SUMMARY:

• Senior Linux Systems Administrator with over 7 years IT experience on systems administration and infrastructure design in the Solaris and Linux environment.
• Maintains focus on achieving stability in a production environment while formulating and implementing solutions to meet a diversity of needs. Superior record of delivering mission critical projects on time and data - center/application migration.
• Hands on Installation, Configuration, Upgrades, Administration, Remote Monitoring of Solutions and Administration of Linux Cluster Servers along with creation, configuring file systems and file system attributes, such as permissions, encryption, access control lists and network file systems.
• Excellent expertise in installation and patching of systems, file system creation, deletion, migrations, basic troubleshooting, basic security holding Identity and access management.
• Migration of SUSE and Red Hat Linux Server environments from Older to Newer.
• Experienced in ITIL Processes - Incident management, Problem Management and Change management and other service management functions.
• Extensive Experience in Migrating VMWare VM’s to OpenStack Infrastructure.
• Exp erience d in deploying and managing a complex web application environment like JBoss, WebSphere and WebLogic.
• Strong Knowledge in OpenStack Environment, actively used component such as NOVA, Horizon, cinder, Controller and Compute nodes.
• Strong knowledge and worked on fixing easy user and system problems like password resets, user creations, extension of file systems, changing file permissions, groups ownership change, modification of user account, granting root access simple package installations .
• Hands on experience in configuring kickstart installation of Redhat Linux Enterprise servers.
• Experience in leading and managing teams. Possess good communication skills and interpersonal skills. Self-motivated, quick learner and a supportive team player.

TECHNICAL SKILLS:

Operating Systems: OEL 5.x,6.x ; RHEL 5.x, 6.x 7x ; Solaris 10, 11; CentOS 5;6,7 Fedora

Hardware: HP BL460c G6,G7 andG8, Solaris T5220, SPARC-T5, Sun SPARC Enterprise Servers (M Series, Confidential 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, Sun StorEdge T3/T4 arrays (6120, 2540), Overland REO 8000, Quantum Scalar 50 LTO4, IBM ADIC Scalar 24 LTO3, 8mm SDLT Tape Libraries, NetApp, Dell Power Edge, EMC CLARiiON (CX600, CX700), VMAX.

Languages: UNIX Shell Scripts and PERL Script.

Networks: DNS, DNSSEC, BIND, DHCP, NFS, NIS, LDAP, F5 Load Balance, NAS, and SAN.

Databases: Oracle 10g and 11g, Sybase 12 and 15. MongoDB 2.6 to 3.2.

Protocols: TCP/IP, SFTP, SSH, SMTP, HTTP(s), (S)FTP, DNS, DHCP.

Web and App. Servers: IBMIHS, Apache2, Tomcat, BEA WebLogic 8.1/9.2/10.x, Web Sphere 5.x/6.0.x/6.1.x/6.2, JBoss 5.x/6.0.x/7.x.

PROFESSIONAL EXPERIENCE:

Confidential, Phoenix, AZ

Linux Systems Administrator

Responsibilities:

• Production support for Enterprise infrastructure environment of 8000 Linux servers (Oracle Enterprise Linux, RHEL and Solaris), including physical and virtual platforms.
• Performed OS security patching on 3000 servers (OEL) and updated to latest kernels which eradicated vulnerabilities in Q1 and used puppet as a tool for patching automation in Q2.
• Creating and troubleshooting Veritas filesystems and upgraded Veritas to latest version.
• Memory addition add on VM’s using hot add capability and created VM disks for storage add on VM’s. VMware tools upgrade on all VM’s.
• Managing and troubleshooting user access issues using VAS tool.
• Troubleshooting hardware errors by upgrading firmware and replacing failed parts, Worked closely with Datacenter team for monthly amber light analysis on physical servers and troubleshooting the errors displayed in ILO’s.
• Worked on installation of TeraData, Symantec PGP and Splunk.
• Worked with Weblogic and Wesphere teams for applications installs by installing all required rpm’s specific to these applications.
• Worked with Oracle, Veritas and HP for root cause analysis on failures.
• Monitoring and assigning service requests in Remedy, PIER and Service now to Linux resources for prompt resolution. Creating daily reports of ticket status.
• Worked with backup team to restore files from backups as requested.
• Worked closely with Change Management to get approvals for changes on servers with production traffic with Urgent, Emergency and Normal CR’s.

Environment: Red Hat Linux Enterprise servers (Dell PowerEdge R720, R730), SAN (EMC), WebLogic, WebSphere, Shell programming, Oracle, Veritas Cluster, Veritas Volume Manager, Veritas File System VMware Infrastructure 5, TeraData, Symantec PGP, Splunk.

Confidential, Dallas, TX

Linux Systems Administrator

Responsibilities:

• Responsible for all aspects of building, configuring, migrating, production support in ITIL compliant environment containing mostly Solaris and RHEL OS on standalone and physical servers with over 6000 physical servers.
• Intially POC for DC migration project, soon overtook lots of support and build responsibilities.
• Built RHEL 4-7 servers using kickstart on VMWare, and standalone HP Blade /Dell PE server environment.
• Installed configured and built servers using Jumpstart and Flar Images (Servers included v240, V440, V880, T2000, M5000).
• Provided support to mission critical applications. Configured Zones and LDOMs and containers for Solaris 10.
• Live upgrade from Solaris 8 to 10. Designed, implemented and maintained multi node Veritas Cluster.
• Built and supported Oracle RAC implementation on RHEL VMs.
• Supported and troubleshooted HA environment in Vertias Clusters, Sun Clusters.
• Prepared server availability report for the management for Tier compliance, capacity management.
• Planned and Implemented Patch and Packages installations, quarterly patching of servers.
• Implemented Root Mirroring for systems using VxVm (Veritas Volume Manager), SVM, LVM, ZFS amongst others.
• Upgraded Veritas Volume Manager from 3.x to 5.x.
• Supported databases like Oracle and Web servers like Apache, Tomcat and other proprietary applications.
• Installed Configured and Managed NIS, NFS, DNS and Send Mail. Configured DHCP Red Hat Linux server used for kickstart.
• Production support for mission critical servers in PSoft, Oracle, Web environments. Performance troubleshooting on day to day basis.
• Implementation of PCI security standards for SAS70 and internal IT audits across UNIX shop comprisins of AIX (5.3, 6.1), Solaris (8, 9, and 10) and RHEL (4, 5).
• 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.

Environment: V490, V880, T2000, T5240, T5220, T3-2, M5000, M9000,Teradata, Exadata, Solstice Disk Suite, Veritas Cluster, Veritas Volume Manager, Veritas File System, Redhat Linux 5.x, Shell scripting, Oracle, WebLogic, Tomcat.

Confidential, Denver, CO

Linux System Administrator

Responsibilities:

• Worked in a production support team on Redhat 4.x, 5.x and 6.x, 7.x SUSE Linux 10.x, hardware platforms and in VMware vSphere client 5.x virtual environment.
• Installing, configuring and maintaining RHEL 5.x, 6.x physical and virtual server.
• Maintenance of DELL (2650, 2850, 2950, 380 Gen 8) servers and HP Proliant servers with Blade Hardware like C7000 and software troubleshooting.
• Worked on Grub, PXE boot, Kick start, Packages, Yum, RPMs, LVM, Boot from SAN, file system configuration.
• Responsible for troubleshooting and maintenance of VERITAS cluster under Solaris 8,9,10.
• Configuring LVM as extending Logical Volume and Physical Volume Size.
• Building RHEL 5.x, 6.x and SUSE Linux 10 as a 4 node cluster from scratch using HPSA tool.
• Installing CAD cluster Oracle 11g and Web logic applications 11.x, 12.x on RHEL 5.x and 6.x.
• Creating and configuring user accounts and DNS entries.
• Installation and configuration of HA environment using Linux cluster and VERITAS Cluster.
• Configuration and administration of LVM and VERITAS Logical Volume Manager.
• Writing shell scripts to accomplish day to day system administration task.
• Troubleshooting Hardware and Operating system related issue.
• Setting ulimit parameters and handling the job schedulers via cron
• Experience in writing technical documentation for regulatory and compliance procedures, policies and various other activities that involved.
• Worked on ILO/ALO/XSCF setup and configuration.
• Requesting, scanning partitioning and mounting the SAN and NAS storages disks during the server build.
• Perform physical to virtual (P2V), Virtual to Virtual (V2V) migration of servers to support the Data center migration project.
• Manage VMware Infrastructure on Production Test/Development environments..
• Involved in configuring network bonding and troubleshooting networking issues.

Environment: Linux, Solaris 8/9, E250, E10K, E4500, SunfireV880/440, Sun Storage (SAN), Solaris Volume Manager, Web Logic.

Confidential, Irving, TX

Solaris /Linux System Administraton

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.

Environment: : Prime Power, Solaris, Veritas, Oracle, SAS-7-, Netback up, NFS, SLES 9, HP Proliant, Fujitsu BX600, HACMP, NIM.

Confidential, Minneapolis, MN

System Administraton

Responsibilities:

• Worked Installing, tuning, troubleshooting and patching of Red Hat Enterprise Linux servers.
• Installation and configuration of WebLogic and WebSphere application server.
• Installation, configuration, and maintenance of web servers, application servers, and database servers on Linux Servers.
• Scheduled various regular, periodic, future and queue tasks by using crontab.
• Transferring files from one system to other using FTP and SFTP.
• Monitoring server performance and troubleshooting server related problems to SNMP.
• Processes administration and management like monitoring, start/stop/kill various processes/sub processes.
• Monitor system performance parameters using iostat, vmstat, and fine-tuning.
• Systems administration, maintenance, and monitoring various day-to-day operations.
• Wrote simple bash scripts to ping the servers and add users to the boxes.
• Resolved system errors and crashes, disk space problems, huge file sizes, and file system full errors.
• Performed OS upgrades and Patch loading as and when required.
• Wrote Technical documentation for various projects and worked with Technical writer to finalize the documents.
• Troubleshooting Backup and Restore problems Creation of LVMs on SAN using Linux utilities
• Monitored overall system performance, performed user management, system updates and disk & storage management.

Environment: : Red Hat Enterprise Linux, VMware, Shell Scripting, Apache, WebLogic, WebSphere.