SeniorAdministrator - Linux, Red Hat Cluster, Red Hat Satellite

About the Role

SeniorAdministrator \- Linux, Red Hat Cluster, Red Hat Satellite Noida, Uttar Pradesh **Job Summary** --------------- The Linux L2 Engineer is responsible for advanced administration, troubleshooting, and optimization of Linux systems across on\-premises and cloud platforms. The role includes owning complex incidents, driving automation, ensuring system reliability, and supporting hybrid infrastructure services integrated with storage, cloud, virtualization, and enterprise tooling. **Key Responsibilities** ------------------------ Perform advanced administration of Linux servers (RHEL, CentOS, Ubuntu) in enterprise environments. • Handle L3\-level troubleshooting for OS, CPU, memory, disk, kernel, and performance issues. • Manage OS patching, upgrades, kernel tuning, and image lifecycle. • Perform server provisioning, decommissioning, and configuration management. • Own and resolve P1/P2 incidents related to Linux systems. • Perform root cause analysis (RCA) and implement preventive actions. • Support change, release, and configuration management processes. • Proactively monitor system performance and ensure availability. • Analyze CPU, memory, IO, filesystem usage and optimize system performance. • Implement proactive measures and automation for self\-healing systems. • Support Linux workloads on AWS and OCI, including: o VPC, networking, load balancers, storage (ZFS, EBS\-like services) o Monitoring and alerting • Manage Linux\-based workloads on IaaS and PaaS platforms, including container hosts. • Build and support infrastructure provisioning using Terraform (IaaS). • Develop automation scripts (Shell/Python) for operational efficiency. • Support Kubernetes\-based platforms (SRE/PRE scope). • Manage and troubleshoot container host environments. • Support Linux integration with NAS solutions such as Nasuni Filers. • Monitor filer health, cache utilization ( **Skill Requirements** ---------------------- Operating Systems: RHEL, CentOS, Ubuntu • Core Linux Skills: • LVM, filesystem management, systemd, networking • Kernel tuning, performance troubleshooting • Scripting \& Automation: Shell scripting, Python • Cloud Platforms: AWS, OCI • Infrastructure as Code: Terraform • Containers: Kubernetes, Docker • Monitoring Tools: Nagios, Prometheus, CloudWatch, OEM tools • Storage \& NAS: Nasuni, NFS, CIFS • Virtualization: VMware (basic integration knowledge) **Other Requirements** ---------------------- Experience in hybrid cloud environments (on\-prem \+ cloud) • Exposure to DevOps/SRE practices • Knowledge of configuration management tools (Ansible, Puppet, Chef) • Familiarity with enterprise backup solutions (Dell ABS, Data Domain) • Understanding of networking concepts (DNS, TCP/IP, firewall basics) • Experience in event correlation and monitoring optimization Hands\-on with: \\\\\\\\r\\\\\\\\n• VMware Aria Operations (vROps), Aria Automation, Log Insight\\\\\\\\r\\\\\\\\n• Dell VxRail / PowerEdge infrastructure\\\\\\\\r\\\\\\\\n• Storage (vSAN, NAS, Dell Unity, ZFS – basic integration)\\\\\\\\r\\\\\\\\n• Lifecycle Manager (LCM), patching \& upgrades\\\\\\\\r\\\\\\\\n• Monitoring \& alerting tools (Datadog, SolarWinds, etc.)\\\\\\\\r\\\\\\\\n• Basic scripting: PowerCLI / PowerShell\\\\\\\\r\\\\\\\\nPreferred Skills\\\\\\\\r\\\\\\\\nExperience in: \\\\\\\\r\\\\\\\\n• Hybrid cloud environments (AWS, OCI basics)\\\\\\\\r\\\\\\\\n• Terraform / Ansible automation\\\\\\\\r\\\\\\\\n• Backup tools (Data Domain, Veeam, Commvault)\\\\\\\\r\\\\\\\\n• Security \& vulnerability remediation (Qualys, patching cycles)\\\\\\\\r\\\\\\\\n• Familiarity with: ITIL processes \& ServiceNow\\\\\\\\r\\\\\\\\n