OBJECTIVE:

To secure a challenging position where I can effectively contribute my skills as a software professional, possessing competent technical skills and serve the organization whenever needed and reach higher positions.

PROFESSIONAL SUMMARY:

• Around 7 years of professional experience as Linux / Unix System Administrator incorporating administration, implementation and application - product support under environment of Red Hat Enterprise Linux 5.X/6.x/7.x, Sun Solaris (9/10), Windows server 2008,2012 R2, 2016, IBM AIX 5.1/5.3/6.1/7.2 and AWS cloud(VPC).
• Expertise in installation and configuration of Red Hat Enterprise Linux environment including RHEL and OEL (Oracle Enterprise Linux) 6/7, IBM AIX, windows servers and Suse Linux 9/10.
• Strong knowledge in configuring Kickstart and Jumpstart servers to initiate installation of Red Hat Linux and Solaris on several machines at once.
• Performance Monitoring, resolving network issues & Tuning the system using tools such as - top, iostat, vmstat, netstat, nfsstat, truss, sar, ndd, ethtool, Dtrace, Strace.
• Strong Administration skills in creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring also change, and delete user accounts per request.
• Expertise in Logical Volume Management on Linux with LVM Knowledgeable in HTTP, SMTP, FTP, SFTP, DHCP, SNMP TCP/IP, UDP, ICMP, VPN, POP3 protocols.
• Proficient in supporting environments by running Web Servers (Apache & IIS), Application Servers (WebSphere, Jboss) on LINUX, UNIX and Windows systems.
• Strong knowledge with working on networking protocols DNS, NIS, NFS, FTP, Samba Server, LDAP, remote access, security management, and system trouble shooting skills.
• Proficient in developing new Windows 2012 file servers which can be used by both Windows and Mac clients.
• Strong experience working with SAN, NAS and storage administration, with EMC Clarion & DMX storage. Configured Sun Multi-Packs, Storage Arrays, T3's and SAN backup for disaster recovery.
• Strong knowledge in working on different blades and clusters in Vcenter, Installed Red Hat clusters for database servers. Worked closely with Storage and Networking teams to manage the allocated EMC SAN, Fiber and Networking Infrastructure.
• Strong Knowledge in working with IBM fast dsx series, NetApp filers FASx and know the basic management functions such as configuring Storage Array from scratch, carving a LVM Group, RAID Level, creating a Disk and presenting to Hosts.
• Proficient in installing, configuring and volume/ disk management by using Veritas Volume. Manager (VxVM), Solaris Volume Manager (SVM) in Solaris and Logical Volume Manager (LVM) in Linux.
• Strong knowledge in working with virtualization technologies like VMware in building and configuring Linux, Solaris servers as required for the project.
• Possess good knowledge in Setup and configuration of several MS SQL 2012 Failover cluster servers running windows 2012 and multiple iSCSI drives.
• Highly experienced working with Version Control Configuration Management Tools like IBM Rational Clear case, SVN, GIT.
• Comfortable working in a Data center environment and work on CLI while performing tasks like- swapping disks, Attaching/Detaching storage, increasing Utilization.
• Highly experienced with monitoring tools like Nagios, splunk and snmp monitoring.
• Great efficiency in installing, configuring and implementing the RAID Technologies using various tools like VxVM and SVM.
• Strong knowledge and highly experienced in writing Shell scripts, Power shell, Python, Perl to automate routine tasks like checking log files, Selective file removal, disk space utilization, Process management and file backups.
• Expertise in batch scheduling, batch scripting, nightly backups, monitoring and network troubleshooting.
• Knowledge in setting up the environment with Tomcat/Apache, configuring the setup with F5 virtual load balancer for customer application.
• Strongly experienced working with Puppet for automating the deployment of post install configurations of the servers in various environments.
• Proficient in Configuration management tools like Ansible and Puppet for Deployment on Multiple platforms along with knowledge in Chef.
• Confident with creating Recipes and Cookbooks to maintain chef servers, its roles and cloud resources.
• Good knowledge in developing and maintaining infrastructure using Chef, Jenkins, and multiple AWS tools like OpsWorks and Code Deploy.
• Expert in installing configuring and maintaining apache/tomcat, samba and send mail. Strong knowledge in deploying the code onto web application servers like Web Sphere/Web Logic/ JBOSS/ Apache Tomcat.
• Experience in diagnosing and resolving modem and TCP/IP connection problems. Packet analyzing using snoop, TCP dump and Wireshark.
• Good knowledge in implementing Switch port security using Telnet, SSH, and PING.
• Strong knowledge in Network setup and support of TCP/UDP and other application layer protocols like SMTP, DNS, LDAP, NIS, NIS+, NFS, DHCP etc.
• Knowledge in setting up SSH, SCP, SFTP connectivity between UNIX/ LINUX hosts.
• Possess strong knowledge in Configuration and installation of Cisco Routers and Switches.
• Good knowledge and understanding of MPLS VPN for both IPV4 and IPV6 and configuration of both VPNV4 and VPNV6 VRF instances.
• Troubleshooting and packet capture with Net scout probes, Sniffer Pro, and TCP dump. Use of network monitoring tools including Cisco Works and Wire shark/Ethereal.
• Knowledge in designing, installing, configuring and maintenance of Enterprise Networks using Cisco routers, Catalyst Switches and Load Balancers, Cisco Firewalls.
• Confident with Configuring High Availability (HA) and Distributed Resource Scheduler (DRS) and Creation of templates.
• Strong knowledge with building infrastructure using AWS for virtual private cloud (VPC).
• Possess strong work experience in creating AMI’s, importing volumes, launching EC2 instances, launching RDS, creating security groups, creating auto-scaling groups, writing boot strap scripts, configuring load balancers (ELBs) in the defined virtual private connection
• Strong knowledge and experience in deployment and management through AWS cloud formation on EC2 instances and maintaining Amazon S3 storage and data archival in Glacier.
• Good knowledge in automating, build and monitoring tasks across AWS and Rackspace using a variety of tools such as Mongo DB, NginX, Jenkins, and JIRA.
• Able to Work in structured change management processes for highly available enterprise systems.
• Well organized with strong problem-solving skills, excellent communication and an ability to work on team or independently.

TECHNICAL SKILLS:

Operating Systems: RHEL 5/6/7, OEL5.5and6 Microsoft Windows 2000/NT/XP/Vista, Ubuntu, Fedora. Windows 98 NT 4.0. Cre1/2, Suse 9/10, CentOS 5, Sun Solaris 8/9/10, Hp-UX 5, IBM/AIX 5.3

Server hardware: IBM p-Series P690, P570, RS6000, Sun Fire HP Proliant G2, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, T-Series M-Series, IBM/HP/DELL Blade Server r710.

Web Servers: Apache/TOMCAT Web Server Administration

Security: TCP/IP Wrapper

Storage Hardware: Symmetrix DMX / DMX-2 / DMX-3 &EMC Clarion FC and CX Series, FC JBOD, Brocade FC Switches, SAN /NASNet App Filers, Logic and Emulex FC HBAs, Brocade silk worm 3200, iSCSI/ FC Storage arrays, RAID Storage arrays, DLT and LTO Tape Libraries, Hitachi enterprise systems.

Routing Protocols: RIP, IGRP, BGP, ISIS, OSPF, MPLS, and EIGRP.

Protocols: TCP/IP, HTTP, SSL, SNMP, SMTP, FTP, SSH.

Storage Devices: SAN &NAS, Symantic.

Backup Tools: Tivoli Storage Management (TSM), Avamar.

Databases: Oracle DB2, SQL Server.

Monitoring tools: Zabbix, Nagios, Splunk, and ELK.

Cluster Solutions: HACMP Red hat Cluster Suite, Sun Cluster 3.0, 3.1, Service Guard

Scripting language: Ksh, Perl, Bourne shell.

Networking Services: NIS, NFS, AutoFS, DNS, SSH and Send mail.

PROFESSIONAL EXPERIENCE:

Confidential, Scottsdale, AZ

Linux System Administrator

Responsibilities:

• Monitoring systems and administration servers for day-to-day problems, user administration, patching, monitoring log files, hardware failures, software up gradation, backup, configuration changes and documentation.
• Installation/configuration of Red Hat 5/6/7 using Kickstart Server and Solaris 10 using Jumpstart.
• Performing Post Build activities like Setting up Backup interface/ NIC bonding/ Loading additional Packages/ joining the server to Active Directory, etc.
• Deployed Puppet, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure. Creating manifests and classes in Puppet for automation.
• Maintained and developed infrastructure using Chef, Jenkins, and multiple AWS tools like OpsWorks and CodeDeploy.
• Developing utilities in Perl, including templates and configurations for Nagios, MRTG, and basic system configurations.
• Worked with EMC SAN to acquire storage and setting up Veritas/LVM file-systems.
• Monitored the servers using tools like Nagios and providing 24x7 support on call rotation basis.
• Responsible for redesigning of network configuration and specify deploy and configure hardware to reduce latency, increase bandwidth, improve reliability, simplify administration, eliminate many existing problems, enhance security, and facilitate deployment automation.
• Create Chef Recipes, automation tools and Builds, and do an overall process improvement to manual processes.
• Experience with provisioning Linux using Kickstart and Red Hat Satellite server.
• Responsible for setting up and managing Kickstart and Jumpstart environments.
• Automated deployment activities with Shell scripts and Chef Recipes.
• Automation development using python to assist with server deployment.
• Deployed a Jenkins environment for continuous integration/builds.
• Automate network configuration management for all cloud environments.
• Provided support to conduct system testing and integrated more servers to the infrastructure.
• Deployment and management through AWS cloud formation on EC2 instances and maintaining Amazon S3 storage.
• Responsible for automating build and monitoring tasks across AWS and Rackspace using a variety of tools such as Mongo DB, NginX, Jenkins, and JIRA.
• Managed Puppet infrastructure through major version upgrades.
• Installed/Configured the Websphere server, JBoss application server, Web logic server, Managed tuning and performance of high profile applications running on them.
• Worked with Enterprise Security Manager to get Security certification for servers before moving them in to production.
• Worked on Datacenter Moves where servers were moved from one datacenter to another.
• Working very closely with vendors (IBM/HP/Sun/EMC) in resolving any hardware/ Storage and Network issues.
• Provided technical support and expertise in the design, development and process of software development tools based on the systems environment.
• Monitor data collection using framework and python applications. Monitoring the system performance and doing the kernel tuning to enhance the system performance.
• Developed Cron jobs and Shell Scripts (Perl, Python) for automating administration tasks like file system management, process management, Server reboots etc.
• Troubleshooting Production Server Problems related to web applications, Send mail, disk space, and file system, DNS and network connectivity.

Confidential, Irving, TX

Linux System Administrator

Responsibilities:

• Administration of 2000 + RHEL 5.x, 6.2, 6.3 and 6.4 servers which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Management and monitoring of numerous services using Service Management Facility and Service Administration.
• Installing RedHat Linux using Kickstart and applying security polices for hardening the server based on the company policies.
• Installed and configured SAMBA server for windows and Linux connectivity.
• Installed and Configured Sun availability Suite 3.5 to implement Point-in-time snap shots and remote mirroring.
• Designed an Architectural Diagram for different applications before migrating into Amazon cloud for flexible, cost-effective, reliable, scalable, high-performance and secured.
• Build servers using AWS: Importing volumes, launching EC2, RDS, creating security groups, auto-scaling, load balancers (ELBs) in the defined virtual private connection.
• AWS Import/Export accelerates moving large amounts of data into and out of AWS using portable storage devices.
• Automating backups by shell for Linux to transfer data in S3 bucket in VPC.
• Creating alarms in Cloud watch service for monitoring the server’s performance, CPU Utilization, disk usage etc.
• Maintaining the user accounts (IAM), RDS, Route 53, SES and SNS services in AWS cloud. for transport.
• Implementation and administration of VMware ESXi 4.x, 5.x, VCenter for running Redhat Linux, windows Servers on Production and Development.
• Working with Apache, HTTP, NginX Server including proxy and caching configurations. configuration & troubleshooting of applications including NginX, Kafka, HAproxy, etc
• Deployed Java application servers such as Tomcat or Web Sphere Application Server Community Edition.
• Working in Agile Project Management environment to deliver high priority, high-quality work.
• Extensive knowledge of Agile and Scrum background, JIRA Usage, Iteration Management and Metrics Usage.
• Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center.
• SWAP box configuration, Implementation of disaster backup and recovery. Performance Management & Tuning of RHEL.
• Veritas File system and Veritas Volume Manager 2.5 are used to configure the RAID 1 and RAID 5 Storage Systems.
• Responsible for performing DB profiling and optimization; analyze and propose schema changes to PostgreSQL databases as needed.
• Implemented and configured Backup policies and Storage Units.
• Managing disk storage with Veritas Volume Manager 3.5/4.1 and Solaris Volume Manager with Veritas File System (VxFS).

Confidential, Rancho Santa Margarita, CA

Linux Systems Administrator

Responsibilities:

• Unix User (individual & Application) accounts, Groups creation setting passwords, home directories and assigning permissions to them with Manager and resource owner approvals
• Responsible for daily tasks such as user setup, group setup, install and upgrading new machines on Solaris, RHEL. Patch Management, Package management, RPM, User administration.
• Installing and configuration of operating systems like Red Hat Enterprise Linux 5/6, CentOS 6/7 and Ubuntu 14. Supporting instances running Ubuntu, Centos and Red Hat Linux.
• Installing Blade Logic agent and registering servers to Blade Logic server and run the Blade Logic jobs for patching, compliance, audit and remediation.
• Configuration, implementation and administration of VERITAS Cluster Server (VCS), Red Hat Cluster Server (RHCS), and Sun Cluster Server for High Availability.
• Maintained Load balancing, High availability, Failover functionality, and Disaster recovery included changing IP address of the web and app server machines, which caused change in the virtual host and http transport configurations.
• Maintained shared NFS files system, mounting and unmounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
• Monitoring Disk Activity Checking for free space Removing Temporary Core files
• Providing the notes /reports and documentation of the repetitive work done in incident management, change management and written/build standard operating procedures for GMS operations.
• Worked on building new SUSE & Red Hat Linux servers, supported lease replacements and implementing system patches using the HP Server Automation tool.
• Worked with VMware Virtualization using ESX hypervisor of VSphere 6.x.
• Worked with legato networker tool to backup/retrieve the logs and transfer to FTP server at the request of the development to further investigate the incident.
• Worked on data center migration projects and was involved from planning to implementation, worked closely with the application team with applying upgrades and coordinated the deployment with the datacenter support, network engineering and with external vendor support.
• Followed ITIL Processes for Incident management, Change management and problem management.
• Performed SVN to GIT/BitBucket migration and managed branching strategies using GIT flow workflow. Managed User access control, Triggers, workflows, hooks, security and repository control in Bitbucket.
• Created, Configured and Administered Jenkins servers with Master-slave configurations as needed.
• Worked on Managing the Private Cloud Environment using Chef.
• Automation of infrastructure by creating chef recipes and cook books.
• Developed Chef Cookbooks to install and configure Apache Tomcat, Jenkins, and Run deck and deployment automation.
• Writing Shell/Perl Scripts for deployment tasks like Installation, Configuration of Core and Layered Products and Peer-review tasks (employed to maintain the standard of quality of servers) for all the New Build Servers.
• Involved in integrating the GIT into the Puppet to ensure the integrity of applications by creating Production, Development, Test, and Release Branches.
• Worked with GitHub and Atlassian Stash for Version controlling, collaboration and code review of development/stable/production code for different environments using branching and merging techniques.
• Provided system support for 2000+ Linux/Unix Servers including routine maintenance, patching, and system backups and restores, and software and hardware upgrades.

Confidential

Analyst/Jr. Linux Admin

Responsibilities:

• Administered centralized and distributed servers with responsibility for the operating system, network interface, file system and application software. Duties included software and hardware installation, maintenance and upgrades.
• Create, deploy and manage Linux and Windows VM using Red Hat Enterprise Virtualization Manager, which includes moving and migrating VM from one cluster to another cluster or within the same cluster, and Managing ESXi servers using vSphere client and VCenter for managing multiple ESXi servers.
• Involved in installation and configured the Middle Ware Application Servers.
• Implemented Chef to deploy the builds for Dev, QA and production.
• Provided Linux admin support to engineering team.
• Experience on physical servers migrates to virtualization using Branded Zones.
• Administration and configuring of DNS and DHCP on Linux and Solaris systems. Worked on IBM Power SC (Security & Compliance).
• Perform various duties in Windows 2003/2008/2012 , Active Directory 2003/2008, Exchange 2003/2007, and VMware vSphere.
• Perform various duties in Active Directory 2003/2008.
• Experience in Active Directory, DNS, DHCP, Group Policy, WSUS, FTP environment, Virtual Server Administration, and Patch Management on Microsoft Windows Servers.
• Network planning, design and implementation of Windows Server environment.
• Provided a security and compliance solution optimized for virtualized environments on Power Systems using IBM Power SC.
• Work with other groups to help establish the standards of system architecture, data communications, and system security.
• Engineered solutions to complex problems spanning multiple systems.
• Responsible for the backup of data, including automatic backup routines, testing data integrity, and offsite storage of media.
• Managing Servers (Including File Servers, Print Servers, Mail Servers and ERP Servers).
• Resolve technical problems as they happen take ownership of problems & work them to resolution using both internal resources & third-party technical support partners (IBM & HP).

Confidential

Jr. Linux Admin

Responsibilities:

• Day to Day administration tasks include - adding and removing users, file, share permissions, trust management, replication management, server backups and server setups on AIX, LINUX (RHEL, SUSE, Ubuntu). Server health monitoring and system tuning as per vendor recommendations.
• Responsible for creating Disk Partitions, Logical Volume Manager (LVM) and RAID Technologies on different File Systems like Ext2, Ext3, Ext4, XFS on various Linux Distributions and involved in creating Veritas volume manager on Solaris.
• Monitored system logs and activity on servers. Administered, verified, and restore from backups. Replaced defective hardware on clients and servers as necessary.
• Installation, configuration, and maintenance of web servers, application servers, and database servers on Linux Servers. Installed, configured and set security policies on cisco and checkpoint firewalls, VPN.
• Scheduled various regular, periodic, future and queue tasks by using crontab.
• Processes administration and management like monitoring, start/stop/kill various processes/sub processes.
• Design and implement a DNS/DHCP solution to replace current aging system. Solution required 99.9% uptime via Linux clustering. Transferring files between host and client using FTP.
• Expanded file system using Logical Volume Manager.
• Performed Disk Mirrors and RAID 0, 1 and 5 levels on several Linux servers.
• Installation of patches, packages on Red Hat Linux Servers.
• Diagnose and correct problems with network services and any other hardware issues in Linux servers.
• Provide desktop and Level-1 support for all office workstations.