Technical Skills

• Operating Systems: RHEL 3/4/5/6, Solaris Release 2.10/2.9/2.8/2.7, IBM-AIX 5.X, HP-UX, Windows 98, Windows 2000 and NT.
• Hardware: HP Proliant, Blade servers, Sun Servers E450, E3500, E4500, E5000, E6500, E10k, E15k, E25k, Sun Ultra's, V210, V280, V490, V880, V6800 SUN Ray 1g Ultra Thin Client SUN Desktops SPARC 10, 5 , DMX3 and DMX4 Storage Arrays, F5, HP 9000, HP Net Server L series.
• Software: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP, and tcpdump.
• Cluster Environment:PRofessional summary

Confidential

Unix/Linux Administrator

Responsibilities

• Administration of RHEL and AS 4, 5, 6 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Installation, configuration, administration of Solaris 9, 10 on SPARC based servers using Jumpstart.
• Creating, cloning Linux Virtual Machines, templates using VMware Vsphere 4.0 and migrating servers between ESX hosts.
• Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Installing and upgrading HPUX on HP PA-RISC and Itanium Servers 5 on HP DL 380 G3, 4 and 5 Dell Power Edge servers.
• 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.
• Worked on HP-UX servers in an MC Service Guard high availability cluster.
• Experience working with HP LVM, creating physical, volume groups, logical volumes both physical and SAN disks.
• Installation and deployment of a Red Hat Network Satellite Server 5.4.1.
• Installed and configured GNUPG to encrypt file and ftp to remote ftp server.
• 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.
• Provision operation system in Logical Domain Manager LDOM v 1.2 and provisioning resources to the logical domains.
• Creating policies, jobs in HP Opsware, deploying them on linux, windows, solaris servers.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager Solaris Volume Manager. File system Tuning and growing using VERITAS File System VxFS , coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• 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.
• Worked on E-commerce based application products related to Internet marketing, credit card transactions, inventory management.
• 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.
• Designing 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.
• Developed automated processes that run daily to check disk usage and perform clean up of file systems on UNIX environments using shell scripting and CRON.
• Adding servers to the domain and monitoring them using spectrum, sitescope, cacti.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Installing, configuring Weblogic 10.3, Apache and integrating them.
• 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 .
• Installation and configuration of VxVM 5.0 and creating disk groups, volumes, increasing volumes.
• Administered SMTP and DNS infrastructure Sendmail 8.14 and BIND SPLIT DNS version 9.6.1
• Excellent documentation skills and instrumental in creating runbooks, presentations and infrastructure documentation

Environment: Red-Hat Linux Enterprise servers HP Proliant DL 585, BL 465/485,ML Series, SAN Netapp , BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, Jboss 4.2, JDK 1.5,1.6, ,VMware Virtual Client 3.5, VMware Insfrastructure 3.5.

Confidential

Linux/Unix Administrator

Responsibilities

• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Performed capacity analysis, monitored and controlled disk space usage on 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, Perl automation scripts.
• Creating virtual machines using Xen and deploying OS, managing hardware.
• Creating, installing, Weblogic Application servers, deploying WAR, JAR files on them installed on both Linux, Solaris servers.
• Worked with project manager and auditing teams to implement PCI, SOX compliance.
• Jumpstarting Solaris 9, 10 on Sun servers, configuring servers. Configured/Maintained Zones, LDOMs, ZFS file system Sun Solaris 10 Servers.Management and monitoring of various services using Service Management Facility and Service Administration.
• 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.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.