SUMMARY:

• 7+ Years of experience in RHEL 3.0/4.0/5.0/6.0, SUSE Linux, Red hat Linux, Solaris, Unix Administration on Sun, HP Servers for Mission Critical and Enterprise applications.
• Experience in installation and implementation of Red hat Linux, Solaris 8, 9, 10, HP - UX, Windows NT/XP in Open Systems environment.
• Experienced in system administration, System planning, co-ordination and group level and user level management.
• Configuration, implementation and administration of NFS, NIS, DNS, BIND and Sun Cluster and LDAP on Solaris and Linux environment.
• Expertise in installing and managing the centrify software.
• Understanding and troubleshooting skills with networking communications and protocols such as TCP/IP, NFS, DNS, BIND, SMTP.
• Experience with Virtualization technologies like Installing, Configuring and administering VMware ESX/ESXi and created and managed VMs (virtual server) and also involved in the maintenance of the virtual server.
• Expertise in creating and managing Logical Volume Manager in Redhat Linux.
• Expertise in Installation, Configuration of Package and Patch Management.
• Experience in Disaster Recovery and Planning.
• Problem determination, Security, Shell Scripting.
• Perform multiplatform volume management using SVM, LVM, ZFS, NAS, and VERITAS volume manager.
• Red Hat Linux server administrator, including security patching, kernel tuning, RAID disk array mgmt, software packaging and installation using RPMs.
• Planning and Designing VMware VI3/vSphere (ESX3.5/ESXi 4.0/ESXi 4.1 and VMware Virtual Center)
• Experience on backup and recovery software like Net backup 5.0 and 6.0 on Linux environment.
• Installation, administration, implementation, testing and maintenance of complex and heterogeneous networks consisting of Linux (Red Hat), Sun Solaris 8/9/10, IBM AIX, Windows NT, and Peripherals.
• Installation, Configuration and Administration of VMware VSphere4, ESX 3.5 and ESXi Server, VMware View
• Installation, Configuration and Maintenance of Samba, Apache 2.4 Tomcat, Web Sphere and Jboss servers in Sun Solaris and Linux environment.
• Created Virtual Server environment using ESXi V4.
• Experienced in installing LAMP (Linux, Apache, MySQL, and PHP) for different applications.
• Hardware configuration, installation and management on Sun, HP servers and Workstations.
• Handling and generating tickets via the Remedy ticketing tool.
• Configured ILOs and Console connections for HP and SUN servers.
• Knowledge of Routers, Switches, Hubs, Firewalls, LAN, WAN Intranet, Internet.
• Maintained high availability of data using Oracle Real Application cluster Server and Sun Cluster.
• Excellent Project Management experience.
• Systems and network Planning and Administration.
• Backup and Restore Management like backup, Tape library and Disk library and EMC.
• Excellent verbal communication skills and strong documentation skills.
• Have the working knowledge on the Amazon web services.

TECHNICAL SKILLS:

Operating Systems: Red Hat Linux 3/4/5/6, IBM AIX 5.2/5.3/6.1/7.1, SOLARIS 9/10/11, SUSE and Cent OS, Ubuntu and Windows Operating Systems

Network Service: DHCP, Sendmail, HTTP, POP, Samba, NIS, NIS +, NFS, DNS, FTP/TFTP, ARP/RARP, SSH, TCP/IP, NTP, TELNET

Hardware: Sun Fire (/V440, V480, V490, V120), Sun Fire X4100, X4200, X4440 and X4500, Sun Fire 2900, 4900, 6900, Sun Enterprise Server T5140, T1000,T2000 and M3000,M4000,M5000,sun java directory server 5.2,HP DL-380 & DL-580, Dell Poweredge 2970.

Database: Oracle 8i/9i/11g, IBM DB2, MS SQL, MS-Access

Applications: Samba, VERITAS Net Backup, VERITAS Volume Manager, LVM, TIVOLI, WebSphere, TOMCAT, Apache

Programming Languages: C, C++, Java, JavaScript, HTML, Shell Script and Perl Script

PROFESSIONAL EXPERIENCE:

Confidential, San Antonio, TX

Sr Linux Administrator

Responsibilities:

• Building, administering, monitoring and troubleshooting RHEL4.x/5.x/6.x, AIX 6.1, HP BL460, DL 380 Dell and IBM X Series.
• Responsible for Monthly & Emergency Release activities such as moving the packages/code from Test, staging to Production using CVS, SVN. Professionally handled various issues in Release Processes.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Installation, configuration, administration of RHEL 5, 6 & Solaris 9, 10 using Kickstart, Jumpstart, custom configuration like package management, volume management of servers.
• Providing production support for multiples applications residing on Linux and Windows environments. Making sure Zero-Down time for enterprise critical applications by raising outages, escalations whenever necessary.
• Raised, handled and closed multiple Change Management and Trouble Management tickets accordingly with Standards.
• Performed and reported daily health checks for multiple application servers.
• Worked with Storage Area Networks (SAN) which consisted of Hitachi and EMC storage. Add, remove and resizing Logical volumes using LVM in Linux and implementing software RAID at installation time.
• Regular disk management, partitioning according to the requirements, creating new file systems or increasing existing ones, managing file systems and adding virtual swap space.
• Perform upgrades and maintenance on our Ubuntu & Amazon Linux servers.
• Define/setup network protocols, Network File Services (NFS), and Network Information Services (NIS) in Linux Environments.
• Installed and configured VxVM, VxFS and VCS on Linux Servers.
• Identify appropriate use of AWS/Cloud operational best practices.
• Build and configure large AWS environments.
• Experienced in AWS, setting up of EC2 instance with LAMP.
• Configured servers with various automation tools like Puppet, Chef, Jenkins and Docket on Solaris, Linux and Ubuntu servers.
• Creating VM instances using VMware/ESX on Linux and Sun Servers and migrating applications from others servers.
• Worked on configuring Puppet master servers and installing Puppet client on Linux servers.
• Performed the automation using Chef Configuration management and managing the infrastructure environment with Puppet.
• Configure and Implementation of Samba v3.0 to help printing and file sharing in the mixed environment.
• Maintenance level upgrades and software administration RPM installation on Linux.
• Scripting and task automation by Crontab using Bash, and Korn shell scripting.
• Created Bash Shell scripts to monitor system resources and system maintenance and Performed administrative tasks such as System start-up/shutdown, and Backup strategy and scheduled cron jobs for job automation.
• Performing O/S and kernel upgrades on Linux servers.
• Done with LAMP Setup in Ubuntu, Performance Tuning, Replication, Commands, Backup and overall administration.
• Experience with configuring firewalls using Linux. Familiar with configuring advanced features such as NAT, Port Redirection, and Logging.
• Performed host based SAN migration on Standalone and Cluster Linux servers Accessing and controlling LPARS using HMC
• Troubleshoot backup issues, perform manual backups & restore using VERITAS Net Backup.

Environment: RHEL4.x/5.x/6.x, AIX 6.1, HP BL460, DL 380 Dell and IBM X Series, SAN, LVM, RPM, Tivoli End Point, BMC patrol, WebSphere, VERITAS Net Backup, Puppet, Chef, AWS, Ubuntu, Shell and Perl Scripting, BMC Remedy 8.1, 8.1.0x, ColdFusion 9, 11.

Confidential, Dover, NH

Linux Administrator

Responsibilities:

• Installation of Red Hat Linux EL 5.x based server susing Kickstart in development, test and production environments.
• Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Performed project coordination function for evaluation, installation, monitoring, and maintenance of server software on variety of hardware platforms.
• Installed and configured servers using Red Hat Linux Kickstart method.
• Installation and configuration of Red Hat Linux5.3 on Dell PowerEdge, HP ProLiant and VMware ESX.
• Administered the UNIX System for clustered HP Servers with fiber attached SAN.
• Installation of SAMBA utility software for sharing files with Windows hosts
• Managing Disks/File systems using Logical Volume Manager for Red Hat Linux.
• Installation and configuration of Oracle RAC 11g on Red Hat Linux cluster nodes
• Used various networking tools such as telnet, rlogin, ftp and ping to troubleshoot daily issues.
• Proactive maintenance on systems by timely upgrading Patches to the systems and applications, Scheduling of batch jobs and cron jobs.
• Maintained Volumes and File systems using VxVM / VxFS for Oracle, DB2, MYSQL databases.
• Used VxVM to add disk, create new disk groups/volumes, resize, deport and import disk groups between servers.
• Created logical volumes, extending the file systems using LVM Creating and configuring Linux and Windows instances in AWS EC2.
• Launching Amazon EC2 Cloud Instances using Amazon Images (Linux/ Ubuntu) and Configuring instances with respect to specific applications.
• Creating snapshots and Amazon machine images (AMIs) of the instances for backup and creating clone instances
• Installing, Configuring and maintaining Puppet on Linux and Windows servers and creating repositories in Bit Bucket.
• Creating MySQL DB instances from Amazon RDS and performed basic MySQL database administration.
• Installing, configuring and maintaining Jenkins on Linux servers.
• Monitoring resources and application alerts using Amazon cloud watch.
• Experience with running SQL queries on Oracle and MySQL.
• Used VERITAS Cluster Server 4.1 to create high available environments for NFS, Web Logic and Send mail agents.
• Installation configuration of puppet master and puppet agent to ensure central administration, user creation, package update and maintenance of the infrastructure.
• Extending an existing Puppet for an operations tools start-up to enable seamless full-infrastructure provisioning for site-redundancy and staging/development environments
• Implementing Puppet for a start-up in preparation for compliance requirements due to an impending acquisition by a large, publicly traded company.
• Efficiency in installing, configuring, and implementing of RAID0, RAID 1, and RAID 5 levels using Logical Volume Manager.
• Configured Network Concepts NFS, DNS, NIS and DHCP, troubleshooting network problems such as TCP/IP, providing support for users in solving their problems.
• Installation and configuration of web hosting administration such as FTP, SSH, RSH, Telnet, and HTTP.
• Performed systems monitoring, upgrades, performance tuning and backup and recovery.
• Implementation of naming services like DNS with Bind 8.4.x and NIS.
• Troubleshooting and fixing the problems related to systems, software and day-to-day regular maintenance tasks of the system.
• Respond to emergency calls relating to server performance, diagnosis of problems, repairing problems or calling upon appropriate vendors to resolve the issue.
• Responsible for quality reviews and standards.
• Expertise in Red Hat Linux backup/restore with tar including disk partitioning and formatting.
• Provided 24x7 on-call / Remote Support for LINUX Production Problems on weekly rotation basis.
• Troubleshooting day-to-day server related issues and problems.

Environment: Red Hat 5.x/6.x, CentOS 5.x/6.x, VMware Virtual Client 3.5, AIX 5.3, 6.1, Windows Server, XP, 07,08, DNS, NFS, SMTP, Veritas File System (VxFS), Web server Apache 1.3x, Application server Jboss, SAN Storage, Sun Solaris 10, VMware, vSphere 4.1/5.1.

Confidential, Glendale, CA

Unix/Linux Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Linux, Solaris, AIX, HP-UX, Linux operating systems, Installation of patches and packages.
• Experience with VMware Virtualization using ESX hypervisor of Vsphere 4.0.
• Maintained Server 6.0. Backup data of Servers using Net Backup. Maintained Security of the Solaris Servers.
• Worked on Solaris 10 container technology, configured separate zones for various applications.
• Involved in Implementing and Administrating enterprise level data backup and recovery.
• Configuring and maintaining network services such as LDAP, DNS, NIS, NFS, Web, Mail, FTP
• Networks stack tuning for apache webservers. Netbackup management server builds using jumpstart and kickstart.
• Manage user’s accounts for the team access for Redhat Satellite server.
• Build Channels and pull packages from Master Redhat Satellite server.
• Experience in EMC CLARIION SAN, NAS, and DAS installed & configured, implemented clustering, high availability (HA), and Fail over.
• Experience in providing day-to-day user administration like adding/deleting users in local and global groups on Red Hat Linux platform and managing user’s queries.
• Experience in Administration, implementation and support of OS RHEL 4/5.
• Worked with DB teams for setting up ASM LUNs over SAN NFS and NAS environment aware, worked with Hitachi and oracle 7000 series from Unix perspective.
• Managed Network troubleshooting applications TCP/IP including Ethernet, IP addressing & Sub netting, routing
• Worked on creating user accounts, user administration, local and global groups on Solaris platform
• Administrated NFS, NIS, DHCP and DNS Samba services running on AIX, Sun Solaris and Red Hat Linux.
• Worked with Storage team to configure EMC SAN, NAS and ISCSI configuration.
• Worked with Backup Team to Configure the Master and Client Backup servers Using Veritas Net Backup and Recovery from tapes using UFS dump, UFS restore, and tar and cpio file system administration.
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.
• Monitoring the hosts and networks using sar, Iostat, VMstat, MPstat and Other Tools
• Managed Users for AIX, Solaris, HP-UNIX and Linux Servers and assigned rights to access network resources.
• Installing and Managing Virtual Center 5.5. Upgrading from VMware ESX server from 3.5.0, 4.0.0, and 5.0 in environment.
• Install and configure the hardware agents on the ESX servers for Hardware monitoring and alerts (SNMP & Open Manager).
• Installing, configuring and maintaining the VMware ESX 3.x / Virtual Center 2.x servers
• Installed packages using YUM and RPM.
• Frequently checked ESX server logs for any problems and troubleshoot whenever necessary.
• Implemented a Database enabled Intranet web site using LINUX, Apache, MySQL Database backend, HTML and PHP scripting for Database access via web browsers.

Environment: Redhat Linux, RHEL, Solaris 9/8/10, HP-UX 11.0, AIX 5L,Sun Enterprise 450/420R/250 Servers, Ultra Enterprise 2/1 Servers, ESXi 4.0, ESX 3.5, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC server 1000/20, HP 9000 K,L,N class server.

Confidential, Savannah, GA

Linux Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Solaris, AIX, HP-UX, Linux and Windows-NT operating systems.
• Installation Packages and patches.
• Supported 24/7 high availability production servers.
• Monitoring System using HP/ITO, Do kernel tuning to enhance the system Performance.
• Configuration and Administration of DNS, NIS, NIS+, NFS, send mail.
• Installation, configuration and remediation of various Security software
• Installation and configuration of Netscape and Apache web server and Samba Server.
• Jumpstart installation. Writing Shell and Perl Scripting for automation of job.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Interaction with vendors for Hardware and software supports.
• Disk and File system management through LVM and SVM.
• Installation and configuration of Apache and Websphere Server in Linux Platform.
• Backup management through Net backup. Creation of Volumes and pools and scheduling the job.
• Installation and configuration of Network Printer with Centralized control of print client.
• Database Backup and Recovery. Performance Monitoring and Tuning
• Planning and setup of Disaster Recovery Servers.
• Worked extensively on VERITAS Operations Manager (VOM).
• Lockdown the local accounts to secure the environment using NIS.
• Planned, scheduled and Implemented OS patches on both Solaris & Linux boxes as a part of proactive maintenance and Secure Shell (SSH) implementation.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.

Environment: Solaris 8/9/10, HP-UX, 10.x/11.x, AIX 4.x/5.x, Windows NT 2003/2000/ XP, NT, Redhat 5, SUSE, Sun Enterprise 450/420R/250 Servers, Ultra Enterprise 2/1 Servers, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10, Sun Sparc Ultra 1,5,10.

Confidential

Linux System Administrator

Responsibilities:

• Installed RedHat Linux Enterprise Server 5.3 and 5.4 on HP Servers using Kickstart at different Merck sites around the world in VMware and Physical Servers.
• Installed and maintained several Linux and Windows servers on virtual environment.
• Created mount points for Server directories, and mounted these directories on the Servers.
• Diagnosed and troubleshoot software and hardware related problems.
• Implemented & installed RedHat AS 4.0/3.0operating Systems on LPAR using HMC. Good knowledge of installing UNIX based operating systems on LPAR.
• Installed and deployed operating system and security related patches and fixes.
• Monitoring the performance and throughout or load on a server, server farm, or property.
• Performance tuning of activities to ensure the most efficient use of existing infrastructure.
• Experience in HMC administration, code update and taking HMC console backups.
• Setting up installable image of AIX operating system on master server and apply it on new clients.
• Deploying the Virtual I/O Servers and Clients on P Series.
• Assigning storage luns from the VIO server to VIO clients.
• Experience in AIX system backup and restores through different methods like conventional mksysb on tapes, mksysb through NIM, sysback through TSM and NIM.
• Good working knowledge of installing, configuring, and upgrading IBM Blade Center’s Management Module.
• Implemented, installed and supported High availability Cluster HACMP 5.3 on IBM PSeries platform.
• Involved in Storage management, LVM, File system management, User account management, data backups and user’s logon support.
• Involved in testing of products and documentation of necessary changes required in this environment.

Environment: Redhat Linux, Sun Solaris,Suse Linux, AIX,SAN, Samba, NFS, VMware ESX and VM ware server, Apache, Tomcat and Jboss, Oracle Cluster, Web sphere servers.