Monitored system performance and resource utilization to ensure optimal functioningFile system maintenance like responding to file system alerts, finding the file system usage and analyzing the highest offender and increasing file systems spacePerform incident analysis like process management, CPU and memory analysis to quickly recover from service interruptions, and to prevent recurring of issuesPerform and manage system backups and replications running on 3rd party backup solutions and through local RHEL tools (tarball, gzip, dd etc.)Experience with logical volume management (LVM), analyzing the disk usage and create disk partitionsImplemented automated patching and software updates, ensuring system security and compliance with regulatory standardsPerformed regular security checks to identify potential vulnerabilities and mitigate risksConfigured and maintained Linux-based firewalls and intrusion detectionsystems to protect against external threatsDeveloped custom scripts and tools to automate routine tasks and improveoperational efficiencyAutomated system provisioning and configuration management withAnsibleInstalling and configuring Linux operating systemsManage hardware, firmware and operating systemManage OS network (ping, ifconfig, netstat, tcpdump, etc)Services installation and configurationMonitor system logs, performance monitoring and capacity planning inanticipation of system resource usage and needsMonitored systems, networks and infrastructures using tools such as NagiosImplementation and Integration of NTP for time synchronization User files permission management including assigning, adding and updatingpermissions at the file and directory levelManage, monitor and test individual and group user access privileges andsecurityUpgrade Linux serversConfigured and maintained high-availability clusters for shared servicesWork with Service Desk teams to quickly resolve high impacting incidents