Competent professional with 3.7 years of experience in System Administrator, Linux Engineer andProduction support SQL/Linux.Remote LINUX System Administration for Red Hat Linux in 24x7 support services.We support Cloud -based and remoted infrastructure for complex enterprise applications.Knowledge of ELB, Cloud Watch, S3, SNS and SQS.Monitoring system performance, managing users/groups, scheduling jobs, and filePermissions.Applying patches, installing software, and resolving server down alerts promptly.Configuration of web servers, NTP servers, and handling auto/user-generated tickets.Collaborating with vendors/hardware teams and coordinating issue resolution.Monitored System Performance: Virtual memory, Disk utilization, CPU utilization.Managed user and group accounts, setting up user work environments.Scheduled automated tasks using Crontab and granted access to application users.Managed file permissions, including special permissions like sticky bit and Set UID/GID.Administered and monitored various processes, including start/stop/kill operations.Applied patches, installed software, and upgraded systems for optimal performance.Responded to server downtime alerts promptly, ensuring quick resolution.Configured YUM client/server and created logical volumes, file systems.Monitored file system usage, checked, and repaired file systems as needed.Configured virtual hosts in the APACHE web server and maintained NTP server.Collaborated with vendors, hardware teams, and owners for issue resolution.Diagnosed and resolved issues related to DNS, APACHE, and network problems.Managed database troubleshooting, hard disk drives, and disk partitioning.Troubleshot various services like SSH, FTP on Linux (Ubuntu, Red Hat).Launching AWS EC2 instances as per the customer’s need.Administered user and group settings, DNS, NFS, NTP, SMTP, FTP, SSH, SCP.Conducted day-to-day VMWare and Linux troubleshooting.Deployed and managed application servers, performed system monitoring.Managed users, permissions, log file analysis, and application troubleshooting.