PROFILE:

A System Administrator/Engineer with almost 8 years of experience specialized in Network Administration and Application Support on Red hat - Linux, Solaris, SUSE Linux and Windows environments.

TECHNICAL SKILLS:

Languages: Shell, Perl, Python Scripts, Cobol, C, C++, Visual Basic, Java, J2EE

Databases: Oracle 8i/9i/10g,11g,12c, MySQL(phpMyAdmin), PostgreSQL(phpPgAdmin)

Mail Servers: Postfix, Dovecot IMAP, SASL, PostgreSQL (Virtual mail box), Ruby on Rails

Web Server: Apache2/Tomcat, JBoss, IBM-Web sphere

Hardware: IBM RS/6000, pSeries, HP Server 9000/800 Series, Workstations 700 series, Dell Power Edge 1300/1500/6650/2650/2950 Servers,Dell R600, 700 and 800 series, Oracle T3,T4,T5 series, M500, M8000 series, Rack servers, Infotrend Eonstor DAS, EMC CLARiiON SAN, NAS Storage Box, Supermicro 6015B-3R & 8045C-3R, F5 system, Cisco MDS 9000 SAN switch, HP Blade

Virtual Server: VMware ESX 3.5.0 Server, VMware Infrastructure Client 2.5 & Xen 3.2

Other tools: Eclipse, Nagios, IPMI, CUPS, DNS(BIND), DHCP, Samba, Firewall (Squid, IPTables), FTP, NFS, NIS, KickStart, rsync, TOAD, SSH, Cronjob, openLDAP, apt-get, yast, yum, Bugzilla, RAID, SVN, CVS,GIT,N1

PROFESSIONAL EXPERIENCE:

Confidential, SF, CA

Sr Linux/Solaris Administrator

Responsibilities:

• Experienced with the automating the provision of OS by using WFnative Jump start tool (WAN Boot, PXE Boot) for all OS
• Installed and configured Solaris (9, 10, 11), Linux (5.x& 6.x),VMware ESX (4/5) and Windows (2008 R2)
• Built Virtual environments using VMware ESX Server 4/5 in Linux and Windows on HP-DL380 series, Dell R610, 620,710,720 & 820 series
• Built Global, local (whole root zones) on oracle T3-2, T4-1,T4-2,T4-4 and T5 series and physical domains on M5000 and M8000 series
• Involved in maintenance of systems including patching, setting up Print servers, Configuring File systems, using LVM/Veritas on Linux and ZFS for Sun Solaris OS, involving SAN environment along with veritas cluster installation and vxfs.
• Performed installation, upgrades, patching for Linux on Dell servers (R620s, R720s & R820s) and Solaris on SPARC (T5 & T4 series) along with providing installation guides.
• Wrote Install guides for all the environments and worked with application and build teams in finalizing the guides based on the platform.
• Upgraded Solaris 9 and Solaris 10 machines to Solaris 11 on T5-2 servers using native patching.
• Worked on deployment tools such as N1, GIT and monitoring tools such as Wiley Introscope.
• Performed POC testing for Split LDOM model on Solaris 11.
• Performed POC for VAS authentication for Red Hat 6.x systems
• Assisted in the POC for Oracle Enterprise Manager (OEM) v12c
• Performed POC testing for Global File system (GFS2) for Red hat clusters.
• Automating cron and other day-to-day activities using SHELL scripting.
• Tested the functionality of Solaris 10 local zones on Solaris 11 global zones.
• Tested the validity of the native Authentication system VAS (DELL) in both Linux and Solaris environments
• Racked, Installed REDHAT LINUX AS 5.4, SSE LINUX 9/10, configured them and their ILO.
• Implemented Virtualization using VMware ESX Server 3/4/5 in Linux on HP-460C Blade, HP-DL58, IBM-z/VM series and Dell-2950.
• IP Networking and Sub netting and also involved in bonding in Linux servers.
• Supported and troubleshot the LAN for each customer. This was to include configuration of server routing tables and NIC configurations.
• Worked with NFS, DHCP, SAMBA, HTTP, FTP, SMTP,PXE BOOT and HP Service Center.
• Implemented SNMP on devices to allow for network management and monitoring
• Monitored the hardware daily in Insight Manager for all the nodes in the environment and worked with vendors for issues with hardware.
• Maintaining SUSE Enterprises Linux 10, and RED Hat Linux 5 servers in development, test and Production environment and proactively monitoring and administering production and development servers.
• Monitored and configured additional paging space, file system expansion
• Architected server complex to ensure security, stability, and reliability under highly volatile usage.
• Responsible for setting up hardware and bandwidth contracts to facilitate rapid scaling.
• File system Administration, Setting up Disk Quota, configuring backup solutions on SAN/NAS storage
• Upgraded REDHAT LINUX from 3.9 to AS 5.4 on 41 PROD nodes successfully.
• Involved in applying new patches and packages for Solaris and Linux Servers and handled issues arising out of them.
• Managed version control, meshed backups with ITs backup scheme using Unix shell scripts and cron
• Wrote Bash and K shell SCRIPTS for deploying SSH KEYS, Automate Post installation things in LINUX, maintain the systems by keeping some scripts in Cron jobs.
• Responsible for Websphere and Weblogic application shutdown and restart
• Solved many tickets related to User creation, Accesses, Permissions, file system creations and enable and removing monitoring for file systems.
• Worked as On Call support for 400 node environment on a rotation basis for a week in a month for 24X7 hours.
• Patched all the HP-UX environment with DEC 2010 patches as the part of proactive patching in the environment also patched LINUX servers.
• Deployed latest patches for, Linux and Application servers, performed Red Hat Linux Kernel Tuning
• Wrote Technical documentation for various projects and worked with Technical writer to finalize the documents.
• Collaborated on AS/400 GUI Client/Server publishing applications.
• Created users, manage user permissions, maintain User & File System quota on Redhat Linux, SUSE and Solaris.
• Was involved in preparation of technical design specifications, installation and configuration of RED Hat Linux and Solaris Servers.
• Worked with Clustered nodes in upgrading OS, Applying Patches, Updating application, Removing applications.
• Audited the servers after the installation and prepared documents.
• Worked on EMC disk storage to allocate disk space.
• Worked on VEA, VCS, SNMP upgradation, VERITAS MP2 upgradation and issues involving in them with Symantec.
• Monitored server and application performance & tuning via various stat commands (vmstat, iostat, prstat, prtconf, prtdiag, iostat, dmidecode, sar etc) & tuned I/O, memory etc.
• Installed and Configured HP-UX 11.23 from IGNITE server and Installed VCS and VxVM on them.
• Implemented application on development, test, break-fix and production application server BEA Weblogic.
• Perform trouble shooting on Web application like Websphere and Weblogic.

Confidential, DAYTON, OH

Linux/SolarisSystem Administrator

Responsibilities:

• Performed installation, configuration and maintenance of Redhat Linux 4.x, 5.x.
• Experienced in Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX
• Configuring DNS, DHCP, NIS, NFS in Redhat Linux other Network Services.
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc
• Installed of all the required Software, patches, documentation, licensing trouble shooting.
• Network Monitoring Using Nagios and Tivoli tool
• Setup of full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, and print servers to insure optimal networking, application, and printing functionality
• Handling HP and DELL servers running on Redhat Linux and SUSE Linux 9/10.
• Problems and performance issues; deployed latest patches for Linux Application servers,
• Performed Red Hat Linux Kernel Tuning for TCP stack. Installation Red hat Linux 8, 9.0 on Dell, Proliant, and Enterprise Server 4.0
• Automated repetitive tasks using bourne shell scripting on HP-UX 11i, SLES9, and AIX
• Design and test a Disaster Recovery solution for all business critical applications and systems, including AIX, Linux and Solaris systems.
• Created Veritas (vxfs) filesystems, establishing disk groups and maintaining the overall online storage management environment (SAN)
• Building, administering, monitoring and troubleshooting IBM AIX 5.1, 5.2, 5.3, RHEL 4.x/5.x, Windows 2000/2003 servers on P-Series, Dell and Compaq hardware platforms.
• Kernel tuning on Linux and Solaris systems for Oracle installations.
• Patching up the system to the latest version as per the recommendations.
• Worked with DBAs to configure File Systems, users and group for Oracle Database on Linux servers and performed health check on various instance type from production, to development and test.
• Setup various user profiles, environment variables/security to ensure smooth operation.
• Good understanding of web services software architectural and design issues.
• Monitored overall system performance, performed user management, system updates and disk & storage management.
• Responsible for installing and configuring Weblogic 5.1, 6.1, 7.0 in Red Hat Linux
• Production support of Apache IIS and JBoss including installation, configuration, management and troubleshooting
• Used smitty (AIX) tool for Printers, Applications, Processes, Services, Software License Management, Software Installation, Users and Security Management
• Installed and configured Sudo for users to access the root privileges
• Performed troubleshooting of CPU bottle necks, memory bottle necks and gave suggestions on performance improvements.
• Tuned scheduler algorithms using Schedtune to fine tune priority formulas.
• Password policies which involves designing of PAM policies, testing of the policies and implementation
• Designing of Sudo policies, testing and implementation
• Designing of rules like disabling of root logins, enabling of session Timeout
• Updating of Kernel and security patches
• Prepared project plan for OS upgrade & Server Configuration Update
• Build new servers using kick start through ( iLO)RIB remote installation, EMC Power path for SAN, HP Data Protector(DP) installed and configured for taking Backups, PSP for HP Hardware monitoring, and post build scripts (like PCI compliance) using BigFix and finally checking System Build Checklist
• Proactively Investigated and resolved for Server Kernel Panic issues

Confidential, MN

System Administrator

Responsibilities:

• Worked in Datacenter Lab1 managed 200 server nodes.
• Build two new VMware ESX Server 3.0 & 3.5 in Supermicro server 8045C-3R using Guest OS Red Hat Enterprise Linux & Created different virtual machine like Debian, windows 2003 & 2008 server, SuSE enterprise Linux using VMware Virtual Infrastructure Client 2.0 & 2.5 tool and configured with CLARiiON storage box
• Maintained 15 VMware ESX server connected with two EMC CLARiiON SAN box and managed of two Cisco MDS 9000 switch using Fabric & Device management tool
• Configured Virtual disk RAID 0, and RAID 1 in Supermicro server 8045C-3R
• SAS controller firmware and new BIOS updated in Supermicro server for VMware ESX server installation
• Maintained DNS & NTP, MySQL database servers
• Installed and Configured system network monitoring tool used Nagios and troubleshooted virtual machine issues
• Compiled, Build & Installed PostgreSQL database 8.3.1 and written shell script for startup in SuSE Enterprise Linux 10sp1 Supermicro dedicated server 6015B-3R for Fortress platform development Lab, app and QA team
• Applying new patches and packages on Linux
• Used IPMI(Intelligent Platform Management Interface) tool for accessing Supermicro server and managed F5 system
• Configured and deployed JBoss application server.
• Supported Bugzilla, Media Wiki, SVN running in Red Hat Enterprise Linux
• Documented all server list, installation, configuration steps
• Solved installation errors for Debian 3.1 Sarge version kernel 2.6.22 in Supermicro servers for Apache2 web server/ruby/python
• Implemented PXE boot server for network boot loader in SuSE and Red Hat Linux

Confidential

System Administrator

Responsibilities:

• Managed server nodes running SuSE Linux, for application bioask.com
• Successfully installed and configured VMware workstation for testing team
• Installed and configured DNS server using bind9 for multiple domain like bioask.com, serendio.com, and Svapas.com
• Configured routing table-Static routing, Dynamic routing-Routing Protocol, configured gated-RIP-Cisco Router; Hardware: k-260 and D-270. HP 9000, series 800 Web-Site Project
• Implemented Internet load balancing on Multiple ISP, Firewall, Port forward, IP routing using IPTABLES
• Router(http, https, SSH port enabled), Wireless Router Configuration
• Monitored servers and responded to alerts from Nagios Monitoring Software
• Installed, configured and maintenance PostgreSQL for bioask.com application data, postfix mail server data
• Implemented Postfix mail server and used Dovecot IMAP/POP3 protocol, SASL authentication(SSL certificate using openSSL), n number of Virtual Mail box created in PostgreSQL, webmail access configured using squirrel mail, and add/change and remove domain and mail id using Ruby on Rails
• Installed and configured LAMP (Linux, Apache, IIS, MySQL, PHP) for different application like bioask.com, serendio.com, and svapas.com
• Version Control implemented using SVN Subsystems and WebSVN
• Performed server rack mounting and managed /retired old rack optimized servers
• Installed SSL certificate for mail server and web server
• Bug tracking system implemented using Bugzilla for bioask.com application
• Lightweight Directory Access protocol(LDAP) setup for user authentication integrated with Postfix mail server, and Apache web server
• Project Management implemented using dot Project open source
• Remote server maintenance using SSH, in windows putty tool
• Installed RPM package, update and upgrade using YUM
• Written shell scripts to automate system maintenance tasks for Linux clusters
• Wrote shell scripts for system backup Rsync,ssh,crontab
• Responsible for maintaining a production environment that included: Linux, Windows, PostgreSQL, MySQL, Apache, router configuration and monitoring
• Password-less setup done for SSH login using ssh-keygen tool

Confidential

System Administrator

Responsibilities:

• Responsible for the Database / Network operation with 8 server and 120 Desktops
• Setup Squid Proxy Server for internet sharing and to block the unwanted sites
• Maintained Samba File Server for user authentication, synlog domain, and file sharing
• Setup VOIP 8 port Audio Code for outsource business consultant
• Installed and configured Citrix Metaframe XP Presentation Server, Terminal Server to published ITMS application for demo and also used WebEx
• Setup Clustering for Linux servers
• Setup VPN for external team
• Used lilo and fsck to resolved server issues using rescue mode, and single user mode
• Assisted the development team and reviewed the required maintenance tasks
• Responsible for Connectivity issues among various Servers and various software components