SUMMARY:

• Over 6 years of IT experience specialized in various Versions of UNIX Red Hat Linux 7.x/6.x/5.x, SUSE, Debian, Solaris 8.x/9.x/10.x, IBM AIX 7.x /6.x/5.x .
• Extensive experience in installation, configuration and administration in physical/virtualized Linux/Solaris/AIX environments.
• Expert in building Red Hat Linux physical and virtual servers migrating and/or upgrading Linux servers from one OS release to another.
• Experience in implementation and maintenance of VMware, DNS, DHCP, NIS, NFS and SMTP.
• Proficient in Linux Utilities: KICKSTART, SSH, FTP, AUTOFS, Quota, User, Process, Memory, Log, Disk, Files Management and text processing tools.
• Expertise in creating/increasing/decreasing/mounting/un-mounting file systems like LVM, SVM, VxVM and troubleshooting disk space issues.
• Experience with system monitoring, load balancing.
• Package management using RPM, satellite management and YUM tools.
• Installation, Configuration administration of Solaris 9.x,10.x and 11.x and hands-on experience with Solaris Volume Manager.
• Experience with dynamically adding and removing SAN storage on Solaris.
• Experience working in NFS/NAS, Storage Area Networks SAN , SSA disk storage environment. Extensively performed SAN Migration.
• Coordinating with SAN team for allocation of LUN's in order to increase file system space.
• Experience into NetApp FAS 2020, 2050, 3040, 3140, 6040 series Filers, IBM N-SERIES.
• Experienced with Storage Administration like EMC SAN Administration. Worked on EMC disk storage to allocate disk space, configuring LUNS on server side, Backup maintenance through TSM using Tape libraries.
• Administration of NetApp infrastructure using Filer view, system manager and CLI.
• Knowledge on Planning, preparation and implementing data ontap upgrades and configuring Quotas for particular qtree and users on NetApp Filer.
• Expertise in Creating and Managing the Aggregates, volumes and managing the qtrees.
• Knowledge on working with snap drive for LUN management on windows environment and good work exposure on protocols CIFS, NFS, ISCSI.
• Installation, Configuration administration of Solaris 9.x,10.x.
• Hands on Experience in Installation, configuration, maintenance and administration of PowerHA/HACMP on AIX 5.x/6.x/7.x.
• Experienced in configuring and supporting Logical Partitions/Micro Partitions LPAR/DLPAR via HMC Hardware Management Console .
• Installation, administration, configuration and testing of VIO Server and VIO client LPAR'S.
• Good understanding of error logging subsystem and Performance Monitoring tools like vmstat, iostat, netstat, topas, and lparstat on Linux/Solaris/AIX operating systems.
• Extensive use of Resolved Application Startup problems, PATH problems, Name conflicts, TCP/IP and Networking Problems in AIX.
• Experience in administrating ESXi servers and applying security patches to the ESXi servers.
• Experience in using various network protocols like HTTP, UDP, POP, FTP and SMTP.
• Expert in troubleshooting the Linux server's, resolving the boot issues using rescue methods.
• Experience in NIM installation, setting up NIM servers , defined NIM clients on NIM master server.
• Experience in applying patches to the AIX servers at various TL and Service pack Levels.
• Expert in ESXi servers using the Vsphere client and Vcenter for managing the multiple ESXi servers and performing the vmotion.
• Worked on Creating, Upgrading and Maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Experience in Installing, configuring and maintaining apache/tomcat, samba, sendmail, Web Sphere Application Servers and configuring splunk agent on UNIX platforms.
• Experience with automation and configuration management tools such as Chef, Ansible, Puppet.
• Experience in writing Shell scripts using ksh, bash, perl for the process automation of databases, applications, backup and scheduling to reduce both human intervention and man hours.
• Worked on Linux based systems administration skills in a Cloud Computing and Virtualized environment for AWS.
• Expertise in AWS, experience in implementing new AWS systems and migration of existing systems to AWS.
• Experience supporting 24 7 production computing environments. Experience providing on-call and weekend support.

TECHNICAL SKILLS:

PROFESSIONAL EXPERIENCE:

Confidential

Unix/Linux Administrator

Responsibilities:

• Installed, configured and administrated UNIX/LINUX servers, including the design and selection of relevant hardware to support the installation/upgrades of RHEL, Solaris on X86/SPARC operating systems.
• Upgrades on Linux operating systems and hardware maintenance on HP and POWER servers like increasing memory, disk, replacing failed hardware.
• Extensive experience in Linux disk management using LVM.
• Created and maintained Linux file systems in LVM using commands pvcreate , vgcreate , lvcreate , vgextend and lvextend.
• Monitored disk i/o's for the entire Linux environment using native and 3rd Party tools.
• Configuration and Administration of DNS, NIS, NIS , DHCP, FTP, Samba Servers. Security layers like SSL, SSH, HTTPS, SFTP.
• Performed daily housekeeping functions, such as establishing new accounts, creating and resetting passwords, writing scripts perl, bash , performing system backups and recovery and installing software patches and updates.
• Support for Linux/Unix system administration, operational support and problem resolution for server systems.
• Creating NFS server, mounting and un-mounting NFS server, sharing the file system over a network using NFS.
• Installed, Configured Mysql in different Linux operating systems like RHEL and oracle Linux
• Experienced in monitoring and debug performance issues on different OS Linux RHEL Centos .
• Participated in installing and configuring of UNIX/Linux based Oracle 10g products.
• Kernel parameter tuning and Performance Monitoring using tools like Glance plus, vmstat, mqstat and addressing swap issues in Redhat Linux servers
• Experience on configuring Asynchronous, Synchronous Snap Mirror and configuring Snap Vault.
• Converting snap vault destination copy into snap mirror copy on client request or for disaster recovery, managing takeover and giveback for Active/Active Configuration.
• Installation, configuration, Troubleshooting and administration of AIX 5L, 6.1 7.1 operating systems
• Experience in configuring and use of NIM server for AIX and VIO servers deployments.
• Monitoring the replication daily basis performing Snap restore for volume and files based on client request and working with Flex Clone and LUN clone for test development environment.
• Creating and managing new LUNs ISCSI and assigned to Windows and UNIX hosts, configuring snapshots and scheduling them accordingly, providing Data protection using Snapshot management.
• Scanning the newly assigned LUNs to the serves and assigning them to volume group and increasing the file system using Red Hat volume manager.
• Created Storage Group, Zones, volume groups, and different RAID's using EMC Utility and responsible for backup and recovery using NetApps Snapshot.
• Mounting and unmounting the NetApp storage LUNs to the Redhat Linux servers and troubleshooting the issues encountered.
• Key participant in implementation and integration of three new data centers including physical, logical and application level testing and support and developed and executed test plans for VERITAS Cluster with NetApp SAN.
• Checking the Logs for errors in the NAS boxes, having knowledge on snaplock volumes, thin provisioning and Fabric switch zoning Brocade .
• Performed SAN migration on 75 database server from DS8300 to NetApp disks storage.
• Configuration and administration of mail server, Send mail, and SNMP/POP.
• Participating in weekly change control meeting to present production changes.
• Designing System Requirements, Designing Storage requirements, Configuration Management/Change control/Release management.
• Installing Veritas Volume Manager 4.0 and configuring Disk Groups, Volume Groups and Logical volumes to manage the storage resources.
• Experience on multi-store VFILER management, Vol Copy, ndmpcopy, Vfiler creation, adding, removing resources to vfiler's, vfiler migration and DR vfiler configuration.
• Knowledge on Manual upgradation of disk Firmware's and disk shelf Firmware's.
• Worked on configuration management utilities like chef puppet.
• Implemented and done maintenance of the cloud infrastructure and systems.
• Worked on Amazon Web Services, including EC2, S3, RDS, Elastic Load Balancing.
• Worked on utilizing Virtual Private Cloud to create secure multi-tiered environment.

Environment: Linux 7.x/6.x/5.x, Oracle 10g/11g, SUN Servers, SUN Fires, Linux, Jump Start, Autosys, Veritas Volume Manager VVM , LDAP, EMC Storage SAN, NetApp, Veritas Cluster Server VCS , VMware servers and AWS.

Confidential

Unix/Linux System Administrator

Responsibilities:

• Installation, Configuration and Upgrade of Solaris 8.x/9.x/10.x and, Redhat Linux RHEL 5.x/6.x/7.x operating systems.
• Administration and support of homogeneous production and development server infrastructure of multiple flavors of Linux.
• Performed Building up of servers, deployment activities, and environment support including installation, configuration diagnostics, planning and upgrades.
• Responsible for design and implementation of IT infrastructure such as data center, servers, storage, backup, and virtualization.
• Setup of full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, FTP, TCP/IP, ARP, Applications and print servers to insure optimal networking and printing functionality.
• Worked on FTP servers for sending and receiving files between local and remote servers.
• Systems log management, Data backup and restoration with UNIX native tools tar/dd .
• Administration responsibilities included user, group, disk, printer, security management, incident troubleshooting, file system maintenance, backup scripting and automation, file sharing permissions, software maintenance, file sets, program fixes and keeping the system software releases up-to-date.
• Worked on installation of Power path on all Linux, AIX and Solaris boxes.
• Designing, installing, Configuring and Administration HACMP 4.5, 5.1, 5.2, 5.3, 5.4, 5.5 IBM PowerHA.
• Experience in Migration of HACMP 5.3, 5.4 and 5.5 using Node-by-Node migration without changing cluster setup, responsible for migrating HACMP form v5.4 to 5.5 and to PowerHA.
• Performed server new builds installation and application deployment on AIX and Solaris boxes, functional and unit manual and automated testing.
• Install golden image of AIX 6.1, 7.1 using Storix System Backup utility, upgrade of AIX TL and SP to latest level using NFS mount and alt disk.
• Installation of patches, Security fixes, packages on AIX, Linux and Sun Solaris Servers
• Developed automation scripts to install AIX operating system and Oracle components
• Configure Quotas for particular qtree and users on NetApp Filer and supporting NetApp storage infrastructure for global customers.
• Physical Storage Management: Assigning disk ownership, RAID-DP, Disk sanitization, De-duplication.
• Design and Deploy In house Private Cloud using eucalyptus and OpenStack on Centos and Ubuntu Operating system.
• Developed Cron jobs and Shell Scripts Shell, Python for automating administration tasks like file system management, process management, backup and restore.
• Repaired bad spots on the disk using repair and analyze. Used format and fdisk/Parted for disk configuration and disk crash recovery.
• Worked with Amazon Web Services AWS infrastructure including EC2,S3, EBS, EIP, ENI, ELB.
• Wrote Python and Shell scripts to monitor installed enterprise applications and to get information from the logs and database in the required format and other daily activities and jobs.
• Providing 24 7 on-call support on rotation basis and Handling High priority incidents through bridge calls.

Environment: Linux 7.x/6.x/5.x, Oracle 10g, SUN Servers, SUN Fires, Linux, Jump Start, Shell Script, Autosys, LDAP, EMC Storage SAN, Veritas Cluster Server VCS , Veritas Volume Manager VVM , VMware servers,AWS.

Confidential

Unix Administrator

Responsibilities:

• Responsible for supporting Linux System Administrator customers with RHEL/Centos/Ubuntu operating systems questions and problems via telephone, FAX, and email.
• To provide ongoing support in systems management and administration of LINUX/UNIX in global-scale environment.
• Provide rotational on-call Tier III support responsibilities. Production Support: Provided 24x7 supports for various divisions within the Company and resolve all production issues in a high pressure and time sensitive environment.
• Issues related to NFS, NIS, LVM, Grub corruption, configuration maintenance of RAID level 0,1,5 , troubleshooting VERITAS Volume Management and cluster server environment.
• Planned, designed and implemented 4 Node Veritas Cluster on E6800. Troubleshoot Veritas Cluster issues which arose because of different cluster versions 3.2 3.5.
• Researched the data base for known problems or tested the customers problem on a test system in the same environment. Aided customer in resolving their problem using the tools in the Linux OS or from the command line.
• Performing System Storage management/LVM tasks like creating volume groups, PV's, LV's and jfs/jfs2 File systems, mirroring VG's, LV's and mounting File systems.
• Managing the user environment by adding, modifying and removing user accounts from the environment and limiting access to appropriate nodes.
• Test and install various patches Fix Packs on the servers to solve the problems encountered by the applications running on the servers.
• Migrate application and other software modifications from the development environment to production, Used NIM to install AIX and do OS upgrades.
• Optimized performance by tuning Unix OS, kernel, memory, I/O, Database, Applications and Networks.
• Installed, configured and supported RAID 0, RAID 1, RAID 0 1, and RAID 5 on SAN arrays.
• Troubleshoot all hardware and software issues for Sun Enterprise Servers.
• Decommissioned small and obsolete servers and consolidated them into one large server.
• Installed EMC Power Path and involved in Storage Area Network SAN administration
• AIX 5.x and 6.xMPIO support for multi-path Fiber Channel storage subsystems, as well as AIX servers configured with multiple Fiber Channel FC Host Bus Adapters HBA on a Storage Area Network SAN .
• Planned, Documented and implemented Disaster Recovery policies.
• Used Remedy Tool in Production environment which strictly complied with Problem/Change Management policies of the organization.
• Developed shell scripts for automating routine day-to-day tasks, management reports, set up alerts for server resources utilization CPU, memory, disks, etc. .
• Built more than 500 servers from scratch and applied relevant patches on existing servers.
• Built 25 Red Hat Linux servers from scratch and provide 24 7 production support.

Environment: Red Hat Linux 5.x/6.x, Intel servers, Sun Enterprise servers, VERITAS Volume Manager, VERITAS Netback up 5.0, Perl Scripting, NIS, NFS, LDAP server, Apache Tomcat, EMC Storage SAN.

Confidential

Unix/Linux Administrator

Responsibilities:

• Assist with overall technology strategy and operational standards for the Unix domains. Manage problem tickets and service request queues, responding to monitoring alerts, execution of change controls, routine preventative maintenance, performance tuning and emergency troubleshooting incident support.
• Day to-day administration on Sun Solaris, RHEL 5/6 which includes Installation, upgrade loading patch management packages.
• Experience using Kickstart and modified Kickstart based on server profiles and hardware specifications.
• Day to day problem handling like related to File Systems, Disk, Memory, CPU, Network etc.
• User Administration, adding and removing user accounts, changing user attributes.
• Applied patches every quarter regularly to meet audit requirements using Red Hat Satellite server, YUM, RPM tools.
• Installed and Configured SAMBA Server in Linux for accessing the shared files from the windows environment.
• Configuring and Maintaining of Network File Systems NFS and Auto mount over the networks.
• Installing and updating Kernel, created and modified swap files and added swap space.
• NTP server and client configuration for synchronization of timing of all the server with the NTP server
• Experience in setting up Solaris Custom Jumpstart server .
• Worked with Telnet, FTP, TCP/IP, iLink, rlogin, used to inter-operate hosts.
• Performance and capacity management, configuring Network printers using CUPS.
• Implementing Quota on file systems and ACL's for the files directories .
• Installation, administration of VIO Server and VIO client LPAR's, Upgrading VIO Servers and AIX Servers, Upgrading AIX TL from AIX 5.3 TL8 to AIX 5.3 TL9 and from 5.4 to 6.1.
• Installing and configuring oracle 10g and coordinating with the oracle team in maintaining the database.
• Designed, installed and configured HACMP cluster environment, with cascading and mutual takeover,
• Administration of multiple AIX machines, AIX clusters, and SP nodes from any client platform through WebSM, implemented PLM Partition Load Manager on AIX 5.3.
• Good LVM skills, using LVM created VGs, LVs then crated file systems and disk mirroring.

Environment: RHEL 5.x/4.x,VERITAS NetBackup, Sun E250, E450, Sun E3000, SunFire v440/v480/v490, Solaris 8/9, VERITAS volume manager 3.5.