SUMMARY

• Over 8 years of experience in administration of installation, Configuration, Management of Linux OS (RHEL,CentOS).Experience in installation, Configuration, Patching, Upgrades, Monitoring System Performance, System and Network Security and Troubleshooting of Linux Servers. Strong understanding of infrastructure automation tool using Ansible.
• Worked in infrastructure team on installation, configuration and administration of Red Hat Linux RHEL 5.x/6.x/7, CentOS 5.x/6.x/7. Implemented day - to- day tasks in Red Hat Linux include upgrading RPMS, kernel, configure SAN disks, Multi patching and LVM file system.
• Day to day administration of the Development environment and Production and Test environment systems, 24/7 on-call support .

TECHNICAL SKILLS

• Linux System Administration (Red Hat), Vulnerability management, Performance monitoring
• Scripting, VMware, Server Migrations, Automation, Nagios, LVM, FTP, SSH, SCP, Cron
• Kernel Tuning, User management, Network Troubleshooting, LAN, WAN, TCP/IP, UDP, DNS
• DHCP,VLAN, Disk management,GIT, DOCKER, AWS
• HP, Dell Servers, Desktops, Printers, Cisco Switches, Routers

PROFESSIONAL EXPERIENCE

Confidential, New York, N.Y

Linux system Engineer

Responsibilities:

• Experience in Setting up and configuring install Server, Configuration Server and Boot server for Jumpstart, and Kick start process to install OS on Several workstations
• Installing new/rebuilding existing servers which support infrastructure (NIS, NFS,PXE boot, Kickstart file Servers, DNS, Netbackup and print Servers)
• Configuring hardware. services, settings, directories, storage, etc. in accordance with company standards
• Experience in kernel tuning parameters, hardware upgrades, and resource optimization as required, Configuring CPU, memory, and disk partitions as required installing and configuring Ansible. used ad-hoc commands to actively manage multiple services, installing and modifying several packages using ansible modules. writing and deploying various playbooks
• Experience in Red Hat Enterprise Linux and VMware infrastructure administration, troubleshooting and performance tuning
• Installing of ESXI hypervisor Servers, vSphere clients and vCenter Servers write Scripts in Bash for performing automation of various task
• Backup & Recovery system performance monitoring kernel tuning, debugging OS failure
• Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in Linux
• Package management using RPM, YUM and to update in Red Hat Linux
• Configured yum repository server for installing packages
• Decommissioning of Physical and virtual Linux servers
• Troubleshoot and monitor various performance related issues using performance monitoring utilities as TOP, net-stat
• Creating/modifying host-based firewall rules using IP TABLES creating the file systems using Red Hat volume manager and performing the health check o regular basis for all Linux servers
• Experience in Redhat 7 migration project, which includes migration of hundreds of servers from RHEL 6 to RHEL 7, building and configuring VMs needed for the migration project
• Configured VMware workstations and installed several Linux and Windows Operating Systems according to the client needs. Also involved in maintenance and Troubleshooting of VMware issue
• Installation and upgrade of packages and patches configuration management, service pack & reviewing network connectivity issues managed software packages on Redhat Linux servers using RPM & YUM implemented NFS, AutoFS, FTP, DNS, DHCP for administrative and project requirements as well SAMBA server for windows and Linux connectivity
• Hands-on utilization for Ansible Playbooks to simplify and automate day-to-day server administration tasks
• Configured VMware virtual machines through templates and clones on a daily-basis in Production and Dev environments.
• Experience with AWS cloud Platforms EBS, EC2,S3, load balancer
• Created Docker containers, performed life cycle management including monitoring, maintaining and troubleshooting Docker images.

Confidential

Linux System Administrator

Responsibilities:

• Implementations of PXE boot with kickstart FTP, DHCP, TFTP servers to automate the process of OS installation.
• Expertise in provisioning multiple bare metal servers with RAID 0, 1, 5 and 10 Levels.
• Involvement of synchronization of NTP servers for multiple environments such as Production, Dev, UAT etc.
• Efficiently managed storage for multiple Linux RHEL / CentOS servers by utilizing LVM resources such as extending, reducing and managing partitions.
• Adding users according to ticket requirement and mounting the fie system, cron jobs adding etc. in Red Hat Linux
• Performed User/Group Account Administration, implemented password aging, monitored logins
• Experience in managing various network related tasks such as TCP/IP, NFS, DNS, DHCP, and SMTP, TFTP, FTP
• Install, configure, compile to maintain open source applications and documents process and procedures
• Experienced in manually configuring and deploying virtual machines with respective O.S on Hyper-V.
• Automated deployment as per plan through pxe boot
• Developed and executed Bash scripting which automated and streamlined companywide business functions. Maintained firewall (IPtables) policies
• Configuring and managing network interfaces
• Manage installation, configuration, upgrade and patch systems running OS such as Red Hat, CentOS
• Monitor system activities like CPU, Memory, Disk and Swap space usage to avoid any performance issue
• Software packages and patch administration, involving and removing software packages and updating patches
• Installing and configuring Apache, Web-server and supporting them on Linux production servers

Confidential, Chicago, IL

Linux Systems operator

Responsibilities:

• Monitored all platform components including remote locations and responded to critical system problems to minimize service unavailability
• Create, configured, diagnosed user and group permissions to facilitate System security.
• Granting root permission to users by configuring SUDO rights, for performing certain activities
• Setup a cron jobs for backups and monitoring processes
• Installation, up gradation of packages and patches configuration
• Performed systems routine backup, scheduling jobs by setting up cron jobs
• Troubleshooting main system relative issues such as application related issues, network and hardware related issues etc
• Perform user management tasks include adding users, configuring volumes, creating filesystems, configuring various system services, configuring software firewall
• Experience in file system administrator, resolving system errors, crashes and file system error.

Confidential

Data Processing Officer

Responsibilities:

• Established whole Management Information Systems (MIS) Department during Plant Erection of Deharki Sugar Mills (Pvt.) Ltd.
• Direct reporting to Chief Operating Officer (Resident Director) .Planned, Designed, Installed & Implemented Complete Fiber Optic, UTP Cable, Wi-Fi based LAN, WAN (60 to 80 Computers) of Deharki Sugar.
• Managing, Backup & Recovery of running database software.Managing Windows (DNS, Proxy, DHCP, ISA and SQL server 2000) servers.
• Troubleshooting of complete Hardware & Software Problems.
• Sound knowledge of WAN technologies such as PPP, Frame-relay, dedicated T1s, ISDN and Routing Protocols: OSPF, EIGRP, IGRP, RIP and RIPv2
• Familiar with the setup and basic configuration of Cisco 2950, 2960 Switches
• Implementation of HSRP, DHCP, DNS, FTP, TFTP, MRTG