SUMMARY

• 7+ Years of experience in heterogeneous and complex IT environments.
• Expertise in Unix, Red Hat Linux Enterprise 4,5,6, CentOS, SUSE 9, 10, 11, Solaris 8, 9, 10, Networking, Programming (Shell and Perl scripting), Databases, Software, and Hardware.
• Experience includes installation, configuration and maintenance of Applications on Solaris, Red Hat Enterprise Linux, different flavors of UNIX and all versions of Windows.
• Experience with Linux Kick Start and Solaris Jumpstart installation methods.
• Worked on designing and implementation of Datacenter migrations
• Installing, Configuring and Maintaining DNS, NIS, NFS and Auto FS.
• Experienced in implementing Splunk, Puppet, Chef, DevOp.
• Hands on experience in administration and maintenance of application services like Mail, HTTP, Apache Tomcat, Squid, DHCP, SMTP, FTP.
• Experience supporting Veritas Cluster 4/5 and Redhat Cluster running on Linux and Solaris servers to support high availability for Oracle DB servers.
• Experience working with SAN & NAS environment's like EMC Clariion and NetApp filers.
• Experience installing and managing multipathing software's like EMC Power path and Native multipathing device mapper and MPXIO on Linux, Solaris and AIX.
• Worked with OS Virtualization using VMWare ESX 3/4/5 and Solaris 10 OS.
• Created Linux and Windows VM's on VMWare ESX environment.
• Experience working with VMWare tools like vCenter & vSphere to manage VM's running on ESX cluster nodes and also experience working vMotion.
• Worked with Potocols like NIS, NFS, Samba, and TCP/IP on Linux server environment and LDAP client - server model to retrieve and manipulate data.
• Exposure to VERITAS NetBackup and disaster recovery planning.
• Implemented RAID levels Raid 0, Raid 1, and Raid 5 for Disk management thro LVM / VERITAS Volume Management. Upgrading normal file systems to RAID levels for growing size/redundancy requirements. Replacing bad drives. Recovery of data from crashed Volumes and disk groups
• Worked with Backup Team to Configure the Master and Client Backup servers Using Veritas Net Backup and Recovery from tapes using ufsdump, ufsrestore, and tar and cpio file system administration.
• Familiarity with a multitude of OSS tools and utilities for managing, monitoring and troubleshooting Linux infrastructure and networks
• Troubleshooting various problems when working with VxVM in initializing, replacing, mirroring, and removing disk devices.
• Performed Consistent OS, APP Backup and Recovery Operations on Solaris servers and Linux, Windows Servers.
• Implemented and enhanced scripts using Korn, C shell, Bash and Perl Scripting and experienced in scheduling jobs using Crontab and At.
• Worked with Solaris Packages and Patches, Red Hat Package Manager (RPM) and YUM.
• Experienced on Installations, Configurations and Managing of Solaris Zones and LDoms.
• Experienced in Service Management Facility (SMF)
• Experienced in documenting various maintenance activities and upgrades and changes in the network architecture.
• RDBMS installation and support including Oracle 8i/9i/10g, DB2 UDB 7/8 SQL Server.
• Experience in providing day-to-day user administration like adding/deleting users and managing user's queries.
• Experience of working in Data centers with 24X7 Production and On-Call Environments.
• Knowledge of SAN architectures and FC/ iSCSI protocols.
• Experience with Datacenter Migrations, Server upgrades, O/S and firmware patching.
• Experience in troubleshooting and diagnostic skills and providing support to Operations personnel.
• Experience with cyber security, server hardening and DMZ deployment.
• Knowledge cloud computing .

TECHNICAL SKILLS

Operating Systems: Sun Solaris 8/9/10/, Linux (RedHat, Suse), IBM AIX6.1 5.3, 5.2, 5.1, HP-UX 11.0, Windows NT 4.0, Windows Vista/XP/2000/98.Sun Fire Servers E25k,E15k,12k, E280R, E480R, V240,420R, V440, V480, V490, V880,V890 and 4800

Software: Veritas File System, Veritas storage foundation suite, Solaris Volume Manager, Veritas Netbackup, MS Office Suite, VMware, Tivoli

Languages: C, C++, Python, SQL, PL/SQL, Shell Programming, Perl, HTML, Javascript, J2EE.

Networking: NIS, NFS, NDM, DNS, ALE, DHCP, Telnet, TCP/IP, SMTP, FTP,AS2,AS3,TFTP, UDP and SSH, Cisco

Tape Libraries: Sun StorEdge L20/L40/L60, L180 and Storagetek's 9840 A/B/C Fibrechannel

Backup: VeritasNetbackup 4.5, Solstice DiskSuite 4.1/4.2, MsBackup, Ufsdump, Ufsrestore, Sysback v4.2, ACSLS

Databases: MS Access, Oracle 9i, 10g, 11g, MySQL, DB2/UDB, Sybase.

Application Servers and Web Servers: WebLogic 8.1/ 10, WebSphere Application Server 5.0/6.0, LDAP Server, JBoss, Apache Tomcat 6.x, Resin, IPlanet and IIS 3.0/4.0

Storage: Sun Cluster 3.2, VERITAS Netback up 6.0, VERITAS Storage Foundation Suite, Solaris Volume Manager 5/4.1/4.0/3.5 , Veritas Clusters

Third Party Tools: MRTG, CACTI, Splunk, Puppet, Chef, DevOp

PROFESSIONAL EXPERIENCE

Confidential, Phoenix, AZ

Sr. Linux Administrator / (Chef & puppet) Developer

Responsibilities:

• Linux administrators, responsible for providing for 24x7 support for production and responding to users' tickets from remedy.
• Administered Network File Systems using Automounter and administering user and OS data files in NIS and NFS environment on both Redhat Linux and Solaris environments.
• Experienced with migration of data of Sun One Directory Server 6.1 from Sun Solaris to Red hat Linux, which included migration of user data, indexes and server certificates.
• Implemented automation tools such as Splunk, Puppet, Chef and DevOps.
• Implemented the Jumpstart servers and Kickstart Servers to automate the server builds for multiple profiles.
• Installation and configuration of database systems e.g. MySQL, Oracle10g in RHES, Centos environment.
• Oracle Real Application Clusters 10g (Installation and Configuration of Linux Clusters Using RDS over InfiniBand Interconnect.)
• Created Volumes and File Systems using Veritas Volume Manager 4.0 and Veritas File System 4.0 (Foundation Suite) and LVM on Linux. Created disk groups, volumes, file systems, resizing the volumes and file systems.
• Supported VCS 4.0 environment for NFS and Send mail agents.
• Administered the File Systems and troubleshooting NFS issues.
• Experience in installing and applying latest patches for Solaris Systems and hardware.
• Created User Accounts in NIS environment.
• Supported proactive maintenance on systems by timely upgrading Patches to the systems and applications, Scheduling batch jobs and cron jobs.
• Installed and Configured Tomcat and Jboss for Web Application deployment.
• Scanned Web and Application servers on a regular basis to check for security holes that need to be patched.
• Securing Apache, Tomcat as per PCI scope.
• Experience managing various file systems using LVM and SVM and also configured file systems through network using NFS, NAS, SAN methodologies and installed RAID devices.
• Netapp as NAS using NFS.
• Writing Bash and Perl scripts for backup and automation.

Environment: RHEL 4.5, 5.0, Solaris 8 and 9, Veritas Foundation Suite, Veritas Volume Manager, Tivoli Storage Manager 5.x, Veritas Cluster Servers, Veritas Net backup.

Confidential, Centennial, CO

Sr. Linux System Administrator / Puppet Developer

Responsibilities:

• Support Level1, Level 2 and Level 3 calls for users worldwide.
• Configure IBM RS/6000 for production, staging and test environments.
• Define standards for installation and support for RS/6000 platform.
• Administration of RHEL, Sun Solaris application and database servers.
• Implemented Splunk, Puppet, Chef and DevOp.
• Configured and worked on Cisco 2600 and 2800 Series routers
• Configured and worked on Cisco 2960, 3550 Series Catalyst Switches
• Configured VLANs along with Access list and performing/restoring backup on TFTP Server
• Data Centers support contains 500 + servers.
• Installation and configuration of Veritas Storage Foundation Suite, Volume Manager, Cluster Servers & Veritas File systems (Vxfs).
• Omni Backup, Netbackup and TSM Backup for backup administration.
• Installation of SSH and configuration of keys bases authentication.
• Integrating UNIX file systems using packages like SAMBA. Setting up printers on UNIX / NT machines to work seamlessly across platforms.
• Network trouble shooting using 'ndd', 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc
• Administration of NFS, NIS, DNS, Samba and Sendmail servers.
• Provided 24X7 support for large number Production, Development and Test systems. coordinating with Sun Support engineers to resolve high priority issues.
• Setup, maintain and management of user accounts and groups according to the security needs and adding the packages and patches when needed.
• Intiating Backups on daily basis and monitoring the scheduled backups.
• Worked on VMWare ESX 4.1

Environment: RHEL,4.5, 5.0, Solaris 8 and 9, AIX, Sun Fire 15K, Sun Fire 6800, 4800, V880, V420R, E220R, E450, Veritas Foundation Suite, Veritas Volume Manager, Tivoli Storage Manager 5.x, Veritas Cluster Servers, Veritas Net backup, Web Sphere, Cisco routers, switches 2600,2800,2960,3550.

Confidential, Culver City, CA

Linux Administrator / DevOps Engineer

Responsibilities:

• Installation and configuring of SUN Solaris, HP-UX andRedHat Linux servers.
• Installing, upgrading and configuring SUN Solaris 8, 9 and 10 on Sun Servers using Jumpstart and Linux using kick start installation, also SUSE Linux Servers manually and using System Imager and updated using YUM and worked on upgrading and configuring SGI Servers.
• Created Virtual server on VMWare ESX/ESXi based host and installed operating system on Guest Servers.
• Implemented Puppet, DevOp.
• Configuring NFS, NIS, NIS+, DNS and LDAP.
• Updating YUM Repository and Redhat Package Manager (RPM).
• Created RPM packages using RPMBUILD, verifying the new build packages and distributing the package.
• Configuring distributed file systems and administering NFS server and NFS clients and editing auto-mounting mapping as per system / user requirements.
• Installation, configuration and maintenance DNS servers, Mail servers, FTP servers, NFS, NIS, NIS+, RPM and Samba Web servers on Sun Solaris, Linux platforms, AIX Server and IBM Tivoli for Load Balancing.
• Experience in installation, configuration and administration of Web Logic and Web sphere Servers.
• Configured SAMBA to get access of Linux shared resources from Windows.
• Involved in deploying Solaris Containers/Zones, SMF and ZFS.
• Managed resources for zones using Solaris 10 container technology.
• Worked in ZFS and QFS and fixed the problems occurred, set the quota and reservations for such file systems.
• Applying new patches and packages of Solaris and RedHat Linux.
• Installation and monitoring of Veritas Volume Manager, Veritas Net Backup and Sun Cluster Server in SAN Environment.
• Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in HP-UX, AIX and Linux.
• Implementation of RAID techniques and the creation of Disk groups and volumes, plex using Veritas Volume manager.
• Trouble shooted various problems when working with VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices.
• Created and maintained large file systems with DMX storage devices using VxVM.
• Experience in implementing High Availability Clusters using VERITAS Clustering, HP Service Guard, Redhat Cluster Server.
• Worked on registering different client servers to master Redhat Satellite Server.
• Experience in providing day-to-day user administration like adding/deleting users and managing user’s queries and maintained Server using Cfengine.
• Worked with and assisted customers with setting proper Priority/Severity of problems, work problems to resolution, recorded/documented actions in databases as well as utilized tools and resources.
• Administer the Network issues and Resolving Operating Systems related issues of laris, AIX, Linux and making sure that the users get the proper environment for testing.
• Plan and implement assigned projects, change management, on-call support, and hotline bridge participation.
• Creating Database users, roles, profiles, alert logs/ trace logs on Oracle Database application boxes and worked on RAC.
• Troubleshooting and analysis of hardware and software failures for various Solaris servers (core dump and log file analysis).

Environment: Redhat Linux 4.x, 5.x,Solaris 10/9/8, HPUX-11.x,10.x, AIX 5.x, SUN E6800, E25K, E4800,V240, V440, V480, V880, E450, E4500, E6500, E6800,, E15K), Blade Servers, Oracle 10g,Veritas Volume Manager, Apache, VMware, Veritas Netbackup, Sun Cluster in SAN Environment.

Confidential, St.Cloud, MN

UNIX System Administrator

Responsibilities:

• Installation, Configuration & Upgrade of operating systems Solaris /9, AIX, HP-UX and Redhat Linux.
• Used fsck and fsdb on file systems successfully when critical data got corrupted. Made use of alternate superblocks to replace corrupted superblock.
• Used commands for creating new users, groups, user passwords, changing passwords, managing user accounts and locking users, Monitored System processes & system status; identifying system bottlenecks.
• Joined multiple disks to overcome disk size limitations, mirrored data for fault tolerance. Spread data over multiple disks for performance enhancement.
• Responsible for Day-to-Day Backup and Recovery using tar. Disk and File system management through Veritas Volume Manager & Solstice Disk Suite on Solaris and logical volume manager for Linux.
• Installed and maintained the machines with the updated Patches and necessary client software packages, pkgadd, pkginfo, pkgrm, patchadd, showrev - p, patchadd - p.
• Configuring systems with Veritas Volume Manager, Veritas File System using Vxdiskadm utility, Vxassist.
• Troubleshooting and fixing the issues at User level, System level and Network level by using various tools and utilities. Schedule backup jobs by implementing cron job schedule during non business hours
• Configured Domain Name System (DNS) for hostname to IP resolution .
• Post installation configuration such as ssh, netgroups, ntp, timezone patch.
• Managed Systems and Network related issues like Installation, Configuration and Troubleshooting on UNIX and Solaris platform
• Using MsBackup, Veritas Volume Manager for Backup and Restore from SCSI Hard Drives on CLARiiON CX200 and Tape Drives using various policies like daily, incremental and differential backup

Environment: Solaris 2.8, Redhat Linux 3, Jumpstart, Automount, Samba, Apache, Tomcat, Netscape Planet Web Server, Java/Shell/Perl programming, Solstice Disk Suite, AS2, NIS/NFS, NDM, DNS, FTP, Win NT and 2000 Server, Solaris V240/440 hardware, Vignette.

Confidential

Linux Administrator

Responsibilities:

• Providing 24 X 7 on call support (locally and remotely) for around 500+ sun servers in a Data Center Production Environment
• Programming in Oracle SQL, PL/SQL
• Red hat Linux Kick start Installation - Sun Solaris Jump start Installation
• Creating and Administering Volume Manager Objects.
• Configure, support and perform routine maintenance of hardware and software for Solaris servers.
• Configuring DNS, DHCP, NIS, NFS in Sun Solaris 8/9 & other Network Services
• Installing new Sun Hardware - performing diag test and sunvts test before releasing the servers in to production.
• Involved in administration of Content Management systems
• Used SOA application for troubleshooting issues with large databases.
• Configuring backups on STORAGE TEK L700 by using Legato Networker web based tool
• Monitored server and application performance & tuning via various stat commands (vmstat, prstat, prtconf, prtdiag, iostat, etc) and tuned I/O, memory etc.
• Install and monitor Java/J2EE applications
• Supporting on all Network, Hardware & Software issues with proper problem solving techniques
• Installing, Configuring Solstice Disk suite 4.2.1 & VERITAS Volume Manger
• Configured NFS Servers, NIS Servers/Clients, Auto clients and auto mounted the file systems using direct and indirect maps. Also setup entries in /etc/dfs/dfstab in Solaris share file systems and mounted the disks onto the client systems
• Migration of Apache webserver applications from Solaris to Linux boxes
• Involved in configuration and troubleshooting problems related to tomcat web server
• Installing and configuring of Veritas Cluster HA for NFS
• Compilation and configuration of Linux kernel.
• Incident Management and Change Management
• Switching the service groups from one node to another
• Creating NFS service groups and failover of NFS from one node to another
• Creating disk groups, volumes for Sybase and oracle databases by using VERITAS volume manager
• Company standards - Follow all the company prescribed global standards and procedures like security, access control, support and change control
• Configuring the GAB and LLT and establishing communication channels.
• Providing 24 x 7 support to various application level, server level & network level Monitoring & troubleshooting of any datacenter outages
• Used Veritas Cluster Server (VCS) and Veritas Storage Foundation to provide high availability and storage management thus moving data across different operating systems and storage arrays
• Managing disk space and system resources
• Document, Troubleshooting, performance analysis, and issue escalation with vendor
• Regular participation in the on-call service and participation in planned weekend work for the implementation of changes
• Day - to-day administration on Sun Solaris which includes Installation, upgrade & loading patches & packages

Environment: Solaris 8/9, Red Hat Linux ES 3.0/4.1, RHEL 3/4, VMware 3.0 Hardware: M4000/5000, Fujitsu prime power t250/t450, HP DL 380/580; EMC Clariion CX series.