SUMMARY

• Over 8+ years of experience in Linux/Solaris systems administration and support.
• Experience in installation, configuration, and maintenance of Solaris 9/10/11 and RHEL 5/6/7.
• Installed Solaris using Jumpstart and Linux using Kickstart.
• Responsible for providing 24x7 production support in large datacenter environment.
• Experience in administering Linux running on VMware ESX, vSphere and Citrix XenServer.
• Worked on Solaris Zones and LDOMs running on Solaris 10.
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, and performance tuning on UNIX/Linux systems.
• Responsible for OS patching RHEL, Solaris OS on large range of server hardware.
• Strong knowledge in OS installations, migrations, upgrades on both physical and virtual environments.
• Extensively worked in setting up two and three node VCS, Oracle RAC and RHEL cluster.
• Worked on automation tools including HPSA, Oracle OpsCenter, RedHat Satellite, and VMware vCAC.
• Experience with VERITAS Volume Manager (VxVM), VERITAS File System (VxFS), VERITAS Net Backup, and VERITAS Cluster Server.
• Extensively worked on SPARC to LDOM migration.
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, Sendmail, and SFTP.
• Experience on Webservers such as Tomcat 3.x, 4.x, 5.x & Apache Server 1.x, 2.x and integrating them with Weblogic 10.x servers.
• Strong knowledge on Linux, Automation Tools (Chef or Puppet), AWS Services (AWS Cloud platform and its features which includes EC2, VPC, AMI, EBS, CloudFormation AWS Config, Autoscalling etc.
• Experienced in clustering load balancing techniques to ensure High Availability and Disaster Recovery.
• Responsible for migrating Linux physicals to Virtual machines using Vmotion and Vconverter.
• Experience on Zabbix of monitor the servers and applications.
• Strong understanding of infrastructure automation tooling using Ansible.
• Expertise in scripting for automation and monitoring using Bash and Perl scripts.
• Worked with Database and Middleware administrators to tune kernel parameters.
• Installation and configuration of Weblogic, Jboss, and Web Sphere 5.1/6.0 Application Server.
• Experience on CFEngine infrastructure automation and continuous operation.
• Prepared documentation for standard operating procedures of various administration tasks.
• Team player with good management, analytical, communication and interpersonal skills.
• Cognitive about designing, deploying and operating highly available, scalable and fault tolerant systems using Amazon Web Services (AWS).
• Broadly worked utilizing AWS benefits alongside wide and inside and out comprehension of every last one of them.
• Created users and groups using IAM and assigned individual policies to each group.
• Deployed and supported Memcache - AWS Elasticache.
• Created AWS Route53 to route traffic between different regions.

TECHNICAL SKILLS

Operating Systems: RHEL 4, 5, 6, 7, Solaris 8, 9, 10, Ubuntu 10.04, 12.04, SuSE 9, 1011

Hardware: HP Proliant, Blade servers, Sun Servers E4500, E6500, E6900, E10K, E15K, E25K, V280, V490, V880, V890, M3000, M4000, M5000, T5120, T5220, T5420, T4-1, T4-2, T5-1, Dell PowerEdge R710, R720, R810, R820, DMX3 and DMX4 Storage Arrays, EMC Symmetrix and CLARiiON.

Software: VERITAS Volume Manager, VERITAS File SystemVERITAS Cluster Server, VERITAS Netbackup, MS- Office/MS-Project.

Web/ Application Server: Tomcat, Apache DB2, Oracle R11&R12

Network Protocols: DHCP, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP, and tcpdump.

Cluster Environment: VERITAS Cluster Servers, Oracle RAC, Redhat Cluster

Programming Languages: C, SQL, HTML, PHP, XML, Json, Ruby, Perl and Shell Programming, JSP, Python

PROFESSIONAL EXPERIENCE

Linux Administrator

Confidential - Austin, TX

Responsibilities:

• Administration of RHEL 5, 6, and 7 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Installing RedHat Linux using kickstart and applying security polices for hardening the servers.
• Primary member of the team in setting up VCS on a two node and three node VCS clusters runing oracle database.
• Performed OS upgrades, migrations on SuSE and Solaris
• Primary member of the team to successfully implement SPARC migration from Sun hardware to LDOMs running on Solaris 10 and Solaris 11.
• Experience with change control management using BMC Remedy tool in handling Work Orders on production systems in a large datacenter environment.
• Core member of the team for Reston exit project to succesfully migrate both virtual and physical solaris and linux servers.
• Extensively worked in building and configuring Solaris hypervisors hosting ldoms.
• Configured VPC for hypervisors running Solaris 10/11.
• Migrated Linux virtual machines from one vCenter to other for Soft Layer Project.
• Primary member of the OOR team to rename/re-ip and setup application and database environments similar to their prod counter-parts.
• Primary member of the team for GRID project to successfully upgrade firmware, re-install OS and perform post for Confidential blades running SuSElinux 10/11.
• Developed Puppet modules to automate deployment, configuration, and lifecycle management of key clusters.
• Experience working in NFS/NAS, Storage Area Networks (SAN), SSA disk storage environment. Extensively performed SAN Migration.
• Worked with network team in identifying VLAN, switch ports related configuration, validations and shakeouts.
• Worked in production & application support 24/7 in NAS, EMC SAN Storage on Linux Environment.
• Implemented security policy and managed firewalls/IDS. Managed DNS, send mail, IP space, and co-location facility transition.
• Maintained Volumes and File systems for Oracle, MySQL, DB2, Sybase databases.
• Applying security patches to RHEL servers using Red Hat Satellite.
• Managing systems routine backup, scheduling jobs using cron, enabling system logging, network logging of servers for maintenance, performance tuning, and testing.
• Performed data-center operations including rack mounting and cabling.
• Tech and non-tech refresh of Linux servers which includes new hardware, OS upgrade, application installation, and testing.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager and Logical Volume Manager.
• File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation.
• Upgraded firmware on HP, DELL, and Confidential blade servers running Linux.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Extensive exposure to Configuration Management policies and practices with regards to SDLC; along with automation of scripting using BASH/Shell, Perl scripting.
• Worked on Zabbix for to integrity of servers, mechanism of flexible notifications for any virtual event and reporting.
• Installing and configuring Apache and supporting them on Linux production servers.
• Worked on SALT configuration management server to update configuration on Linux servers.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostatetc) and tuned I/O, memory, etc.
• Adding servers to the domain and monitoring them using Spectrum, Nagios, Check MK, and BMC.
• Documented various system admiration tasks to be used by team.

Environment: RHEL 5, 6, and 7, Solaris 9/10, /11, VCS, Oracle RAC, Redhat Cluster, MySQLVMWare vSphere, VMWare vCAC, Red Hat, Ubuntu, Satellite, Ansible, Ruby, Bash, Puppet, Dell PowerEdge R710, R720, R820, HP Proliant, Oracle T5220, 5420, T4-1, T5-1, V880, VVM, VCS, VNB, EMC Symmetrix and CLARiiON.

Linux Administrator

Confidential - Atlanta, GA

Responsibilities:

• Installed, configured, maintained and enhanced operating system and system support software/hardware Enterprise Linux 6.x, 5.x, 4.x, Ubuntu troubleshooting hardware, operating system, applications & network problems and performance issues.
• Installed and configured various flavors of Linux like Red hat, SuSE and Ubuntu.
• Monitored trouble ticket queue to attend user and system calls, participated in team meetings, change control meetings to update installation progress, and for upcoming changes.
• Diagnosing and resolving systems related tasks in accordance with priorities setup in dealing with trouble tickets.
• Network printer's setup and installation of client/server applications. Defined and setup network protocols, Network File Services (NFS), and Network Information Services (NIS) in Red Hat Linux and AIX systems
• Network trouble shooting using 'netstat', 'ifconfig', 'tcpdump', 'vmstat', 'iostat' and others.
• Built vservers using the templates as per the application's requirement
• Responsible for adding new DNS and mail entries in their respective servers.
• Day to day production support including checking daily logs, backup/recovery procedures, disaster recovery periodic maintenance and off-hours problem support.
• Monitored the whole Exalogic infrastructure.
• Created clones and Templates of Virtual Machines and Deploying Oracle VM's through Templates.
• Implemented and administered VMware ESX 3.5, 4.x for running the Windows 2003/2008 Servers on development and test servers.
• Installed and administered Redhat using KVM, Xen based hypervisor.
• Installing and configuring virtual environment using VCloud Director.
• Installing ESX servers and configuring them in a private cloud environment.
• Experienced in installing and managing NFS, FTP and Samba for file sharing.
• Installed and managed Tomcat and Apache Web based Server for Red Hat Production servers.
• Identifying, evaluating and recommending the purchase of software, hardware or services that can be used to improve the performance of this group.
• Supervised hardware installations and performed O/S upgrades.
• Experience in working in a huge environment with almost 700 servers including RS/6000.
• Day to day tasks in Red Hat Linux including upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system.
• Installation and administration of VERITAS Cluster Manager (VCM), VERITAS Volume Manager (VVM).
• Supporting and troubleshooting of Red hat systems 24/7.
• Performed system administration tasks like system monitoring, performance usage, network support, and user support.
• Created and scheduled cron tasks for file update, system back up or removal of unnecessary files.

Environment: REDHAT 6.x,5.x, Ubuntu, CentOS AIX 4.3/.5.2/5.3/6.1/7.1 , SMSAP, TSM, Nortel Switches, windows2000, HACMP Clusters, PowerHA, SAN, NIM, Confidential HTTP server, WAS 4.0/5.0, VERITAS, DB2.

Linux Administrator

Confidential - Fort Washington, PA

Responsibilities:

• Installation/Maintenance of Hardware/Software in Production, Development & Test Environment as an integral part of the Unix/Linux (RHEL 5.x / 6.2, SuSE/AIX) Support team.
• Worked on installation, configuration and maintenance of Red Hat, Cent OS, Ubuntu, SUSE, AIX and Windows servers.
• Installed and configured RedHat Satellite server for package transfer across servers, to store client's system profile and to control other servers in the network.
• Configured LVM and managed it.
• Experience with kick start installation on multiple servers.
• Worked with KVM Hypervisor to install, configure and maintain Red Hat Linux.
• Capacity Planning, Infrastructure design and ordering systems.
• Using VMware vCenter, created DataCenter Environment by creating VMware Clusters, adding ESX hosts in the clusters, and implemented HA and DRS.
• Created and scheduled Cron Jobs such as for Backup, System Monitoring and removed unnecessary files.
• Implemented day-to-day tasks in RedHat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Installed, configured, maintained and administered the network servers DNS, DHCP, NIS, NFS, SENDMAIL.
• Worked with DBA's to install RDBMS database, restore and generate logs.
• Supported physical servers and virtualized servers. Worked with other engineers to support SANs and Oracle VMWare hosts.
• Involved in adding new disks, formatting, partitioning, disk space allocation, monitoring system performance, system tuning, and crash recovery issues.
• Experience with installation and maintenance of NFS, FTP and Samba for file sharing.
• Built Linux servers using VMWare ESX and VMWare ESXi.
• Created Virtual disks/Virtual Target devices to allocate SAN Luns virtually to the VIO clients.
• Set up repositories for Redhat, implemented YUM, SSH and other security tools.
• Implemented RAID techniques and created disk groups and volumes using VERITAS Volume manager.
• Maintained Load balancing, High availability, Failover functionality and Disaster recovery included
• Provided 24/7 on call supports in debugging and fixing issues related to Redhat and SuSE Linux.

Environment: Linux (RHEL 4.x &5.x), AIX 6.1, Oracle 11/10g, SUN Servers, SUN Fires, Samba, Perl, Shell Scripting, Bash, SUSE 11/10, VERITAS Volume Manager (VVM), F5 Load balancers, SiteMinder5.5/4.5, EMC Storage SAN, VERITAS Cluster Server (VCS).

Confidential

System Administrator

Responsibilities:

• Primary responsibility includes building and supporting Solaris/Redhat Linux 3,4 servers.
• Installation and configuring of SUN Solaris and Linux servers.
• Involved in Building and configuring Solaris 8/9/10 using Jump start server and Red Hat Linux Servers using KickStart server as required for the project. Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Experience in Installing and Configuring Puppet, MySQL, Tomcat on RHEL
• Extensive use of VERITAS Volume Manager for Disk management, file system management on Sun Solaris environment.
• Setup and Configuration of Puppet Configuration Management.
• Implemented Puppet modules to automate configuration of Upgrading the linux kernel and Managing persistent SSH tunnels
• Implemented day-to-day tasks in RHEL and CentOS that includes upgrading kernel, configuring, multi-pathing, NAS Mount and Unmounts.
• Developed Puppet modules to automate deployment, configuration, and lifecycle management of key clusters.
• Created Zetabyte file system (ZFS) in Solaris 10. Created zpools. Exported ZFS from local zones to local zones.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Regular disk management like adding / replacing hot swappable drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Planned, scheduled and Implemented OS patches on both Solaris & Linux boxes as a part of proactive maintenance.
• Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and Weblogic application server.
• Implemented SUDO, SSH and other security tools and implemented SOX (Sarbanes Oxley) security compliance.
• Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, HW and SW RAID, multipath, file systems, network using the tools NAGIOS and BMC Tools.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, BEA Web logic etc.
• Extensive use of VERITAS Volume Manager for Disk management, file system management on Sun Solaris environment.
• Created Zetabyte file system (ZFS) in Solaris 10. Created zpools. Exported ZFS from local zones to local zones.
• Installation and configuration VERITAS NetBackup on Sun Severs and performing Backup using VERITAS Net Backup.

Environment: Solaris 8/9/10, Red Hat Linux 4/5/6, BMC Tools, NAGIOS, VERITAS NetBackup, Korn Shell, Bash Scripting,Puppet, MySQL,VERITAS Volume Manager,web servers, LDAP directory, Active Directory, BEA Web logic servers, Json,SANSwitches,Apache, Tomcat WebSphere, Weblogic application server.

Confidential

Linux Administrator

Responsibilities:

• Installation, administration, configuration of RHEL 5/6 including package management, patch management, regular system administration tasks.
• Developed and supported the Red Hat Enterprise Linux based infrastructure in the cloud environment.
• Installed Redhat Linux on bare metal servers and virtual machines using kick start and hardening the servers.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Security, Backup, Disaster Recovery, Performance monitoring and Fine-tuning of UNIX systems on different OS levels.
• Running jobs and applying patches using HP Server Automation Tool (HPSA)
• Participated in migrating environment from 4.x to latest 5.x version.
• Creating logical volumes, extending the file systems using both LVM and VxVM 4.1.
• Perform daily maintenance routines on Linux servers, monitoring system access, managing file space and tuning the system for optimum performance.
• Respond to all UNIX systems problems 24x7 as a part of on call rotation and resolving them on a timely basis.
• Set up user and group login ID, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Worked with design and features of the system architecture.
• Worked and performed data-center operations including rack mounting, cabling.
• Worked on various applications and improving their performance by performance tuning and analysis.
• Expertise in Querying RDBMS such as Oracle and MYSQL by using SQL for Data integrity.
• Responsible for change management, troubleshooting and resolution of server issues for end users support.
• Installing and configuring Apache and supporting them on Linux production servers.
• Writing shell scripts for Automated Back- ups and Cron Jobs.
• Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
• Worked with CFEngine for handling hosts in clouds.
• Tuning kernel parameters for optimum performance.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostatetc) and tuned I/O, memory, etc.
• Assist System Administrators with various support issues.
• Administration, package installation, configuration of OEL 5.4and preparing the servers for Oracle RAC installation and adding nodes to the cluster.
• Updated DNS configuration based on the new servers that are rolled out.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.

Environment: VERITAS NetBackup, VERITAS Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming, SQL, ActiveDirectory, Json, Nunit, BEA Web logic servers.