Nagam YellaReddy

• Administered and automated Linux/Ubuntu systems using Ansible, including service configuration, patching, and monitoring agent deployment.
• Integrated Ansible with Red Hat Satellite for automated patch management and system provisioning across hybrid environments.
• Working and involving multiple teams to plan and schedule the patch cycle management to ensure efficiency and effectiveness.
• Applying patches on Linux and cloud platform related servers on monthly cycles.
• Automated Pre-post checks Before & After patch apply to ensure safe patch updates.
• Monitoring System Health after patch completion using Prometheus, Grafana and Datadog.
• Maintain Pre-plan schedule to roll back patches if any failure occurs.
• Scanning & Hardening the servers using CCS and Qualys tools before deploying into the project to ensure the security of servers.
• Hands on experience in fixing the vulnerabilities as per the CVE id’s referred in the Qualys and CCS report.
• Provisioned and managed AWS infrastructure (EC2, VPC, IAM, S3) using Terraform, following Infrastructure as Code (IaC) best practices.
• Deployed containerized applications on Kubernetes using Deployments and Services; configured ClusterIP, NodePort, and LoadBalancer for traffic routing.
• Monitoring Cluster health Node status on AKS.
• Performing cluster upgrades, patching and version management.
• Monitored cluster health and application performance using Prometheus and Grafana dashboards; resolved basic pod-level issues.
• Used Git for version control of automation scripts and infrastructure code, implementing branching strategies and secure access via Personal Access Tokens.
• Configured and managed Jenkins pipelines to automate deployment workflows, integrating with Git and Ansible for CI/CD.
• Administered and maintained Checkmk Raw Edition for monitoring Linux, Solaris, and Ubuntu servers across production and staging environments.
• Implemented IAM roles and policies using Terraform to enforce secure access control.
• Integrated Checkmk with email alerting and escalation policies to ensure timely incident response.
• Troubleshot and resolved critical alerts related to system health, network connectivity, and application performance.
• Creating branches, tags and merging the source code between development branches.
• GIT Administration like creating users and giving GIT access to users etc.
• Performing deployments on different environments like Dev, Staging and Production environments in AWS cloud platform.
• Experience on creating dashboards in Grafana like JVM metrics, CPU, Disk usage and other metrics using different exports.
• Knowledge on Kubernetes logs collection using Grafana Loki.
• Hands-On experience in setting up CloudWatch Alerts for EMR components using terraform.
• Knowledge on state migration for the entire infrastructure using terraform.
• Worked with customers and set up complete monitoring from end to end using Prometheus and Grafana as per the requirement.
• Consultant Engineer, Client: Vodafone (Telecom Technology), Client: Nokia, Cisco (Networking related)

· Administered and maintained over 400 Linux servers (RHEL, Ubuntu) across production and non-production environments.

· Performed regular OS patching, kernel upgrades, and package updates using Ansible, YUM, and custom automation scripts.

· Designed and maintained Ansible automation frameworks for provisioning, patching, middleware deployment, and configuration drift correction.

· Configured, managed, and optimized VMware vCenter and ESXi hosts for high availability, resource utilization, and snapshot management.

· Monitored system health metrics and performed routine performance analysis.

· Troubleshot networking issues including DNS resolution, IP conflicts, and firewall blocking.