.
• Create and maintain technical documentation for new installations and systems changes as required.
• Maintaining, Upgrading, Troubleshooting Hardware (MBD/CPU/Memory replacement, network problems, console problems, hard disk errors etc.) of sun servers like SF V100/V120/V240/V440/V480 / V490/V1280 /V880, Enterprise 220R/420R/6500.
• Coordinate with vendors SUN, IBM, HP, and VERITAS for RCA’s.

Environment: Solaris 8/9/10, AIX 5.3, Linux. NETRAT1, Ultra 1/2/60, SF V100/V120/V240/ V440/ V480/V490/V1280/V880/V890, Sun Storedge S1, E220R/420R/2900/6500; HP DL 585 G2, IBM p5 series, EMC Symmetrix DMX 2000/3000.

Confidential

Systems Engineer

Responsibilities:

• Installation and configuring of SUN Solaris and Linux servers.
• Involved in Building and configuring Solaris 8 using Jump start server and Red Hat Linux Servers using KickStart server as required for the project.
• Maintained maximum uptime and maximum performance capacity for Production, QA, and UAT/Staging.
• Incident management for Unix Servers (Solaris, Linux).
• Primary responsibility includes building and supporting Solaris/ RedHat Linux 3,4 servers.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory etc.
• Extensive use of Korn shell, Bash for scripting.
• Regular disk management like adding / replacing hot swappable drives on existing servers, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Planned, scheduled and Implemented OS patches on both Solaris & Linux servers as a part of proactive maintenance.
• Involved in migration of projects.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.

Environment: Solaris 8/9 Red Hat Linux 4/5, VERITAS NetBackup, Korn Shell, Bash Scripting, VERITAS Volume Manager, web servers, LDAP directory, Active Directory, SAN Switches, Apache, Tomcat WebSphere, Weblogic application server.