SUMMARY

• Over 7+ years of experience in System Administration working on Linux, Solaris and IBM AIX environments.
• Installing, configuring, supporting & maintenance of Red Hat Linux 4.x/5.x/6.x andnSuSe Enterprise servers.
• Installing, upgrading and configuring Solaris 8, 9 & 10 on Sun servers using Jump Start and Interactive Installation.
• Proficient in managing and troubleshooting User accounts, Group accounts and system security in Red Hat Linux and Solaris.
• Experience in installation and configuration of Puppet in Puppet agents and adding their respective classes with parameters
• Expertise in system performance tuning and capacity planning.
• Extensive experience with operating systems, network protocols, system programming and configurations.
• Good experience in setting up of RAID0, RAID1 (mirroring) and RAID5 for data redundancy.
• Installed and setup RHEL for web application servers like Websphere, Weblogic, Tomcat, apache and Oracle databases, RAC environments.
• Created KVM guest operating systems on a Red Hat Enterprise Linux.
• Extensive experience in writing and troubleshooting scripts in shell and python languages.
• Worked on OS migrations, upgrade, BIOS and NIC firmware upgrades.
• Expert in Patch and Package Installation and firmware up gradation.
• Installation and upgrade of Software and Patches, configuration mgmt, version control, service pack and reviewing connectivity issue regarding security problem.
• Installed RPM packages on Red Hat Linux Servers, updated with the help of YUM and Up2date.
• Monitoring system resources, logs, disk usage, scheduling backups and restore.
• Enabling cron jobs and scripts to automate tasks required for optimizing operations.
• Good in file - system management, disk management, disk utilization, service management, device management and memory management.
• Experience in configuration of Automount, FTP, remote access, Active directory, Security management and security troubleshooting skills.
• Extensive experience in Databases, Clustering, Firewalls cross-platform tools like SAMBA.
• Experience in installation of Oracle, MSSQL Server and MYSQL.
• Working knowledge of VMware (Virtualization).
• Experience on SAN and NAS connectivity.
• Excellent communication skills, hardworking and fast learner.

TECHNICAL SKILLS

Operating Systems: Linux (Red Hat, CENTOS & SUSE), IBM AIX 5.x, Solaris 10/9/8, SLES 8,9,10 & 11, Ubuntu 12/13, Windows NT /2000/2003

Networking: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP

WEB Technologies: Tomcat, APACHE 2.x, 3.x, Web Logic (8/9/10) & Web Sphere 4.0/5.0

Programming & Databases: MySQL, Oracle, Sybase, MSSQL, C, UNIX Shell Scripting, Perl Scripting, HTML, Perl, VB

Backup Management: VERITAS Netbackup 4.x/5.x/6.x, Ufsdump, Ufsrestore, tar, cpio, dd, Tivoli, Symantec Netbackup 7.x

Third Party Software: VERITAS Volume Manager, VERITAS Cluster Service (VCS), HP Service Guard, Sun Cluster, EMC Storage, RAID Technologies, SSL, Splunk

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

Scripting: Bash,shell,Python

PROFESSIONAL EXPERIENCE

Confidential, Wilmington, DE

UNIX/LINUX Administrator

Responsibilities:

• Installation, configuration and administration on VERITAS Cluster Server, Redhat Cluster & HP-MC Service Guard on various business critical databases and application production servers.
• Installation, Configuration & Upgrade of Linux, RHEL, AIX operating system.
• Installation and troubleshooting of Redhat Linux (9, 8) and SUSE Linux.
• Successfully configured Kickstart in Linux.
• Troubleshooting Virtual Infrastructure related issues, which includes co-ordination of storage Network and onsite team.
• Writing Shell/python scripts for managing day-to-day transactions and for automation of routine tasks.
• Monitoring of space availabilityon each file-system using the Bash/shell/python Scripts
• Responsibile for maintenance of development tools and utilities and to maintain shell, perl, python automation scripts.
• Installating and configuring for Oracle, SQL Server, Informix Database.
• Supporting Unix/Linux Servers running Oracle and MySQL databases.
• Added new node to the cluster, updated the nodes with patches from RHN cluster.
• Installed, maintained, upgraded and supported Apache web server and Jboss application servers on Red Hat Linux Systems.
• Provided production support of Apache and JBoss including installation, configuration, and management and troubleshooting.
• Installation of Oracle 9.2.0.6 database on Red Hat Linux and Sun Solaris 8.0/9.0 and kernel parameter tuning for Oracle database installation.
• Configured NFS, NIS, NIS+, DNS, Disk Space Management and Sendmail of Sun Servers.
• Creating User accounts, Mail account, groups, configuring printers, and etc.
• Planning & creating volumes and Scheduling the job, making sure the recommended processes are taken care while volumes are created.
• Created Role Based Access Control (RBAC) for users.
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configured auto mounts/maps for the user accounts.
• Creation and Configuration of additional swap/tmp space dynamically as and when required.
• Creating new file system, managing & checking data consistency of the file system.
• Meta devices, applying RAID levels, mirroring the devices, and soft partitioning.
• Installed and configured Redhat satellite server for patch and package management.
• Installation of Packages and required Patches to the application.
• Setup, configuring and backup management using Veritas Net Backup.
• Daily Monitoring of Net Backup activity and reporting to proactively avoid issues.
• Worked with database administration staff to ensure optimal performance of databases, and maintain development applications, databases, and ensure database backup completed successfully.
• Involved in Data Center migration, planning and consolidation of networks from client site to the central site.
• Implementation of RAID techniques using Veritas Volume Manager and Logical Volume Manger.
• Written Shell and Perl Scripting for automation of jobs.
• Configured new service group & resources for new application in Veritas Cluster Server
• Monitored System performance and did kernel tuning to enhance the system performance.

Environment: RHEL, AIX, HP ProLiant DL580 and DL380, IBM P Series, Logical Volume Manager, Veritas netbackup, HACMP with EMC, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x.

Confidential, NYC

System/LINUX Administrator

Responsibilities:

• Installed, upgraded and configured RHEL 6.x/5.x/4.x and IBM AIX 7.x/6.x/5.x/4.x. This included Kickstart Installation, NIM Installation and CD media.
• Installed/Configured Websphere and other Application Servers.
• Installed, configured and administration of Application Server 6.x, Network Deployment, MQ 5.x, 6.0, Jboss 4.x on Linux, AIX.
• Implement and maintain ESX host clusters and security.
• Configure and administered Apache web and VSFTPD services.
• Modified existing Linux file systems to a Standard EXT3 as well as migrating all Solaris Database files toZFSto increase system performance.
• Installed Fix packs on Application Server and added patches using Update installer.
• Installation and configuration of LVM & HACMP on various AIX Servers.
• Installation and configuration of Oracle RAC 11g on RedHat Linux cluster nodes.
• Worked with Oracle Database Administrators and reviewed the required maintenance tasks.
• Installed RPM packages on Linux Servers.
• Managed builds and Deployments, Created Ant Scripts to customize EAR, WAR and JAR files and the application is deployed on WebSphere server.
• Generated HTTP plug-in config and configured with web servers by doing manual edits.
• Configured and administrated LPARs.
• Management of Linux and AIX user accounts, groups, directories and file permissions.
• Configuration of DHCP Server on Linux to get the IP Addresses Dynamically.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail in RedHat Linux, IBM AIX and Solaris.
• Configuration and Maintenance of AutoFs in AIX and Linux.
• Configured SAMBA to get access of Linux shared resources from Windows.
• Day to day Linux and AIX hardware support, problem and change ticket implementations, composing scripts, OS builds & upgrades along with day-to-day Storage & UNIX Administration.
• Tested and implemented Root disk mirroring.
• Taking Backup and restoring the data using mksysb.
• Solaris Performance Monitoring and Tuning using iostat, vmstat and netstat.
• Configuration of Secured Shell (SSH) in both AIX and Linux servers.
• Automated routine jobs by developing Korn, Perl and Bash shell-scripts.
• Configuration and Administration of Apache Web Server and SSL.
• Creating and managing VM’s through Virtual Centre and VI client.
• Scripting for automating changes during move to speed up process.
• Responsible for Monitoring and fine tuning system and network performance for Linux systems.
• Reviewed Web Server, Application Server Performance Monitoring data using Tivoli Performance Viewer and reviewed historical Tivoli logs for root cause analysis, recurring events and involved in troubleshooting the recurring problems.
• System Backup using tar, cpio for local systems and Veritas Netbackup for enterprise wide backup and recovery
• Documenting each step and testing procedures before the migration.
• Take full gathering of data and ensure everything planned and documented so other team members can use it during their support hours.
• Provided 24/7 on call support on UNIX Production Servers. Responsible for maintaining UNIX security on Redhat Linux and IBM AIX.

Environment: Red Hat Enterprise Linux, Ubuntu, HP ProLiant DL580 and DL380, IBM P Series, Websphere 10.0, Oracle 11g/10g/9i, MS SQL, Logical Volume Manager, Veritas netbackup, HACMP with EMC, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x, and Windows 2010.

Confidential

LINUX Administrator

Responsibilities:

• Administered, maintained RedHat Enterprise Linux 5.X, 4.X, Ubuntu troubleshooting hardware, operating system, applications & network problems and performance issues.
• Installation and administration of Solaris 9 and 10 and monitoring, scaling and capacity planning and hardware maintenance of Sun Servers.
• Installed, configured and administered AIX 5.1, 5.2, 5.3 & HACMP.
• Deployed latest patches for, Linux and Application servers, performed Red Hat Linux Kernel Tuning
• Performed Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX, Virtual Center, VM tools.
• Install and configure DHCP, DNS, web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Red Hat Enterprise Linux servers
• Installing and setting up Oracle9i on Red Hat Linux for the development team
• Installed Web Logic 9i with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Provided production support of Apache and JBoss including installation, configuration, and management and troubleshooting.
• Implemented virtualization using VMware in Red Hat Linux on HP-DL585 and IBM-z/VM series.
• Implemented day-to-day tasks in RHEL that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multi pathing and LVM file system.
• Configured GFS file systems.
• Created KVM based virtual machines using the virt-install and virsh command-line tools.
• Linux kernel, memory upgrades and swaps area and performed Red Hat Linux Kick start installations
• Hardware Maintenance and System Administration of existing RS 6000 running AIX (40 systems in Network)
• Created users, manage user permissions, maintain User & File System quota on Red Hat Enterprise Linux and AIX.
• Experience in Migration of HACMP 4.3.1,4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup
• Worked on Web servers; JBoss, Tomcat 5.x/4.x/3.x & Apache Server 2.x/1.x
• Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and production.
• Regular maintenance of VERITAS Cluster, MC/Service guard Packages and load balancing
• Wrote Scripts for automating and testing the code using Perl, Korn. Configured and administrated Lpar’s/DLpars’s.
• Manage systems using remote consoles like ILO for HP Hardware and HMC for IBM P-Series
• Setup network printers and installed client/server applications. Defined/setup network protocols, Network File Services (NFS), and Network Information Services (NIS) in Red Hat Linux and AIX systems.
• Network trouble shooting using 'netstat', 'ifconfig' and 'tcpdump' etc.
• Administration and Configuration in VERITAS Volume Manager/VERITAS File System.
• Monitored trouble ticket queue to attend user and system calls, attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment.

Environment: RedHat Enterprise Linux 4.x,5.x, Suse Linux, AIX 5.X,Sun Solaris 8,9,10, VERITAS Cluster Server, Veritas Volume Manager, Oracle 11G, Perl, Korn, HP UX, IBM AIX, HP Proliant DL 385, 585 Weblogic, Oracle RAC/ASM, MS Windows 2003 server

Confidential

System/Network Administrator

Responsibilities:

• Experienced in Installing, Upgrading, Configuring and Administrating Solaris 8/9 on various Sun hardware's.
• Installing the O.S. using Jumpstart-Automatic installation.
• Managing and adding of Users and Groups, maintaining of login and password aging information.
• Configuring and Administering of Printers.
• Installation of software packages and checking the integrity of the installed packages.
• Worked with Open Boot PROM and define boot process.
• Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software's and directories & files.
• Installation of Oracle 9.2.0.6 database on Red Hat Linux and Sun Solaris 8.0/9.0 and kernel parameter tuning for Oracle database installation.
• Creating and maintaining a Solaris UFS file system and disk slices.
• Performance Monitoring & System tuning.
• Incremental, full backup of user's data and file systems.
• Configuring and managing NFS, NIS and DNS Servers and Clients, Auto mount System.
• Assist in 2nd level support of user email and printer issues in Windows and UNIX environments.
• Formulate BACKUP strategy and taking regular Backups.
• Troubleshooting the connectivity and accessibility issues.

Environment: Solaris 8, UNIX 5.x & Windows NT 4.0 / 2000, Sun Enterprise 450/420R/250 Servers.