SUMMARY

• Overall 8+ years of experience in RedHat Linux, Windows and AWS Administration, which includes Server build, Implementation, Migration, Decommission, Performance tuning, Patching vulnerabilities, Upgrades, Identifying security risks, Kernel panic errors, troubleshooting linux hardware failures with the help of Data center people.
• Experience in Redhat Satellite 6 administration.
• Experience in HP - ILO Administration.
• Experience in Configuration Management tool Puppet.
• Experience in AWS which includes Creating EC2 instances, adding EBS volumes for EC2 instances.
• Creating and adding Security Groups to instances for controlling the inbound and outbound traffic and Creating Snapshots.
• Installing and configuring the Vsphere client .
• Upgraded the Machines from VMware ESX5.1 to ESX 5.5.
• Experience in VMware. Installed and monitored Virtual environments with ESX 5.x, 4.x servers.
• Experience in Setting up and registering ESXi hosts in VCenter.
• Experience in Vmotion.
• Implemented Kick start for Redhat environments through RHN.
• Strong in Package Administration (RPM, YUM) User administration (creating user ids, password management, permissions).
• Hands on experience with Installing, configuring and maintaining RHEL LVM.
• Security administration, multiple Backup & Recovery technologies and maintenance of various activities.
• Automation of Jobs through Crontab.
• Backup critical OS data /etc, /home, /usr/local.
• Monitoring System components such as CPU, Disk and Swap space.
• Experienced in Performance tuning LINUX servers using tools like iostat, top, prstat, vmstat etc.
• Work independently as a strong contributor as well as a collaborative player in functional team environment; Offer a strong commitment to learn new complex concepts and applying them rapidly.
• Working with Application team to install and support their application software on Linux boxes.
• Expertise in system monitoring and software installation tools including Tivoli, Nagios, Nimsoft .
• Expert in Installing, configuring and maintaining Apache, Samba Servers.
• Followed ITIL Processes for Incident management, Change management and problem management.
• Experienced in DNS, NFS, FTP, SFTP and system troubleshooting skills in Red Hat Linux.

TECHNICAL SKILLS

Operating Systems: Red Hat Enterprise Linux 5.0/6.0, AIX 5.3/6.1, Windows 2000/2003/XP/Vista

Hardware: EMC Storage Disk Arrays, Symmetrix/ Clariion

Protocols: TCP/IP, SMTP, SNMP, FTP, TELNET, UDP.

Naming services: DNS, NIS and NIS+, NFS.

Web-Server: Apache /http server, IIS

Server Management Tools: LVM, LDAP VMware.

Tools: Service now, Remedy, Amazon Web Services, Confidential Citrix, Confidential Maximo, Tivoli, TEMS console, TEC, Nagios, Nimsoft and HP ProLiant ILO 4 Console, CloudWatch

PROFESSIONAL EXPERIENCE

Sr.LINUX SYSTEMS ADMINISTRATOR

Confidential - Philadelphia, PA

RESPONSIBILITIES:

• Installation, Configuration & Upgrade of Linux, AIX operating system.
• Installation, Configuration & Administration of RHEL 5/6,AIX 5.1/6/7 and Windows servers which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Troubleshooting RHEL Server down issues.
• Installing and Configuring Puppet master and puppet agents.
• Managing new package installation on all the hosts from puppet server
• As per requirement developing puppet modules which consist set of classes and packages and files.
• Troubleshooting Puppet agents.
• Launching & Managing EC2 Instances on Linux and windows.
• Good understanding and exposure of AWS console.
• Assigning Elastic IPs to instances.
• Authenticating both linux and windows using keypairs.
• Creating customized AMI’s.
• Attaching and detaching EBS volumes to EC2 instances.
• Installation, configuration and administration on Redhat Cluster on various business critical databases and application production servers.
• Successfully configured Kickstart in Linux.
• Installing, Configuring and Troubleshooting the ESXi and Virtual Machines.
• Involved in live migration of Virtual Machines and Virtual machines files using the VMotion.
• Providing and maintaining user access in VMware virtual Center, configuring mail alert for any failure in HA, DRS, CPU and memory.
• Creation of template and deploy VMs using template.
• Creating User accounts, Mail account, groups, configuring printers, and etc.
• Planning & creating volumes and Scheduling the job, making sure the recommended processes are taken care while volumes are created.
• Written Shell scripts to automate the administrative tasks using cron and at in Solaris and Linux.
• Handled ILO (HP) for console access to the servers.
• RPM and YUM package installations, patch and other server management.
• Applied appropriate support packages and Vulnerability patching on Linux boxes to maintain system integrity using RPM.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as TCP wrappers.
• Configuring YUM repositories.
• Performed daily housekeeping functions, such as establishing new accounts, creating and resetting passwords, developing scripts, performing system backups and recovery, and installing software patches and updates.
• Worked with database administration staff to ensure optimal performance of databases, and maintain development applications, databases, and ensure database backup completed successfully.
• Creating clusters by adding the ESX hosts to Vsphere client.
• Creating the Templates and Virtual machines based up on the required OS.

Environment: RHEL 4/5/6, AIX 4.3, 5.1/5.3L/6/7,Windows 2003/2008,HP-ILO console, Amazon Web Services, Service Now, VMware ESXi 5.5/5.1, VSphere 5.0, VCenter 5.0, Nagios,, CloudWatch, Shell scripting .

LINUX / UNIX ADMINISTRATOR

Confidential -Mountain View, CA

RESPONSIBILITIES:

• Installation, configuration and Operating System upgrade on Red Hat Linux 5/6.
• VMware and Hyper-V Administration.
• Configured and maintained new VM's and Installed Microsoft Windows 2008/2003 Servers, managing VM's and ESX servers.
• Configured the standard cluster settings on vCenter clusters.
• Monitoring and troubleshooting vSphere performance: CPU, memory, disk/storage, and other issues.
• Created/cloned VMware Virtual machines for Prod environments.
• Creating new file systems, mounting file systems and un mounting file systems.
• Experienced in package installations, patch and other server management.
• Experienced in User Administration for adding and managing new users, groups.
• Planned, scheduled and Implemented OS patches on both AIX, Linux boxes as a part of Proactive maintenance.
• Involved in installing, integrating, tuning, and troubleshooting Apache Tomcat, WebSphere and WebLogic application server.
• Creating Raw Devices & Block Devices in Red Hat Linux.
• Created disk groups, volumes, volume groups and RAIDs using VERITAS Volume Manager.
• Monitored server and application performance and tuned using various native commands like vmstat, sar, iostat, top, etc.
• Configured SAN/EMC (Symmetrix/Clariion) Disk Storages devices, DNS and NAS storages on all UNIX and Linux servers.
• Wrote Shell Scripting using Bash for redhat server, Managed cron jobs, batch processing and job scheduling.

Environment: Red Hat Enterprise Linux 5/6,Remedy Ticketing Tool, VMware ESXi 5.1/5.0, VSphere 4.0, VCenter 4.0,Splunk, Nimsoft, Nagios

LINUX SYSTEMS ADMINISTRATOR

Confidential - Huntsville, TX

RESPONSIBILITIES:

• Understand server virtualization technology such as VMware. Install, test and implement DB2 database management systems and related products.
• Troubleshooting of ESX & Virtual Machines.
• Creation of templates from VMs and deploying VMs from templates.
• Maintaining user access in VMware virtual Center, configuring mail alert for any failure.
• Developing scripts in SHELL to automate the process.
• Responsible for data backup and recovery using UNIX / Windows versions of Legato Networker.
• Worked closely with DBAs, client teams and management ensuring that systems are managed per established service level agreements.
• Experienced in package and patch installations.
• Knowledge in VERITAS Volume manager (VxVM 4.1, 5.0) Creating new file systems.
• System administration, maintenance and monitoring various day-to-day operations.
• Experience on File system and Disk management.
• User management Creating and managing user account, groups and access levels.
• Monitoring Virtual memory, adding additional swap space as needed.
• Implemented NIS and NFS for administrative and project requirements.
• Scheduled tasks by using crontab& at.
• Responsible for handling the maintenance activities.
• Customer Support, Configuration, monitoring, troubleshooting of various

Environment: Red Hat Enterprise Linux 5/6, Tivoli, Remedy Ticketing ToolIBM Citrix, Confidential Maximo,VXVM, VMware ESXi 5.1/5.0, VSphere 4.0, VCenter 4.0,Shell scripting (Perl, Bash).

LINUX/UNIX SYSTEMS ADMINISTRATOR

Confidential, Radnor, PA

RESPONSIBILITIES:

• Installation and customization of Linux servers.
• Working closely with Vendors on Hardware Problems, software fixes.
• Administration of Sun/Oracle Solaris application and database servers.
• Data Centers support contains 100+ servers, with regular monitoring.
• Installation and configuration of VERITAS Storage Foundation Suite (Volume Manager, Cluster Servers & VERITAS File systems (Vxfs).
• Installation of SSH and configuration of keys bases authentication.
• Installation of HP Quality Center: Quality Control check & Testing tool on Solaris platforms & provided constant support for the users.
• Integrating LINUX,UNIX file systems using packages like SAMBA. Setting up printers on LINUX,UNIX / NT machines to work seamlessly across platforms.
• Configuring Virtual Machines under VMware ESX Servers to install Red Hat Linux guests.
• Installing and configuring Tivoli Agents on Linux servers.
• Configuring standard and customized situations as per the client request.
• Troubleshooting Agent offline issues and TEC down, heartbeat issues and up gradation of Tivoli Agent versions.
• Configuring Data collections and providing historical enterprise trend reports.
• Allocated resources to the Virtual Machines (VMWare) based on the requirements from the Users.
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc.
• Administration of NFS, NIS, DNS, Samba and Send mail servers.
• Setup & Administration of Alerts to monitor the health of the servers.
• Provided 24X7 support for large number Production, Development and Test systems.
• Setup, maintain and management of user accounts and groups according to the security needs and adding the packages and patches when needed.

Environment: Solaris 10, AIX, Sun Fire 15K, Sun Fire 6800, 4800, V880, V420R, E220R, E450, T2000, T5120, M3000, M5000, VERITAS Volume Manager, Red Hat Enterprise Linux 5/6, Remedy Ticketing Tool, Tivoli, TEMS console, TEC.

UNIX ADMINISTRATOR

Confidential

RESPONSIBILITIES:

• Providing Level 1 Remote UNIX Administration support for Bharti Airtel data center having 1400 UNIX (Solaris and HP) servers.
• Monitoring servers through OpManagerTool and Tivoli.
• Using Remedy Ticketing tool to resolve the issues.
• Writing shell scripting for automation of job.
• Managed Users on Unix/Linux and Windows systems.
• User administration (Adding and administering user accounts).
• Disk management, Process management and File system management.
• Monitoring System Performance of Virtual memory, Swapping, Disk utilization and CPU utilization.
• Working on Firmware upgrades on Solaris Servers.
• User management Creating and managing user account, groups and access levels.
• Implemented NIS and NFS for administrative and project requirements.
• Monitoring Virtual memory, adding additional swap space as needed.
• Customer Support, Configuration, monitoring, troubleshooting of various
• Resolve the Incident, SR's and Problem Tickets within SLA.
• Handling ON-CALL issues, After BAU hours.

Environment: Red Hat Enterprise Linux 5/6, OpManagerTool, Remedy Ticketing Tool, Tivoli .