SUMMARY:

• 7+ years of Strong Experience in LINUX/UNIX Administration, Shell Scripting with expertise in Red - hat Linux 5, 6 and 6.5, Solaris 8, 9 and 10. HP-UX 11.i, Windows 2003, WebLogic 10.x.
• Experienced and knowledgeable in Amazon Web Services, and Azure (Cloud Computing).
• Expertise in installation, administration, patches, upgradation, Configuration, performance tuning and troubleshooting of Solaris 8/9/10/11, Red Hat Linux 4.x/5.x/6.x, AIX (4.3/5.x/6.x/7) and HP-UX 11.x and Microsoft Windows NT 4.0/2000/2003 OEL 5/6 environments.
• 4 years of experience in C, C++ on Unix/Linux Platform.
• Architected Puppet infrastructure and puppetized more than 4000 servers.
• Well experienced in writing puppet manifests and customized Facts.
• Executing daily service delivery of planning, organizing, evaluating, troubleshooting, installing and tuning of multiple large Linux systems in a centralized data center environment.
• Installation and new server build for Red hat Linux & AIX Operating System. Installing AIX in Complete over write, preservation and migration modes.
• Motivated Red Hat Linux & AIX disaster recovery expert with 7 years of relevant experience in multi-site environment.
• Expertise in Red Hat Linux Capacity and Performance Planning.
• Managing and supporting a multi-cloud environment which includes AWS, and Azure
• Experience in writing basic Shell scripts using bash, for process automation of databases, applications, backup and scheduling.
• Experience in various hypervisor technologies, to include Red hat KVM, VMWare vSphere and Microsoft HyperV
• Installed 50+ AIX 6.1 images on virtual clients LPARs using NIM master.
• Scripted in Bash, Perl, and Python, C, C++, Ruby to simplify administration tasks and for automation.
• Daily, weekly backups, running system backup using mksysb, Volume group backups with saving. Disk and volume management Red Hat Linux & AIX LVM. Replacing faulty physical volumes from rootvg or other user defined volume group.
• Expert in Jumpstart, JET, Kick start, NIM, Ignite Installation Methods.
• Involved in running security scripts to implement hardening of Linux and AIX servers to makes servers more secure by fixing the Vulnerabilities.
• Knowledge on Cloud Platform tools like OpenStack, AWS, Rackspace, Microsoft Azure, and Google Cloud.
• Working Knowledge on KVM virtualization environment.
• Experience on installing Open Stack through Packstack on RHEL servers.
• Implementing Security procedures for user authentication by using LDAP, Password less login, SUDOERS and implementing password aging policies.
• Experience in Virtualizing RHEL and AIX environments with VMWARE ESX 3.5, 4.0 and vSphere 4.1 servers on Dell PowerEdge and HP Proliant Hardware.
• Experienced in Linux/AIX Installation, Preservation Installation and Complete Overwrite Installation using CDROM and configuring Kickstart/Jumpstart Server
• Implementation and Administration of DHCP, NFS and NIS on Linux and Solaris.
• Providing 24/7 technical support to Production and development environments
• Planned, documented and supported high availability, data replication, business persistent, fail-over, fall-back Solutions using Red Hat cluster in SAN environment.
• Expertise in Installing and Managing LDAP, NIS, NFS, DHCP, SAMBA and DNS.
• Designed and implemented scalable, secure cloud architecture based on Amazon Web Services
• Experienced in Amazon EC2 setting up instances, virtual private cloud (VPCs), and security groups.
• Expertise in Migration from one flavor of UNIX to another.
• Expertise in Automation with excellent scripting skills in UNIX shell, Perl and Python.
• Excellent in troubleshooting Linux and AIX servers and perform Maintaining and Patching.
• Experienced working in Data center and had experience on Cloud Computing Environment.

TECHNICAL SKILLS:

Operating Systems: AIX 5.2/5.3/6.1, Solaris 8/9/10/11, Red hat Linux 4.x/5.x/6.x, HP-UX 11.11/21/31 and Windows 2k/2k3/2k8, VMware ESX Server 4.x/5.x, Ubuntu Linux 10.04, 12.0, Cloud Platforms OpenStack, AWS, Rackspace, Google Cloud Microsoft Azure

Hardware: DELL PowerEdge 1650,2850,2950,6400.HP DL320,DL360,DL380,DL580, HP rp3440, rp 4440, rp5470 & rp8400, rx3600, rx 6600, Compaq ProLiant DL 385,585EMC Symmetric DMX, VMAX, Clarion, NetApp FAS 3240 & 6070, Hitachi arrays, Backup Devices, Ethernet Hubs, Routers, Repeaters, Jukebox, Printers Juniper Net screen Firewall

Programming Languages: C, C++, java, JavaScript, HTML, KSH, CSH, Bash, Ruby, Python and Perl programming

Server Management: Puppet, Chef, VxVM, Nagios, Awscloudwatch Name Services

Protocols: DHCP, NIS, DNS, TCP/IP, FTP, SMTP, IPV4, LDAP, Samba and Apache Servers

RDBMS: Sybase, Oracle 7.x/8.0/9i, MySQL, SQL, Amazon Web Services (AWS), Open Stack

Storages: Sun StorageTek Arrays, Hitachi, EMC Clarion, EMC Symmetric, EMC Connectix

PROFESSIONAL EXPERIENCE:

Confidential, Newport Beach, CA

System Admin

Responsibilities:

• Managing Linux, VMware and AWS servers/VMs. Major work is related to the datacenter migration which includes setting up a new Puppet infrastructure to manage more than 4000 nodes, setting up OpsCodeChef for AWS ec2 instances, building new servers using kickstart, Deploying applications, building and managing netapps and migrating volumes across netapps, production support and on call support.
• Installation, Administration and Maintenance of Red Hat Enterprise, CentOS on VMs and physical Servers
• Responsible for Administration, Installation, Upgrading, Migration, Configuration, Troubleshooting Security, Backup, Disaster Recovery, Performance monitoring and Fine-tuning of UNIX systems on different OS levels.
• Performed boot from SAN installs of RHEL6.x and OEL 6.x on Unified Cisco Servers (UCS) blade servers.
• Supported several Servers in Dev, QA, Staging and Production environments plus primary support to all kind of issues for Red hat 5.x & 6.x Linux and VMware.
• Installing and upgrading patches and packages on RHEL 5.x, 6.2 and 6.5 servers using RPM, YUM and third party software applications
• Extensive use of Bash shell for scripting.
• Installation, Configuration and Administration of VM's in VMware ESXi 5.0,5.1 and also patch management and troubleshooting of VMware, and ESXi Servers and migration of VMs and data storage, snapshot and templates and clones
• Working knowledge of Active Directory
• Implementation of business logic using C/C++
• Implemented Bash, Ruby, Perl, Python, C, C++ Scripting.
• Experience configuring and utilizing SAMBA, HTTP, DHCP, NFS, NTP, SMTP, VSFTP and DNS
• Developed Cron jobs and Python Scripts for automating administration tasks like file System management, process management, Server reboots etc.
• Worked closely with Cloud teams to build and deploy VM's using Open Stack and
• Installation of SSH and Configuration of Key-Based Authentication.
• Experience on working with hypervisor technologies like Red hat KVM.
• Integrated the Linux environment with Active Directory providing a Single Sign On (SSO) solution.
• Actively involved in architecting the puppet infrastructure to manage more than 4000 servers.
• Written multiple manifests and also customized facts for efficient management of the puppet clients.
• Handled the VMware solutions to support multiple storage connectivity options such as FC-SAN,
• ISCSI, NFS (NAS) and internal storage.
• Worked on Open stack (Havana) creating virtual machines, tenants, customizing the server based on requirements.
• Managing and supporting a multi-cloud environment which includes AWS, GCE and Azure
• Building servers by kickstart through PXE and deploying applications.
• Writing/Modifying Manifests and applying them on the nodes using Puppet
• Ldap integration with Vmwarevcenter Single Sign On
• Building/nukeingNetapps and managing the aggregates and volumes on the Netapp Cluster
• Creating/resizing volumes, preforming volume level data copy using ndmpcopy and snap mirror
• Troubleshooting various production related outages.

Environment: Red Hat ES3/ES4/ES5, VMWARE 3.5 and vSphere 4.x/5.x, EMC PowerPath, SYMCLI 7.x, SMC 7.x, VMware ESX Server 4.x/5.x, Python and Perl programming, CRON, EMC legato Networker

Confidential, Bloomington, IL

Sr Linux Administrator

Responsibilities:

• Provide onsite and remote support for Red Hat Linux & AIX Server's.
• Provided 24x7 on call server support for UNIX environment including AIX, Linux, HP-UX, and Sun Solaris.
• Configured HP ProLiant, Dell PowerEdge, R series, Cisco UCS and IBM p-series 550,570,590,595,690 machines, for production, staging and test environments.
• Administration/installation/upgrade and maintenance of HP ProLiant DL 585 G7 using Red Hat Enterprise Linux jumpstart, flash archives and upgrade method.
• Installed and configured windows workstations, servers and Active Directory.
• Experience with provisioning Linux using Kickstart and Red Hat Satellite server.
• Extensively used NFS, NIS, DHCP, FTP, Send mail, and Telnet for Linux.
• Coordinated with database administrators while setting up Oracle 10g/11g on Linux.
• Setting up and administering DNS system in AWS using Route53
• Good understanding of Security, OSI Model, TCP/IP protocol suite (IP, ARP, ICMP, TCP, UDP, RARP, FTP, TFTP)
• Monitoring system performance, Server load and bandwidth issues using Nagios.
• Created Bash/Corn shell scripts to monitor System resources and system maintenance.
• Manage relationships between large collections of AWS machine images
• Responsible for designing the loadable path control module for in the multi path configuration.
• Performed migrations of virtual servers from Ubuntu OpenVZ physical servers to AWS EC2
• Installation and configuration of LPAR's with AIX 5.3, 6.1 on p5 servers.
• Experience on working with the Cisco UCS environment
• Advanced knowledge and experience of File system, File permission, installation, and package management, user account management (setting user accounts, deleting users, password management etc.) SAMBA, DHCP, NFS, NTP, VSFTP and DNS.
• Experience in Installation, Configuration and Troubleshooting of Tivoli Storage Manager (TSM).
• Remediating failed backups, Take manual incremental backups of failing server's.
• Upgrading TSM from 5.1.x to 5.3.x.Worked on HMC Configuration and management of HMC Console which included up gradation, micro partitioning.
• Installation and troubleshooting of IBM Director and Tivoli Endpoint
• Installing & configuring Oracle Enterprise Linux for Oracle Database Server with RAID Partition..
• Coordinating with SAN team for allocation of LUN's in order to increase filesystem space.
• Configuration and administration of Fiber card Adapter's and handling AIX part of SAN.
• Configuration of VIO server and VIO clients from Hardware Management Console.
• Good LVM skills, used LVM, created VGs, LVs, and disk mirroring.
• Responsible for Installing Security fixes and APAR's in Servers.
• Installation and configuration of NIM master server and clients.
• Implemented PLM (Partition Load Manager) on AIX 5.3. and 6.1

Environment: Red Hat Linux 4.x/5.x/6.x, AIX - 5.3/5.2, SUN Solaris 10/9/8, Win 2003/2000, HP-UX 11.i, vSphere 4.1, IBM p-series 550,570,590,595,690, AWS EC2.

Confidential, Fairfield, CT

Linux Administrator

Responsibilities:

• Responsible for installation, troubleshooting and maintenance of 1800 Red Hat/SUSE servers and 1000 servers running Solaris 10/11 on x86 and SPARC.
• Designed and managed AIX related operation systems, SAN infrastructure along with the necessary upgrades.
• Provides overall support and maintenance of operating systems and network connectivity for all AIX systems.
• Expertise in establishing and documenting the procedures to ensure data integrity including system fail-over and backup/recovery in AIX operating system.
• Configuration, management, and support for advanced AIX functionality which includes: Power HA, NIM, NPIV, GPFS, WPAR.
• AIX LPAR Virtualization installation and configuration, research, automation, and standards, for systems using HMC/VIOS (vscsi and NPIV). (AIX on large frame P-series: p5, p6, p7).
• Maintained availability, increased capacity & performance of production machines by upgrading their hardware (Disks, CPU, memory, I/O board, power cooling unit, mother board etc.) & firmware.
• Involved in implementing Security by implementing IP Tablesm, SSH root login disabling, PAM Authentication, disabling services and ports on Linux and Solaris servers.
• Involved in documenting Security implementing procedures on Linux servers.
• Experience in Installed, Configuring and Maintaining Solaris 9/10/11.
• Experience Virtualizing Red Hat servers using vSphere 4.1 and managed ESX servers using vCeneter and also worked with ESX Cluster and vMotion.
• Experience working in Cloud infrastructure using Hitachi/EMC SAN and HP Blade Center servers.
• Writing Shell/Perl Scripts for deployment tasks like Installation, Configuration of Core and Layered Products and Peer-review tasks (employed to maintain the standard of quality of servers) for all the New Build Servers.
• Installed and Configured Red Hat Linux and Solaris and booting from SAN.
• Worked with IBM X series, HP DL, BL and Dell Power Edge Model servers.
• Configuring different RAID groups assigning different RAID levels in EMC Storage.
• Supported and managed IBM series servers (P5/P6/P7) using HMC version 6 and 7.
• Migrated different applications like SAP & Databases like Oracle from HPUX to Linux.
• Implemented security methods using security hardening techniques like software patching to minimize the known vulnerabilities, OpenSSH, TectiaSSH and PKZIPc for secure logging and transmission of data and sudosh for auditing.
• Deployed Puppet, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure.
• Managed 100 + UNIX servers running RHEL, HPUX on Oracle HP and Dell server including blade centers.

Environment: AIX 5.3/5.2, SUN Solaris 10/9/8, Win 2003/2000, HP-UX 11.i, SYMCLI, ECC 5.2, NavisecCLI, Navisphere Manager, Web tools, Brocade, Power Path, vSphere 4.1, TLS/SSL protocol suite, Hitachi/EMC SAN, HP Blade Center servers.

Confidential, Bloomington, IL

Linux System Administrator

Responsibilities:

• Expert in Kickstart and Jumpstart for Linux and Solaris Installation Methods
• Worked on SAN & NAS devices like EMC Clarion’s, and NAS Devices like NetApp filers.
• Worked on NetApp filers like FAS 3240 & 6070 running DATA ONTAP 7.x.
• Implemented FTP server with Ncftp and ssh2 (Tectia SSH) keys for file secure transfer file transfers to/from the clients, which is Internet-facing. Security was implemented with HIPAA compliance.
• Involved in applying Patches, Installing patch bundles on Solaris, AIX and Red hat Linux.
• Configured VMware and installed several Linux and Windows Operating Systems according to the client needs. Also involved in maintenance and Troubleshooting of VMware Network Monitoring Using Nagios tool
• Experience with Linux based POS systems and devices and drivers
• Upgraded Red Hat Linux servers from 5.2 to 5.4.
• Involved In Migration from to Red Hat Linux.
• Deployed patches and upgraded Red Hat Linux servers and SUN servers to their latest versions.
• System performance tuning, User administration and security.
• Scheduling Backups, Monitoring & taking failover test of Veritas Clustered servers
• Installed and configured Apache ANT for automated build processing using RPM
• Experience in Installation and configuration of JBOSS on Red Hat Linux servers.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets
• Experience in Servers consolidation and virtualization using UML Linux, XEN and VMware virtual infrastructure, VMware ESX 2.x, VMware Vcenter.
• Applying store system integration best practices to provide in store platform that meets the needs of the business, specific to POS

Environment: Solaris 9 and 10, RHAS 4, 5, Oracle Linux 5, OVM 2.2.1, OracleVM Manager, NetApp, SAN, Solaris Volume Manager, VERITAS Net Backup, Nagios, Cacti, HP Proliant Blades, HP iLO, Sun Fire 6800, V490.

Confidential, New York, NY

Linux/Solaris Administrator

Responsibilities:

• Installation, Configuration, Upgradation and administration of Windows, Sun Solaris, Red Hat Linux and Aix.
• Linux and Solaris installation, Administration & Maintenance.
• User account management, managing passwords setting up quotas and support.
• Worked on Linux Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
• Responsible for configuring and managing Squid server in Linux and Windows.
• Configuration and Administration of NIS environment.
• Involved in Installing and configuring of NFS
• Worked with Net filter IPtables for host-based security firewall rules, Pre-Routing and Post-routing rules.
• Installation and Configuration of Linux and Solaris operating systems on large distributed environment.
• Implemented remote installation on servers using Red Hat Linux Kickstart and jumpstart/JET Servers.
• Installed and configured Red Hat software’s and 3rd Party tools using RPM’s and YUM on Red Hat servers.
• Involved in creating volumes on raid groups and aggregates and sharing to Windows and UNIX servers using CIFS & NFS.
• Experience working Snap mirror & Snapvaults for backup and replication purposes on NetApp devices.
• Package and patch management on Linux servers.
• Kernel tuning, Writing Shell scripts for system maintenance and file management.
• Worked on Logical volume manager to create file systems as per user and database requirements.

Environment: Solaris 8, 9 and 10, RHAS 3, 4, 5, HPUX 11.11, 11.23, 11.31, VMware ESX 3.5 and vSphere 4.0, AIX 5.2, 5.3, 6.1, NetApp, EMC, SAN, VERITAS Volume Manager, VERITAS Cluster Server, VERITAS Net Backup, Hitachi, Remedy (Pac2000), HPSA (Opsware v7.5/7.83), OVO and OVPA agents.