SUMMARY

• 5+ years of IT industry experience as a System Administratorand Production Support of various applications onRed Hat Enterprise Linux 4.0, 5.0, 6.0 environment & VMWare ESX 3.5/4.0 & 4.1,5.0 and 5.5
• Experience in Installation, Configuration, backup, recovery, maintenance and support of Solaris, Red Hat Linux & AIX.
• Experience on Red hat Linux Server & Desktop Environment using through Virtual Machine under VMware.
• Experience in Package management using RPM and YUM in Red Hat Linux.
• Installing, upgrading, and configuring RHEL 4, 5 and 6 using Kickstart.
• Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services and protocols like NIS, NIS+, LDAP, DNS, NFS, DHCP, NAS, FTP, SSH and SAMBA.
• Knowledge about setting upPythonREST API Frame work using Django.
• Experience in operating, and maintaining systems running onAWS.
• Experience in Installation, Configuration and Troubleshooting of various web server issues including IBM HTTP Server, Apache Web Server 2.x/1.x, Tomcat 5.x/4.x/3.x.
• Experience in working on Veritas File System, Veritas Cluster, extended logical volumes for the system growth needs using Logical Volume Manager (LVM).
• Efficiency in installing, configuring, and implementing of RAID 0, RAID 1, and RAID 5 levels using Logical Volume Manager, VERITAS Volume Manager and Solaris Volume Manager.
• Skilled in developing procedures for startup, execution, shutdown, backup, and recovery as required, and assist in determining needs for both hardware and software.
• Efficiency in using different ticket systems like HP SERVICE MANAGER TOOLS.
• Resolving system errors and crashes, huge file sizes, file system full errors.
• Excellent skills in analyzing, designing, implementing and system integration, Knowledge on Switches, Routers, & Firewalls.
• Expert in Data center operations including hardware, software setup monitoring, troubleshooting on a 24x7 basis with BMC patrol, Team Quest, Unicenter & Smart trouble ticketing Systems/remedy tickets/kintana tickets etc.
• Expertise in writing scripts for automation and monitoring using Shell (bash, C and Ksh), PHP, Python and Perl scripts.
• Creating and maintaining user accounts, profiles, security, rights, disk space, and process monitoring
• Manage user accounts for the team access for Red hat Satellite Server.
• Running security scans and remediating Servers to meet enterprise standards.
• Involved in Design, Planning and Implementing Migration activities to move application from Solaris 9 & 10 to Redhat Linux Environment.
• Experience working in Data Centers and supporting HW like Dell and HP.
• Proficiency in Microsoft Outlook, Excel and Word
• Independent problem solving and a good team player with strong interpersonal and communication skills.
• Experience supporting 24x7 production computing environments. Experience providing on - call and weekend support.
• Excellent analytical, problem solving, communication and interpersonal skills.
• Excellent people skills and customer management skills

TECHNICAL SKILLS

Operating Systems: RHEL 4.x, 5.x, 6.x, Sun Solaris 8,9,10,11, VMWare ESX 3.5,4.0,4.1,5.0, 5.5, Oracle Enterprise Linux 4, 5, CentOS 4.x, 5.x, 6.x, Windows 98/2000/2003/2008/ XP

Hardware: M5000, M8000, T5220, T5240 Sun E15K, E25K, Sun Fire 6800/4900/3800 , Sun Fire 490/280, v880/v890, Sun Enterprise Servers, E6500, E4500, E3500, Work Group Servers E450, E420, E250, E220, Netra 1405, Netra X1, Ultra 80, 60, 30, 10, 5, 2, 1, Intel Servers.

Networking: TCP/IP, NIS, NFS, FTP, DNS, DHCP, Samba, Apache, SMTP, SSH, HTTP

WEB Technologies: Tomcat, APACHE 2.x, Web Logic (8/9/10) & Web Sphere 4.0/5.0.

Scripting Language & Databases: RDBMS, MySQL, Oracle, MSSQL, Shell Scripting, HTML and VB.

Protocols: TCP/IP, UDP RIP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET

PROFESSIONAL EXPERIENCE

Senior Linux Administrator

Confidential, Baltimore, MD

Responsibilities:

• Installation ofRedHat Linux EL 5.x based servers using Kickstart indevelopment, test and production environments.
• Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Performed project coordination function forevaluation, installation, monitoring, and maintenance of server software on variety of hardware platforms.
• Worked with team of developers on Python for RISK Management
• Worked on Python open stack API’s
• Installed and configured servers using Red Hat Linux Kickstart method.
• Installation and configuration of RedHat Linux 5.3 on Dell PowerEdge, HP Proliant and VMware ESX.
• Administered the UNIX System for clustered HP Servers with fiber attached SAN.
• Installation of SAMBA utility software for sharing files with Windows hosts
• Managing Disks/File systems using Logical Volume Manager for RedHat Linux.
• Installation and configuration of Oracle RAC 11g on RedHat Linux cluster nodes
• Used various networking tools such as telnet, rlogin, ftp and ping to troubleshoot daily issues.
• Proactive maintenance on systems by timely upgrading Patches to the systems and applications, Scheduling of batch jobs and cron jobs.
• MaintainedVolumesandFile systemsusingVxVM / VxFS for Oracle, DB2, MYSQLdatabases.
• Used VxVM toadd disk, create new disk groups/volumes, resize, deport and importdisk groups between servers.
• Experience with runningSQL queries on Oracle and MySQL.
• UsedVERITAS Cluster Server 4.1to create high available environments forNFS, WebLogic and Send mail agents.
• Efficiency in installing, configuring, and implementing of RAID 0, RAID 1, and RAID 5 levels using Logical Volume Manager.
• Managing Amazon Web Services (AWS) infrastructure with automation and configuration management tools such as Puppet or custom-built.
• Analyze and resolve conflicts related to merging of source code for GIT.
• Design roles and groups for users and resources using AWS identity Acess Management (IAM).
• Configured Network Concepts NFS, DNS, NIS and DHCP, troubleshooting network problems such as TCP/IP, providing support for users in solving their problems.
• Installation and configuration of web hosting administration such as FTP, SSH, RSH, Telnet, and HTTP.
• Performedsystems monitoring, upgrades,performancetuning and backup and recovery.
• Implementation of naming services like DNS with Bind 8.4.x and NIS.
• Troubleshooting and fixing the problems related to systems, software and day-to-day regular maintenance tasks of the system.
• Respond toemergency callsrelating to server performance, diagnosis of problems, repairing problems or calling upon appropriate vendors to resolve the issue.
• Responsible forqualityreviewsandstandards.
• Expertise in RedHat Linux backup/restore with tar including disk partitioning and formatting.
• Provided24x7on-call /RemoteSupportfor LINUX Production Problems on weekly rotation basis.
• Troubleshooting day-to-day server related issues and problems.

Environment: Red Hat 5.x/6.x, CentOS 5.x/6.x, VMware Virtual Client 3.5, AIX 5.3, 6.1, Windows Server, XP, 07,08, DNS, NFS, SMTP, Veritas File System (VxFS), Web server Apache 1.3x, Application server Jboss, Python, SAN Storage, Sun Solaris 10, VMware, vSphere 4.1/5.1, AWS Identity Access Management.

Linux Administrator

Confidential, St. Louis, MO

Responsibilities:

• Configuring, Installation and administration of RHEL 6.0 and SUSE 10.x
• Configured kickstart server, updating/applying patches to the servers using RedHat Satellite server.
• Remote system administration using tools like SSH, TelNet, and Rlogin.
• Planning and implementing system upgrades including hardware, operating system, periodical patch upgrades.
• Developed Django application for Google Analytics aggregation and reporting.
• Used Django configuration to manage URLs and application parameters.
• Used Python scripts to update content in the database and manipulate files.
• Designed dynamic and browser compatible pages using HTML5, CSS3, JQuery and JavaScript and Angular JS.
• Responsible for creating the screens with table-less designs meeting W3C standards.
• To provide automation, used Configuration Management Tool, Chef.
• Integrate the dynamic pages with Angular JS and j-query to make the pages dynamic.
• Worked with configuration management tools like CfEngine / cobbler to configure Linux systems
• Deployed and maintained fully automated production environment of several servers using CfEngine3 and development / research branch using puppet.
• Managing cloud infrastructure using integrated tools for efficiency, scalability such as Puppet.
• Installation, configuration and administration of VMware.
• Performed capacity analysis.
• Operated electronic service request system using HP SERVICE MANAGER TOLLS.
• Monitored and controlled disk space usage on systems.
• Monitored system activities and fine-tuned system parameters and configuration to optimize performance And ensure security of the systems.
• Custom build of RHEL/CentOS and windows servers which includes adding users, SAN, network configuration, Installing application related packages.
• Responsible for maintenance of development tools and utilities to maintain shell and perl automation steps.
• Setting up network environments using TCP/IP, NIS, DNS, SNMP agents, DHCP and proxy.
• Installation and maintenance of Oracle and DB2 server on Sun Servers
• Setup user, group login ID’s, printing parameters, network configuration, password, resolving permission issues, user and group quota.

Environment: RHEL 6.0, SUSE 10.x, HP-UX, Windows Server, Oracle, DB2 Server, Python, VMware, Sun Enterprise, Apache Web Server, Puppet, Oracle, Perl, Dell POWEREDGE

Linux administrator

Confidential

Responsibilities:

• Installed and configured several hundred Red Hat Blade and VMware ESXi 4.1, 5& 5.5 Virtual Environment.
• Configured Red Hat Cluster Nodes for any legacy applications and verified the daily health check on the Cluster Nodes.
• Installing and configuring Red Hat Enterprise Linux 5, 6.1 using kick start servers
• Responsible for installation, Configuration and administration of Oracle10g/11g database on SCO Unix, Linux and Windows 2003 Servers and also an integral part of the backup and recovery.
• Installing and updating packages using YUM (custom YUM servers/repositories) and Red Hat Satellite Server.
• Configured and Administered Apache, VSFTPD services, MYSQL and Tomcat.
• Participating in 24x7 production on-call support of Linux and provided technical support to users.
• Configured and deployed patches, upgrades, bug fixes on both physical and virtual Red Hat Linux servers using satellite servers.
• Implemented rapid provisioning and life cycle management for Redhat LINUX using kickstart
• Expertise in security hardening (iptables/selinux) major Production Servers, and compiling, building and installing web server based Linux tools.
• Proficient in providing support on the deployed Red Hat Enterprise Linux from both operating system level and application Level.
• Expertise in creating VM Templates, cloning and managing Snapshots.
• Expertise in working with MySQL databases, Apache Web server, Tomcat Application Servers
• Troubleshooting any performance or configuration issues with MySQL and Oracle.
• Expertise in hardening, Linux Server and Compiling, Building and installing Apache Server from sources with minimum modules.
• Performing System Storage management/LVM tasks like creating volume groups, PV’s, LV’s and jfs/jfs2 Filesystems, mirroring, VG’s, LV’s and mounting filesystems.
• Monitoring and troubleshoot backups and schedule Cron jobs.
• Experience in scripting using BASH & PERL, Mail Server, Samba Server, Apache Server.
• Worked on configuringNIS, NFS, DNS, DHCP, FTP, FSTP, Telnet and RAIDlevels.
• Extensive experience in network managementTCP/IP, NIS, DNS, NFS, VLAN.
• Experience in database replication using OCFS2 file system with oracle 10g and 11g database
• Experience in deploying RHEL 5.x, 6.1 in a blade environment.
• Patch management of servers and maintaining server's environment in Development/QA/Staging/Production.
• Resolving assigned remedy tickets and remedy tools in Development/QA/Staging/Production.

Environment: RHEL 4.x/5.x/6.x, Solaris 9,10&11, HPUX, Centos, SUSE 10, 11, VERITAS Volume Manager 3.x/ 4.x, VERITAS Storage Foundation 5, Redhat Cluster, VERITAS Cluster Server 4.1, Tripwire, NFS, DNS, SAN/NAS.

Linux Administrator

Confidential

Responsibilities:

• Managed server on VMware and provided test environments on virtual machines.
• Provided IT support to internal staff members.
• Provided application support to large users groups.
• Installed hardware, installed RHEL 3.0 OS and configured required network on 25-Node HPC cluster.
• Managed HPC cluster, performed hardware, BIOS and application upgrade.
• Configured and managed Apache web server.
• Managed software and hardware RAID systems.
• Configured and maintained FTP, DNS, NFS and DHCP servers.
• Creating users at OS level
• Creating & maintaining User groups at OS level
• Managed user accounts and authentication process by NIS service.
• Managed System Firewall utilizing IP Chains, IP Tables. Implemented SSH SSL.
• Managed user disk usage by setting up quotas.
• Administered system logs and security logs.
• Updated software packages and applied security patches.
• Performed hardware maintenance, upgrades and troubleshooting on workstations and servers.
• Communicated with hardware and software vendors and equipment dealers and maintained good relations.
• Wrote documentation for internal use about system changes, systems administration, etc.
• Provided 24 X 7 on call support (locally and remotely) for around 500+ sun servers in a Data Center Production Environment
• Performed Red hat Linux Kick-start Installation
• Attendedto users, developer problems; did troubleshoot the system and end user issues.
• Created and maintainedOperating System Installation Documents.
• Monitored system performance, tune-up kernel parameter, added /removed /administered hosts, users.
• Scheduled Jobs usingCRONTABandAT Utility and wrote shell scripts to automateSystem Process.
• Added more resources likeMemory, Disksand increasing theSwap.
• Performed User and Group Management usingAdmin tool.
• Involved in documenting of Linux and Windows environment and configuration details including documentation of solutions for any issues that have not been discovered previously.

Environment: Red Hat Linux, Sun Ultra E 250/450/3500/4500 , Windows NT 4.0 / 2000, SQL 7.0/2000, Perl, shell Scripting, CRONTAB/AT.

Jr. Systems Administrator

Confidential

Responsibilities:

• Managing Disk File Systems, Server Performance, Users Creation and Granting File Access Permissions
• Troubleshooting the backup issues by analyzing the NetBackup logs
• Configuring and Troubleshooting of various services like NFS, SSH, Telnet, FTP on UNIX platform.
• As on regular basis working on Service Requests (SR) and Request for changes (RFC) created by customer and various support teams and troubleshooting issues related with operating system, backup, refresh Database, Application Instances as per priority and as per SLA.
• Configuring Network File Sharing using standard method NFS& exporting of volumes/shares based upon the DB instance requirements to instances running boxes.
• Scheduling Cron jobs for automating various Administrative tasks.
• Responsible for monitoring and controlling multiple Unix/Solaris Servers directly through Operating System and utilizing various system Utilities.
• Configuring distributed file systems and administering NFS server and NFS clients and editing auto-mounting mapping as per system / user requirements.
• Creating and maintaining users at OS level
• Creation and maintenance of user Groups at OS level
• Monitoring Disk, CPU and Memory & Performance of servers.
• Managing File systems and troubleshooting file systems issue.
• Configuring LVM's.
• Working with DBA, Application team to clear the logs, file system space issues
• Managing the permissions & moving files with SCP, FTP.
• User administration tasks, Permission issues.
• Monitoring the logs for Issues.
• Working on Daily reporting tasks to management about the file system, Space, Swap, CPU Usage.
• Working on Daily backup status & rescheduling the backups for failed backups.
• Working with senior team members to fix the issues.
• Rebooting the Unix/Linux Boxes after patching.
• Configuring Daily, Weekly & Monthly Backups. Reporting to onsite team about completed backups & Media Id’s for safe keeping.

Environment: SUN Solaris, Red hat Enterprise Linux-5, Intel Xeon, Oracle Sun SPARC, NFS, LVM, FTP, SSH.