SUMMARY

• 8+ years of IT administration Multiplatform experience on server - based operating system, kernel configurations on UNIX/LINUX flavors - RHEL/Cent OS (5, 6, 7), Ubuntu (14, 16, 18), Sun Solaris (9, 10, 11).
• Experienced Unix/Linux System Administrator with a demonstrated history of working in the information technology, Networking, Kernel parameter & Tuning, troubleshooting system & Performance issues, Package management and patch management, Cloud infrastructure andservices industry
• Automated the Linux/Unix infrastructure tasks for process automation of databases, applications, backups and scheduling using Shell and Python scripts
• Responsible for various system Administration tasks UNIX to LINUX migrations, DC migration physical to Virtual migration for customers
• Experience on installation of IBM Web Sphere applications like Message Broker, Integration Bus, App connect Enterprise and WebSphere MQ
• Deploy, configure, maintain compute on Azure cloud
• Experience on installation of VMware ESX, ESXI migration of VM’s from one host to another host, migration of VM’s from one data storage to another data storage, patch management
• Worked on Windows server 2003, 2008, 2016 OS on applying the security patches to remediate the vulnerabilities and handling few administrator tasks.
• Experience in dealing with Windows - Virtual Networks, Virtual Machines, Cloud Services, Resource Groups, Express Route, VPN, Load Balancing, Application Gateways, Auto-Scaling, and Traffic Manager.
• Major focus on Configuration, SCM, Build/Release Management, Infrastructure as a code (IAC) and as Azure DevOps operations Production and cross platform environments
• Experience with Tripwire and SIEM technologies.
• Responsible for Middleware software management, building, installing, and configuration of Linux based servers, deploying and testing OS, security updates, baselines and disk imaging, upgrades, patching, load sharing facility (LSF) and maintenance and Disaster recovery exercises
• Provided Disaster recovery and backup/recovery support for large scale data centers globally
• Handled Disaster Recovery with high availability across distributed data systems and data domains
• Upgraded Disaster Recovery backup and recovery documentation including databases
• Provided Disaster Recovery support for clients using different hardware on different Linux flavors
• Working experience on Windows Active Directory and LDAP
• Configured Kickstart servers for complete hands-free installation of workstations with custom profiles, begin/finish scripts and custom package suites/clusters
• Install and manage security reporting tools used to monitor changes to the Active Directory
• Expert knowledge of AWS Cloud and their technology offering, APIs and Enterprise integration points.
• Troubleshoot AWS related issues and engaged internal teams and vendor for issue resolutions
• Having good experience on RedHat Satellite 6, IBM BigFix with OS patching, upgrading and deploying on RHEL servers
• Integration of various network related services like NFS, NIS and DNS
• Installation and configuration of Apache, Tomcat / WebLogic on Linux servers and database installation includes Oracle, SQL and MYSQL
• Configuration management for Web Application server Tomcat, Apache, WebLogic and WebSphere
• Monitor Disk space and space as needed in LVM, setup and administration of VERITAS Volume manager and HA Clusters
• Basic knowledge of networking devices such as F5 load balancers
• Experience on storage LUN migration as per requirements
• Implemented and key person on AIX to RHEL 7 migration process with Infrastructure App analysis, standard build, Functional application analysis, Readiness and risk analysis, Strategic migration plan formation and Migration implementation
• Hands on experience with ticketing tools such as Service now, Remedy, JIRA and BMC service desk express
• Handled various operation escalated issues, performance optimization and tuning wherever required
• Worked on some account management type tasks were done such as clear to new server builds, internal documentation updates, contacting customers for scheduled maintenance and more
• Experience with SSL certifications and implementation/renewal of certificates
• Experience on working with certificates like installation of SSL Certificates on Linux servers and SSL/TLS usage and troubleshooting
• Worked on Kickstart files, PXE boot and Ansible playbooks for automation
• Experience in administering servers running on KVM, VMware ESX, and Hyper - V and vSphere
• Experience in configuration of DNS, NTP, DHCP, NFS and LDAP.
• Experience on Networking (TCP/IP, httpd, TCP dump, VLAN tagging).
• Built and deployed Docker container for improving developing workflow, increasing scalability and optimizing speed.
• Experience on Solar Winds, Morpheus, Nagios and Logic Monitor monitoring tools for daily health check-ups, performance monitoring, failure analysis
• Configuration of high availability cluster across Red hat and perform HA test
• Worked on advanced systems administration, operational support and problem resolution for UNIX/LINUX based systems.
• Extensively worked in setting up Pluggable Authentication Modules (PAM) authentication for AD on SUSE and Ubuntu servers.
• Having knowledge and familiarity on load balancing, firewalls.
• Experience on Windows Active Directory, DNS, DHCP, Windows desktop and Remote desktop. Implementation and administration of Active Directory in Windows 2008, 2012 and 2003 environment. Creating and Managing Users, Roles and Access Permissions.
• Team player with good management, analytical, communication and Interpersonal skills.

TECHNICAL SKILLS

Operating Systems: RHEL/CentOS 5, 6, 7, Ubuntu 14, 16, 18, SLES (SUSE) 12, 15, Solaris 10, HP-Unix, AIX (VIO, HMC), HPC Cluster, ITIL Process, 24x7 Operation support, IBM-AIX 5.x/6.x/7.x, HP-UX 11.x, SUSE Linux 10/11, Ubuntu, Windows 2003, 2008 R2, 2012, VMware 4/5/6.

Cloud: AWS, Azure Cloud and Open Stack Cloud

Hypervisor: KVM, VMware (vSphere, v Motion), Xen, Hyper-V, Nutanix

Hardware: HP ProLiant, Blade servers, Super Micro Servers, Dell PowerEdge, Dell EMC (iDRAC), Storage servers NetApp

Security Monitoring Tools: HP ArcSight, RSA Envision, Splunk, IBM Q radar and Tripwire

Software: ITIL Process, Service Now, Remedy (ITSM), Splunk, Thycotic, SolarWinds, Jira, Nagios, Morpheus, Microsoft teams

Web/ Application Server: IBM WebSphere Message Broker, Integration Bus, App Connect Enterprise, WebSphere MQ, JBoss, NGNIX, WebLogic, Apache servers, LAMP architecture, PKI (Public key Infrastructure), Digital certificates, Postfix, JBoss, Tomcat, Web Logic, WebLogic.

Active Director: Kerberos, LDAP, NTP, Samba

Database: MySQL, Oracle, NoSQL, MariaDB, Oracle 8i, 9.2.x, 10, MySQL, Cassandra and PL/SQL and Postgres SQL

Storage: NetApp, Active Directory, Samba, Kerberos, PAM

Network Protocols: DHCP, DNS, SSH, NTP, SNMP, SMTP, HTTP/HTTPS, Firewall, SE Linux, NFS, NIS, RAID, TCP/IP

Scripting Language: Bash, Python, Ruby, HTML, Java script, C, C++, Perl, PowerShell, Puppet, Chef.

DevOps Tool: Ansible, Puppet, Gitlab & Gitlab Runners, Jenkins, CI/CD, Jenkins, GitHub, Docker and Kubernetes

PROFESSIONAL EXPERIENCE

Confidential, San Jose, CA

Sr. System Engineer/DevOps Engineer

Responsibilities:

• Installations and Configurations of new Red Hat 6/7/8, Oracle Linux servers, CentOS, SUSE Linux and Windows 2008/2012/2016/2019 servers.
• Worked on the installations of the new ESX hosts on the Cisco UCS physical servers.
• Designed and developed standalone data migration applications to retrieve and populate data fromAzureTable BLOB storage to on premise SQL Server instances and Used Python API for uploading all the agent logs intoAzureblob storage,
• Configured AWS Virtual Private Cloud (VPC) and Database Subnet Group for isolation of resources within the Amazon AWS RDS Oracle DB cluster.
• Responsible for design and maintenance of the Git Repositories, views, and the access control strategies.
• Installed, maintained and migrated VMware ESX server 5.5/6.0/6.5/6.7/7.0 and created virtual machines on ESX Servers.
• Written templates in JSON format for cloud formation and YAML Script for Ansible automation and contributed source code to the GitHub repository.
• Configuration of nodes for Jenkins to customize builds for different operating systems, optimize and smooth running of builds jobs.
• Hands-on experience on Ansible and Ansible Tower as Configuration management tool, to automate repetitive tasks, quickly deploys critical applications, and proactively manages change.
• Implementation Of different Host Profiles for Multiple Clusters across Multiple Data centers
• Implementation of SRM on vSphere across multiple sites to provide Disaster recovery solution forVMwareVsphere Environment, vSphere Linked Mode and replicated storage, Configuring Sites Roles and Privileges, Alarms for monitoring the Site Status. Failback Testing from Protected Site to Recovery Site in SRM and Shared Recovery Site across multiple Protected Sites
• Proficient with RedHat Linux and Debian based operating systems, Installed Fuse to mount the keys on every Debian Production Server for password-less authentication.
• Deployed the initial Azure components like Azure Virtual Networks, Azure Application Gateway, Azure Storage and Affinity groups.
• Huge Experience usingVMwareconverter running different applications (.net, java), CRM, with Different Hardware.Worked with RMS, KMS, active directory, FTP, IIS, SCCM 2012, SCOM, WSUS.
• Database Upgrade for VCenter and update manager from SQL 2005 to SQL 2008 on 2 vCenter Servers
• Building VM from clones and templates.
• Migrated physical server to virtual servers using VMware convertor and was part was data center move which was consolidated to one location.
• Performed datastore migration usingVMwarestorage v Motion on Net apps NFS, SAN & NAS Storage.
• Troubleshoot IIS 6.0, 7.5, & 8.0, Database connectivity issues with Active Directory, component services, and ASP.Net applications for correct settings enabled in servers.
• Worked closely with Storage team for provisioning and configuring the LUNs to Esxi servers.
• Deployed VMware V center operations manager and Infrastructure navigator in the production environment to monitor performance of Virtual servers and datastores.
• Experience in Bash, Python and Perl scripts for backup and automation.
• Worked on Shell & Python scripting.
• Built servers with kick-start and automated post-install scripts with Python Fabric.
• Excellent scripting skills in bash/python
• Performed tasks for automating and ease of administration using Python/Shell scripting. Checked-in Scripts to subversion for version control.
• Integrated Azure Log Analytics with Azure VMs for monitoring the log files, store them, and track metrics, and used Terraform as a tool, Managed different infrastructure resources Cloud and Docker containers.
• Worked with global delivery of projects with different onsite and offshore teams.
• ImplementedVMwareSRM for multiple sites, utilizing VR and other SRM technologies.
• Automated virtual machine builds using power shell, VB script and powercli scripts.
• Created standard server builds, update servers with latest service packs and hot fixes.
• Created standard process for group policy deployment as well as Active Directory users and group.
• Configure and upgrade Flex-10/Flex Fabric Shared Uplink Sets, SAN& NAS Fabrics, and Server Profiles n Virtual Connect Manager for BL460c, BL680c g6/g7/g9 on HP C7000 enclosures.
• Configure and maintain MSCS (Microsoft Failover Cluster Server.
• Installed new service pack for Firmware update.
• Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in Red Hat Linux, HP-UX and AIX.Day to day trouble shooting for end users on UNIX/LINUX.
• Responsible for Administration, Installation, Upgrading, Migration, Configuration, Troubleshooting, Security, Backup, Disaster Recovery, Performance monitoring and Fine-tuning of UNIX systems.
• Managed several hundred UNIX servers running RHEL on HP and Dell hardware including blade centers and IBM AIX on Power Series.
• Utilized resync for transferring and synchronizing files and data across multiple servers

Confidential, Los Angeles, CA

Sr. System Engineer/ Linux Administrator

Responsibilities:

• Primary responsibility includes building and supporting red hat Linux servers.
• Installation and configuring of Linux/Unix 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
• Troubleshooting Linux OS related issues like Disk, CPU utilization, Memory Utilization, SSH.
• Performing patching, upgrades and security support with extensive troubleshooting of OS and application issues
• Extensive use of VERITAS Volume Manager for Disk management, file system management on Sun Solaris environment.
• Implemented day-to-day tasks in RHEL and CentOS that includes upgrading kernel, configuring, multi-pathing, NAS Mount and Unmounts.
• Worked on post build activity like NetBackup client, installing required packages which are requested by application and database team.
• Solid understanding of LDAP/Kerberos authentication systems such as Red Hat IdM, FreeIPA or Microsoft Active Directory
• Exp. with BIND/DNS knowledge and LDAP authentication. Knowledge on Tivoli Directory Services a plus
• Installation of SSH and configuration of key based authentication.
• Archive, compress, unpack and uncompressed files using tar, gzip and bzip2.
• Supporting the application team on the go live activities.
• Installing OS on physical servers manually, by using foreman tool and supporting them.
• Configuring the IPMI, RAID controllers during the build phase and make sure they comply with the company standards.
• Developed Puppet modules to automate deployment, configuration, and lifecycle management of key clusters.
• Created Zettabyte file system (ZFS) in Solaris 10. Created z pool. Exported ZFS from local zones to local zones.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• 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.
• Basically, one can install Kafka open source or confluent version on windows and Linux/Unix systems.
• Efficiently Worked with all of the following tools/Instances but not limited to including: Kafka, Zookeeper, Console Producer, Console Consumer, Kafka Tool, File Beat, Metric Beat, Elastic Search, Logstash, Kibana, Spring Tool Suite, Apache Tomcat Server etc.
• Used Elasticsearch for powering not only Search but using ELK stack for logging and monitoring our systems end to end Using Beats.
• Worked on google cloud platform (GCP) services like compute engine, cloud load balancing, cloud storage, cloud SQL, stack driver monitoring and cloud deployment manager.
• Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, HW and SW RAID, multipath, file systems, network using the tools NAGIOS and BMC Tools.
• User Administration, Package Installation method (RPM, YUM, APT-GET)
• Following Agile Scrum methodology for the delivering the products.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, BEA Web logic etc.
• The daily mix of tasks includes migration of AIX server to Linux (RHEL/CentOS)
• Installing and troubleshooting Ftp, MySQL, php, phpMyAdmin, VNC, Apache, Tomcat, NTP, and NFS.
• Extensive use of VERITAS Volume Manager for Disk management, file system management on Sun Solaris environment.
• Solid experience in C Programmer/C++ or Java programming on Windows and/or Linux
• Created Zettabyte file system (ZFS) in Solaris 10. Created z pool. Exported ZFS from local zones to local zones.
• Experience in dynamic orchestration schedulers, including Kubernetes or OpenShift, Apache Mesos, Docker Swarm, or Hashi corp Nomad in a production environment
• Knowledge of PaaS or CaaS solutions or technologies, including Kubernetes, Cloud Foundry, OpenShift, Mesosphere, and Docker Data Centre.
• Knowledge of container technologies (architecture, build and execution of Docker images) and orchestration Kubernetes (Red Hat OpenShift)
• Basic Administration of VMware like adding disk and checking logs etc.
• Installation and configuration VERITAS NetBackup on Sun Severs and performing Backup using VERITAS Net Backup

Confidential, Palo Alto, CA

Sr. Linux System Engineer

Responsibilities:

• Managed and administrated all Linux OS and UNIX servers by applying relative patches and packages Confidential 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.
• Administration & Management of VxRail E Series Clusters using VxRail Manager ver.4.5
• 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.
• Worked on build and deployment of Java application to various client environments.
• 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.
• 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, disk space, Filesystem, DNS and network connectivity.

Confidential

System Administrator

Responsibilities:

• Responsible for supporting Linux servers for production, development and testing.
• Installing, Configuring and Maintaining the DHCP, DNS, NFS, NIS, send mail server.
• User Account Management, Group Account Management, configuring dumb terminals, adding modems, formatting and partitioning disks, manipulating swap, local and remote printer management, taking and restoring backup, scheduling jobs.
• Performance tuning and preventive maintenance
• Performed daily backup.
• Performed addition of Swap space Confidential run time
• Performed installation and configuration of LDAP.
• Resolving TCP/IP network access problems for the clients.
• Implementing Remote System Monitoring with Sun Microsystems.
• Performed administrative tasks such as system startup/shutdown, backups, Printing, Documentation, User Management, Security, Network management, configuration of dumb terminals.
• Troubleshooting backup and restore problems and performed day-to-day trouble shooting for the end users on Solaris and Linux based servers.
• Develop, Maintain, update various scripts for services (start, stop, restart, recycle, cron jobs) UNIX based shell, Perl.
• Configured and maintained NIS, NFS servers on Linux.
• Setting up Oracle 8 server in Linux/Unix environment.

Environment: Linux (Red Hat Enterprise, CentOS), Windows 2000/NT, HP, IBM, Solaris, Oracle 8, SSH Gate, Cisco routers/switches, Dell 6400, 1250, Sun E450, E250.