HEMANTH TIYYAGURA
Houston,TX
Summary
- Certified CKA, RHCSA, and RHCE IT Professional with 8+ years of experience in the IT industry with a major focus on Linux/Unix administration, software configuration, and build/release (deployment) Management.
- Experience in Linux Administration Installation, Configuration, Tuning and Upgrades of Linux (RedHat/CentOS and Ubuntu)
- Performs necessary system maintenance in accordance with Red Hat best practices and Company change management policies.
- Worked on cloud-based servers like AWS and GCP
- Implemented the AWS Cloud platform and its features, which include EC2, VPC, EBS, AMI, SNS, RDS, EBS, Cloud Watch, Cloud Trail, Cloud Formation, AWS Config, auto-scaling, Cloud Front, IAM, S3, and Route53.
- In-depth understanding of the principles and best practices of Software Configuration Management, which include compiling, packaging, deploying, and Application configurations.
- I am proficient with container systems like Docker and container orchestration like EC2 Container Service and Kubernetes.
- Managed Docker orchestration and Docker containerization using Kubernetes.
- Used Kubernetes to orchestrate the deployment, scaling, and management of Docker Containers.
- Strong experience in managing the Kubernetes environment for scalability, availability and zero downtime
- Experienced in deploying microservices to App Servers
Good experience with Helm charts deployments, writing manifest files to deploy K8s objects/microservices - Good Knowledge in Shell and Python scripting
- Experience in and demonstrated understanding of source control management concepts such as branching, merging, labeling, and integration.
- Good knowledge of managing the Nexus and Artifactory repositories for the maven artifacts and dependencies.
- Experience in building and deploying Java applications and troubleshooting build and deployment failures.
Experience in maintaining and executing build scripts to automate development and production builds - Experience on web servers, including Apache HTTP server, NGINX, Apache TOMCAT and application servers
Overview
9
9
years of professional experience
Work History
DevOps Engineer/Senior Linux Administrator/Deployment Engineer
ADP
Atlanta, GA
02.2022 - 06.2023
- Jenkins master and slave nodes were installed and configured, creating a CI/CD pipeline and managing the infrastructure.
- Administration of CI/CD applications Jenkins, Artifactory, SonarQube, and Docker.
- Developed Terraform modules to provision cloud infrastructure in different environments.
- Used the Shell scripts to automate day-to-day activities and tasks.
Managed GIT Configuration, Branching, merging, resolved conflicts, pushed the changes, etc. - Worked with vendors to troubleshoot the issues related to Red Hat servers and performed the Linux OS patching and upgrade from v7 to v8.
- Closely worked with the app management team, Development team, and Testing team to resolve the blockers.
- Performed the weekly release deployments, hot fix deployments, and Emergency releases (ERR) and troubleshooted the issue during the deployments on both Legacy and Kubernetes environments..
- Responsible for taking the source code, compiling it using Maven, and packaging it in its distributable format, such as a WAR file.
- Executed Ansible playbooks using various roles for applications and deployed them on host servers.
- Worked with Ansible to manage the Red Hat servers for any configuration changes and new installation/updates.
- Deployed the applications to Tomcat Application Server and the static content to Apache web servers.
- Worked on Docker containers to create Docker images for different environments.
- Setup the Nginx Ingress Controller to manage the ingress/egress routing rules for Kubernetes.
- Manage Kubernetes deployments and objects for high availability and scalability using horizontal pod scaler and resource management
Implemented Kubernetes manifests and helm charts for the deployment of microservices into K8s clusters. - Managed deployments in EKS managed Kubernetes, set up multi-node clusters, and deployed containerized applications.
- Created Ansible Playbooks to Deploy VMs and install components as per requirements.
- Deployed Prometheus with Grafana to monitor the Kubernetes cluster and configured alerts to fire when different conditions weremet.
- Splunk was utilized during troubleshooting to retrieve errors and abnormalities from the logs and to produce alerts and dashboards based on the needs.
DevOps Engineer/Linux System Administrator
Salesforce
Hyderabad, Telangana
04.2020 - 01.2022
- Manage Autobuild systems, Customer support, and Incident management processes.
- Address gaps in the service to continually improve Autobuild Control Plane services (hosted on the GKE cluster)
- Monitoring the provisioning issues with different cloud platforms like GCP, & AWS.
- Terraform modules have been created to provision cloud infrastructure in various settings.
- Utilized Kubernetes to control Docker containerization and orchestration.
- Identified Toil in frontline operations and Automated the processes. This increased reliability and time to market while at the same time reducing costs.
- Work with cross functional teams to ensure applications meet operational acceptance criteria.
- Installing Red Hat, CentOS, and Ubuntu on Physical, virtual, and AWS Cloud environments.
- Version up-gradation, Kernel up-gradation, patches, and updating packages on Red Hat/CentOS servers using RPM, YUM, and RHSM (Red Hat Subscription Management).
- Configuring and troubleshooting various services like Webserver (Apache), FTP, NFS, and NTP
- By using custom Ansible Playbooks to simplify and automate day-to-day server administration
tasks. - Performed day to day administration function, backup and restoration.
- Created and serviced administrator and user accounts on Linux-based systems, managing [Number] deployments
DevOps Engineer/Linux System Administrator
Tech Mahindra
Visakhapatnam, Andhra Pradesh
11.2017 - 03.2020
- Installing Red Hat, CentOS, & Ubuntu on Physical, virtual, and AWS Cloud environments
- Version up-gradation, Kernel up-gradation, patches, and updating packages on Red Hat/CentOS servers using RPM, YUM, and RHSM (Red Hat Subscription Management).
- Configuring and Troubleshooting of various services like Webserver (Apache) FTP, NFS, and NTP
- By using custom Ansible Playbooks to simplify and automate day-to-day server administration tasks
- Worked with the development team to resolve their blockers.
- Expertise in setting up SSH, SCP, SFTP connectivity between UNIX hosts. LDAP, sendmail, ftp, remote access, security
- Activities include user administration, startup and shutdown scripts, cron tabs, file system maintenance and backup scripting and automation using shell scripting for Red Hat Linux systems
- Experience in managing Ansible Playbooks with Ansible roles and creating inventory in Ansible for automating continuous deployment.
Linux Administrator
Netenrich Technologies
Hyderabad, Andhra Pradesh
03.2014 - 05.2017
- Production Server monitoring via SSH/console and resolving performance issues on servers.
- Customer Support for Linux applications via Online Chat, telephone, tickets, and Remote access
- Response to incident tickets and resolves them with SLA.
- Installing and configuring a Linux server.
- Coordination with Symantec/NetBackup for various backup related issues.
- Performed day-to-day administration functions, backup, and restoration.
- Expertise in setting up SSH, SCP, and SFTP connectivity between UNIX hosts. LDAP, sendmail, ftp, remote access, security management, and Security troubleshooting skills.
Education
Bachelor of Engineering Technology - Computer Science Engineering
Jawaharlal Nehru Technological University
Hyderabad05.2013
High School Diploma -
Diviseema Polytechnic College
Andhra Pradesh05.2010
Skills
- Operating System: Linux (RedHat, CentOS & Ubuntu)
- Version Control: Git, Github, Bitbucket
- Continuous Integration/Continuous Deployment (CI/CD) using tools: Jenkins, GitLab CI/CD, ArgoCD
- Build Tools: ANT, Maven
- Provisioning Tools: Terraform and CloudFormation
- Cloud Platforms: AWS, GCP, Azure
- Containerization: EKS, Docker, Kubernetes, Helm
- Scripting: Bash,Shell,Python
- Web server: Apache Web Server, Apache Tomcat, Ngnix
- Configuration Management: Ansible
- Monitoring and Logging: Splunk, CloudWatch, Prometheus, Grafana, ELK Stack, Nagios
- Security: Implementing security best practices and tools like AWS IAM, Vault
- Ticketing/Bug Tracking: Jira, Remedy, ServiceNow
- Virtualization: VMware, VCenter
Affiliations
- Certified Kubernetes Administrator (CKA)
- Red Hat Certified System Administrator (RHCSA)
- Red Hat Certified Engineer (RHCE)
Timeline
DevOps Engineer/Senior Linux Administrator/Deployment Engineer
ADP
02.2022 - 06.2023
DevOps Engineer/Linux System Administrator
Salesforce
04.2020 - 01.2022
DevOps Engineer/Linux System Administrator
Tech Mahindra
11.2017 - 03.2020
Linux Administrator
Netenrich Technologies
03.2014 - 05.2017
Bachelor of Engineering Technology - Computer Science Engineering
Jawaharlal Nehru Technological University
High School Diploma -
Diviseema Polytechnic College
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