OBJECTIVE

• Seeking an UNIX System Administrator position to support an enterprise infrastructure.

SUMMARY

• Over 9 years of experience specialized in System Administration working on Redhat Enterprise Linux 4.x, 5.x, 6.x, Oracle Solaris 8, 9, 10, and Cent OS.
• Experience in Installation, Upgrading and Configuration of Linux using Kickstart servers & Solaris using Jumpstart Servers, and Flash Archives.
• Installed Firmware Upgrades, kernel patches.
• Performed systems configuration, performance tuning & performance monitoring.
• Experience with virtualization - VMware vSphere.
• Implemented High Availability Clusters.
• Experience with Capacity Planning
• Experience working on configuration management & version control tools.
• Experience with LVM (Logical Volume Manger) with RAID storage arrays, SCSI, SSA devices.
• Configured NIS, NIS+, DNS, DHCP, NFS, LDAP.
• Automates administrative tasks with python & shell scripts.
• Provided operations support - Level 2 & 3 (including off hours on-call).

TECHNICAL SKILLS

Operating Systems: RHEL 6/7, Solaris Release 2.10/2.9

Virtualization: VMware - vSphere 5.x, ESX/ESXi 5.x, vCenter, vSphere Client

Hardware: HP ProLiant, Blade servers, Sun Servers E450, E3500, E4500, E5000, E6500, E10k, E15k, E25k, Sun Ultra’s, V210, V490, V880, V6800 SUN Ray (1g Ultra-Thin Client).

Network Protocols: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, TCP/IP, and tcpdump.

Cluster Environment: Sun Cluster Servers 2.2, 3.1, 3.2 and VERITAS Cluster Servers 4.1.

Monitoring Tools: BMC performance, Cacti.

Scripting Languages: Shell, Python

PROFESSIONAL EXPERIENCE

Confidential, NYC

Unix/Application Support Administrator

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.
• Installed RedHat Linux using kickstart and applied security polices for hardening the server.
• Installation, configuration, administration of Solaris 10, 11 on SPARC based servers using Jumpstart.
• Creating, cloning Linux Virtual Machines, templates using VMware vSphere 5.5 and migrating servers between ESX hosts.
• Installation and deployment of a Red Hat Network Satellite Server 6.
• Adding servers to the domain and monitoring them using cacti.
• RPM and YUM package installations, patch and other server management.
• Worked with LVM - volume groups, logical volumes on both physical and SAN disks.
• Performed file system tuning, Allocated SAN storage Disk Dynamic Multi path.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• 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).

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.
• Creating profiles manifests for new servers, and pushing them to servers using puppet.
• Responsible for maintenance of development tools, utilities and automation scripts.
• Creating virtual machines and deploying OS, managing hardware.
• Troubleshot production issues, updated incidents with root cause and resolution.
• Fine tuning of Servers and configuring networks for optimum performance.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user, and group quota.

Confidential, Parsippany, NJ

Systems Administrator

Responsibilities:

• Built and configured RHEL Servers using Kick Start server.
• Maintained maximum uptime for Enterprise Production, QA, and UAT/Staging.
• Planned, scheduled and Implemented OS patches on Linux servers as a part of proactive maintenance.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, H/W and S/W RAID, multipath, file systems, network.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, IBM WebSphere etc.

Confidential

Systems 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.
• 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.
• Automation of jobs through crontab and autosys.
• User account management and support.