Vishnuprasad Vetapalem

Wworking as devops engineer involving full python automation and devops tools (cicd,kubernetes,linux)

Provided24/7on-callsupportsforproductdeliveryplatformsandsystem/ApplicationTrouble shootingand problem. Performed Linuxadministrationacross L1, L2, and L3 levels, including installation, patching, user management,troubleshooting, and performancetuning. Experienceasa Linuxadministrator,withexpertisein installation,configuration,troubleshooting. Installedandconfigured linuxservers(RHEL) manually, including patching,diskpartitioning, softwarepackageinstallationand initialsystemsetuplikesystem hostname, networking,firewall rules, and useraccesscontroltoprepareserversforproduction Servermigrationfrom Rhel 7to Rhel8.x Expertlycreatedandformatted Linuxfilesystems(ext4,xfs,nfs)tomeetapplication requirements Skilled inextendingexisting logicalvolumesandfilesystemsusing LVMtoolstoincreasestorage Expertiseintroubleshooting networkconnectivityissuesinvolving DNS, SSH, SElinuxpolicy denials, userloginfailures, hardwarefaults, storageandfilesystemcorruptionsand resolving LVM inconsistencies, kernel panics ETC. Analyzingcrashdumpstoensuresystemand reliability. ExecutedAnsiblead-hoccommandsforreal-time Linuxadministrationtaskssuchasuser. Reduced manual intervention byrunningad-hochealthchecks(diskspace, uptime, services)on 100+ Linuxserverssimultaneously. management, packageinstallation, servicerestarts, and permissionchangesacrossmultipleservers. Installedandconfigured OpenShiftclustersonAWSandvirtualizedenvironments, aligningwith enterprisesecurityandcompliancestandards Setupauthenticationandauthorization (LDAP, OAuth, RBAC)forsecureandcentralizedaccess management. Configured networkpolicies, quotas, and limitstoenforceresourcecontrolandsecurityboundaries acrossnamespaces. Installedand managed Operatorstoautomateapplicationdeploymentsand platformservices. Troubleshotpodfailures, crashloops, andstuckdeploymentsbyanalyzing logs, events, andcluster health, networking issuesusing OpenShiftSDN and networkpoliciestorestoresecureconnectivity.

Administering large-scale OpenShift clusters in production, performing version upgrades, patching, and operator lifecycle management to maintain high availability (99.9% uptime). Implementing and monitoring resource quotas, limits, and namespace isolation to optimize resource utilization and prevent cluster resource exhaustion.

Troubleshooting critical cluster issues such as pod crashloops, stuck deployments, PVC/storage

failures, and network policy conflicts

Created and managed OpenShift projects (namespaces) to organize applications and control

access.

Implementing and monitoring resource quotas, limits, and namespace isolation to optimize

resource utilization and prevent cluster resource exhaustion.

Managed cluster health monitoring using Prometheus, Grafana, and OpenShift Web Console,

ensuring 24/7 availability.

Deployed and managed packaged applications in OpenShift using Helm charts for consistent and

repeatable deployments.

Performed OpenShift cluster upgrades (minor & patch releases) using the Cluster Version Operator

(CVO), ensuring smooth transitions with minimal downtime.

Managed the lifecycle of Kubernetes operators through the OperatorHub and OLM (Operator

Lifecycle Manager).

Deployed applications on OpenShift using oc CLI and web console, ensuring consistency across

environments.

Worked with resource manifests (YAML) to define and manage OpenShift objects (Pods, Services,

Routes, ConfigMaps, Secrets).

Managed application scaling manually and with Horizontal Pod Autoscaler (HPA).

Configured environment variables, secrets, and config maps to externalize application configuration

securely.

Documented upgrade procedures and best practices, contributing to operational knowledge base

and faster adoption