SUMMARY

• Hands - on technology professional with over 13 years in Unix/Linux experience delivering high-quality UNIX/Linux systems administration.
• Experienced in Installing, configuring and administering Red Hat 5/6/7, Debian 6/7/8, SUSE 11.2, CentOS 6/7, Aix 5.3/6.1/7.1.
• Experience in system tuning, security, and upgrades of Red Hat Linux & Debian.
• Creating and managing Virtual Machines and Templates, worked with clones and snapshots of Virtual Machines.
• Experienced in DevOps CI/CD tools including Jenkins, Github, Chef, and Puppet.
• Install / Configured SAMBA, FTP/SFTP, DNS, SNMP, and LDAP.
• Experience in transformation and remediation process.
• Implemented and enhanced the existing scripts which are developed in Shell, and Perl.
• Expertise in OS Migrations from AIX 5.3, 6.1 to 7.1 on PSeries servers.
• Performed Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESXi, VCenter and VM tools.
• Experienced in IBM Tivoli Storage Management, creating TSM Servers and Clients, performing backups.
• Puppet configuration and implementation, good understanding on Amazon AWS console and Cloud service and support.
• Implementation knowledge on EC2 virtual server in Amazon cloud.
• Extensive experience in installing, and configuring LAMP stack which includes Apache, MySQL and PHP.
• Knowledge with Shared Ethernet Adapter, Link Aggregation and NPIV concepts associated with VIO server technology.
• Experience with LVM, NIM, SMITTY, User & System Resource Management, Job Scheduling and Paging Space Management.
• Expertise in creating scripts with Bash, Python, and Perl which helps in automation and simplification of jobs.
• Experience in AIX LPAR Virtualization and configuration work using HMC/VIOS (vscsi and NPIV).
• Installation and configuration of NIM master server and clients.
• Experience in working with Live Partition Mobility (LPM) to perform migration from E850Cs to the E870s.
• Experience in Installation, administration and configuration of VIO Server and VIO client LPAR'S through HMC.
• Worked 24X7 and on-call in production support and troubleshooting in Red Hat, Debain, CentOS and AIX environments.

TECHNICAL SKILLS

Operating Systems: RHEL 5.5/6.1/7, CentOS 6/7, SUSE 11.2, IBM AIX (5.x, 6.1, 7.1) Sun Solaris7/8/10

Hardware: IBM RS/6000, p5 520,560,561,570,590,595 p6 570,590, Power8 based systems E850, E870, SUN E-3000/4000, HP 9000/750

Storage Area: Fiber Channel SAN, SCSI, SSA

Tools: LVM, NIM, HMC, TSM, TDP, UC4, Java, Puppet, VMware, Jenkin, Git

Monitoring Tools: SolarWinds, Patrol, Nagios

RDBMS: Oracle 8.0, 9i, 10g

ERP Tools: SAPDBA, BRTOOLS

Protocols: TCP/IP, SNMP, SMTP, TELNET

Prog. Languages: SQL, PLSQL, ABAP/4, Bash, and Python

PROFESSIONAL EXPERIENCE

Confidential, CA

Linux System Administrator/DevOps

Responsibilities:

• Worked on variety of Linux platforms Red Hat, Debian, and Aix includes installation, configuring and maintenance of applications on these environments.
• Managing Amazon instances by taking AMIs and performing administration and monitoring of Amazon instances like EC2 using Amazon Cloud Watch.
• Transfer data from Datacenters to cloud using AWS Import/Export Snowball service.
• Coordinate with establishing and applying appropriate branching, labelling, designing and implementing for fully automated server build management.
• Worked and support version control systems like Subversion, GIT and used Source code management client tools like Git Bash, GitHub, and Git GUI.
• Built multiple cookbooks in Chef, Implemented environments, roles, data bags in Chef for better environment management.
• Experience in Docker engine and Docker Machine environments, to deploy the micro services oriented environments for scalable applications.
• Monitoring and deployment By using DevOps Technologies like Chef, Ansible, Docker.
• Worked in various DevOps tools like Jenkins, Bamboo, SVN, GIT. Well knowledge in CI and CD methodologies with Jenkins.
• Developed and deployed Chef, Ansible based on their cookbooks, recipes, manifest and roles.
• Deployed micro services, including provisioning AWS environments using Ansible Playbooks.
• Responsible for Continuous Integration (CI) and Continuous Delivery (CD) process implementation using Jenkins along with Shell scripts to automate routine jobs.
• Used GIT version control system to manage different builds for the system.
• Configured Apache Tomcat with load balancers using mod.jk. Implemented same with Chef.
• Created and managed multiple instances of Apache Tomcat and deployed several test applications in those instances in QA environment.
• Proactive check main servers for load anomalies and operation.
• Notify users of old processes running/hanging on servers and take appropriate action.
• Increase monitoring, alert messaging and self-healing system using SiteScope. Automate cache refresh.
• Performed Windows 2008 and Windows 2012 cifs vulnerable patching.
• Performed numerous Debian upgrades from version 7 to version 8.
• Installation of Red hat Enterprise Linux 7.4 servers on VMware vSphere using Chef & Puppet.
• Creation of new cookbooks, recipes and running test kitchens to update Chef Environment.
• Create, configure and update Chef master servers.
• Create new repos for RHEL 5.6, 5.7 and 5.8 environments on request.
• Install/configure VSphere client. Migrated Red Hat VM to different frame.
• Resolved missing home directories in NIS environment.
• Installed and configured VMware tool and install Python libraries under Solaris environment.
• Install and configured Active Directory on Windows 2012R2 environment.
• Create new users under NIS environment. Performed workspace copy using rsync tool.
• Install and configure SNMP and discover new server in Solar Winds for monitoring.
• Extensively used RPM, yum repos & Red Hat Linux tools to install packages and patches for Red Hat Linux servers.
• Worked on variety of Linux platforms Red Hat, Debian Linux, AIX which includes installation, configuring and maintenance of applications on this environment.
• Updating patches to keep servers updated against bugs present in the operating system using Red Hat Satellite Server.
• Build servers using Kick Start, Red Hat Satellite Server, CentOS, and VSphere Client.
• Experience in using VMware VMotion to move VM's from One Datacenter to another datacenter.
• Configured SAMBA between the Linux and windows servers to provide directory sharing.
• Worked with Red Hat Satellite Server which is used to push changes across various servers simultaneously.
• Installed Open ssh, sudo, lsof, openSSL and upgrade Sudo version.
• Configure performance monitoring and health check on Linux environment.
• Create CRON jobs to automate various system administration tasks using Crontab Utility.
• Create shell, bash scripts for monitoring server performance of Unix/Linux environment.

Confidential, CA

Sr. AIX/Linux System Administrator

Responsibilities:

• Build servers using Kick Start, Red Hat Satellite Server, and vSphere Client.
• Configured shared, Concurrent Vgs, Resource Groups, Application servers on HACMP Cluster.
• Installed packages using YUM and Red hat Package Manager (RPM) on various servers.
• Troubleshoot failed disk path and enabled back.
• Configuring Kickstart Servers and booting the images using PXE in Red hat Linux (RHEL).
• Strong technical background in Storage, Disk, Process, User Management, Logical Volume Management (LVM) and logical partitioning.
• Knowledge of Routers and Switches, Subnet, VLAN, TCP/IP and Sarbanes Oxley compliance (SOX).
• Installed and configured LPAR’s with AIX 6.1 and 7.1 on p6 and p7 servers.
• Performed OS migration on numerous LPAR’s from AIX 5.3 to AIX 6.1, and AIX 7.1.
• Extensive working experience on LVM. Creating VG, LV and FS.
• Manage Linux filesystems, logical volumes, system logs and journal.
• Performed mksysb backup and restore using NIM master.
• Worked with Red Hat Satellite Server which is used to push changes across various servers simultaneously.
• Prepare RCA for server crashed, open PMR with IBM to resolve issue.
• Deployed RHEL 5.5 and RHEL 6.1 Linux VMs using VMware vSphere client.
• Provided support and monitored the performance of UNIX/Linux/Solaris Environment.
• Increased Memory/Paging/CPU for requested servers and Installed Java on Linux and Aix servers.
• Configured Dual VIO server environment, created VIO clients through HMC (vscsi and NPIV), Virtual Ethernet and setup Shared Ethernet Adapter (SEA) failover for Dual VIO servers.
• Responsible for performance monitoring using utilities such as vmstat, iostat and nmon.
• Involved in shell scripting for automating server tasks, installing and monitoring.
• Created, installed and Configured VIO server and client Lpars on IBM P740.
• Expertise in Volume management, Disk Management, software RAID solutions File system Tuning and growing.
• Managing cron jobs, batch processing and job scheduling.
• Worked closely with DBA Team in order to adjust kernel parameters as per requirements.
• Configured public network with mktcpip and backup network with smitty chinet.
• Performed system health check using TOPAS, NMON, VMSTAT, IOSTAT utilities.
• Modified the Linux kernel to add tracing probes for Config access tool.
• Experience in creating and installing standalone LPAR and VIO client LPAR using HMC.
• Built and configured RHEL 5.5Linuxservers using Kick Start server.
• Configured the GPFS clusters to keep the high availability applications running on RHEL 5.5 servers.
• Convert LPAR from Non-NPIV to NPIV (N-Port ID Virtualization).
• Installed and removed packages using yum.
• Supported Oracle DBA with RAC node configuration and installing Oracle Binaries.
• HMC management. Installation, adding frames to HMC, managing HMC GUI and command line, and apply patches .
• Excellent presentation, analytical, documentation and interpersonal communication skills.
• Provided on-call support as required, open PMR with IBM on issues.

Confidential, CA

UNIX/ AIX System Administrator

Responsibilities:

• Performed administration tasks on Prod, QA, Dev, Test servers running AIX 5.3 on P-series frames P570.
• Worked on Data Center Migrations of AIX servers from Power5.
• Created LPAR profile, installed and Configured VIO server and client Lpars on IBM P770.
• Worked on AIX LPAR Virtualization and configuration using HMC/VIOS (vscsi and NPIV).
• Configured Shared Ethernet Redundancy between the VIO servers.
• Upgraded VIO from 1.5 to 2.2.1.4 and installed fix packs.
• Managing disk storage using LVM like adding/removing disks.
• Performed migrations of LPARS between frames virtualizing internal, direct SAN disks.
• Performed system health checks regularly on Aix environment using scripts.
• Performed Network configurations, update Linux iptables and troubleshoot.
• Created scripts for automated installations of various softwares.
• Maintain Web servers, file servers, firewalls, and directory services, and set up user accounts.
• Installed and configured performance monitoring tools like SAR, tcpdump, iostat, vmstat.
• Installed and configured IBM Tivoli Network Storage Manager (TSM) client & Server software backup and recovery solutions.

Confidential, NJ

Oracle Database / Basis Administrator

Responsibilities:

• Installed Oracle binaries 10.2 for new instance, SAP Add-In CU package installation and create new database.
• Performs database re-organizations using SAP brtools.
• Create Oracle role and assign privileges to role. Export/Import of Oracle schema.
• Perform SAP transports to R/3, SRM 4.00, CRM, BI, XI and EP systems.
• Deployed XML, EAR, PAR and EPA files into EP system and troubleshoot failure transports in all systems.
• Create RFC destinations between two SAP systems for DATASYNC.
• Rebuilt Oracle unbalances indexes and generates statistics using brtools.
• Changed No-Archive log mode database to Archive log mode.
• Changed dictionary managed tablespaces to locally managed tablespaces.
• Perform RMAN zero level and incremental backup for Non-SAP databases and used brbackup for SAP online and offline databases.
• Installed stats pack and resolve performance issue in R/3 system.
• Monitoring database growth and adding/resizing space to critical tablespaces accordingly.
• Wrote password verify function to maintain SOX compliance at database level.
• Database and schema backup and restore using brtools and SAPDBA tools.
• Participate in and manage the planning, design, and modification of all new and existing databases.
• Create and modify database scripts for required maintenance and support.
• Wrote RMAN script for hot backup and recovery of hot backup.
• Create OSS message with SAP and open TAR with Oracle on issues