SUMMARY:

• Determined and diligent experienced certified RHCE professional with 8 years plus of Linux Administration with a strong performance background in variety of professional system support and solution - based IT services for Linux Systems administrations seeking an opportunity to utilize my skills in a professional capacity, employing comprehensive knowledge and professional experience.
• Linux servers: Red Hat Enterprise Linux 7,6 and 5, CentOS.
• Installation: HTTP, NFS, FTP, Kickstart
• Scripting: Bash, shell
• Experience with Sun Solaris, Windows operating systems.
• SAN Administration.
• Networking experience in TCP/IP, LAN, SAN, DNS, NFS, FTP, DHCP, SAMBA.
• Proven ability to understand and follow complex instructions to successful conclusions and be productive in a high volume, high stress environment.
• Ability to quickly learn and use new software/hardware.
• Communicating ideas clearly and effectively.

TECHNICAL SKILLS:

Virtualization: KVM, VMware ESXi

Troubleshooting: Wireshark, ping, tcpdump, telnet, netstat, netcat, nmap.

Network: firewalls, IDSs, IPsec, VPNs, iptables, tcpwrappers

Application: PGP, SSL, SSH, sudo

File System: SELinux, ACLs

Backup: tar, cpio, dump (ufsdump), amadmin

Office tools: Open Office, Star Office, MS office 2010/2007/2003

PROFESSIONAL EXPERIENCE:

Confidential, Chicago, IL

Linux System Engineer

Responsibilities:

• Monitoring and tuned the system to achieve optimum performance levels.
• Hardening Internet facing systems to provide maximum availability and security.
• Setup security using SUDO, TCP Wrappers, Firewalls etc.
• Performance monitoring of the servers and applications using TOP, FREE, VMSTAT, TCPDUMP & IOSTAT
• Job Scheduling using Cron.
• Monitoring system services using NAGIOS.
• Worked with configuring and troubleshooting NIS.
• Setup NFS, FTP, sFTP and Samba for File Sharing on Linux and Windows servers.
• Installed and configured various services like DNS, LDAP, DHCP, Send mail, Apache Web Server, NIS, SSH, Telnet, HTTP, RPM Package Management and others.
• Configuring servers to synchronize with the NTP Server.
• Supporting DEV, QA and Production on daily basis.
• Involved in configuring iptables firewall and hardening Linux systems for system security.
• Patching Red Hat Linux servers using YUM.
• Performed daily system monitoring, verify the integrity and availability of all hardware and server resources, and review system and application logs.
• Managed systems, processes, and procedures tied to day-to-day and long-term facility maintenance, repair, and operations.

Confidential, Chicago, Downtown

Linux System Engineer

Responsibilities:

• Performed standard system administration tasks, such as patching, software and hardware upgrades, troubleshooting and problem resolution.
• Installing and configuring various services like DNS, DHCP, NFS, Send mail, Apache Web Server, NIS, Samba, SSH, Telnet, http, RPM Package Management, Yum.
• Develop Linux/UNIX shell scripts to accomplish redundant tasks to simplify in distributed administration.
• Setting up and maintaining Domain Names System (DNS) servers.
• Implementation of advanced partitioning schemes like Software Raid and LVM.
• Creating users with root’s privileges and also users with limited root’s privileges called the sudo users.
• Disabling telnet and enabling SSH. Manually setting up sshd authorized keys.
• Creation and management of VM’s using KVM.
• Performed day to day Linux administration such as user accounts, logon scripts, directory services, file system shares, and permissions etc.
• Experience in configuring Emulex & QLogic HBA on RHEL along with dm-multipath and PowerPath.
• Setup NFS, Samba and FTP File sharing setup on Linux and Windows servers.
• Maintaining VMware ESX servers using VMware Virtual center
• Supporting web development and database teams for day to day operations
• Involving in VMware updates manager to install & Troubleshoot patches and updates on ESX hosts and virtual machines.

Confidential, Bedford park, IL

Linux System Engineer

Responsibilities:

• Installation of hardware, fiber cabling, network cabling.
• Evaluate performance of systems to see that they meet business needs.
• Install, upgrade and maintain Windows and Linux operating systems.
• Installation, setup and configuration of RHEL, CentOS, OEL and VMware ESX on HP and IBM hardware.
• Manage, install patches and other software packages using UP2DATE, YUM and RPM.
• Used different Unix commands to run, maintain, setup schedule work, protect and rescue file systems.
• Added, modified and/or deleted users and group’s account on local systems using tools and manual procedures.
• Created automated KICKSTART environment for RHEL standard builds for WEB, APP and DB servers.
• Setup NFS, sFTP and Samba File sharing setup on Linux and Windows servers.
• Setup and configured Apache in Redhat, Fedora and CentOS.
• Perform daily system monitoring, verify the integrity and availability of all hardware and server resources, and review system and application logs.
• Job Scheduling using Cron.
• Monitored Network services using NAGIOS.
• Setup, configuring and troubleshooting NIS and BIND.
• Set-up and support of servers in a high availability, heterogeneous Linux, Windows, and VMware environment with an emphasis on security and using well documented, automated installation and support procedures
• SAN Administration: configuration, creating RAID groups, maintenance, creating storage group and troubleshooting on EMC Clariion.
• Working experience in upgrading and configuring a variety of hardware including network cards, SCSI cards, HBA’s, copper and fiber cables, memory, drives, CPUs, backplanes

Confidential, Schiller park, IL

System Administrator

Responsibilities:

• Installed, upgraded and maintained Windows, Linux and Solaris operating systems.
• Installed, set up and configured RHEL, CentOS, OELand VMware ESX on HP and IBM hardware.
• Managed, installed patches and other software packages using UP2DATE, YUM and RPM.
• Used different Unix commands to run, maintain, setup schedule work, protect and rescue file systems.
• Added, modified or deleted user and group accounts on local systems using tools and manual procedures.
• Setup NFS and Samba File sharing setup on Linux servers.
• Setup and configured Apache in Redhat.
• Performed daily system monitoring, verified the integrity and availability of all hardware and server resources, and reviewed system and application logs.