SRI 408-***-****

OBJECTIVE:

Seeking the Position of Senior Linux System Administrator in Information

Technology with a technology-driven organization of repute.

SUMMARY:

* A results-driven and technically adept IT professional offering Around

8 years experience; excelling in Linux Systems Administration.

* Linux System Administration skills (Red Hat, SUSE, Ubuntu & Vmware

ESXi)

* Extensive experience in installation, configuration and administration

of Solaris 2.x,7,8,9,10, Redhat 7.3,8,9,IBM AIX 4.3,5L. Support and

maintenance of Sun Ultra Enterprise Servers (E3500, E4500,

E450,E420R,E250), SunFire (6800,4800,3800,V880,V4xx,V2xx,), Sun

Workstations (Ultra 5,10,20, Blade 100,150,2000).

* Expertise in Vmware Virtualization solutions, VM Migration & Cloning;

* Experience working with LDAP/Kerberos authentication and Access

Management control in mixed environments using tools like VAS.

* Experience in Installation, Configuration, Implementation,

Upgradation, Maintenance & Troubleshooting of WebLogic

V5.1,6.1,7.0,8.x/9.x/10.x.

* Experience on Webservers such as Webserver 6.0,Tomcat 5.x/4.x/3.x

&Apache Server 1.x/2.x.

Creating and maintaining user accounts, profiles, security, rights, disk

space and process monitoring.

Expertise in file system concepts like LVM, SVM,VxVM.Creating new file

systems, increasing and decreasing file systems,mounting file

systems,unmounting file systems and troubleshooting Disk space issues.

* Efficiency in installing, configuring and implementing the RAID

Technologies using various tools like VxVM and SVM.

Planning, documenting and supporting high availability, data replication,

business persistence, fail-over, fail-back using Veritas Cluster Server

4.x,5.x.

Experience in Installing, configuring and maintaining apache/tomcat, samba

& send mail, Web Sphere Application Servers.

Expertise in LDAP setup and Administration; Other experience including DNS,

NIS, NFS, DHCP, Kickstart, Web and E-mail.

* Experience in SAN/NAS Storage.

* Experience in Oracle Installation.

* Configured Networking Concepts DNS, NIS, NFS and DHCP, troubleshooting

network problems such as TCP/IP, providing support for users in

solving their problems.

Good presentation, customer support and trouble shooting skills &

experience in providing 24x7 supports.

* Red Hat Certified Engineer (RHCE).

TECHNICAL SUMMARY

Linux Server RHEL AS 4,5,6; Solaris 8/9/10; SUSE, Ubuntu ;

Administration Expertise on Dev, Staging and Production environment

under various OS, Application and Storage platforms;

Shell Scripting: Bash.

Nagios Syslog Server; User Management, Sudo; Disk

Management: Partitions, File systems; Process

Management; Swap Management: Swap Partitions &

Files; Package Management: RPM, YUM; Quota

Management: User and Group Quota Configuration.

Backup and Recovery tools: Dump, Restore, Tar, CPIO,

Rsync, Kernel re-compilation & Patches update,

Kickstart Installation; Firewalls: IPTables;

SELinux; ACLs

File Transfer: FTP-Vsftpd; NFS & SAMBA; DNS-BIND,

NTP, CUPS, SSH, Telnet, VNC,NIS & LDAP, SSL

;Job Scheduling: Cron, At.

Database, OracleHA Cluster Management, LUN provisioning;

Storage & VMware Virtualization solutions:

Virtualization vSphere4/vCenter/ESXi-3.x/4.x; Oracle VM

VirtualBox,KVM, Vmware Workstation and Server;

Veritas Cluster Server Veritas Volume Manager

(VxVM), Veritas File System (VxFS),Veritas Cluster

4.x/5.x, Sun Cluster Server,NFS,NIS,Jumpstart,VAS(Vintela Authentication

Service), Kickstart,RAID,VMware,Apache, EMC, Bash,

KSH,Tivoli, HPSIM.Change Management, LMS,EDM.

Dell Power Edge Servers and MD1000 Storage/RAID

setup

Web, Application Weblogic 10.x/9.x/8.x,Websphere,Apache

and Mail Servers HTTP/Tomcat/Jboss Server Installation &

Configuration; Compiling with Modules; Virtual

Hosting; SSL, Loadbalancing & Clusters

Installation and configuration of Sendmail, Qmail,

Postfix.

Protocols: SMTP, IMAP, IMAPS, and POP3.

Open Source Nagios,Puppet,Windows 2000/2003/2008 Server

Tools & Other Installation & administration, Anitivirus Softwares,

Exposure MS Outlook; Knowledge on Java, C, C++, PHP.Shell

Scripting.

EXPERIENCE SUMMARY

CLIENT: GE Healtyhcare, WAUKESHA,WI, USA.

SENIOR SYSTEMS ENGINEER (July 2013- Present)

. Performing UNIX systems administration on production and development

servers. Red Hat / Ubuntu Linux and AIX, UNIX utilities, UNIX scripting,

understanding of hardware.Extensively working in a Enterprise level Unix

environment AIX, RedHat Linux Experience using Clustering Technologies

(VCS, ASM) & Application Servers (Websphere/Weblogic).

. Supporting Database environments (Oracle, DB2).Provisioning and building

Linux servers both Physical and Virtual using Vmware and LPAR's in AIX.

. Database Administration, design, maintenance and production support;

Database Migration from MD1000 Storage to NetApp FAS2040( Clusters)

Filers and management of ISCSI/Multipath networks.

. Administration, Maintenance and Management/Monitoring of Netapp

filers/Clusters which includes FAS 2040

. VMware Infrastructure 3.x/vSphere Installation & Configuration; VMware

vSphere client, Virtual vCenter Server; Virtual Server creation,

allocation & server configuration

. Planning and Designing VMware VI3/vSphere (ESX3.5/ESXi 4.0/ESXi 4.1 and

VMware VirtualCenter) Environment.

. Administration of Web based Internet/Intranet Client/Server multi-tire

distributed applications; Installing Patches & packages on Unix/Linux

Servers.

. Performance Tuning, Query Optimization, Client/Server Connectivity, and

Database Consistency Checks using different Utilities. Expertise in

database migration from MyISAM format to Innodb storage engine to

increase performance and betterment of integrity constraints.

. VERITAS Volume Manager and VERITAS File System troubleshooting and

Administration.

. Mutli-tier application environment with Weblogic, Websphere. Mission

Critical 24x7 Servers support.

. NIS, NFS, AUTOFS, NTP Configuration and Administration.

. Analyze and suggest corrective methods on performance issues.

. Package and patch administration.

. Shell scripting, Perl & Python scripting for Linux/Unix Systems

Administration and related tasks. Storage / Servers daily checks,

performance tuning, performance monitoring and health checkup; Planning,

preparation and implementing Data ONTAP upgrades.

. Storage LUN provisioning; Qtree, CIFS File System, NFS File system

Management

. Installation, Configuration and maintenance of Hosted VMware products.

Design, Implementation, Testing and Deployment of VMware Infrastructure;

Installation, Configuration and Administration of VMware VSphere4, ESX

3.5 and ESXi Server, VMware View. Virtual Networking (Virtual Switches,

VM Kernel Ports) And Virtual Storage (Access Control and VMFS Data

stores); Creation, Management and Configuration of Virtual Machines,

Clone and Templates; Customizing guest operating system on Virtual

Machines.

. Monitoring: strong experience with Centreon/Nagios, Splunk, MySQL

Dashboard, Cacti etc.

. Handled installation and maintenance of workstations, servers,

networking equipment, and other supporting hardware.

. Responsible for production application support of high-transaction

service offerings, implementation and automation through scripting.

. Sendmail/Postfix MTA setup and administration; Done with mail relay and

other concepts

. Other administration tasks handled are: Tuning the Operating System for

optimum performance, Debugging system defects and crash dump analysis,

Planning and Executing System and Network Upgrades.

. Meeting deadlines without compromising quality norms & Performed

occasional off-hours and remote support.

Environment : Redhat Linux 3,4,5,6 Sun Solaris 8,9,10,HP DLseries G8,IBM P

series,Sun Solaris 8,9,10,Logical Volume Manager, Veritas Volume Manager,

Solaris Volume Manager, Veritas Cluster Server, WAS8.5, IHS,Oracle

10g,11g,Vmware 5.1.

CLIENT: CHARLES SCHWAB, AUSTIN,TX.

LINUX ADMINISTRATOR (Sept 2011- July 2013)

. Responsible for supporting Linux System Administrator customers with

RHEL/CentOS/Ubuntu operating systems questions and problems via

telephone, FAX, and email. Researched the data base for known problems

or tested the customers problem on a test system in the same

environment. Aided customer in resolving their problem using the tools

in the Linux OS or from the command line.

. Overall responsibilities include checking the health of servers, updates

and backup. Check with the trouble ticketing system for any unread

ticket. Also troubleshooting if there any bottlenecks; Responsible to

perform BIOS update on Dell Systems. Handled all system administration

duties for all Red Hat Linux and VM Servers on site. Responsibilities

ranged from daily tasks to more advanced ones such as shell scripting,

software installation and system/network troubleshooting.

. Responsible for the Server Administration tasks in the web & server

support areas. Installed and Configured Web, Application and Mail

servers. Wrote shell scripts for automating tasks. Monitored the file

systems and CPU load for better performance. Automated Time Monitoring

on Servers through shell script and added checkpoint to ensure the

script is running via crontab entry; setup mail alerts also.

. VERITAS Volume Manager and VERITAS File System troubleshooting and

Administration.

. Mutli-tier application environment with Weblogic, Websphere. Mission

Critical 24x7 Servers support.

. NIS, NFS, AUTOFS, NTP Configuration and Administration.

. Analyze and suggest corrective methods on performance issues.

. Package and patch administration.

. Adding additional and extension of existing Filesystems using VxVm and

Vxfs. Configuring autofs for automounts. Upgrading the Application as

per Application team requirements. Scheduling jobs using crontab and at.

. Responsible for Oracle DB Setup and Instant Client Installation and

configuration; Perl DBD::Oracle Module Compilation. Assisted Oracle DBA

in writing scripts for automating Oracle tasks on the UNIX Server.

Performed DB Performance Tuning and Administration. Managed all aspects

of database administration from upgrades to disaster recovery and

performance tuning, testing the performance.

. Done with LAMP Setup in Ubuntu. Also MySQL setup, Performance Tuning,

Replication, Commands, Backup and overall Administration. Tuned servers

for maximum efficiency for Oracle and MySQL Data Bases.

. Performed workstation and server installations and upgrades,

standardized workstation configuration, automounter, sendmail, and

hardware upgrades; administration support and troubleshooting duties in

a 24x7.

Environment: Redhat Linux 3,4,5,6 Sun Solaris 8,9,10 Sun V440,V490 T5220

T5240 Sparc stations 20,Switches, Vmware ESX 5.1,oracle 11,Veritas Cluster

Server 5,Veritas Operations Manager.

CLIENT: AMGEN, thousand oaks,ca.

LINUX SYSTEM ADMINISTRATOR (Sept 2007- Sept 2011)

. As an Open System Administrator my duties included supporting Linux

System Administrator customers with RHEL/SUSE a combination of systems

architecture, systems development, Unix/Linux operating system lifecycle

development, technical assessments, implementation administration,

regression process development, SAN support from a directory standpoint,

technology scaling, server builds, migration and/or transition planning,

project planning, standards validation/development, technical

documentation, presentation to management, training and mentoring of

more junior staff and troubleshooting and problem resolution.

. To provide ongoing support in systems management and administration of

LINUX/UNIX in global-scale environment.

. Provide rotational on-call Tier III support responsibilities. Production

Support: Provided 24x7 supports for various divisions within the Company

and resolve all production issues in a high pressure and time sensitive

environment.

. Issues related to NFS, NIS, LVM, Grub corruption, configuration &

maintenance of RAID (level 0,1,5), troubleshooting Veritas Volume

Management and cluster server environment, VMware configuration,

auotomount, ODS, SCSI errors, installing Solaris/Linux software and

patches, NTP and Cron errors, swap space, memory and capacity alerts,

SSH and k5login, hung system reboots, Access Management control using

Active Directory and LDAP, file restores and troubleshooting backup

interfaces, Sun System Crash Dump Analysis, ASR errors, troubleshooting

Sysinfo, systems panic, bringing system back online after failure,

modifying kernel parameters, server moves, troubleshooting network

connectivity and DNS errors, RVRD daemon, Autosys job failure, print

configuration,Apache,SAN connectivity, add/delete EMC SRDF and Clarion

Storage, NetApp Q tree issues etc.

. Developing scripts in PERL and SHELL to automate the process.

. Disaster Recovery and Change Management: Designed and implemented

disaster recovery solutions such as clusters using Veritas Cluster

server for storage replication and to allow seamless failover of IP on

the DR site.

. Weekly meeting to discuss change management, datacenter and

infrastructure approvals/issues.

. Server Optimization and Workstations Consolidation: Monitored health of

servers and implemented customized solutions where applicable as well as

provide reports on server utilization. Standardization, Documentation

and Processes: Created run books for global consistency and streamlined

and enforced processes to improve efficiency and accountability.

. This includes setting up global standards for various customized images

for Linux and Solaris, hardware standard (Sun and HP) and storage

presentations and initialization. Engineered and managed process flows

and event management as per business requirements.

. Production Support & Systems engineering duties related to Redhat

system administration DNS, DHCP, NFS, NIS, LDAP, user account

maintenance, backup & recovery, Auto-mounting, Licence Management,

Printer configuration.

. Client interaction for requirement gathering, so as to design and plan

the software and hardware infrastructure; Handled installation and

configuration of SQUID Web proxy.

. Installed and configured Oracle 10g and MySQL databases for development

and production use. Also did MySQL administration & performance tuning.

We have a replicated MySQL setup. Also worked as part of of PHP-MySQL

and JSP-PostgreSQL application development team. Conducted operational

testing with client Administrators and DBAs.

. Managed e-mail systems, including POP, SMTP, text, and web-based clients,

as well as virus scanning/filtering software; Installed, configured and

managed DNS service for several domains; Performed OS installations and

configuration for testing and implementing server environment based on

virtualization.

. Created test scenarios for testing NIS, NFS, DNS and other functionality

of the OS. Maintained system security, including password checks,

permission scans, implementation of security ensuring tools Linux

environment. Managed disk space on server systems using Software RAID and

Logical Volume Manager.

. Installed and maintained web servers Jakarta Tomcat and Apache HTTP (1.3,

2.2) Web server in Red Hat Linux .

. Dealt with Linux Utilities: KICKSTART, SSH, FTP, AUTOFS, Quota

Management, wrappers. And provide timely solution to users on issues of

network environment & software problems . Also, configured Linux servers

to handle the following duties: User Management, Process Management,

Memory Management, Text processing tools, Log Management, Package

Management, Disk Management and Swap Partition/Files Management.

. Installation of Firewall checkpoint. Installed and configured IPFilter,

to protect Linux system that was placed on the Internet.

. Handled installation and configuration of Linux MTAs - (Sendmail, Postfix

and Axigen).

. Provided technical support for clients and application development teams.

. Prepared Bash Scripts for Automation of Server tasks. Extensive

development of maintenance scripts to monitor system status, providing

web-based, e-mail notification of system problems such as security

breaches, loss of network connectivity, mail queues, user activity, disk

allocation, and application availability.

. Preparation of operational testing scripts for Log check, Backup and

recovery and Failover. Creation and implementation of shell scripts to

take care of DB backup, monitoring alert log and log rotation reports.

Environment: Redhat Linux 3,4,5,6 Sun Solaris 8,9,10 Sun V440,V490 T5220

T5240 Sparc stations 20,Switches, Vmware ESX 5.1,oracle 11,Veritas Cluster

Server 5,Veritas Operations Manager. DL380,DL 580,585 G2,G5,G7's

CLIENT :LARSON & TURBO., CHENNAI, INDIA.

system Administrator (Mar 2006 - Aug 2007)

. Performed system administration of UNIX servers by using Operating

Systems of Solaris 2.7/8 Managing SUN Solaris, Compaq and Linux

workstations and servers.

. Installation of patches and other software packages Disk and File system

management through Solstice Disk Suite on Solaris and other logical

volume manager for other flavor of UNIX.

. Configuration of Hardware and Software RAID on Digital & Sun Servers.

. Installation of Oracle Patches and Troubleshooting, Creating and

modifying application related objects, Creating Profiles, Users, Roles

and maintaining system security.

. Configuration and maintenance of NIS, NFS, DHCP and DNS Servers on

Solaris. Administrative tasks such as System Startup/shutdown, Backup

strategy, Printing, Documentation, User Management, Security, Network

management, dumb terminals and devices carried out.

. Responsible for Web, Mail & DNS Server Setup and maintanace which

includes Virtual Hosting, SSL, Zone entry creation, and Antispam tools.

Managed the Web Hosting dept. and Administrated all user domains, and

accounts. FTP Server Setup and Management: Performed user account

creation, deletion, and configuration, Permission setup and FTP Client

installation and management

. MTA management tasks include : Administration of email accounts, mail

lists and general-purpose mailboxes, Maintainance of server

configurations and client accounts, Administration of SPAM filtering

solution, Provide user support, Maintainance of documentation in

support of email use and troubleshooting, Provide after-hours

monitoring and support of email system and Participated in email

migrations and upgrades.

. Worked in Qmail MTA Installation and Configuration: Experienced with

Qmail and QmailAdmin., Setting-up and monitoring Qmail on linux servers

with email relays, Installation of software: daemontools, ucspi-tcp,

qmail-pop3d, checkpassword, qmail big dns patch, qmail smtp-auth patch,

fastforward (optional), dotforward (optional), and qmail-smtpd-viruscan

patch (to reject Microsoft executable attachments for basic anti-virus

filtering; optional). A thorough testing of the system. Protocol

support: POP3, SMTP and SMTP-AUTH

. Worked as part of Development Team in assisting for a University

Admission Software. Handled all the Server Administration Tasks in

Linux.

. Development & Implementation of an IVRS system for a Banking

application, using Java under UNIX platform, by establishing multiple

databases( Psql/Mysql/Mssql connections) at different stages.

Responsible to handle the Server Administration and Asterisk Server

Installation and Configuration in Linux. Also worked as part of its

development module using RMI and JSP. Another module here is the Design

and development of a multipurpose SMS alert system using Linux, Pl/SQL,

Java SMPP and GSM Modem.

. Worked as part of Testing Team in Application testing using Manual

methods and Scripts.

. Installation, configuration and management of postgresql & mysql

database servers.

. Client interaction for requirement gathering, so as to design and plan

the software and hardware infrastructure. This includes Banks,

Healthcare & Financing

. Familiar with Disk Management Utility. Used daily for file system

creation and file system management.

Environment: Redhat Linux 3,4,5,6 Sun Solaris 8,9,10 Sun V440,V490 T5220

T5240 Sparc stations 20,Switches, Vmware ESX 5.1,oracle 11,Veritas Cluster

Server 5,Veritas Operations Manager.

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