SUMMARY:

• 7+ years of extensive Linux/Unix Systems Administration experience in installation, configuration, administration, troubleshooting, tuning, security, backup/ recovery and upgrading Linux (Red Hat & SuSE), IBM AIX and Sun Solaris in large environments.
• Experience with tools such as BlaDELOGIC (Configuration Management on multiple servers).
• Configured and used Jumpstart, Kickstart, Ignite and NIM to install OS on various QA, PROD environments.
• Worked on Solaris 10 Container Technology. Created and maintained local zones involving forward lookup and reverse lookup rules.
• Expertise hands in VERITAS, Cluster Server, and HP Service Guard in supporting high availability mission critical servers.
• Experienced with the installation, configuration and volume/File system management using Veritas Volume Manager, Logical Volume Manager (LVM) and Solstice Disk Suite (Solaris Volume Manager).
• Experience with Backup management and recovery policies using VERITAS Net - Backup.
• Extensive experience in creating physical volume, logical volume, volume groups using LVM’s in Linux and HP-UX (ITANIUM and PA-RISC).
• Excellent working knowledge in configuring and Administering NIS, NFS, DNS, DHCP, LDAP, Samba in heterogeneous environment.
• Excellent in Configuring and Administering NFS, SMTP, DHCP, samba in heterogeneous environment.
• Experience in VMware Installed and monitored Virtual environments with ESX 3.x servers and Virtual Center 2.X
• Expert in Installation, configuration of Patches and Packages using rpm and yum.
• Proficient in Installation, Configuration, Support & Maintenance of various Sun Sparc Enterprise E5K, 10K, 15K, 20K, 25K and RedHat5.x Linux Servers located at Remote Locations. Deployment of Application Software ( E-Com/J2EE, B2B, B2C, Oracle, ERP, SAP)
• Experience in providing day-to-day user administration like adding and deleting users and managing users queries.
• Excellent in System performance tuning Configuration
• Sound understanding of IT Infrastructure Administration with project management skills.
• Providing 24/7 technical support to Production environments on 365 days-rotation period.
• Experience in configuration and testing Disaster Recovery Site.
• Expertise hands on experience in shell script automation and PERL Programming.
• Technical professional with management skills, excellent business understanding and strong communication skills.
• Implemented and worked on various Project management tools like Rally Agile Scrum methodology tool, Service now tools that provides access to users on particular domain.

TECHNICAL SKILLS:

Hardware: SUN Enterprise- E 5000/5500/6500 , SUNFIRE 3800/4800/6800 , E10K/15K Series Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers, SAN(EMC, Hitachi), NAS (Netapp)

OS: Solaris 10/9/8, HP-UX (11.00, 11.11, 11.23, 11.31), IBM AIX (5.1, 5.3), Red Hat Linux (RHEL 3/4/5), Windows NT /2003/vista

Naming Services: DNS, NIS, and NIS+

Backup Management: Veritas Netbackup 4.x/5.x/6.x, Ufsdump, ufsrestore, tar, dd, cpio

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

ThirdParty Software: VERITAS Volume Manager, LVM, LDAP, SSH

Cluster: Veritas Cluster Server (VCS), Sun Cluster, HP Service Guard, AIX HACMP

RDBMS: Oracle, MS SQL Server

Protocols: NetBIOS, NetBUI, SMTP, SNMP, ICMP, TCP/IP, FTP, TELNET, 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)

Remote Access Tools: Terminal Services, Net Meeting, Web - Ex, PC Anywhere & VNC for Windows Servers.

PROFESSIONAL EXPERIENCE:

Confidential, Charlotte, NC

Sr. Unix /Linux Systems Administrator

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of RHEL 6.x on existing servers.
• Performed automated installations of Operating System using Jumpstart for Solaris and kickstart for Linux.
• Responsible for 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.
• Configuring and managing the SSH, SSL, NFS, FTP, SAMBA, SMTP and DHCP Servers on Linux.
• 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.
• Worked on the configuration and troubleshooting of printers using CUPS(Common Unix Printing System) and HP Spooler.
• Performed all the Storage Operations like adding Devices, BCVs mounting BCVs on DR host.
• Worked on trouble shooting various multipath, powerpath issues.
• Resolved several EMC storage related issues like director failure, VHBA addition on Host side.
• Performed NIC Tuning by increasing its TCP, Receiving and sending memory .
• Installation and configuration of Veritas Volume Manager, LVM, Veritas File System and Veritas Cluster Server.
• Installed Operating System on Solaris and Linux servers and blades over the network.
• Performed all the SAN related work using EMC symmetrix, SRDF and BCVs.
• Built servers according to standards specified as per individual applications
• Built virtualized Linux servers on ESX and blade servers to host multiple applications on same chassis across different server hosts
• Set up 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
• Set up Linux servers for LAMP implementations and readiness increasing scope for linux security.
• Created Filesystems from local storage as well as NFS partitions for application portability
• Applied patches and packages on Linux servers using rpm RedHat Package Manager and yum tools
• Ensured automatic startup of different services by using chkconfig
• Configured Opsware on the servers for event tracking
• Implemented virtual, integrated, management and proxy IPs on the machines to serve different purposes
• Used DHCP static IP methods for assigning IP addresses to list of group users.
• Installed and configured Apache, MySQL and PHP products on the Linux servers.
• Installation and configuration of Redhat and Veritas Volume Manager, File System.
• Administered and supported the SAP Production, Quality and development systems in a 24x7 in an environment consisting of Oracle 9i, Sun Solaris 9 and EMC Symmetrix SAN Storage.
• Providing day-to-day user administration like adding/deleting users and managing users queries. Shell programming for routine administration tasks. Analyzing & monitoring system performance through various system tools such as netstat, iostat
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.
• Creation and scheduling of Cron Jobs such as for Backup, System Monitoring and removal of unnecessary files
• Performed automated installations of Operating System using Jumpstart for Solaris and kickstart for Linux.
• Develop, Maintain, update various script for services(start, stop, restart, recycle, cron jobs) Unix based Korn shell, Bash.
• Updated & Running the various source code for migration & updating follow-up the release management.
• User, Group, Package administration, various repetitive activities across Linux Environment.
• Configured NIS Master and Slave servers and NIS clients.
• Engaging and working with different vendors to determine problem resolution and root cause of hardware problems

Environment: RHEL 5.x,6.x, Windows NT, Ultra Enterprise 2/1 Servers,SAN, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC M4K,M5K,M8k servers, SPARCstation 10, Sun Sparc Ultra 1,5,10, ZFS, QFS and Veritas File System 3.0, clustered nodes

Confidential, Providence, RI

Sr. Linux Systems Administrator

Responsibilities:

• Worked as a Linux/Solaris Administrator for New Projects and Supervising the Linux/UNIX Support team.
• Maintaining the server farm of around 500 + Solaris, HP-UX, AIX and Linux servers and resolving the trouble tickets.
• Creating and maintaining the Standbuild OS for Redhat and CentOS Linux involving package management using rpm package manager, yum.
• Configuring NFS, NIS, NIS+, DNS, LDAP and disk space management on SUN servers.
• Installing & configuring Solaris 8, 9, 10 using Jumpstart, HP ITANIUM and PA RISC boxes using IGNITE
• Worked on Data Center Migration Project. Migrated Linux/Unix Servers from one data center to other data center with minimal downtime.
• Extensive working experience in process scheduling, disk and file system I/O, kernel internals, TCP/IP networking.
• Implemented SUDO, SSH and other security tools and implemented SOX (Sarbanes Oxley) security compliance.
• Involved in installation, configuration and administration of Apache Webserver, BEA WebLogic and IBM Websphere and Samba Server in Unix, Linux and Windows environment.
• Extensive use of volume management tool using Veritas Volume Manager to create disk groups, volumes with RAID architecture and layered volumes.
• Installation, Configuration and Administration of High Availability, SUN cluster and Veritas Cluster Servers for failover and redundancy purpose.
• Worked on Solaris 10 container technology, created local and global zones, modified local zone parameters, created file systems on local and global zones.
• Created Zettabyte file system (ZFS) in Solaris 10. Created zpools. Exported ZFS from local zones to local zones.
• Experience in Red Hat Cluster Suite and Global Filesystem, Red Hat Network Satellite Server.
• Checking the status and property information of hardware components during regular maintenance using hp online diagnostic utilities(SFM(system fault management),STM (support tool manager).
• Managed resources for zones using Solaris 10 container technology.
• Created/used LDOM in Solaris 10 and installed multiple OS.
• Creating metadevices, soft partitions, mirroring the devices and metasets.
• Space allocation to the metadevices, detaching and clearing the devices if not in use.
• Proficient in troubleshooting allocation, dellocation storage issues related to NAS/SAN.
• Performed automated installations of Operating System using Jumpstart for Solaris and kickstart for Linux.
• Experience in Load Balance workload evenly across two or more servers, network links, CPUs, hard drives, or other resources, in order to get optimal resource utilization, maximize throughput, minimize response time, and avoid overload.
• Configured new service group and resources for new application in Veritas Cluster Servers.
• Worked on server consolidation and migration from one data center to another data centers.
• Extensively worked in data and database migration from older machine to latest configurations.
• Installation, setup, configuration, security administration and maintenance for flavors of servers.
• Troubleshooting various problems, logging call with vendors.
• Monitor performance and resource utilization of key systems and provide ongoing trend analysis for forecasting future resource requirements
• Preparation of performance acceptance criteria drafts for newer applications.
• Implemented Security Hardening per company policy using Solaris 10 features.
• Worked on TRACE Action Request system for ticketing and tracking asset records.
• Worked on Nagios continuously monitoring the status of hardware components and automatically
• Involved in disaster recovery testing every quarter.
• Supported 24/7 high availability production servers which involving co-ordinating with offshore team.
• Participation in change control activities, Involved in Memory sizing of different applications.
• Complete periodic checks of production and development systems, CPU utilization, memory profiles, disk utilization, network connectivity, system log files, etc.
• Verify successful completion of daily incremental and database backups, following developed procedures

Environment: RHEL 5.x, Windows NT, SUN Netra Servers, Sun Enterprise 4500/4540/6500/450/420 R/250 server,SAN, Sunfire 6800/4800/480 , E10k/25K. HP Itanium, HP PA -RISC boxes Rp8200, IBM pSeries 670,p5 595, xSeries. Oracle clustered nodes.

Confidential, Dallas, TX

Sr. Linux Systems Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Solaris, AIX, HP-UX, Linux (Redhat and SuSE) operating system.
• Worked as Unix system Administrator for Amex dedicated support, a server consolidation project. Amex is in process of migrating 700 servers and 400 applications from the old infrastructure to the latest new infrastructure as per business needs. We work on measurement base capacity planning and sizing.
• Installation, Configuration & Trouble Shooting of VXVM under sun Solaris 8, 9, HP-UX
• Experience with Volume creation resizing and troubleshoot to the client’s development/production environment using veritas volume Manager.
• Installation of patches and other software packages
• Configuration of NIS, NIS+,DNS,NFS, Sendmail, Samba, Apache for multiple environments
• Monitoring System performance and do kernel tuning to enhance the system Performance.
• Setup and maintained DNS Primary, Secondary, Cache-only servers, DHCP servers and DNS clients.
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.
• Managed physical and Logical volumes, Volume Groups etc. in Linux.
• Extensive working experience in process scheduling, disk and file system I/O, kernel internals, TCP/IP networking.
• Application & Production Support(Bridge Call 24/7) on weekly rotation basis.
• Installations of Peripherals - Fax/ Modem, Printers, Scanners, Tape and Zip Drives, Multimedia and PCMCIA cards. Installation and support of all Application Software in Windows environment.
• Desktop support provided to end users installation of windows 98/2000.
• Ensure that all computers are in perfect operating condition at all times.
• Establish security and control measures on the use of computers.
• Follow up change management procedure & implement the documentation standard as per requirement.
• Actively involved in technical discussions to provide/design solutions for various application teams

Environment: Solaris 8,9,10, RHEL 3,4, AIX 5.2, HP-UX 11.x and Windows NT, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10, Sun Sparc Ultra 1,5,10,Veritas File System 3.0, ORACLE

Confidential, Reston, VA

Sr. Linux Systems Administrator

Responsibilities:

• Administered and supported Linux (RHEL 4.0) and AIX (UNIX) servers for non-production, test and dev environments.
• Installed and setup System Integration SIT and User Acceptance Test UAT and Development Environments.
• Applications supported on the above servers are Apache/Tomcat.
• Used Puppet to perform configuration systems of Web Applications.
• Security and backup packages administered Best1/Patrol, Tripwire and IBM TSM client.
• Configured SAMBA between the Linux and windows servers to provide directory sharing capability among Linux and Windows servers.
• Performed system migration and application backup and restore for Financial Package Application Servers.
• Setup open SSL involving private key so to process through https.
• Setup and managed DNS and DHCP Servers to distribute wide range of IP address.
• Configured CentOS for Apps team performing UAT and SIT environments.
• Deployment to all PROD & Non-PROD server’s Testing of Customization monitoring alerts (like Log file, file age, file system) in CERT environment

Environment: RHEL 5.x,Samba, Apache web Servers, Varnish Cache, Provisioning Profiles, PEM files, mysql.

Confidential, Washington, DC

Systems Support Engineer

Responsibilities:

• Managed server on VMware and provided test environments on virtual machines.
• Provided IT support to internal WaMu staff members.
• Provided application support to large users groups.
• Installed hardware, installed RHEL 3.0 OS and configured required network on 25-Node HPC cluster.
• Managed HPC cluster, performed hardware, BIOS and application upgrade.
• Configured and managed Apache web server.
• Managed software and hardware RAID systems.
• Configured and maintained FTP, DNS, NFS and DHCP servers.
• Managed user accounts and authentication process by NIS service.
• Managed System Firewall utilizing IP Chains, IP Tables. Implemented SSH SSL.
• Managed user disk usage by setting up quotas.
• Administered system logs and security logs.
• Updated software packages and applied security patches.
• Performed hardware maintenance, upgrades and troubleshooting on workstations and servers.
• Communicated with hardware and software vendors and equipment dealers and maintained good relations.
• Wrote documentation for internal use about system changes, systems administration, etc.

Environment: RHEL 3.x, Windows NT, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10, Sun Sparc Ultra 1,5,10,Veritas File System, Oracle.