SUMMARY

• 8+ years of experience on UNIX/Red Hat Linux and Experience in System Administration, System Builds, Server builds, Installs, Upgrades, Patches, Migration, Trouble Shooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine - tuning on Red Hat Linux Systems.
• Change/Configuration and Release Management. Actively hosted and participated in Change Control, Agile, Production readiness and application release meetings throughout the Application Lifecycle Management (ALM) process.
• Expertise in amazonAWScloud which includes services like: EC2, S3, VPC, ELB, IAM, Cloud Front, Cloud Watch, Security Groups.
• Experience in branching, tagging and maintaining the version across the environments working on Software Configuration Management (SCM) tools like Subversion (SVN) and GIT.
• Experience in cloud stack such asAWS(cloud formation) and VMware stack.
• Ability to build deployment, build scripts and automated solutions using scripting languages such as Shell scripting, Python, Ruby, PHP, PERL.
• Extensively worked on Jenkins by installing, configuring and maintaining for Continuous Integration (CI) and for End-to-End automation for all build and deployments.
• Extensive experience with software Build automation and standardization tools like ANT, Maven.
• Understanding of networking concepts, configuration of networks, Router Configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port and Wireless Networks.
• Configuring HP virtual connect, Server profiles and performing maintenance version upgrades.
• Good at Configuring RAID Groups, Hot spare drives, & Global Hot spares.
• Expert knowledge on configuring hardware iSCSi SAN, FC SAN, NFS and NAS storage to VMware ESXi hosts from vSphere client.
• Expertise in converting P2V and V2V migrations using VMware Converter and PlateSpin in a large environment.
• Experience with HP servers, CISCO UCS servers and Dell PowerEdge Servers and Strong Implementation knowledge on configuring and managing HP c7000, Cisco UCS 5108 chassis.
• Experience in all forms of backup and recovery modules in windows server and VMware environments.
• Experience with managing Active Directory accounts with users and groups.
• Extensively worked With VMware ESXi 5.1/5.5/6.0, vCenter Server, Host Clustering with HA, DRS, Replication Manager 5.x/6.0, Site Recovery Manager, vMotion, Physical to Virtual Migration and Managing SAN Datastores with, iSCSI, NFS & FC.
• Experience working with Puppet Enterprise and Puppet Open Source. Installed, configured, upgraded and managed Puppet Master, Agents & Databases. Integration of Puppet with Apache and Passenger.
• Installed and managed Middleware tools through Puppet such as WebSphere Application Server 7.x/8.x, JBOSS GA7/EAP6, IBM IHS, Apache & Tomcat.
• Worked with standards, policies and procedures for all aspects of UNIX server environment (e.g., configuration, administration, documentation, etc.). Experience in Server build using Jumpstart, flash archive, NIM, Ignite and kickstart.
• Proficient DB administration (Oracle, DB2, Sybase and SQL) knowledge for maintaining, pruning, and performing required DB tasks.
• Experience in working on source controller tools like Subversion (SVN), GIT, GITHUB, CVS, IBM Clear case and Perforce.
• Experience in working on source control tools like Day-to-day job included but not limited to handling Tickets, Monitoring, Troubleshooting and maintenance.
• Extensive experience using MAVEN and ANT as build tools for the building of deployable artifacts (jar, war & ear) from source code.
• Managed all the bugs and changes into a production environment using the Jira tracking tool.
• Managed the Windows infrastructure, Active Directory, Exchange, WINS, DHCP, DNS, NAT and IP Routing.
• Involved in setting up JIRA as defect tracking system and configured various workflows, customizations and plugins for the JIRA bug/issue tracker.
• Experience NIC Bonding/NIC Teaming configuration in Linux/UNIX/Windows/VMware systems to increase the bandwidth or redundancy based on requirement by the application.
• Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services and protocols like NIS, NIS+, OSPF, LDAP, DNS, NFS, DHCP, NAS, FTP, SSH and SAMBA.
• Extensively involved in configuring & administering Net Backup clients, SAN Devices, EMC Storage.
• Experience in updating O/S maintenance and modification levels by applying software patches and fixes (APAR’s and PTF’s) that are downloaded from IBM.
• Experience in Incident & defect Analysis, Penetration testing, vulnerabilities analysis, Fail Over analysis, Risk management.
• Proficient in System Backup and Recovery from tapes using Ufsdump, Ufsrestore, tar and cipro.
• Well versed in configuring Volume Groups and Logical Volumes, extended logical volumes for the system growth needs using Logical Volume Manager (LVM). Managing FTP, Tomcat & Apache web servers on Linux servers.
• Expertise in implementation and maintenance of Apache Https, SMTP, DHCP, NFS, NIS, NIS+, LDAP, DNS, SAMBA, SQUID, Postfix, Send mail, FTP, Remote Access, Security Management & Security trouble shooting skills.
• Experienced with the installation, configuration of volume management using VERITAS Volume Manager 5.1/6.0 and Solstice Disk Suite on Solaris and experienced in RAID configurations.
• Experience in Backup Tools like NetBackup, Veeam Backup and Replication Suite.
• Installed, Configured, Managed Monitoring Tools such as Splunk, Nagios, iCinga for Resource Monitoring/Network Monitoring/Log Trace Monitoring.
• Installation, Configuration and Management of RDBMS and NoSql tools such as SQL Server 2008/2012/2014 , MySQL, DB2, PostgreSQL, MongoDB & Cassandra.
• Day to day administration of the Development environment and Production and Test environment systems.

TECHNICAL SKILLS

Operating Systems: Windows, UNIX, LINUX (RHEL 5/6/7, Ubuntu 12.04/16.04/18.04 , OEL 5/6/7).

SDLC: Agile, Scrum, Waterfall

Backup and Recovery tools: Dump, Restore, Tar, CPIO, Resync, Kernel re-compilation & Patches, updates.

Virtualization: VMware ESX 5.0/5.5/6.0, VMware ESXi 5.0/5.5/6.0 VMware vCenter, vSphere Client, VMware VDI, VMware Thin App

RDBMS: Oracle, MY-SQL, PostgreSQL, Mango DB and MS SQL Server

Web servers: Web logic, Web Sphere, Apache Tomcat, JBOSS

Scripting: Bash Scripting, Python and Ruby.

DevOps Tools: Puppet, Ansible, Chef, Gitlab & Gitlab Runners, GitHub, Jenkins, Docker and Kubernetes.

Networking/ Protocols: DNS, Telnet, LDAP, TCP/IP, FTP, HTTP, HTTPS, SSH, SSL, DHCP

Cloud Technologies: Amazon Web Services (AWS), Open stack, Azure Cloud

Monitoring Tools: CloudWatch, Nagios, Splunk, Grafana.

PROFESSIONAL EXPERIENCE

Confidential, Teaneck, NJ

Sr. Linux Administrator

Responsibilities:

• Installed & Up-graded Linux operating systems on physical and virtual machines.
• Configured and installed RHEL 5.X & 6.X & 7 on VMware and Physical Machines Administration of Cloud-Servers Section.
• Involved in suggesting different disaster recovery models.
• Amazon Web Services (AWS), EC2 Storage Managements integration and utilization within this infrastructure and applications.
• Infrastructure deployment, administration, troubleshooting and configuration virtual and cloud instances onAWSand VMware platforms.
• Configured Hardware in all range of Machines from workstations to Enterprise servers.
• Performing updates and upgrades on the systems currently on the network for performance and auditing purposes.
• Configuration of non-Profit Data center with OS images using Windows XP/7/8.1/10, Centos, Fedora and Debian Linux, wired and wireless network configuration.
• Administering Windows 2008 & Active Directory and migrated to 2012,2016,2019 R2
• Administered Windows 2012/2016 Active Directory, SharePoint, Exchange, DNS, DHCP, WINS, LAN, WAN, TCP/IP and building new windows physical/virtual servers as per the requirement of the project
• Involved in designing and writing functionalities of the web applications using Ruby on Rails.
• Migrated corporate Linux servers from physical servers to AmazonAWSvirtual servers.
• Installation and configuration of Apache web server.
• Utilized and configured Kernel Based Virtual Machines on Red hat Enterprise Servers.
• Generate self-signed SSL certificates and configure secure domains.
• Manage Linux VMs (Red Hat, CentOS, Fedora & Ubuntu) running in ESX 6.0/5.0.
• Experience with Jumpstart & Kickstart with PXE Installations on Solaris & Linux.
• Installing and upgrading software packages using rpm and yum utilities on Linux servers.
• Also Used Spacewalk and Forman for package management and Configurations. Worked on creating & maintain new NFS/CIFS shares and iSCSI LUNS.
• Install and configured Apache & Tomcat running on Linux webservers.
• In-depth knowledge and experience with Red Hat Enterprise Linux (including derivatives such as CentOS and Scientific Linux), Debian, Ubuntu and use of large-scale system administration tools such as Kickstart, CFEngine, Puppet, or in-house developed systems management tools. Support of common services such as NFS, LDAP, NIS, CIFS, MySQL, Apache
• Hands-on experience maintaining deployment automation with tools such as Puppet, Chef, or Ansible
• Experience working with Ansible, Docker, NGINX
• Deployment & Configuration Automation Experience (Chef, RedHat Ansible, and Puppet)
• Experience developing configuration scripts/processes including Ansible
• Experienced with creating self-signed SSL Certificates for webservers running internally and also installed on the server to enable HTTPS.
• User and group management and administrating many applications like JIRA, SPLUNK, ZABBIX, NAGIOS, SVN, BAMBOO and other tools.
• Responsible for documenting and maintaining complete and accurate information for all active and decommissioned servers.
• Configuring DNS, FTP, NFS, DHCP on RHEL 5, 6 & 7 machines.
• Converted Linux systems from local password authentication to Active Directory/LDAP.
• Maintained existing programs/scripts and extended Linux system functionality as needed.
• Packaged Rue code in RPM format and developed automation scripting in Bash and Perl.
• Designed and implemented Chef to configure, install, manage, and deploy releases across all environments.
• Worked extensively with Active Directory, Active directory, share point, and Microsoft Exchange Server.
• Configure and maintain MSCS (Microsoft Failover Cluster Server.
• Debug application, site performance issues. Perform root cause analysis of the issues and report.
• Replicate data across multiple servers. Prepare and execute backup and recovery for the data. Implement disaster recovery plans.
• Installation and configuration of Web Application servers like Apache, Tomcat and Web logic.
• Linux / UNIX administration and Enterprise Server Integration.
• Migration of servers for DC consolidation and tech-refreshes.
• Server Configuration and updating the application/Software as required.
• Configures CPU, Memory, and Disk partitions as required.
• Configuring Volume Groups and Logical Volumes, extended logical volumes for the system growth needs using Logical Volume Manager (LVM).
• Performing ongoing performance tuning, hardware upgrades, and resource optimization as required.
• Created disk groups, volumes, volume groups and RAIDs using LVM in RHEL & VERITAS Volume Manager.
• Configured & Implemented DNS, DHCP, NFS, SAMBA to support cross platform file sharing.
• Installed and configured VMware ESX server instances for virtual server setup and deployment.
• Back-up management with help of Commvault, installation of agent on servers, defining back-up policy, and service monitoring; restoration of files in case of exigencies.
• Patch and Package administration for installation of patches as per company policy and installation of packaged application
• Maintain and troubleshoot advanced infrastructure monitoring facilities including SCOM
• Integrate application and infrastructure monitors for new and existing implementations
• Deployed and managed SUSE Linux based servers and workstations, for production and lab usage.
• Maintained the Unix-based server infrastructure Kernel/firm ware, OS patches and maintenance level releases.
• Installation and configuration Veritas NetBackup Linux Severs and performing backup.
• Created VMware Virtual machines using vSphere and installed Red Hat Linux 5x/6 on the VMs and standalone Dell servers.
• Capacity Assessment for infrastructure components, Security audit and vulnerability assessment on infrastructure components
• Security hardening and user permissions to the groups defined in Active Directory.
• Security hardening and user permissions to the groups defined in Active Directory.
• Installed/configured EMC Storage with 0, 1 and 5, 10 RAID configurations
• Migrated VMWARE VMs to AWS and Managed Services like EC2, S3 Bucket, Route53, ELB, EBS Etc.… with Op’s code Chef Cookbooks/Recipes.
• Designed and implementedChef, including the internal best practices,cookbooks, automatedcookbookCI and CD system.
• Made use of Jenkins forChefCI, Thor for versioning, Berks’s elf for dependency management, and Test-Kitchen for testing and development.
• Wrote Ruby Scripts to Monitor Variety of Services & Shell Scripts with Hash/Arrays to Insert/Delete/Modify content in multiple servers
• Leveraged Docker Engine to run Multiple Tomcat Instances as Containerized App Servers.
• Installed, Deployed Red Hat Enterprise Linux 6.x/7.x, CentOS and installation of packages and patches for Red Hat Linux Servers.
• Wrote Ansible Playbooks with Ruby SSH as the Wrapper to Manage Configurations of Open stack Nodes and Test Playbooks on AWS instances using Shell Scripts.
• Administered and Engineered Jenkins for managing weekly Build, Test and Deploy chain as a CI/CD process, SVN/GIT with Devel/Test/Prod Branching Model for weekly releases.

Confidential, Chicago, IL

Linux / System Admin

Responsibilities:

• Managed and administrated all Linux OS and UNIX servers by applying relative patches and packages at regular maintenance periods using Red Hat Satellite server, YUM, RPM tools.
• Planned and performed the Linux OS upgrades and hardware maintenance like changing memory modules, disk devices, SAS, SATA & SCSI devices.
• Installed and configured Red Hat 5.x/6.x on Dell Power Edge server, VMware ESX server on Dell Servers and configured Red Hat Linux 5.0, 6.0 / Windows virtual machines for various applications.
• Handled issued related to NFS, Auto Mount, DNS, LDAP.
• Identified, troubleshoot, and resolved problems with the build process
• Installed, configured, and customized services in Send mail, Apache, FTP servers, as requested.
• Performed kernel & database configuration optimization to limit I/O resource utilization on disks.
• Monitored CPU, memory, physical disk, Hardware and Software RAID, multipath, file systems.
• Checked log files and used cluster commands to troubleshoot cluster related problems.
• Performed Kickstart installations in Linux.
• Working on Active Directory for role group and host group configuration setup.
• Administration and maintenance of RedHat Linux 6.1.
• Worked on User administration setup, maintaining account, Monitor system performance.
• Writing Shell and bash Scripting for automation of job.
• Experience in system Software installation and configuration of NFS shares, Auto-Mounter, DHCP and LDAP.
• Created and modified Veritas Cluster Service Groups and managed switchover from node to node and just as importantly, from interstate primary and DR sites
• Manage logical Volume manager on Red hat Servers.
• Scheduled cluster on Grid and installed applications with it.
• Troubleshooting day-to-day server related issues and problems in terms of operating system, applications and network.
• Creation of VMs, cloning and migrations of the VMs on VMware vSphere 5.0.
• Worked efficiently on managing the RAID, File system through LVM and creating and managing
• Logical Volume Manager in Red hat Linux.
• Used Ant Build scripts for compiling and deploying the application onto Apache Tomcat Web Container.
• Worked on Configuring JDBC Connection Pools, Data Sources, Executed Threads etc.
• Used various security roles for maintaining security realms in staging and production environments.
• Performed File system and Application backups.
• Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux 5.
• Configured Network Concepts NFS, DNS, NIS and DHCP, troubleshooting network problems such as
• TCP/IP, providing support for users in solving their problem.
• Performed administrative tasks such as system start-up/shutdown, backups, Printing, Documentation
• User Management, Security, Network management. Involved in day-to-day
• Operations, installed new OS or software, applied patches, managed file systems, monitored performance, and troubleshoot alerts, Solved Server Problems in Linux
• Handled Logical Volume Manager (LVM) related tasks, Creating, resizing LVM, Veritas Volume manager and managing Cluster environment using Veritas Cluster suite
• Worked on remote system administration via tools like SSH and Telnet
• Performed troubleshooting on DNS, DHCP, LDAP and network problems.
• Integrate and implement server solutions and server components such as proxy servers, web servers,
• Application servers, database servers, directory servers, core infrastructure services (Proxy, DNS, SSH, SMTP, etc.)
• Involved in troubleshooting Production Server Problems related to web applications, Send mail, diskspace, Filesystem, DNS and network connectivity.

Confidential, Riverdale, Utah

Linux/Unix Admin

Responsibilities:

• Assisting in planning and implementation of virtual environment.
• Creating a procedure for the P2V migration.
• Analyzing the servers to be virtualized or migrated.
• Managed a decent cloud storage environment withVrealizecloud environment, performed backups and Audit reports based on user log information fromVrealize.
• UsedVMwarevCenter, created DataCenter Environment by creatingVMwareclusters, adding ESX hosts in the clusters, and implemented HA and DRS.
• Performed physical to virtual (P2V) migrations for approximately 500 physical servers utilizing VMware Converter.
• Daily provisioning and optimization of storage environment with NetApp FAS3050, FAS3160, FAS270.
• Administrating multiple labs in VMware Lab Manager.
• Worked on deploying Linux SuSE 10, 11 and 12 versions.
• Upgraded from Linux SuSE version 10 to 11 and from 11 to 12.
• Deployed RDSH in windows 2008 and windows 2012 server versions.
• Worked over RDSH in updating operating systems from windows .
• Installed and upgraded Horizon Client suite environment toVMwarehorizon 6 version.
• Involved in installing/configuring and troubleshootingVMwareLab Manager and administrating multiple labs in Lab Manager and dealing with Lab Manager Issues.
• Troubleshooting &testing of VDI instances.
• Involved in built and deploy the windows XP and windows 7 golden image for the VDI environment.
• Used HP C7000 blade enclosures with installing multiple layers of HP blade servers.
• Upgraded from HP C7000 server to HP C7000 platinum server, which improve transmission speeds at exponentially high level.
• SCCM Configuring and installing enterprise edition and SCCM backup, maintaining redundancy.
• Upgrading system severs on SCCM from, SCCM R2 to SCCM R2 SP1 at client level server.
• Managed EPIC infrastructure, regarding Health care management.
• Designed work flow and data base architecture using EPIC.
• Reduced CPU load on NetApp filers from 90% to 55% by optimizing volume configuration.
• Planned and performed a head swap from a NetApp FAS3050 to a NetApp FAS3160.
• Installing, configuring and troubleshootingVMwareView.
• Performed tons of V2V Migration.
• Performed operation on Team city on tool building at the application level.
• Worked on SCSI internet protocol commands and perform data transfer via serial communication, worked on SCSI versions such SCSI-FCP and SCSI-UAS.
• Discussing with the user and team and scheduling migration and monitoring migration.
• Creating a workflow for Pre/Post Migration.
• Perform operational turnover on all system implementations.
• Migrating machines either P2V or from Microsoft Hyper V environment toVMware environment
• Worked with Servers like Windows 2000, 2003, 2003R2, 2008, 2008R2.
• Troubleshoot outlook problems and managed users archives in network.

Confidential, Sunnyvale, CA

Linux/ UNIX Administrator

Responsibilities:

• Responsible for resolving network issues using network tools likeping, tcpt race route,traceroute,tcp dump.
• Develop and maintain the documents, library and procedural documents of the system.
• DevelopedShell Scriptsfor automation of daily tasks.
• Installation/Administration ofRHEL 5.6andFedoraon Multiple Servers configuration, testing on both physical and virtual machines.
• SupportedRed Hat Linux RHEL 5.6andFedora Core 18.x/17.x Servers
• Worked asLinux AdministratorSupporting the Server farm in 24X7 Production Environment.
• DevelopLinux shell scriptsto accomplish redundant tasks to simplify in distributed administration.
• Worked onSecurity/AuthorizationsCreated users with limited and full root privileges. Create and managesudoers.
• Perform day to dayLinux administrationsuch asuser accounts, logo and scripts, directory services,file system shares,permissions. SupportOracle database.
• UtilizedRemedyfor data center service requests Network requests for IP's, ILOs, and DNS changes.
• Acquired comprehensive requirements from Project Managers, Team Leads pertaining to the servers to be migrated.
• Performing change management as per company standards in accordance with the hardware provider.
• Horizontal and Vertical Clustering. Setup Node Managers and Admin Servers.
• Attended team meetings,change controlmeetings toupdateinstallation progress, and for upcoming changes in environment.
• Supported around 200 whole root zones running onSolaris 10 environment.
• Maintained 15VMware ESX serverconnected with twoEMC VNX SAN boxand managed of twoCisco MDS switchusingFabric Device management tool.
• Clustering solutions for High Availability using tools such asVeritas Cluster Server VCS, MSCS, RHCS.
• Configuring and maintaining virtual server environment usingVMWARE ESX,VCenter V Sphere, andSolaris 10 Zones.
• Installation and Configuration ofSun Enterprise Servers,HPandIBM Blade Servers C 00,HP Itanium
• Involved and set up migration forUNIX/Linuxserver andSAN storagebetweendata centresand also application migration and testing.
• This includedSAN/Application migration and testing various functionalities of key applications.
• Setting upJBoss clusterand configuringApachewithJBoss on Ret Hat Linux. Proxy serving withApache.
• Setting upcronschedules for backups and monitoring processes.
• Automated server building usingSystem Imager,PXE, KickstartandJumpstart, forSolarisandRHEL Servers.
• Upgrades, installs, configuration and administration security and monitoring tools onLinux.
• Excellent inpatchesandpackages installationonLinux/UNIX Environment.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager LVM commands.
• Experience in Linux kernel configuration.
• UpdatingYUM RepositoryandRed hat Package Manager RPM.
• Monitored Linux server for CPU Utilization, Memory Utilization, and Disk Utilization for performance monitoring.
• Building Customized Scripts / LVM for the SAN HOST based migrations.