EXECUTIVE SUMMARY:

• Having 5 +years of IT experience in Linux System Administration under heterogensseous environment of Redhat at Linux 5.x/6.x/7.x, CentOS6, SuSE Linux 10/11, SunSolaris 8/9, VMware4/5/6 and Windows 2003/2008/2012 R2.DevOps and in
• Amazon Web Services.
• Expertise in Installation, Configuration and file system management and Logical volume Manager (LVM) with multiple RAID (0,1,5,6) Levels
• Extensively worked on administering NFS, DNS, DHCP, and Mail Servers.
• Experience with file/disk encryption technology/products on servers, worked on File System Encryption.
• Extensive experience on patching up Unix/Linux servers & decommissioning unwanted old servers using virtualization techniques to make the client environment more reliable & profitable.
• Experiences in Server build using Kick - start, Jumpstart .
• Experience with Microsoft Server Operating Systems 2008 and 2012.
• Experience in RPM Package Administration for installing, upgrading and checking dependencies in RedHat.
• Experience in building servers using Kickstart for Linux, Jumpstart for Solaris.
• Strong experience in writing Bash and Perl scripts to automate business process.
• Experience in Performance Monitoring of Kernel parameters, Memory, Disks, Network.
• Developing Docker images to support Development and Testing Teams and their pipelines; distributed
• Worked on installing and configuring VMware/Esx Servers for virtualizations.
• Skilled at optimizing large complicated SQL statements.
• Analyzing and reporting upon JIRA usage and activity.
• Devise strategies for Disaster Recovery Management (DR), including planning and designing servers for back up, recovery and archival of server / database information.
• Work support to all Linux system problems 24x7 On-call Support and resolving them in timely basis and ensuring high availability.

KEY LINUX SKILLS:

Operating Systems: W i ndow s, Mac OS X, UN I X, L I N U X ( RH EL), REDHAT, Linux Mint, Fedora, AXI 5.2 & 6.1, Citrix 4.x,5.x, VMware ESX .

Cloud Computing: AWS (EC2, ELB, S3)

Networking Protocols: TCP/IP protocol stack, UDP, IPv4 IPv6.

Scheduling Tools: Autosys, Crontab, Cronjobs.

Monitoring tools: Splunk 6.0, Splunk 6.2.

Identity & Access Management (IAM): Centrify 5.1.1, Identity management, Centrify, Windows Active Directory, NIS,NIS+

Source Code Management: Gitlab,GitHub

Configuration Management tools: Jenkins, Chef, Puppet, Ansible, Docker.

Languages/Scripting: C, C ++, P er l sc ri p t i ng, Power Shel l sc ri p ti ng, SQL, J av a/ J2 EE, Python, Bash.

Project management Tool: JIRA, Remedy, HP Quality Center.

Web s er v er s: We b l og i c, WebSphe r e, A pache T om cat, J BO SS.

Database: O r a cl e 12 c, SQ L SER V ER, RAC M YSQ L, DB 2,Oracle.

Packages: Ms Office Products

Windows Server: Windows Server 2008R2 /2012R2

O t her s: MS O u tl o ok, Agile, SCRUM, Load Balancing.

PROFESSIONAL EXPERIENCE:

Confidential, Omaha, Nebraska

Linux/Middle ware Administrator

Responsibilities:

• Installing, Configuring and OS Upgrades of Server systems such as Red Hat enterprise servers (version 5, 6 & 7), CentOS, Microsoft Server 2008 & 2012 etc.
• Experience in using Puppet & Chef for OS configuration & automation.
• Installing and configuring services like DNS, DHCP, NFS, Send mail, Apache Web Server, NIS, Samba, SSH, Telnet, Yum, RPM package management.
• Worked with redhat Enterprise Linux 6 Security Technical Implementation Guide(STIG) to publish as a tool to improve the security of Department of Defense(DOD) information system.
• Worked on Version control systems like Subversion, GIT, CVS, ClearCase and Perforce. configure multi-factor authentication for login access to Centrify-managed Linux and UNIX computers and for privileged command execution in hierarchical zones, classic zones, and Auto Zone.
• Support Patching, Incident Management, Breakfix and Automation/Development tools.
• Research, evaluate and test new products and/or technologies.
• Experience with Nagios network monitoring software.
• Successfully migrated over 30 applications from Citrix Metaframe XP, 4.0, 4.5 into Xenapp 6.5 encompassing 4 distinct geographic locations over 60 servers
• Expertise in troubleshooting and resolving issues in enterprise Citrix environment, Including Web Interface, application enumeration and performance issues, Printing and provisioning issues, for internal and external clients.
• Maintained and managed Windows 2003\2008R2 servers in Citrix farm
• Maintained Centrify Identity Management and Active Directory integration. Mentored junior systems administrators. Developed and documented admin.
• Implemented user Active Directory authentication for non-Windows Operating Systems leveraging Centrify.
• Access Manager, you can use the Setup Wizard to prepare the Active Directory forest with organizational units and containers for Centrify objects.
• Installed and Configured RedHat Linux Kickstart using Cobbler and configured YUM repositories for different Minor Versions of Linux.
• Centrify Direct Manage is an integrated set of administration and management tools that centralize the discovery, management and user administration of UNIX and Linux systems through integration into Active Directory-based tools and processes.
• Cobbler builds on the Kickstart mechanism and offers installation profiles that can be applied to one or many machines break/fix usually works on a time-and-materials basis, in which the contractor charges an hourly rate plus the cost of parts, there are some exceptions.
• Provide IAM to centralized directory service with oversight as well as visibility into all aspects of the company user base.
• The file permission, ownership, and group membership of system files and commands must match the vendor values by using STIG.
• Work with VMware Infrastructure Client in supporting our Windows 2008 & 2012, Linux Enterprise 5 Server environment.
• Install UNIX/Linux Clients either locally at the client computer or remotely from your UNIX/Linux NetBackup server.
• A NetBackup UNIX or Linux server can only push client software to UNIX or Linux clients
• Propose, design, and implement enhancements and additions to current environment
• Creating and configuring the logical and physical Active Directory structures.
• Creating and configuring Active Directory sites and site-links.
• Develop solutions/tools for product upgrades and patching.
• Domain Controllers running Windows Server 2012 R2 block the creation of duplicate service principal names (SPNs) and user principal names (UPNs).
• Knowledge in AD architecture and infrastructure (LDAP, Directory Replication, group policy, security, schema changes, etc.)
• Executed daily production and development administration and changes in an end-to-end VMware virtualization stack with zero customer impact.
• CI/CD software can help teams advance new changes through a series of stages automatically to reduce the time to feedback and remove friction from the process.
• Set up a Continuous Intergration and Delivery pipeline
• Installation and monitoring Virtual environments with ESXi 4.0 5.0/5.5/6.0 Servers and Virtual Center
• Evaluated the functionality and usability of Symantec Endpoint Virtualization, Citrix XenApp .
• Day-to-day maintenance, user account creation, troubleshooting and administration of the NIPR and SIPR Remedy
• Provide guidance on best practices for server configuration, Patching and system management
• Working with IT automation and DevOps approaches using tools such as Puppet, Chef, etc.
• Working on different business times and supported 24x7 on call rotation to resolve application issues.
• Worked with Cisco Jabber deployments for all supported platforms and customizations, Cisco Jabber Guest solution implementation and support in an Expressway
• Performing Post Build activities like Setting up Backup interface/ NIC bonding/ Loading additional packages/ joining the server to Active Directory etc. supports RAID 0, 1, 5 , and 6 via its software implementation, named RAIDframe .
• Working as a team member, supporting to team and client.
• Develop and manage middleware performance tuning tools Regards.

Environment: Red Hat Linux (RHEL 5/6/7), Python,AWS, GIT, Citrix4.x,5.x TCP/IP, BMC Remedy, Cisco Jabber,Centrify5.1, Logical Volume Management (LVM),, Remedy 9.0,LDAP, Oracle 12c, AWS, VmwareESXi, windows server 2008 & 2012. Python,Red Hat Satellite Server, Oracle RAC, Veritas Cluster Server, NAS, Active Directory, NIS, Apache, is Installation and monitoring Virtual environments with ESXi 5.0/5.5/6.0 Servers and Virtual Center, VMware, RPM, LVM, Web sphere.

Confidential, Baltimore, Maryland

Linux /VMware Administrator

Responsibilities:

• Maintaining Redhat (RHEL) enterprise servers (version 6 and 7).
• Troubleshooting account lock outs, fixing low disk space and assisting with anything related to the operating system and server.
• Installed, configured and administered WebLogic Server 9.2/10.3 on Red hat Linux 5/6, and Sun Solaris 9/10 in various environment including dev, QA, Stage (UAT), and prod environments.
• Supported on call schedule for Production support 24x7 SLAs (service level agreement)
• Exceptional ability to work independently with a team of Python coders
• Assisted in designing and programming of object oriented databases with Python and other languages.
• Experience with VMware Virtualization using ESX hypervisor of Vsphere.
• Managing Laureate’s Red Hat Enterprise Linux Environment.
• 24x7 on-call support.
• Managed VDI assignments and user sessions using VMware Vsphere and Citrix XenCenter
• Upgrade, monitor and maintain remote access Citrix farm running on Presentation Server 4.5.
• Created application packages (.msi files) in Citrix for installation on multiple servers.
• Deployment of applications using Altiris, Citrix Packager, and Windows Installation Manager.
• Published all migrated applications on new Citrix Presentation Server 4 farm.
• Maintaining documentation for Citrix and application installs.
• Daily tasks included working with Citrix end users and working with application teams to install, improve or deploy updates to their applications installed in Citrix.
• Managing Citrix Server with Load Balancing, Resources Manager Server, Web Interface Server and Secure Gateway.
• Work concentrated on the TCP/IP stack and PPP protocol for establishing a data connection with the network.
• MIPS supports the development of Linux on MIPS through our in-house Linux kernel, toolchain and distribution teams, by support to the MIPS processor based open source community .
• The Linux kernel team at MIPS actively upstreams patches for released kernels, current cores and semiconductor devices cross-platform systems and enabling optional end-to-end encryption of data in motion.
• Set up and built AWS infrastructure with various services available by writing cloud formation
• Configured AWS CLI and performed necessary actions on the AWS services using shell scripting.
• Added an export file that lists the alert MIB name, OID, severity level, and alert MIB description for all TPAM alerts
• Added new global setting that controls the behavior of the account Past Password tab for TPAM Administrators, Partition Administrators, and PPM ISAs.
• Used Git with Stash for code repositorie
• Centrify provides unified identity management across data center, cloud and mobile, resulting in one single login for users and one unified identity infrastructure for IT.
• If logged in to TPAM with the same user name that was previously used for a deleted user, the first name and last name of the deleted user will intermittently display in the Activity log.
• Working closely with Web Administrators to setup an automated deployment for SharePoint applications using SVN and Git Tools .
• Responsible for Daily Backup maintenance and Patch & package management.
• Esx patching& VMware tools upgradation and Installing the Esx version in physical servers
• Server down & kernel panic issues and scanning the storage if required.
• Involving with backup team when backup fails between clients and master servers.
• Effectively working with patching like kernel patching.
• Migrating the VMs from old hardware to new hardware by using VMware replication.
• Server builds based on customer requirement and server decommissioning and adding new disk & creating the file system.
• Removing the instances which power off state by taking confirmation from server owner.
• Create and maintain documentation on Linux server builds, policies and procedures, ensuring they are accurate and current.

Environment: RHEL 6/7, RedHat Satellite Server, AXI 5.2 & 6.1, Python, Citrix4.x,5.x GIT, AWS, Vmware vSphere 6.0, Logical Volume, Centrify 5.1.1, Centrify, Management,NetApp(LVM), JBoss, Enterprise application Platform, HP Bladesystem, NoSQL,Oracle RAC,AWS, Python, Veritas Netbackup, Apache, LDAP.

Confidential, Dallas, Texas

Linux System Administrator

Responsibilities:

• Installation and configured RedHat Linux (6.x), Solaris8/9(X86).
• Performed Linux administration tasks such as installing, configuring, monitoring and performance tuning.
• Created AWS S3 buckets, performed folder management in each bucket, managed cloud trail logs and objects within each bucket
• Splunk configuration that involves different web application and batch, create Saved search and summary search.
• Performing Post Build activities like Setting up Backup interface/ NIC bonding/ Loading additional packages/ joining the server to Active Directory etc.
• Created Perl Script to Orchestration of Components and server node to monitor detailed about callerApp. Server performance testing on HP blade server Linux.Experienced in Performance Tuning and Query Optimization in AWS Redshift.
• M onitoring platforms monitor containers in addition to other hosting architectures and use Nagios to monitor your Linux environment .
• Provide post-sales phone and email support to Centrify Server Suite customers.
• Working on Perl modules, turning them in to RPM’s, so they can be deployed on new VM’s and Build automatic provisioning system with kickstart and Puppet.
• Majorily worked on the Centrify Creating new groups, users and service accounts in Centrify and User,Group and service Account Creation. integrated Centrify Server Suite of solutions helps you improve IT efficiency, strengthen regulatory compliance initiatives, and centrally secure your heterogeneous computing environment.
• Worked on Citrix XenApp and knowledge of Citrix Web Interface.
• Trouble connecting to LDAP server ensure below service are running.
• Configured LDAP clients on server test and troubleshoot for maintaining network and data security.
• Created automated shell script to check out code, build and deploy with Cron job.
• Developed automated scripts/system monitoring tools/ testing tools using Perl Scripting.
• Developed and implemented automated shell script for backup of database, application and data.
• Good experience in creating SQL server data objects like tables, Views, Procedures, functions and triggers.
• Experience in writing and tuning SQL and PL/SQL stored procedures.
• Linear RAID, the chunks are allocated sequentially from one member drive, going to the next drive only when the first is completely filled.
• Experience in developing distributed software systems using NOSQL technologies such as Cassandra
• Automated daily tasks through korn and Perl scripting. Examples include: reporting invalid login activity, mailing errors from error report, removing old print files.
• Involved in Data Migration from Remedy 6.3 to 7.1.
• Regularly Summarized and sent performance reports to management on Word and Excel formats as requested for security planning.

Environment: RHEL 5/6, RedHat Satellite Server, 10/11,AWS, Logical Volume Management (LVM), AWS, Citrix Centrify, VmwareESXi, HP Proliant DL380/DL580/BL 460c, Oracle RAC, Apache, LDAP.

Confidential

Jr. System Administrator

Responsibilities:

• Installation of RedHat Linux based servers with in development, test and production environments.
• Performed standard system administration tasks, such as patching, software and hardware upgrades, troubleshooting and problem resolution.
• Installing and configuring various services like DNS, DHCP, NFS, Send mail, Apache Web Server, NIS, SSH, Telnet, http, RPM Package Management.
• Develop Linux/UNIX shell scripts to accomplish redundant tasks to simplify in distributed administration.
• Setting up and maintaining Domain Names System (DNS) servers.
• Implementation of advanced partitioning schemes like Software RAID (0,1,5,6) and LVM.
• Creating users with root’s privileges and also users with limited root’s privileges called the sudo users.
• Experience in writing and tuning SQL and PL/SQL stored procedures
• Developed automated scripts/system monitoring tools/ testing tools using shell and Perl Scripting.
• Planned and performed the upgrades to Linux (RHEL 4&5, SuSE9, Centro’s) OS and hardware maintenance like changing memory modules, disk devices & SCSI devices.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Creation of users, mounting home folders and respond to general user queries regarding mounting issues. perform system monitoring, upgrades, performance tuning and backup and recovery
• Advance level of experience in researching OS Issues, applying Patches and opening the Vendor Tickets like Remedy.
• Performed day-to-day Linux administration such as user accounts, logon scripts, directory services, file system shares, and permissions etc.
• Setup NFS, Samba and FTP File sharing setup on Linux and Windows servers.
• Maintaining VMware ESX servers using VMware Virtual center
• Supporting web development and database teams for day to day operations

Environment: RHEL 5/6, RedHat Satellite Server, VmwareESXi, Logical Volume Manager, Sun & Veritas Cluster Server, Global File System, RedHat Cluster Servers.