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.
• Responsible for setting up Anaconda kickstart configurator for Linux servers.
• Extensively worked on customizing Anaconda to update different kernel/boot parameters.
• Implemented liveimg feature of Anaconda kickstart in RHEL7.
• Anaconda installations on non - local (fiber-channel, iSCSI, NAS) devices in RHEL kickstart.
• Provided 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 & 11.
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, and performance tuning on UNIX/Linux systems.
• Experience with working on Cisco UCS servers and blade infrastructure setup
• Strong knowledge in OS installations, migrations, upgrades on both physical and virtual.
• 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, spacewalk and VMware.
• Experience in Creation and managing user accounts, security, rights, disk space, quotas and process monitoring in REDHAT LINUX
• 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.
• Experience in Openstack cloud computing, virtualization, Linux systems administration and configuration management.
• Configured OpenLDAP user authentication and enabled PAM authentication.
• Responsible for setting up Kerberos authentication for CIFS for Windows-Linux integration
• Extensively worked on setting up Samba on RHEL with Windows clients.
• Was working on integrating Puppet with new REDHAT satellite server.
• 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 .
• Experience with Ansible Development and Ansible Tower platform.
• 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.
• Responsible for provisioning and patching large number of Linux physical and virtual servers using Redhat Satellite server.
• Extensively worked in setting up Pluggable Authentication Modules (PAM) authentication for LDAP on RHEL servers.
• 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,IBM-AIX 5/6, Windows 2000 and NT.

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. Autosys

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

Network Protocols: DHCP, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS,PAM,Kerberos, 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:

Confidential, MD

Unix/Linux Administrator

Responsibilities:

• Responsible for managing Red Hat enterprise Linux (RHEL), UNIX (Solaris 10/11) servers hosting application and databases
• Responsible for providing off- hours production support for Linux/Solaris production systems.
• Set up user and group login IDs, network configuration, password, resolving permission issues
• Responsible for patching Linux servers, VMware Esxi host 6.5 and Solaris security patches
• Worked on Package Management, user account creation, filesystem setup for both application and database users.
• Coordinated with Oracle DBA in the project to troubleshoot, performance tuning and optimizing database applications
• Troubleshoot and performance tuning of large number of customers facing web and backend oracle database servers
• Creation and deletion of Autosys jobs as per requests. job Scheduling and Monitoring of AutoSys jobs on daily basis
• Set-up few scripts UNIX/ Windows which indicate Autosys health and agent machines status and send mail automatically in case of any issues.
• Successfully planned and executed disaster recovery exercises within targeted timelines by coordinating with network and AWS teams.
• Extensive coordination with application and database team for deploying mission critical applications for end customers
• Responsible for setting up ASM disk groups and configure raw devices for database configuration
• Involved in the scalar i500 tape drive upgrade and configuring the Solaris operating system kernel for the tapes to be discovered by NetBackup software
• Trouble shooting Backup and Restore related problems and Server Monitoring
• Involved in datacenter activities like rack and stack, cabling and to manage tape level backups
• Day to day operational administration tasks to ensure backups are occurring and failures are being identified and addressed
• Manage Backup solutions for physical and virtual machines running UNIX/Linux
• Responsible for installation, configuring Nagios xi monitoring host on Linux server and deploying the Nagios agents on all the Linux, Solaris and windows servers
• Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, multipath, file system network using the tool NAGIOS
• Working closely with Vendors on Hardware Problems, software fixes
• Involved in the datacenter power outage plan in powering down and powering up all the infrastructure including SAN, brocade switches, tape library, servers.

Environment: Solaris 10/11, RHEL 7, Oracle Linux 7.5, Sun V240, T5120, SPARC T5-2, PowerEdge R830, R730, HP Blade C7000, VMware Esxi 6.5, vSphere client 5.5, Brocade 5300, Dell EMC VNX 5600, Scalar i500 Tape library, veritas NetBackup 8.1, Nagios,Autosys, WebLogic, oracle 11g/12c

Confidential, Richardson, TX

UNIX/Linux Administrator

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.
• Responsible for design and configuring Anaconda kickstart configurator for Linux servers.
• Extensively worked on customizing Anaconda to update different kernel/boot parameters.
• Implemented liveimg feature of Anaconda kickstart in RHEL7.
• Anaconda installations on non-local (fiber-channel, iSCSI, NAS) devices in RHEL kickstart.
• 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.
• Experience in handling software development for various Teradata development projects and AWS cloud based projects.
• 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 IBM blades running SuSE linux 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.
• Worked on setting up ODA for database team.
• 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 IBM 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.
• Responsible for setting up Exadata and Exalogic systems.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) 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.

Confidential, Austin, TX

Unix/Linux Administrator

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
• Responsible for design and configuring Anaconda kickstart configurator for Linux servers..
• 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
• 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, IBM HTTP server, WAS 4.0/5.0, VERITAS, DB2,.

Confidential, Illinois

Linux/Unix Administrator

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
• 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, Tempe, AZ

LINUX/UNIX 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,SAN Switches,Apache, Tomcat WebSphere, Weblogic application server.