SUMMARY

• Team player with good management, analytical, communication and interpersonal skills.
• Over 9 years of experience specialized in System Administration working on Redhat Linux, SUSE Linux, Cent OS.
• Administering, Installation, Configuration, Backup, Recovery, Maintenance, Support Linux.
• Experience in Installing, upgrading and configuring RedHat Linux 5.x, 6.x using Kickstart Servers and Interactive Installation.
• Expertise in scripting for automation, and monitoring using Shell & Python scripts.
• Worked with Database administrators to tune kernel for Oracle installations.
• Experience in installing, configuring and implementing the RAID technologies using various tools like LVM, VxVM and Solaris volume manager.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Redhat Linux.
• Installation and upgradation of Packages and Patches configuration mgmt, version control, service pack & reviewing connectivity issue regarding security problem.
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, sendmail, ftp, remote access, security management and Security trouble shooting skills.
• Experience in administering VMware Infrastructure Client 3.5 and vSphere 6.0. Creating Linux Virtual Machines using VMware Virtual Center.
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Experience working in SAN environment like EMC Symmetrix.

PROFESSIONAL EXPERIENCE

Confidential, New York, NY

UNIX/App Support Admin

Responsibilities:

• Administration of RHEL and AS 5, 6, 7 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Vsphere 5.5 and migrating servers between ESX hosts.
• Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Implemented Python scripts for active monitoring of applications and to raise automated tickets.
• RPM and YUM package installations, patch and other server management.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked and performed data - center operations including rack mounting, cabling.
• Installation and deployment of a Red Hat Network Satellite Server 6.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Troubleshoot various systems problems such as application related issues, network related issues, hardware related issues etc.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Gathering requirements from customers and business partners and design, implement and provide solutions in building the environment.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage on 2, 3, 4 node clusters.
• Implementing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Installation and configuration of VxVM 5.0 and creating disk groups, volumes, increasing volumes.
• Coordinated with the Storage, Network and Hardware teams on server provisions (HP Proliant DL385/585 G5, G6 servers, and HP BL 465C G5 blade centers).
• Adding servers to the domain and monitoring them using spectrum, site scope, and cacti.

Confidential, New York, NY

UNIX Administrator

Responsibilities:

• Installation and administration of RHEL 5.0/6.0 and Cent OS 6.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine-tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• Responsible for maintenance of development tools and utilities and to maintain shell automation scripts.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• Fine tuning of Servers and configuring networks for optimum performance.
• Organized various meetings with teams as mentioned above for tracking their requirements as inputs to get this done and designed the plan/steps involved and took user approvals.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.

Confidential, Parsippany, NJ

Systems Administrator

Responsibilities:

• Involved in Building and configuring Red Hat Linux Servers using Kick Start server as required for the project.
• Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Primary responsibility includes building and supporting Solaris/ Redhat Linux 4, 5 servers.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, BEA Web logic etc.
• Extensive use of Bash shell for scripting.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Regular disk management like adding / replacing hot swappable drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Worked with other IT teams, customers (users), and other managers in helping build and implement systems and standards.
• Involved in migration of projects from one flavor to another one.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.

Confidential

Linux Administrator

Responsibilities:

• Installation and administration of RHEL 4.0/5.0 and SUSE 10.x.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Installation of packages, patch management, volume management on Suse servers using YaST.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine-tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• Expertise in VMware vSphere 3/4/5 version ESXi and vCenter operations Management.
• Installed, configured, cloned VMs on VMware 5, Vsphere 4.0, configured ESX hosts, adding data stores to ESX hosts, creating vswitches, templates, migrating VMs across ESX hosts.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.

Confidential

Operations & Support

Responsibilities:

• Installation, Configuration, Upgradation and administration of Sun Solaris, RedHat Linux.
• User account management and support.
• Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
• Responsible for configuring and managing Squid server in Linux.
• Configuration and Administration of NIS environment.
• Log file was managed for troubleshooting and probable errors.
• Responsible for reviewing all open tickets, resolve and close any existing tickets.
• Document solutions for any issues that have not been discovered previously.