SUMMARY

• 7 years of Strong Experience in LINUX/UNIX Administration, Shell Scripting with expertise in Red Hat Enterprise Linux 4, 5 and 6, Solaris 9 and10 and Windows 2003 and familiar with IBM AIX 6.
• Expertise in Installation, Configuration, Integration, Tuning, Backup, Crash recovery, Upgrades, Patching, Monitoring System Performance, System and Network Security and Troubleshooting of Linux/Unix Servers.
• Configured and used Kickstart, Jumpstart and NIM to install OS.
• Worked on KVM of Red Hat Enterprise Linux 4,5 and 6 and Solaris 10 Container Technology.
• Configured and maintained VMware.
• Used Red Hat Network (RHN) Classic and Red Hat Network Satellite for operating system upgrade or maintenance.
• Solaris Live Update Technology associated with an operating system upgrade or maintenance.
• Experienced with the installation, configuration and volume/File system management using Veritas Volume Manager (VxVM), Logical Volume Manager (LVM).
• Backup management and recovery policies using VERITAS Net - Backup.
• Experience in creating physical volume, logical volume, volume groups using LVM’s in Red Hat Enterprise Linux, GFS (global file system) and ZFS in Solaris.
• Proficient in Networking and configuring TCP/IP, DNS, NFS, NIS, NIS+, SAMBA, LDAP, SSH, SSL, SFTP, SMTP, SNMP.
• Experience in VMware. Installed and monitored Virtual environments with ESX 4.x servers and vSphere.
• Good knowledge on various cloud computing products such as Amazon (EC2), OpenStack.
• Experienced in working with Storage Area Network (SAN), EMC CLARiiON CX, EMC Symmetrix DMX, EMC MirrorView, Hitachi data storage.
• Experience in installation, configuration and administration of WebLogic and Web sphere Servers.
• Proficient in Installation, Configuration, Support & Maintenance of various Red Hat 6 and Sun SPARC Enterprise hardware Servers located at Remote Locations.
• Deployment of Application Software (E-Com/J2EE, B2B, B2C, Oracle SQL Server, ERP (SAP, Oracle Apps, People soft).
• Experience with Cisco UCS and FlexPod environments.
• Experience in providing day-to-day user administration like adding and deleting users and managing users queries.
• Strong in troubleshooting, monitoring, training and 24/7 production support in mission critical environments Worked with systems support team to define, architect and maintain highly available production systems.

TECHNICAL SKILLS

Hardware: Red-Hat Linux Enterprise servers (HP ProLiant DL 585, BL 465/485, ML Series), SAN(NetApp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Dell Power edge 1300/1500 server, IBM xseries, Blade server

Operating Systems: Red Hat Linux (RHEL) 4/5/6, IBM AIX 5.3, Windows NT /2003/vista, Ubuntu 14. o4,16.04lts Fedora 16/17/18, SUSE 10.x

Naming Services: DNS, NIS, and NIS+

Script Languages: Shell scripts, PERL

Web Technologies: Apache 2.x/3.x, IPLANET 4.x/5.x, WEBLOGIC 8, WebSphere 4.0/5.0

Storage: SAN, EMC Symmetrix / Clarion, iSCSI, SNAP, NAS, DAS

Third-party Software: LVM, LDAP

Cluster: Red Hat Cluster, Veritas Cluster Server (VCS), AIX HACMP

RDBMS: Oracle, MS SQL Server

Protocols: NetBIOS, NetBEUI, SMTP, SNMP, ICMP, TCP/IP, FTP, TELNET, SSH, UDP & RIP, DNS, WINS, DHCP.

Antivirus: Symantec Antivirus Corporate Edition, Trend Micro Messaging Suite for Exchange, MacAfee Virus Scan Engine 7.1 / 8i, AVG (Grisoft)

PROFESSIONAL EXPERIENCE

Confidential

Linux/UNIX System Admin

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 6/7 and Solaris 10 systems.
• Performed automated installations of Operating System using kick-start for Red Hat Enterprise Linux 5/6.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• As a Red Hat administrator, primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
• Installation, configuration of Oracle RAC for multiple computers to use single database.
• Extensive use of Veritas Volume Manager, Cluster server for Disk management, file system management on Unix/Linux environments.
• Worked on Puppet, creating puppet profiles, manifests, modules and implementing them across the servers.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Installed and maintained OpenStack (Havana) on KVM for cloud based applications.
• Extensive use of Bash shell for scripting for performance monitoring, back-up jobs.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VCS in heterogeneous SAN environment.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.

Environment: Red Hat Linux Enterprise servers (HP ProLiant DL 585, BL 465/485, ML Series), SAN(NetApp), Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, VMware Virtual Client 3.5, VMware Infrastructure 3.5.

Confidential, FL

System admin

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 5/6.
• Performed automated installations of Operating System using kick-start for Red Hat Enterprise Linux 5/6.
• Remote monitoring and management of server hardware.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Installation and configuration of Veritas Storage Foundation Suite: Veritas Volume Manager, Veritas File System, Veritas Cluster Server.
• Used Puppet tool for managing system configurations.
• Hands on experience on various cloud computing products such as Amazon Web Services EC2 and VPC.
• Built virtualized Linux servers on ESXi, vSphere and Blade servers to host multiple application on same chassis across different server hosts.
• Set up Red Hat Linux servers for iSCSI LUN boot instead of using local hard disks.
• Set up Sun servers for SAN-through-FCP boot as against booting from internal hard disks.
• Configured Sun servers M4000 and M5000 for operational readiness upon OS installation.
• Set up Linux servers for LAMP implementations and readiness.
• Created File systems from local storage as well as NFS partitions for application portability.
• Created Ext4 file system in Red Hat Enterprise Linux and Zeta byte file system (ZFS) in Solaris 10.
• Created zpools. Exported ZFS from local zones to local zones.
• Installing, administering Red Hat using Xen, KVM based hypervisors. RPM and YUM package installations, patch and other server management.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked and performed data-centre operations including rack mounting, cabling.
• Installed, configured, and maintained WebLogic 10.x and Oracle 10g on Solaris and Red Hat Linux.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• Designing Firewall rules for new servers to enable communication with application, Oracle10g servers.
• Coordinated with the Storage, Network and Hardware teams on server provisions (HP ProLiant DL385/585 G5, G6 servers, and HP BL 465C G5 blade canters).
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Adding servers to the domain and monitoring them using spectrum, site scope, cacti.

Confidential, MO

LINUX System Administrator

Responsibilities:

• Installation and administration of RHEL 4.0/5.0 and SUSE 10.x.
• Configured kickstart server and updating/applying patches to the servers using Red Hat Satellite server.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Installing, administering Red Hat using Xen, KVM based hypervisors.
• Installation, configuration of Oracle RAC for multiple computers to use single database.
• Supported Oracle 10g RAC.
• Hands on experience on cloud computing product Amazon Web Services EC2.
• Used Jenkins for continuous integration and automation.
• Used Puppet tool for managing system configurations.
• Built virtualized Linux servers using vCenter, vSphere suite on ESXi 4.0.
• Automation of jobs through crontab and AutoSys.
• Installation of packages, patch management, volume management on SuSe servers using YaST.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine-tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding servers to domain and managing the groups and user in Active Directory, installing and configuring send mail.
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
• Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
• Worked with project manager and auditing teams to implement PCI compliance.
• Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
• Integrating WebLogic 10.x and Apache 2.x and deploying EAR, WAR files in WebLogic Application servers.
• Management and monitoring of various services using Service Management Facility and Service Administration.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Working on Volume management, Disk Management, software RAID solutions using Logical Volume Manager and VERITAS Volume manager.
• Fine tuning of Servers and configuring networks for optimum performance.
• Organized various meetings with teams as mentioned above for tracking their requirements as inputs to get this done and designed the plan/steps involved and took user approvals.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Installation, maintenance and administration of Oracle and Db2 Server on Sun Servers.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN Environment.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Created new groups and tested first in development, QA Boxes and then implemented the same in production Boxes.

Environment: Red Hat Linux Enterprise Linux 4/5 4, Solaris 9,10, Sun E10k, E25K, E4500, Sun Fire V440/880, DMX 3 & DMX4, SiteMinder, Sonic MO 7.0, VxFS 4.1, VxVM 4.1.

Confidential

Jr System administrator

Responsibilities:

• Installed RHEL 3.0/4.0 using kickstart and custom building the servers.
• Installed/configured EMC Storage with 0, 1& 5 RAID configurations.
• Installed and maintained Security issues.
• Installed Veritas Volume Manager, VCS Cluster Server for fail-over and for mirroring and raid level configurations on EMC storage frames.
• Performed all System Administration tasks like cron jobs, installing packages, and patches.
• Configured Mail relaying, virtual host, POP3 and IMAP4 services and enforced security policies.
• Diagnosing hardware/software problems and provide solutions.
• Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clients and Auto Fs File systems.
• Troubleshooting system, network and user issues.
• Performing tape backups, archiving and checking data integrity through Shell Scripts and job automation.
• Supported back office systems environments.
• Testing and upgrading production, development and test Linux and Solaris servers.
• Creation & Maintenance of user accounts & passwords & profiles, home directories, initialization of files, groups’ creation and management, setting file permissions, customizing shell environment setup for users.
• Additional responsibilities include schedule and administration of server backups, setup and administration of network and ms mail accounts.
• Troubleshooting various problems related to VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices on various Production Boxes.
• Maintaining production critical servers running Linux supporting Oracle database and Web services. Providing 24x7 supports.
• Worked efficiently using Veritas NetBackup on development and production servers for backups and restores.
• Created LVMs on Linux servers.
• Writing Shell Scripts for managing day-to-day transactions & for automation of routine tasks.

Environment: HP ProLiant servers, SUN Servers (6500, 4500, 420, Ultra 2 Servers), Veritas NetBackup, Veritas Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming.