SUMMARY

• Over 15 years of professional UNIX experience in AIX & POWER Systems Administration, 10 Years of Linux Administration, 4 years of Solaris, 3 years as Technical Lead, Limited Support experience with Windows 2012
• Expertise in AIX 5.3/6.1/7.1/7.2, Red Hat Enterprise Linux 5/6/7/8, Experienced in SUSE Linux 12/15, UBUNTU Linux 16/18, VMWare ESXi 5.x/6.x, Hands on experience in Solaris 5.9/5.10.
• Extensive IT infrastructure experience and in depth knowledge having worked in Datacenters and on various hardware including IBM Power Systems, Blade & Chassis Systems including HP Hardware for Linux, SAN & Network switches.
• Excellent client relation skills and the drive to complete tasks effectively and efficiently as well as the ability to communicate effectively with all levels of management and the client community.
• Excellent written & Verbal communication skills and ability to work closely with clients at various management levels even during escalations and providing detailed analysis on issues.
• Ability to technically lead and mentor a team Onsite or Offshore independently and driving them towards excellence.
• Proactive working style in planning as well as identifying and prevention of any issues.
• Dedicated, focused, independent & self sufficient working style in Analyzing & troubleshooting issues.
• Proficient in writing Shell/Bash scripts, Install/Configure ANSIBLE for Automation.
• Scripting includes automating for various frequent tasks like user creations, software/package installations on large number of hosts, service recycles, checking large number of servers for configuration details or issues like dual paths and missing paths for storage devices, scanning and creation of filesystems, creation of oracle ASM devices.
• Extensive experience and knowledge in AIX Patching (TL / SP Upgrades ), Troubleshooting & Restoration.
• Perform security vulnerability scans across AIX & Linux platforms in client environments, plan and implement fixes with necessary modifications and / or patches. Identifying and fixing vulnerabilities include issues with various kernel settings, user security issues, file and folder management, package or software related security issues reported by vendor.
• Extensive experience in planning & performing AIX Migration Upgrades from AIX 5.3 to 6.1 / 7.1 /7.2 using NIMADM method for minimum downtime.
• Extensive experience in Power systems migration from POWER5 to POWER6 ( Standalone migration ) and POWER6 to POWER7/8/9 ( Using Live Partition Mobility LPM ).
• Expertise in installation, configuration, tuning, recovery, upgrades & troubleshooting of IBM AIX using Standalone and Logical Partitioning (LPAR).
• Expertise in installing AIX via Network Installation Manager (NIM).
• Expertise in implementing AIX Virtualization which includes Creating VIO Servers and VIO Client LPARS, Administering and Troubleshooting issues of LPAR’s, VIO’s, DLPAR’s, HMC’s & Dynamic resource allocations.
• Expertise in AIX LVM and Creation/Modification of VG’s, LV’s, Filesystem’s, including VG and LV Mirroring and troubleshooting issues.
• Extensive experience in Multipathing software MPIO, Powerpath, HDLM to manage various storage vendors and disk subsystems.
• Expertise in installing, configuring, maintenance and troubleshooting of High Availability (HA) system based on IBM HACMP, PowerHA & Power HA System Mirror with CAA.
• Expert in Red Hat kickstart installations including configuring RAID 1 local drives for redundancy.
• Build/Deploy new Linux VMs on VMWare using OVA/OVF file.
• Storage & Network management for VMs.
• Perform vMotion to other ESX hosts.
• Expert in RHEL 7 and systemctl services, LVM, XFS Filesystem’s, multipath, SAN & network.
• Experience with Red Hat Linux 5/6/7 performance and kernel tuning parameters.
• Red Hat Linux server patching using Satellite servers and Package / RPM management with YUM.
• Experienced in Linux troubleshooting from Single user / Rescue / Maintenance modes for boot issues.

TECHNICAL SKILLS

Operating Systems: IBM AIX 5.3/6.1/7.1/7.2, Red Hat Enterprise Linux 5.x/6.x/7.x/8.x., VMWare ESXi 5.x/6.x, SUSE Linux 12/15, UBUNTU Linux 16/18 & SUN Solaris 5.8/5.9/5.10.

Hardware: IBM p - Series (p520, p550, p570, p650, p690, p770, S814, S822, S824, S924, S922), HMC ( 7/8/9 ), VIO, LPAR, DLPAR, IBM System X (x336, x346, x366, x460, x3650, x3690, x3850, x3950), HP ProLiant BL and DL Series Servers, IBM Blade Center HS23, SUN (V440, V490, V890, E6900) SUN SPARC ENTERPRISE (M4000, T5240), SUN ULTRA E250, E450, E3500, E6000, E10K, FUJITSU (250, 450, 650).

System Admin Tools: IBM VIOS 2.1/2.2/3.1, IBM HACMP 3.0/4.0/4.5/5.4, PowerHA 5.5/6.1/7.1/7.2, Red Hat Clustering, Veritas Clustering, Red Hat Satellite 6, YUM, RPM, APT, ZYPPR, TSM Backup, VMware vSphere 5/6, SPLUNK & Tivoli monitoring.

Automation: KSH/BASH & ANSIBLE.

Network Protocols/Services: TCP/IP, UDP, HTTP/HTTPS, RMI/IIOP, SOAP, SSL, SMTP, ICMP, IMAP, POP3, NIS, NIS+, NFS, DNS, DHCP.

PROFESSIONAL EXPERIENCE

Confidential

AIX/Linux Lead Consultant

Responsibilities:

• Architect & lead a project to migrate 200 AIX systems (P7, P8 with AIX 5.3, 6.1 & 7.1) to 2 new datacenter locations.
• Evaluate current design and architecture of the systems in the datacenter.
• Develop and design the architecture for new Power systems to be built in the new datacenters. Create technical design documentations.
• Develop migration strategy for AIX OS and application / DB data from old to new datacenter across WAN.
• Procure the hardware and deploy the systems in datacenter with highly redundant infrastructure connections and performance (10G Fiber NIC and SAN) to handle ERP applications.
• Build dual HMC’s, dual VIO’s and LPAR profiles to match the old AIX systems.
• Restore the AIX servers in new datacenter with the mksysb from old datacenter. Build application filesystems to match the old servers and restore the data using rsync, tar, data replication, etc…
• Provide operations support for RHEL 7/8 VM’s and Physical Servers running Oracle DB and WebLogic applications including monthly patching.
• RHEL 8 Server builds using Kickstart for physical servers and using custom templates to deploy VM’s in vCenter.
• Perform post build QA and security hardening before completing customer specific tuning and setups.
• Assist the app / dba teams with migrations from old server using OS tools like backup and restore, rsync, tar, etc..
• Review alerts and Incidents for performance issues, analyze Linux server performance historical data and suggest solutions and improvements including kernel tuning.

Confidential

Linux Technical Lead

Responsibilities:

• Support a large scale RHEL (6/7/8 ) VM & Physical server environment.
• Build and deploy VM’s on need basis under ESXi hosts running VMWare.
• Migrate, clone and move Linux VM’s as needed for performance issues.
• Analyze and report performance issues with Linux servers.
• Patch the servers on monthly basis on all Linux environments to be security compliant using BigFix.
• Build, deploy and support RHEL physical servers on IBM blade center H and X series rack mounted servers using boot from SAN, multipathing accessing EMC storage.
• Firmware upgrade and maintenance support for IBM blades.
• Identify service improvement areas for Linux and develop technical plans to address / remediate under proactive problem management strategy.
• Linux kernel and firewall tuning for network related access or performance issues.
• VM snapshot recovery, CPU & memory resizing, disk management and performance monitoring.
• Ansible automation implementation for various routine operations.

Confidential

Lead AIX & Power Systems Refresh Engineer

Responsibilities:

• Assess the currently out of support AIX systems (HMC, Power S824, AIX & Power HA) for upgrade feasibility.
• Evaluate current environment and check for existing issues and risks for upgrade. Perform sanity reboots to mitigate underlying unidentified issues.
• Design and document available upgrade path for each component.
• Plan and implement upgrade of each component as per the pre-requisites for each upgrade hop. This includes HMC upgrade from V8 to V9, S824 firmware upgrade, AIX 6.1 to 7.1 and Power HA 7.1 to 7.2 which involves multi hop upgrade procedure.
• Upgraded the VIO servers from 2.2.3.4 version to 3.1.2.21.

Confidential

Sr. AIX Refresh & Linux Build Engineer

Responsibilities:

• Large scale refresh of Honda’s POWER5, POWER6, POWER7 infrastructure to new POWER9 ( S922 ) machines including AIX and HA refresh to latest versions.
• Review the current infrastructure, analyze POWER 9 migration requirements and document various available migration strategies for various scenarios of current server OS and Hardware combinations.
• Create technical design document for POWER9 infrastructure setup.
• Setup dual physical and/or virtual HMC’s for redundancy with latest version of HMC level ( V9 ).
• Perform initial setup in data center and cabling for the new machines and discover.
• Work with SAN & Network teams to complete the infrastructure configurations ( SAN zoning, Network VLAN’s required, etc.. )
• Create dual VIO server profiles, install and configure VIOS 3.1 with latest patches.
• Create virtual adapters, EtherChannel adapters and SEAs for Production and Backup networks.
• Perform security tightening and standardization/tuning as per the security baseline requirements.
• Create and configure weekly backup cron.
• Install latest supported Python version on all UNIX servers to enable for ANSIBLE.
• Create and Configure ANSIBLE playbooks for automation across the environment.
• Build an AIX lab server per datacenter to test both the SAN and Network infrastructure bandwidth and redundancy on the newly built P9’s.
• Perform Live Partition Mobility testing using the Lab server between the new P9’s to confirm the migration readiness of the machines from the Old Power machines.
• Identify the current servers in scope of migration to P9 and list the LPM and Non-LPM method prerequisites to be met before migrating them to the P9’s.
• Perform all LPM prerequisite tasks which include PowerVM license, Convert all physical and VSCSI drives to SAN, ensure no Physical IO adapters assigned. Also ensure the current SAN disks are on NPIV and zoned to the inactive WWPNs.
• Perform all Non-LPM prerequisite tasks which include OS patching, OS upgrades to P9 supported versions and create LPAR profiles on the destination P9 for migration via disk swing method.
• Perform PowerHA migrations from 6.1/7.1 versions to Latest 7.2 version using rolling upgrade.
• Convert current TSM servers on virtualization to physical for consolidation and increase performance by using more dedicated resources which includes complete redesign of infrastructure and identifying various migration strategies and compatibility of OS, HW and Firmware supported.
• Fully support any additional Ad-hoc project requests like additional new builds, Ansible deployment on 500 AIX servers.
• Support Red Hat Enterprise Linux VM’s ( including cloud ) and Physical servers running 6.x & 7.x
• Build new RHEL 7.x servers on HP ProLiant servers.
• Deploy new Linux VM’s in VMWare ESX including build, cloning, templates & OVF files.
• Manage VM’s between ESX hosts clusters with vMotion, Migrate and HA functionalities.
• Configure and Upgrade ILOM for new Linux Physical servers for build’s.
• Work with SAN and Network teams for cabling of new servers.
• Configure RAID 1 Local drives and Installation of Linux via Kickstart.
• Configure network including bonding & VLANs.
• Perform specific post build QA and customer turnover.
• Perform OS patching and Hardware firmware upgrades to fix vulnerabilities using YUM or Satellite.
• Troubleshooting and providing RCA for wide ranging issues like performance, server crashes, login failures, NFS issues, connection and DNS issues.
• Work with Redhat and HP as needed on issue basis.
• Complete Linux LVM management including creation of EXT4/XFS Filesystems using Virtual or Storage disks, NFS, NAS mounts on local and SAN storage using multipath or EMC powerpath.
• User Administration using AD/LDAP/Local.
• Installation of any open source RPM’s required for applications & OS.
• Manage backup and restoration.
• Perform automations where possible using scripts, cron, ansible/puppet.

Confidential

Sr. AIX Migration Engineer

Responsibilities:

• Migrate AIX servers running on POWER 7 to POWER 8 ( E850 ) hardware.
• Migrate AIX from version 7.1 to 7.2.
• Migrate LUN’s from EMC VPLEX to EMC XIO Storage using LVM.
• Build virtualized environment with highly redundant Dual VIO servers.
• Perform hardware migration to new hardware by building new LPAR’s.
• Perform OS migration by freshly installing AIX 7.2 ( App team installs and configures upgraded version of their App/DB ).
• Migrate the data volumes from old to new server via export, rezone and import.
• Perform OS upgrade from AIX6.1 to 7.2 via NIMADM for servers running out of support.

Confidential

AIX Architect, Build & Migration Engineer

Responsibilities:

• Migrate from POWER 7 and POWER 8 to New POWER 9 ( S924 ) hardware.
• Migrate the AIX from 7.1 to 7.2
• Upgrade old POWER7 and POWER8 servers to AIX7.2 to repurpose.
• Assist installing new hardware and complete initial setup which includes racking the HMCs & machine, cabling, network setup.
• Establish discovery of the new hardware into the network including machine discovery into HMC’s.
• Upgrade the HMC and Machine firmware to the latest available level.
• Create 2 VIO servers on each machine with the required CPU, Memory and IO adapters.
• Load the OS on the VIO servers and upgrade to the latest version.
• Perform the necessary virtualization for scalability and resource sharing.
• Work with network team and Configure network communication for the servers using best practices for maximum performance with accepted redundancy by implementing ether-channel, shared Ethernet adapters, active-passive adapters.
• Perform network tuning for optimal performance of the network adapters with parameters like media speed, duplex settings, jumbo frames, large send and receive, multicast and broadcast addresses.
• Assign required virtual LAN’s for accessing multiple networks.
• Configure required storage as per the requirements and current values.
• Perform fault tolerance and failover testing to evaluate the resiliency of the new hardware to hardware faults.
• Create LPAR partitions with appropriate resources for the application requirement.
• Assign the boot disks, storage adapters and network adapters.
• Load the operating systems and patch to the latest levels to fix any security issues that can effect the hardware components.
• Perform the QA checks to match with the security baseline.
• Migrate all the data including data structures, peripherals, ownerships and permissions to the new hardware.
• User account management. Create SUDO access for all existing accounts.
• Create scripts for weekly mksysb backups, nmon data collection, log rotation and management and implement them via automation.

Confidential

UNIX Track Lead / Sr. AIX & Linux Engineer / Solaris Admin

Responsibilities:

• Onsite Track Lead for TIAA project managing highly diverse environment of 8000 servers including AIX / Linux / Solaris and managing a team of 20 SA’s ( Offshore & Onsite ) working 24/7.
• Managing client’s day to day operations, providing technical guidance to the team, documentation of various SOP’s as per client requirements, process improvement with the extensive knowledge acquired by working for almost 3 yrs with the client.
• Work with client management, technical and engineering teams on identifying common environmental, repeat issues and providing solutions to close the gap from design standpoint.
• Experience in Training new team members on roles, daily activities as well as communication methods with the client’s management and maintaining composure during an outage situation.
• Working and Managing various projects for client including TSM to EMC Networker migration, Hitachi to EMC storage migration, Samba and Java vulnerabilities remediation.
• Responsible for managing AIX 5.3 / 6.1 / 7.1 environment of 600 servers and technically leading / mentoring all AIX SA’s within the team both onsite & offshore.
• Support large scale of Red Hat Enterprise Linux VM’s ( including cloud ) and Physical servers.
• Regular patch, firmware and hardware maintenance of Linux servers.
• Configure and Upgrade ILOM for new Linux Physical servers for build’s.
• Work with SAN and Network teams for cabling of new servers.
• Configure RAID 1 Local drives and Installation of Linux via Kickstart.
• Perform TIAA specific post build QA and customer turnover.
• Complete LVM management including creation of Filesystems using Virtual or Storage disks, NFS, NAS mounts.
• Backup and restore using TSM as well as EMC Networker.
• Server Patching using satellite ( Linux ) and NIM, Alt disk, In-line ( AIX ).
• Responsible for complete AIX infrastructure services support on various hardware platforms including P5, P6, P7 & P8 machines, IBM Blades and H Chassis, various clusters including PowerHA, CAA, Oracle RAC, GPFS, Power VM & Shared Storage Pool Clusters.
• Responsible for managing and assisting the team 24/7 with RHEL 5/6/7 infrastructure consisting of 6000 Physical ( HP blade and rack, Exadata ) & Virtual servers ( VMware & Cloud ) with day to day activities.
• Guiding the team and managing RHEL Physical Server builds along with infrastructure teams end to end ( i.e. Server racking, Cabling, Networking setup, OS installs using kickstart, SAN setup, Post build QA and Final customer turnover ).
• Driving AIX Upgrade project to upgrade legacy out of support AIX 5.3 servers to AIX 6.1 & AIX7.1 and performed numerous migration upgrades via NIM servers using “NIMADM”.
• Configuring and Managing SAN devices using Powerpath and HDLM.
• Patching GPFS (3.5) and VIO SSP (2.2.3.50) clusters.
• Configuring SEA on VIO servers with VLAN tagging and testing for failover.
• Configuring NPIV and Mapping Virtual Fiber Channel adapters to LPAR’s across the environment.
• Managing & Troubleshooting Power HA clusters (v5.4, 6.1 & 7.1).
• Server restore / rebuild / clone as and when needed.
• Performing AIX kernel changes including Swap space, ulimits, memory tuning, network tuning as needed by application or DB teams to optimize performance.

Confidential

Sr. AIX/LINUX Systems Administrator/Transition Engineer

Responsibilities:

• Installation, Migration and Configuration of AIX 5.3/6.1 on p-Series servers using mksysb and NIM servers.
• Adding/Deleting/Dynamic resource allocation (CPU, RAM, and IO Adapters) for LPAR’s using HMC, VIO and Micro-Partitioning.
• Creating LPAR’s and Profile on p5 and p7 hardware (p570 & p770).
• Creation and Modification of VG’s, LV’s, FS’s in both Standalone and Cluster (HA) LPAR’s.
• Regular upgrades to VIOS (v1.5 and v2.1) and HMC’s.
• Creating, Modifying & Removing standalone and cluster file systems using IBM HACMP and PowerHA.
• Migration of HACMP 5.4 to PowerHA 5.5 and later PowerHA 6.1.
• Install and configure RHEL 5/6.
• Perform QA on Linux servers to set user access, kernel & memory tuning, security policies.
• Add, configure and manage EXT4 filesystems with storage from SAN and multipathing.