11/18/2025 updated
100 % available
Linux Administrator | OpenShift Administrator | DevOps Engineer
Ongole, India
Only remote
B.Tech - ECEAbout me
Red Hat Certified Linux & OpenShift Administrator (EX280, RHCSA) with 4+ years of experience in cluster installation, operations, automation, and troubleshooting. Skilled in RHEL, Ansible, Kubernetes basics, L2/L3 support, and resolving critical production issues.
Secure Shell (SSH)Amazon Web ServicesAutomationCloud ComputingComputer NetworksContinuous IntegrationCorporate SecurityLinuxDevOpsFile SystemsDomain Name System (DNS)Network TroubleshootingLightweight Directory Access Protocols (LDAP)Linux AdministrationLogical Volume Manager
I am a Red Hat Certified OpenShift Administrator (EX280) and RHCSA-certified Linux Engineer with over 4 years of hands-on experience in managing, supporting, and optimizing enterprise-grade Linux and OpenShift environments. My expertise spans cluster administration, production support (L2/L3), automation, troubleshooting, platform engineering, and end-to-end operations across hybrid and cloud infrastructures.
OpenShift Administration & Operations:
Installation and configuration of OpenShift clusters on AWS, VMware, and bare-metal environments
End-to-end cluster operations: node management, operators, authentication (LDAP/OAuth), RBAC, resource quotas, and limit ranges
Expertise in resolving pod failures (CrashLoopBackOff, image pull errors), PVC/storage binding issues, deployment rollbacks, SDN/network policy conflicts, and node/resource pressure issues
Hands-on experience with Projects/Namespaces, Services, Routes, ConfigMaps, Secrets, ServiceAccounts, and YAML manifests
Cluster upgrades and patching using the Cluster Version Operator (CVO) and Operator Lifecycle Manager (OLM)
Deployment automation using Helm charts and Git-based workflows
Monitoring and diagnostics with Prometheus, Grafana, cluster logs, and oc adm tools
Linux Administration :
L2/L3 support for enterprise RHEL environments, including installation, patching, performance tuning, incident resolution, and OS-level troubleshooting
Advanced experience with LVM, filesystem management (XFS, ext4, NFS), disk provisioning, partitioning, and volume expansion
Strong troubleshooting of boot issues, kernel panics, dracut/initramfs errors, services failures, hardware faults, SSH/DNS issues, SELinux, and firewalld
RHEL 7 → 8 migration using Leapp, including pre-upgrade checks, package evaluation, risk analysis, and post-migration validation
Server hardening, security configurations, auditing, and compliance support
Experience with networking fundamentals, routing, DNS, firewalld rules, VLANs, and NIC bonding
Ansible Automation & Scripting:
Creation of Ansible playbooks and roles for automated configuration management, patching, deployments, and repetitive operational tasks
Large-scale automation for 100+ servers: user creation, permissions, package installations, service restarts, and environment configuration
Automated health checks (services, disk usage, uptime, performance)
Shell scripting for OS-level tasks and workflow automation
Troubleshooting & Production Operations
Experience handling P1/P2 critical incidents, RCA preparation, and providing stable resolutions
Strong diagnostics for container issues, storage failures, networking problems, authentication errors, and performance bottlenecks
Expertise in reading logs, auditing system changes, analyzing cluster events, and solving system/service outages
Knowledge of SRE/DevOps operational best practices, monitoring, scaling, and reliability improvements
Languages
EnglishFluent
Project history
Administering large-scale OpenShift clusters in production, performing version upgrades, patching, and operator lifecycle management to maintain high availability.
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)
Experience as a Linux administrator, with expertise in installation,configuration,troubleshooting. Installed and configured linux servers (RHEL) manually, including patching,disk partitioning, software package installation and initial system setup like system hostname, networking, firewall rules, and user access control to prepare servers for production. Migrations from rhel7 to rhel 8
Expertly created and formatted Linux file systems (ext4, xfs,nfs) to meet application requirements Skilled in extending existing logical volumes and file systems using LVM tools to increase storage Expertise in troubleshooting network connectivity issues involving DNS, SSH, SElinux policy denials, user login failures, hardware faults, storage and file system corruptions and resolving LVM inconsistencies, kernel panics ETC
Reduced manual intervention by running ad-hoc health checks (disk space, uptime, services) on 100+ Linux servers simultaneously. management, package installation, service restarts, and permission changes across multiple servers.
Installed and configured OpenShift clusters on AWS and virtualized environments, aligning with enterprise security and compliance standards
Configured network policies, quotas, and limits to enforce resource control and security boundaries across namespaces
Troubleshot pod failures, crashloops, and stuck deployments by analyzing logs, events, and cluster health, networking issues using OpenShift SDN and network policies to restore secure connectivity.