SUMMARY

• Accomplished System Administrator Network Administrator and Application Support Engineer with 6 years of experience working on Redhat and Centos Linux 3.x/4.x/5.x/6.x/7, IBM AIX, HP - UX and Windows environments
• Extensive Experience in installation, configuration, backup, recovery, and maintenance, Support of Red hat Enterprise Linux on Dell Poweredge and HP Servers using Custom and kickstart installation.
• Solid Experience in installation, configuration of IBM HTTP Server, Apache HTTP Server, Iplanet Web Server, IIS and also experienced in configuration of Virtual Host for Apache HTTP Server HTTP Server.
• Setting up and administering Veritas Cluster for HA (DNS, NFS, Oracle) Scalable Webserver and Directory Server Data Services.
• Expertise in applying plug-ins for WebSphere Application Server with Apache HTTP Server and IBM HTTP Server.
• Proficient in OS migrations, upgrades and BIOS and NIC firmware upgrades.
• Adequate work experience with Database administrators in kernel tuning for Oracle installations.
• Expert in configurations of SAN and NAS and LVM Management.
• Expertise in handling of SAN (SAN arrays; HITACHI, EMC) and knowledge in configuration and administration of Storage systems such as EMC Isolon ONE FS, VNX 5500 and 5700
• Hands on experience in installing and upgrading Packages and Patches, software configuration management, version control, service pack management and troubleshooting connectivity issues and security problems.
• High ability to implement day-to-day tasks in Redhat Linux include upgrading rpms, kernel, and HBA driver; configure SAN Disks, LVM file system and Multipathing
• Experience in creating and managing user accounts, disk space, security, rights and process monitoring in Red hat Linux, Centos, Ubuntu and IBM AIX
• Proficient in configuration of NIS, NIS+, LDAP, DNS, DHCP, NFS, Auto mount, SAMBA, Send mail, FTP, remote access, ActiveDirectory,Protectionmanagement and Security trouble shooting skills.
• Proven ability in administration scripting and automation of tasks and management using CRON .
• Experienced in configuring, managing and troubleshooting Webservers such as http, Tomcat 7.x/6.x/ 5.x/4.x/3.x & Apache Server 2.x/1.x.
• Extensive experience of Oracle, MS SQLServer and MYSQL.
• Expert in implementation of teh workload Management (WLM)
• Experienced in installing, configuring, managinging and troubleshooting VMware ESX Servers and building guest OS using cloning and manual administration of Vmware Vsphere client..
• Install and configure Red hat Linux cluster suite using Conga and VERITAS cluster servers for failover purposes, to provide redundancy in teh environment.
• Analizing, troubleshooting, and resolving of Red Hat Linux and Server Network problems in a DEV,UAT and Production Server environment.
• Expert in Providing recommendations for teh improvement of existing systems HW & software to system manager.
• Capacity Planning, system design, implementation plans, and updated documentation for various clients.
• Team player with Excellent interpersonal ability and a very good team leader with good communication Skills. Out-standing problem solving, ability to work under pressure, decision making skills and fast learning and grasping capability of new emerging technology.

TECHNICAL SKILLS

Operating Systems: Linux (Red Hat 3.x, 4.x, 5.x, 6x, 7x SUSE 10, Cent OS), IBM AIX 5L(5.1,5.2,5.3), Windows 2000/NT4.0, Windows /XP/2000/win7, VMware ESX 2.x,3.x.

Hardware: IBM RS/6000, P Series 520, 550, 570, 575, 590, 595, 630, 650, 670, M80, S80, H70 and H80, IBM ESS (Enterprise Storage Server), DS8000, IBM 3494, 3583 Automated Tape Library, Brocade, EMC Symmetrix, Isolon, Vnx 5500 and 5700, Hitachi arrays, Backup Devices, Ethernet Hubs, Routers, Repeaters, Jukebox, Printers DELL Poweredge 1650,2850,2950,2970,6400.

Web/Application Servers: Apache Server, Tomcat 4.x/5.x/6x, Web Sphere Application Server 3.5, 4.0, Web Logic Server, HTML, DHTML, XML, Resin Pro 3, 4. Nginx

Applications: HACMP, Samba, Tivoli (TSM), Nagios, VERITAS Netback up, VERITAS Volume Manager, LVM, EMC Power path.

Networking: TCP/IP, NIS, NFS, DNS, DHCP, Confidential Routers/Switches, WAN, SMTP, LAN, FTP/TFTP.

Backup: tar, ufs dump, Veritas net backup and Tivoli Storage Manager.

PROFESSIONAL EXPERIENCE

Confidential, Dallas, Texas

Unix Systems Administrator

Responsibilities:

• Installation, Management, administration and troubleshooting of all Atlassian Application products such as Jira, Bamboo build service, Stash repository and Jenkins.
• Solely Installed and upgraded, Configuration and Administration of 500 physical and virtual linux systems. (Redhat, Centos and Ubuntu servers).
• Trubleshooting Web Servers (Resin Pro, Apache Http) and Application servers on a regular basis with very low downtime.
• Manage, architect, buildandmonitor highly available, secureUNIXenvironments.
• Build high volume cluster servers for applications serving critical production Big IP F5 for high redundancy.
• Backup administration through Tivoli Storage Manager and Overland Neo Library.

Confidential, Dallas, Texas

Unix Systems Administrator

Responsibilities:

• Installed, upgraded, configured RHEL 5.x, 6.x, IBM AIX 6.1, 7
• Provide Unix/Linux administration, network operating center (NOC) administration, LAN/WAN/VPN administration, VMware administration, and intrusion detection and prevention (IDP) monitoring. Also manage FTP servers, AD/DNS, wireless access points and load balancers. Design and implement highly available (HA) and disaster recovery (DR) solutions .
• Worked on IBM power6 and power7 technology.
• Installed & Updated HMC with corrective service package and teh latest maintenance fixes.
• Obtained and applied firmware updates to HMC and p servers.
• Conducted backups and restores, problem-determination on file systems.
• Creating Backup account for new users and Deleting account for teh retired or deleted users.
• Tuning teh kernel parameters based on teh application/database requirement.
• Troubleshooting and analysis of hardware and software failures for various servers (core dump and log file analysis).
• Installed and upgraded Softwares & Patches, configuration management, version control, service pack. & reviewing connectivity issue regarding security problem. Maintain various level of documentation, Co-ordinate with change management.
• Performance tuned db2 and oracle RDBMS.
• Configure EMC Powerpath, VERITAS dmp and trouble shoot NetBackup problems.
• Configuring SUDO and granting root permission to Backup Admins/DBAs to perform root related activities.
• Worked on Cluster file systems and regular jfs.
• Responsible for troubleshooting cluster (sfrac and hacmp) crashes.
• Wrote shell scripts to automate regular Unix admin tasks.
• Planned, installed, and configured Network File Systems, incorporating teh automounter. Evaluated and optimized system performance and memory and paging space utilization, using sar, vmstat, iostat and other tools.
• Configured SSH public & private keys, telnet,rlogin services on Linux servers.
• Managed public & private keys for SSH login.
• Configured system devices, determined hardware compatibility, configured and monitored error logs, installed optional software and service updates.
• Configured & supported BIND on Linux and Solaris platform.
• Worked on Srdf Splits.
• Configured and managed Apache Web Server on Linux for web based applications
• Review task plan, back out plan for teh deployment.
• Coordinating between various teams involved in application & infrastructure deployment
• Working with vendors (Oracle, IBM & HP) and internal business units to maintain teh minimum downtime of teh servers.
• Project management including Documenting processes and Capacity Planning.
• Creation and Maintenance of User Accounts, permissions & file systems.
• Troubleshooting Day-to-Day File system, Memory and CPU and other application issues with various Servers on different platforms Unix Platforms.
• Installation, configuration, crash recovery, performance tuning & administration of Enterprise linux

Environment: HP Blades, SunFireE25K, T2000, T4, V440,V490,V890, V1280,15K, IBM P6 and P7. SUN Solaris, Unix, Redhat Enterprise Linux3.x, Fedora Linux, E15K, E10K, E6500, Sun Storage Array D1000, A5000, T3,Storagetek L700, RS/6000 and P-Series Servers, Web logic 8.1, Veritas Volume manager, Veritas netbackup, Veritas cluster server.

Confidential, Burbank,CA

Linux Server Engineer

Responsibilities:

• Installation, Configuration, Maintenance and Development of about 250+ Linux Servers mainly RedHat Enterprise linux, Ubuntu and CentOS
• Setup, create, clone and configure teh virtual servers using VMware Vsphere Client
• Design, Configuration, Administration and Development of LAMP (Linux Apache MySQL PHP) based architecture and other open source applications.
• Create and configure guest virtual machines using VMware.
• Assisted teh team and played a key role in Datacenter migration up to cloud infrastructure .
• Worked on creating, configuring and administration of teh filesystems (ext3,ext4/OCFS2) using Logical Volume Management LVM.
• Deploy, configure and manage Linux instances in Amazon Cloud/EC2 environment.
• Worked with job scheduling tools crontab and autosys.
• Hands-on experience in managing post-install configuration using teh tools like puppet, landscape.
• Follow Change Management process prior to making any changes to production systems.
• Provided L3 support for infrastructure, incident management and Network teams by halping in problem solving and troubleshooting issues.
• Actively participated in day-day NOC activities and 24x7 on-call rotation.
• Configuration and administration on standard UNIX services like SSH, FTP, NFS, DNS, LDAP, SSL and Sudo.
• Monitor and check teh status of teh servers using teh monitoring tools like ipmonitor, nagios etc.
• Worked in developing and making changes in UNIX scripting languages (PHP, Bash,Perl and Korn)
• Worked efficiently in resolving issues, tasks and production changes through Service now ticketing system.
• Worked with networking team in understanding teh limitations of firewall, domain controllers, load balancers and switches.
• Web Server, Application Server Performance Monitoring data using Tivoli Performance Viewer and reviewed historical Tivoli logs for root cause analysis, recurring events and involved in troubleshooting teh recurring problems.
• System Backup using tar, cpio for local systems and Veritas Netbackup for enterprise wide backup and recovery
• Documenting each step and testing procedures before teh migration.
• Take full gathering of data and ensure everything planned and documented so other team members can use it during their support hours.
• Provided 24/7 on call support on UNIX Production Servers. Responsible for maintaining UNIX security on Redhat Linux and IBM AIX.

Environment: HP ProLiant DL580 and DL380, IBM P Series, Websphere 10.0, Oracle 11g/10g/9i, MS SQL, Logical Volume Manager, Veritas netbackup, HACMP with EMC, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x, RHEL 6.x/5.x/4.x.

Confidential, San Jose, CA

System Administrator

Responsibilities:

• Installation, Upgradation and configuration of RedHat Linux 4.x,5.x and IBM AIX OS IBM Blade servers and P-Series Servers using Kickstart, NIM and CD media.
• Responsible for installation, configuration, support and performance monitoring of high profile applications running on IBM WebSphere Application Servers, WebSphere Process Server and integrate with different Web Servers and configuration of web apps
• Upgraded WebSphere ND 6.xand 7.x with refresh packs and fix packs. Migrated all teh applications on WebSphere 6.0.2.9 and to 6.1.0.9
• Implemented teh Clustering Topology dat meets High Availability and Failover requirement for performance and functionality.
• Installing and configuration and maintenance of Veritas Net Backup 6.0/5.x.
• Worked on HACMP clusters in SAN environment (EMC).
• Creation of Logical volumes (LVM) for Red Hat Linux and IBM AIX operating systems.
• Configuration and Administration of NFS, NIS, NIS+, LDAP, DNS, Samba and Sendmail Servers.
• Working knowledge of VMware (Virtualization).
• Upgrading VMware server 2 to 2.x
• Installed RPM packages and LPP on Linux Servers and IBM P-Series AIX Servers.
• Oracle installation & system level support to clients.
• Installed and configured teh iPlanet (Sun One) Web servers & setup firewall filtering with Squid Proxy server for web caching on Sun Solaris.
• Written shell scripts to automate teh administrative tasks using cron and at in Redhat Enterprise linux.
• Validated monitored and Analysed Batch Jobs.
• Backup Schedules for Linux Servers using DLT Tape drives.
• Performance monitoring using Sar, Iostat, VMstat and MPstat on AIX servers.
• Logging events and forcing crash dumps, securing servers and troubleshooting issues.
• Troubleshooting and resolving of problems related to hardware, operating systems, third party applications and scripts.
• Initiating Backups on daily basis and monitoring teh scheduled backups.
• Provided Oncall Support for Redhat Linux and IBM AIX server environments.

Environment: Redhad Enterprise Linux 4.x, 5.x,AS3.0, AS4.0,VXFS, IBM P Series AIX servers, Veritas Volume Manager, Veritas Net backup, DNS, NIS, NFS, Sendmail, Oracle 10g, MYSQL, Weblogic 10x, Websphere VMware 2.x and HACMP.

Confidential, Dallas, TX

System adminintrator

Responsibilities:

• Installation, Configuration & Migration of Unix/Linux operating systems.
• Involved in 24X7 Production support,Build and Migration Assignments.
• Worked Primarily on RHEL 4/5,CentOS 5.5 and Solaris 10 Operating Systems.
• OS cloning using SystemImager. Create Golden client and copy teh image of golden client at system image server.
• Install new OS using system image of Golden client.
• Installation Packages and patches.
• Rescan teh storages on newly installed servers.
• Work with application team to start applications and resolve any issue.
• Troubleshooting Networking issue after migration.
• Installation, configuration and remediation of various Security software.
• Migrated ORACLE RAC servers using system Imager and TEMPeffectively worked with teh database team to bring up/down teh databases.
• Writing Shell and Perl Scripting for automation of job.
• Migration and troubleshooting of Veritas Cluster.
• Disk and File system management through Logical Volume Manager including GFS (Global File system)
• Analyze User Requirements; propose alternative solution in setting up local area network and maintain existing network up and running.
• Ensuring teh use of performance data and historical metrics to TEMPeffectively plan for growth needs, plan upgrades, migrations, and optimizations, new implementations, identify and resolve efficiency issues, and improve functionality.
• Configured DNS server and DHCP for teh new server builds.
• Installation, Configuration and support for Redhat Satellite Server.
• Redhat Satellite Server for upgrading and patching Linux Servers.
• Used package management tools like mrepo and YUM for supporting various distributions of linux.
• Managed and configured hundreds of servers using Puppet.
• Tuning teh kernel parameters based on teh application/database requirement
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x.
• Installed and configured GFS cluster for holding databases.
• Manage users accounts for teh team access for Redhat Satellite Server.
• Build channels and pull teh packages from master Redhat Satellite Server.
• Troubleshooting hardware, software and configuration problems for various protocols and topologies.
• Analyze, review and alter existing network to increase operational efficiency or adapt to new requirement.
• Worked on Backup tools like Tivoli Storage Manager(TSM).
• Administered teh UNIX System for clustered HP Servers with fiber attached SAN .
• Worked on EMC and Hitachi Storage.
• Used softwares like EMC powerpath and Veritas Dynamic Multipathing for connectivity with SAN.
• Experience in Servers consolidation and virtualization using VMware infrastructure Client, VMware ESX, VMware Vsphere Client.
• Support and administer various network infrastructure components to ensure uptime and reliability. Routine administrative tasks, like troubleshooting and correcting problems in teh existing network.
• Manages process to ensure product release, applications, and corporate block point cycles are synchronized.
• Worked on making DSN entries to establish connction from server to DB2 database.
• Used Proprietary Monitoring toolslike CA and Groundworks.
• Managed central Logging server for maintaining logs and scheduled CRON jobs to delete older logs.
• Managed Apache for Web hosting Applications.
• Configured centrallogging management using OPEN LDAP.
• Experienced working on different remote consoles like HP-ILO,IDRAC,RackableRoamer.

Environment: Red Hat Linux (RHEL 3/4/5), Logical Volume Manager, Veritas Cluster Server, Global File System, Redhat Cluster Servers, Oracle, System Imager, SAN, NAS, EMC, Single Sign On, JBOSS, LDAP, DNS, NFS, TCP/IP, SAN, NAS, Nagios 2.x, Oracle 9i/10g, Tivoli Storage Manager 5.x, VMware 2.x, Shell Scripting

Confidential

Jr. Linux Administrator

Responsibilities:

• Maintaining Linux servers in general (security, software updates, system diagnosis, debugging, tuning, advanced troubleshooting, etc
• Plan and recommend network hardware, software and architecture.
• Installation, upgrade and patching of Linux operating systems.
• Installed and configured DNS Server and Configured DHCP.
• Regularly review system-monitoring results to track system metrics and identify performance issues and opportunities for optimization.
• Provide timely insight and advice to user inquiry.
• Creating and maintaining system administration documentation.
• Providing back-up, restore, recovery, and data storage services.
• Troubleshooting and resolution of hardware and software issues.
• Ability to write and modify shell scripts to monitor and automate system administration tasks.
• Creation of Users and groups according to teh developers’ requirements.

Environment: Redhat, Novell, CentOS, apache, MySQL, HP blade server