Karthick Kumar

9+ Years of Experience on Linux Admin.
Troubleshooting and supporting Multiple Data Centers. Team member in Platform/Infrastructure team.
Worked on Kernel Patching and Kernel parameter tuning, OS Recovery and multipath disk allocation using Hitachi and EMC power path in Linux.
Troubleshooting on various issues such as NTP, NFS Server/Client, LVM, SSH, SAN and NAS storage allocation on various servers, AD DNS, Mail server, SFTP, Clear Alerts from monitoring tool, Server Builds, AD Windows User/Group and password administration.
Good Knowledge of Redhat Linux Cluster, OS Upgrades.
Knowledge of Problem, Change & Incident Management.
Expertise in Patch Management & Vulnerability Fix.
Knowledge on AWS - EC2, S3 & Admin tasks etc.
VMware Administration, Esxi Server installation and configuration which includes Server Deployment using Template, Datastore and Network Configuration Vlan Addition, NTP Configuration, DRS,HA, Vmotion etc
Handling of system performance issue using SAR, inode and file system issues
Providing Root cause analysis (RCA) and Corrective Measure (COCM) to escalation team.
Working with the various vendors and across the team such as DB, Network, Application and Storage team to troubleshoot the issue.
Used Bash Shell scripting to automate the routine Linux administration tasks.
Used Powershell scripting to automate the VMware task on vCenter.
Held responsible for Support On call on 24*7 Environment by Leading a team