SUMMARY:

• Around 8 years of experience in Unix Administration, Engineering on Solaris, Red Hat Linux

TECHNICAL SKILLS:

Operating Systems: Solaris 9, 10, 11 & open Solaris, RHEL 4, 5, 6, 7, AIX 5.1/5.2/5.3, Windows XP/2000/2003

Hardware: Sun SPARC Enterprise Servers (M Series, T Series - M5K, M4K, M3K, T5440, T5240, T5220, T2000), Sun Fire Servers (V880, V490, V480, V245, V240), HP Proliant DL 300/500 series, IBM x3650, HP9000 series, IBM P Series, Blade Server HS20 and HS21, Sun Storage T3/T4 arrays (6120, 2540), Overland REO 8000, Quantum Scalar 50 LTO4, IBM ADIC Scalar 24 LTO3, 8mm SDLT Tape Libraries, Net App Filers C3300, C6000, Data ONTAP 7.2, HBA cards, Dell Power Edge, EMC CLARON (CX600, CX700), Cisco Catalyst 2950, 6500, UC 500 Gig network cards

Languages: Python, Java, UNIX Shell Scripts & PERL Script, C, C++, My SQL, and SQL

Networks: DNS, DNSSEC, BIND, DHCP, NFS, NIS, LDAP, NAS, and SAN

Databases: Oracle 10g & 11g, Sybase 12 & 15.

Protocols: TCP/IP, SFTP, SSH, SMTP, HTTP, RIP, IGRP, OSPF

Web & App. Servers: IBMIHS, Apache2, BEA Web Logic 8.1/9.2/10.x, Web Sphere 5.x/6.0.x/6.1.x/6.2,

Storage Technologies: EMC2, Veritas, Net Backup, Volume Manager

Virtualization Technologies: VM Ware

Automation Tools: ORSYP, Dollar Universe.

EXPERIENCE:

Confidential, Thousand Oaks, CA

Sr. Linux Administrator

Responsibilities:

• Built RHEL 5, 6, 7 servers on ESX 5.x VMware platform through kickstart
• Production support to over 3000+ mission critical servers running multi-terabyte DBs such as Oracle, RAC, Sybase and many more applications such as weblogic, apache, etc
• Performance fine tuning by configuring RAID, kernel parameters, network stack on RHEL and Solaris platforms including zones and LDOMs
• Scripting in Korn and Bash for job automation
• Yum patching of Linux servers using satellite server
• Server security hardening for PCI, SOX compliance using DSS standards - automated via scripting the patch compliance reporting
• Configure SAN storage using LVM, Veritas Volume Manager, ZFS
• Support and manage Citrix and F5 load balancers, which help keep site availability up.
• Configure end-to-end LTM and GTM VIPs and the related DNS configurations.
• In depth understanding of eBay home grown tools like CMS, Montage, Reparo etc.
• Real time Interface with internal services using existing tools/scripts to provision physical, virtual and cloud server and configure compute for production traffic.
• Assist customers by guiding and troubleshooting through PET & server issues and getting their instances up and running.
• Extend application services to Confidential standard data center policy to improve redundancy.
• Utilize Trace & Jira for change control
• Worked with SAN and NAS (on NFS v3,4) filesystems through storage team
• Responsible for helping consolidate and close out several data center locations without any impact to customer site.
• Follow established SOPs (Standard Operating Procedures) for various tasks.
• Patched servers, firmware updates, breaking and re-establishing root mirrors
• Worked with backup (TSM, Veritas Netbackup), monitoring (Tivloi, Nagios), network and storage teams to build out servers in a given project
• Involved in Virtualization project which included designing, implementing and troubleshooting more than 300 VMware ESX (3.5 update 4) servers, and Oracle Virtual Machines (OVMs).
• System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio, File system administration
• Added IBM HS12 and HS21 Blades into chassis and verified proper connectivity. Configured Advanced Management Module (AMM) for administrator access. Configured Cisco Ethernet Switch Modules for IBM Blade network connectivity.
• Configuring and Installing HP Blade C7000 Servers
• Build approved Linux projects using cloud forms in case of VMs or use Opsware to build physical servers. Post provision servers after initial build to make sure newly built servers have all monitoring and configuration management tools installed. Mount storage and get ACLs implemented. Hand over servers after build activities are complete.
• Collaborate with application teams after handing over new servers to help them install applications, assist them with getting right service accounts setup, tune kernel or customize OS according to app teams’ requirement. Build new LTM VIPs or GTM Wide IP, test Active/Active and Active/DR setup. Continue to assist until application Go-Live.
• Prep servers for Oracle RAC clusters and standalone databases. Configure shared FC, NFS and iSCSI Storage. Create ASM disks and make sure cluster verify tools pass all checks before handing over servers to DBA for CRS and DB install. Setup HugePages and assist DBA with RMAN Backup setup, ADG or Data Guard installation.
• Provided Operational Support to over 40000 servers hosted globally. Lead bridge calls in case of critical production issues. Recover OS and help bring applications back online quickly.
• Participated in planned maintenances activities such as patching and reboots.
• Troubleshoot Oracle RAC issues such has node evictions, node hangs or storage performance. Run OS watcher, review OS logs and tune OS to address performance issues while working with DB admins.
• Troubleshoot issues with VMs running on VMware ESXi 5.5 and 6.0. Review hypervisor logs using Vsphere web and thick client. Troubleshoot performance and storage issues. Build, migrate and clone machines.  
• Prepared root cause analysis and work with incident managers to prevent recurrence of critical issues.

Confidential, St. Louis, MO

UNIX/Linux Consultant

Responsibilities:

• Installed configured and built servers using Jumpstart and Flar Images (Servers included v240, V440, V880, T2000,T5240). Provided support to mission critical applications spread over 2800 servers.
• Installed and configured Solaris 9, 10 & 11
• Configured Zones and LDOMs and containers for Solaris 10 & 11.
• Designed, implemented & maintained multi node Veritas Cluster.
• Prepared server availability report for the management.
• Planned & Implemented Patch and Packages installations, quarterly patching of servers.
• Upgraded Solaris OS (Live upgrade from Solaris 9 to Solaris 10 & 11).
• Implemented Root Mirroring for systems using VxVm (Veritas Volume Manager) and Solstice Disk Suite.
• Upgraded Veritas Volume Manager from 3.x to 5.x
• Supported databases like Oracle & Web servers like Apache, Tomcat & other proprietary applications.
• Installed Configured and Managed NIS, NFS, DNS and Send Mail. Configured DHCP Red Hat Linux, server and SUSE.
• Production support for mission critical servers in PSoft, Oracle, Web environments and using Change Control Board (CCB) mechanism under ITIL umbrella.
• Performance troubleshooting on day to day basis
• Implementation of PCI security standards for SAS70 and internal IT audits across UNIX shop comprising of AIX (5.3, 6.1), Solaris (9, 10 and 11) and RHEL (4, 5).
• Used Clearcase to support Software Configuration Management.
• Automation of jobs using Perl and Shell scripting.
• Built a Linux kickstart server on x86 machines, deployment of HP Blade server running RHEL 5 using VMware.
• Built M3K, M4K and M5K Servers for replacing old Sun Fire V480 and V490 Servers. Configured XSCF controller for Console Access. Moved all the Applications such as Oracle, NetIQ, Tivoli Client, VERITAS Netbackup Client, etc to the New Server and configured them as Original.

Confidential, Austin, TX

Unix Systems Administrator

Responsibilities:

• Worked with a business unit to migrate the applications to Fujitsu PrimePower 650 servers using Solaris 8. Veritas VCS for oracle was used to support failover and multinic agent was used to add redundant IP support. Documented the setup and trained operation staff.
• Performed the administration of the Domain Name Server and configuration of the Database Files.
• Troubleshooting Backup and Restore problems and performed day-to-day trouble shooting for the end users on Solaris based applications.
• Performed OS upgrades and Patch loading as and when required.
• System hardening and Security, SAS-70 audit responses
• Backing up and restoring files using Veritas NetBackup
• Responsible for Installation of various software components on several servers.
• Administering NFS Mounts.
• Evaluated SLES 9 running on Dell 6650, HP ProLiant 585 and Fujitsu BX600 Blade servers.
• Designed a standard environment for SLES 9. The work included customization and testing of infrastructure setup such as powerpath, NIC bonding, CA monitoring and autosys.
• Designed and implemented a new SAP environment for an external client. The final configuration consisted of 8 LPARs using HACMP for failover and NIM for server installation. The project was completed on time within a tight schedule.
• Part of the server consolidation team that designed a process to consolidate and virtualize servers.
• Migrated and customized the jumpstart server to a new environment.

Confidential, Minneapolis MN

Linux Systems Administrator

Responsibilities:

• Installed, upgraded and configured SUN Solaris 8, 9 and 10 on Sun Servers using jump start and Linux Operating System.
• Plan and implement assigned projects, change management, on-call support, and hotline bridge participation.
• Installation, configuration and maintenance DNS servers, Mail servers, FTP servers, NFS, NIS, NIS+ and Samba Web servers on Sun Solaris, and Linux platforms.
• Involved in setting up accounting systems and performing ongoing system with the administrative tasks. Extensive user and group management through admin tool.
• Troubleshooting and analysis of hardware and software failures for various Solaris servers (core dump and log file analysis).
• Configured distributed file systems and administering NFS server and NFS clients and editing auto-mounting mapping as per system / user requirements.
• Installation and monitoring of Sun Volume Manager, Sun Cluster Server in SAN Environment.
• Provided 24 x 7 supports to various application level server level & network level Monitoring and troubleshooting of any datacenter outages.
• Provided Support to networking services and protocols such as TCP/IP, NIS, DNS, NFS, LDAP, FTP, SSH, SMTP, SNMP, SSL, and HTTP.
• Involved in development, user acceptance, performance testing, production & disaster recovery servers
• Supported databases like Oracle & Web servers like Apache and Tomcat.
• Worked on ClearCase for storage and maintenance of files and associated meta data

Confidential

Unix Admin

Responsibilities:

• Provided Server hardware and Application support
• Supported around 50 Linux and Solaris servers running Solaris 8/9/10/11 and Redhat Linux ES 4/5/6.
• Worked on shell scripting to automate the tasks
• Worked with software engineers, Oracle DBA's and customer service personnel to resolve issues and keep our environments operating smoothly.
• Maintained and Supervised Datacenter and Disaster recovery centers.
• Linux deployment, administration, performance tuning, monitoring and application management.
• Provide 24x7 production environment monitoring and support and performed vendor co-ordination.
• Managed Users on Unix/Linux and Windows systems.
• Administer System logs, Security logs.
• Update software packages and apply security patches.
• Performed hardware maintenance, upgrades and troubleshooting on workstations and servers.
• Helped troubleshoot engineers with Non-linear FEA startup files and database files.
• Write documentation for internal use about System changes, Systems Administration etc.

Confidential

Trainee Unix Admin

Responsibilities:

• Provided Server hardware and Application support
• Supported around 50 Linux and Solaris servers running Solaris 8/9/10/11 and Redhat Linux ES 4/5/6.
• Worked on shell scripting to automate the tasks
• Worked with software engineers, Oracle DBA's and customer service personnel to resolve issues and keep our environments operating smoothly.
• Maintained and Supervised Datacenter and Disaster recovery centers.
• Linux deployment, administration, performance tuning, monitoring and application management.
• Provide 24x7 production environment monitoring and support and performed vendor co-ordination.
• Managed Users on Unix/Linux and Windows systems.
• Administer System logs, Security logs.
• Update software packages and apply security patches.
• Performed hardware maintenance, upgrades and troubleshooting on workstations and servers.
• Helped troubleshoot engineers with Non-linear FEA startup files and database files.
• Write documentation for internal use about System changes, Systems Administration etc.