Name: VishnuTeja.

Mobile: 518-***-****.

Email: ac8u9z@r.postjobfree.com.

7+ years of IT experience specialized in Linux System Administration working on server-based operating system; kernel configurations on Redhat Linux, CentOS, SUSE, Debian 7, Ubuntu 12.x/13.x, kernel Parameter & Tuning, Trouble Shooting System & Performance Issues. Extensive experience includes SCM, DevOps Build/Release Management, AWS, Change/Incident Management and Cloud Management.

PROFESSIONAL EXPERIENCE

Client: NYS Office of Information and Technology, Albany, NY. Oct-2016 - Feb-2019

Role: Linux Admin

Responsibilities:

•Involved in building and configuring Redhat Linux Servers using Ansible as automation tool .

•Experience in writing playbooks for Ansible and deploying applications using Ansible Tower.

•Experience in creating, updating and configuring templates in Ansible Tower

•Good experience on automated installing the Linux packages and administering Linux service using Ansible, and automating product installation configuration.

•Worked on creating all high level design documentation for Ansible Core and Ansible Tower infrastructure.

•Worked on GITLAB for source code on private repository.

•Configured, tested and troubleshoot newly built Linux servers with nic card configurations

•Administrating server infrastructure consisting of 1000+ virtualized servers running on Vsphere, VMware ESXi host with HA.

•Installing new/rebuilding existing servers which support infrastructure (NFS, Automount NFS, DNS, CNAME)

•Working on Infoblox for creating, configuring, updating DNS, CNAME, A records and Host records.

•Worked on ITSM Ticketing system to track tickets to our team and resolved them as per the TAT.

•Installation of patches and packages using RPM and YUM in Red hat Linux.

•Created and modified application related objects, created Profiles, users, roles and maintained system security.

•Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.

•Modified Kernel parameters to improve the server performance in Linux.

•Research and recommend innovative, and where possible, automated approaches for system administration tasks.

•Worked with Data-Center operation team in performing migration across Linux platforms.

•Experience in Creation and managing user accounts, security, rights, disk space and process monitoring RedHat Linux.

•Experienced in working with the NETAPP team regarding NFS shared disk space issues.

•Experience in configuration of DNS, CNAME, DHCP, NFS, postfix, send mail, FTP, remote access, security management and Security trouble shooting skills.

•Setting up directory shares with NFS servers, and configuring clients as NFS clients.

•Experienced on RedHat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.

•Worked on Creating COI’s for the network firewall on multiple environments.

•Installed stealth (secondary firewall software) on over 700+ linux servers which uses COI rules.

•Independent problem solving and a good team player with strong interpersonal and communication skills.

•Working with Commvault Team to work on daily backups on production servers and biweekly on non-prod servers.

Environment: RHEL 6.x,7.x, Redhat Satellite, Ansible, Ansible Tower, Vsphere, YUM, DNS, NFS-NETAPP, Commvault, Infoblox, ITSM, GITLAB,Stealth.

DevOps& Cloud Engineer

American family Insurance – Coral springs,FL - Oct 2014 to Sept 2016

Description:

American Family Insurance (aka AmFam) is a private mutual company that focuses on property, casualty and auto insurance, but also offers commercial insurance, life, health, and homeowners coverage, as well as investment andretirement-planning products. A Fortune 500 company, its revenues for 2008 were over $6.7 billion.

Responsibilities:

•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.

•Experience in managing virtual instances and disks using Puppet and Deployed Puppet, Puppet dashboard for configuration management to existing infrastructure .

• Managed environments DEV, BCP, UAT and PROD for various releases and designed instance strategies .

•Configured applications in virtual private cloud (VPC) and hardened it from malicious attacks using 2-layer protection from security groups (at instance level) and network access control lists (subnet level) and using network access translator (NAT) instance. .

•Deployed LAMP based applications in AWS environment, including provisioning MYSQL -RDS and establish connectivity between EC2 instance and MySQL-RDS via security groups.

•Good knowledge on Go language essentials like structs, moar structs,interfaces, variadic functions, maps.

•Explored and Used Go language to develop WEB Applications and services like API’s, Web servers and Minimal Frameworks.

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• Configured Elastic Load balancer(ELB) including high availability of ELB using various subnets in various availability zones, configured security settings and health check for application.

•Created customized AMIs based on already existing AWS EC2 instances by using create image functionality, hence using this snapshot for disaster recovery.

• Created AWS Launch configurations based on customized AMI and use this launch configuration to configure auto scaling groups and Implemented AWS solutions using EC2, S3, RDS,DynamoDb, Route53,EBS, Elastic Load Balancer, Auto scaling groups.

•Architected and led migration to AWS and Implemented AWS Redshift for an automated media buying network including integration of Tableau for data visualizations.

•Kafka Messaging Cluster has been used to provide distributed publishing.

•Application uses RabbitMQ/AMQP for events processing and exchanges/queues to route messages between servers.

•Real-time updating of the user-interface was achieved using RabbitMQ as a data-provider for back-end REST services

•Installed high availability Big IP F5 LTM and GTM load balancers to provide uninterrupted service to customers.

•Developed containerized docker architecture solutions and maintained containers on a

private Docker Hub.

•Developed a container orchestration and deployment system using Docker Swarm.

•Virtualized the servers using the Docker for the test environments and dev-environments needs. And also configuration automation using Docker containers.

•Worked on JIRA and Bugzilla, cucumber (Ruby Scripting ) for bug tracking issue and Automated the JIRA tasks using Jira cli and Perl.

Environment:

Puppet, Apache, VPC, NAT, LAMP, AWS – EC2, S3,Route 53, OPSWORK, Go lang, VMware,JSON,CLOUDWATCH, REDSHIFT, ELB, EBS, DYNAMODB, AMI, Load balancer, Auto Scaling,SVN, GITHUB, Docker, Kafka, RabbitMQ,JIRA, MAVEN, Jenkins, Cucumber, Bugzilla,.

Build Release Coordinator

Cybage Software Pvt Ltd - Hyderabad, Telangana

January 2013 to July 2014

Description:

Cybage Software Pvt. Ltd. is a technology consulting organization specializing in outsourced product engineering services. As a leader in hi-tech and product engineering space, Cybage works with some of the world's best Independent Software Vendors (ISVs). Our solutions are focused on modern technologies, and are enabled by a scientific, data driven system called Excelshore® Model of Operational Excellence. This unique model de-risks our approach, provides better predictability, and ensures a better value per unit cost to our clients.

Responsibilities:

•Automated both .Net and Java Applications using industry's best automation tool Hudson.

•End to End automation from Build to Production is implemented.

•All un-authorized access is revoked and Principle of Least privilege is applied with the aid of these tools.

•ITIL best practices were brought in to the normal SDLC process and lead the effort of bringing change in the organization.

•Facilitating the projects in Quality related activities as per QMS process.

•Maintenance of Configuration items in Harvest.

•Generalizing Audit Trail Reports and Time Sheet Report .

•Prepared mock cutover plans and cutover plans for Pre-Prod and Prod Deployments

•Conducting and Attending Project Status Review Meetings and Casual Analysis Meeting for release activities

•Prepare the resources (People and environments) for the build / Releases

•Publish the changes with respect to CI's and amend affected documents periodically

•Ensure that back-ups are taken periodically.

•Creating the release responsible as instructed by the PM.

•Responsible for the build and release management process.

•Responsible for automated build scripts and build issues.

•Troubleshoot tickets on the helpdesk tracking system.

Environment: ANT, Maven, Web logic, Perl Scripts, Shell Scripts, LINUX, SVN, Hudson.

Linux Administrator

HDFC Bank - Hyderabad, Telangana - Sept 2011 to December 2012

Description:

The Housing Development Finance Corporation Limited (HDFC) was amongst the first to receive an 'in principle' approval from the Reserve Bank of India (RBI) to set up a bank in the private sector, as part of RBI's liberalization of the Indian Banking Industry in- 1994. The bank was incorporated in August 1994 in the name of 'HDFC Bank Limited', with its registered office in Mumbai. HDFC Bank commenced operations as a Scheduled Commercial Bank in January 2005

Responsibilities:

•Administered, maintained Red Hat 3.0, 4.0, 5.0, 6.0 AS, ES, Troubleshooting Hardware, Operating System Application & Network problems and performance issues; Deployed latest patches for, Linux and Application servers, Performed Red Hat Linux Kernel Tuning.

•Administered Linux servers for several functions including managing Apache/Tomcat server, mail server, and MySQL databases in both development and production.

•Experience in implementing and configuring network services such as HTTP, DHCP, and TFTP.

•Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on Linux servers.

•Experienced working with Preload Assist and PICS projects.

•Installing and setting up Oracle9i on Linux for the development team.

•Linux kernel, memory upgrades and swaps area. Red hat Linux Kickstart Installation.

•Capacity Planning, Infrastructure design and ordering systems.

•Created users, manage user permissions, maintain User & File System quota on Red hat Linux.

•Worked with DBAs on installation of RDBMS database, restoration and log generation.

•Bash shell-scripts to automate routine activities.

•Monitored trouble ticket queue to attend user and system calls.

Environment: Red Hat Linux 3.0,4.0,5.0 AS ES, HP-DL585, Oracle 9i/10g, Samba, VMware Tomcat 3.x, 4.x, 5.x, Apache Server 1.x, 2.x, Bash.

EDUCATION

Bachelors in Computer Science

JNTU

ADDITIONAL INFORMATION

Operating Systems: Linux (RHEL 4, 5, 6, 7) (CentOS 5, 6.5, 7) UNIX, Windows, 8, 10, IBM-AIX. Version Control Tools CVS, SVN, YAML, GIT, Shell, Perl, Ruby, Python, JSON, Shell Programming

Databases: My SQL, MS Access, Oracle, MongoDB, Reddis

ApplicationServers:

Tomcat,Weblogic,WebSphere

Tools: Ansible, Tower, Redhat Satellite, ITSM, Infoblox, Vsphere, Gitlab.

Cloud :

AWS EC2, VPC, EBS, AMI, SNS, RDS, EBS, CloudWatch, Cloud Formation AWS Config, S3, Cloud Trail, IAM. VMWare, Elastic Beanstalk, DynamoDB, RedShift and Route 53

Network Protocols:

DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF,BGP, TCP/IP, and tcpdump, FTP, TFTP.

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