SUMMARY:

• Result Oriented Linux/Unix System Administrator with 8+ years of experience in System Administration RedHat Linux Enterprise EL 4.x, 5.x, 6.x, Centos Linux 4.x, 5.x, Microsoft Windows Servers/XP, Sun Solaris, Suse11.x, 12.x, VMware vSphere ESX/ESXi environment.
• Experience in System Administration, System Builds, Server builds, Installs, Upgrades, Patches, Migration,Trouble Shooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine - tuning on Red HatLinux Systems.
• Strong experience in Backup, Job Scheduling, Disk Management, Logical Volume Management (LVM),Logical Partitioning and troubleshooting network problems.
• Experience working in AWS cloud environment like EC2 & EBS and involved in supporting AWS VPC.
• Experience on Installation of VMware ESX, ESXI migration of vm's from one host to another host and alsofrom one data storage to another data storage, Patch management.
• Certified in Unitrends Enterprise backup technology versions UEB 9.0.x
• Experience in configuring Oracle ASM disks and supporting Oracle RAC (Real Application Cluster) Database.
• Working knowledge on Automatic Storage Management (ASM) and experience in Shell scripting (Ksh/Csh/bash/Sed/Awk), Python, Ruby, Java and Perl scripting.
• Experience with configuration management and automation software such as Puppet and Chef.
• Worked on solaris10 containers, Zones for Virtualization.
• Helped to establish standards, policies and procedures for all aspects of UNIX server environment (e.g.,configuration, administration, documentation, etc.)
• Experience in Server build using Jumpstart, flash archive, NIM, Ignite and kickstart.
• Proficient DB administration (Oracle, DB2, Mongo, MySql, Sybase and SQL) knowledge for maintaining,pruning, and performing required DB tasks.
• Provided production support in an on-call rotation in a 24x7 environment.
• Hands on Experience in Designing, Creating/building and managed Dual VIO Server and VIO Client LPARS/DLPARS on P6 and P5 Hardware platforms through HMC V7.R3, V6 and HMC V5.
• Extensive experience in installation, configuration, maintenance, design, development, implementation, andsupport on IBM AIX and Linux RHEL 5/6 Environments.
• Expertise in understanding of error logging subsystem, resolving technical issues by Diagnosing, Problemdetermination, Troubleshooting and providing Root Cause Analysis.
• Expertise in NIM master server, NIM client setup and configuration, managed NIM resources and installedBOS on LPARS (IBM power6, power5 (p595, p590, p570, p550, p520) and power4 (p690, p630) machine).
• Experience in Virtualizations VMware ESX 4.0, and Red Hat KVM, Hyper-V.
• Expertise in Planning, Installation, Configuration and Maintenance of IBM HACMP V6.1 and V5.4
• Installed, Supported Application and middleware WebSphere Application Server, IBM HTTP/ Apache WebServers in AIX and LINUX environment for various projects.
• Installed and Configured VERITAS NetBackup on Sun E4500/Sun fire 440.
• Knowledge and experience in supporting different databases like DB2, Oracle on AIX and LINUX.
• Experience with LVM, User & System Resource Management, Job Scheduling and Paging SpaceManagement.
• Experience in Shell scripting to automate system administration jobs as per the customer requests.
• Experience in AIX System Dump Generation, resizing Dump devices, understanding error reports andcoordinating on different issues with AIX System Support Center.
• Experienced in monitoring system performance and check the status of the system using utilities such asSAR, TOPAS, VMSTAT, IOSTAT, NETSTAT etc.
• Expertise in implementation and designing of disaster backup and recovery plan.
• Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services andprotocols like NIS, NIS+, OSPF, LDAP, DNS, NFS, DHCP, NAS, FTP, SSH and SAMBA.
• Experienced in working with SAN team, Network team, Performance team, Capacity team, Application teamand Database team to resolve issues and provide excellent Customer Satisfaction.
• Excellent analytical, oral, written, communication and problem solving skills and good Team Player.

TECHNICAL SKILLS:

Operating Systems: Sun Solaris 8/9/10, Linux (Redhat 3/4/5/6, Suse 9/10), IBM AIX 6.1 5.3, 5.2, 5.1, HP-UX11.0, Windows NT 4.0, Windows

Hardware: HP PROLIANT DL360, DL360 G3, DL 385; IBM 326, IBM SUN 420R, SUN BLADE 1000, 1500;SUN E250/RACK, E450, E450R, DELL 4500, 6650; DELL POWEREDGE 4400, 6300, 6400, 6850, 750; DELLPRECISION 420 TWR, 530, HP J6700 RACK SYSTEM, SUNFIRE 280r, 4800, V210, V440, V480

Software: VERITAS File System, Veritas storage foundation suite, Netapp backup, Unitrends Enterprise andVirtual backup, Veritas NetBackup, MS Office SuiteLanguages/Scripting: C, C++, SQL, PL/SQL, Shell Programming, Perl.

Networking: NIS, NFS, DNS, ALE, DHCP, Telnet, TCP/IP, SMTP, FTP, TFTP, UDP, SSH

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

Backup: Veritas NetBackup 4.5, Solstice Disk Suite 4.1/4.2, MsBackup, Ufsdump, Ufsrestore, Sysback v4.2

Databases: MS Access, Oracle 9i, 10g, 11g, MySQL, IBM DB2.

Application Servers and Web Servers: 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 Veritas Clusters

Disk Arrays: Sun StorEdge 3130, 6320, 6120, EMC DMX 800 and 1000

Mail: SMTP, POP, IMAP, SENDMAIL.

WORK EXPERIENCE:

Confidential, Encino, CA

Sr. Linux Administrator

Responsibilities:

• Installation, configuration, patching and OS upgrades on RHEL 5.X/6.X.
• Installed and configured the NetApp storage disks in the environment.
• Responsible for transforming all the backups in the environment to the new Unitrends Enterprise backupsincluding the remote sites.
• Managed VMware ESX 5.5 hosts running RHEL 5,6 versions to consolidate the disks and configure thesnapshots.
• Working to with Solarwinds to monitor the environment and set the traps.
• Set up crontab to receive the monthly status and audit reports.
• Managed shared NFS, mounting and unmounting NFS server, NFS client on remote machine, CIFS shares,sharing remote file folder, starting and stopping the NFS services.
• Configuring and troubleshooting LAN and TCP/IP issues.
• Managed the User and Application Account creations, deletions, and setting up sudo access for DBA andapplication users.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systemsusing shell scripting.
• Used rysnc to sync all the data from production servers to application servers for the application teams totest on data.
• Built the scripts to shut down all the backup appliances to bring the backup environment down in case ofplanned power outage.
• Created a password less account super user account for all the NetApp storages.
• Installed and configured Splunk for all kind of Application, System logging so that various support team canget information online instead of combing the log files.
• Worked together with application teams to do changes to the configuration of the web servers.
• Worked together with DBA team to build the startup and shutdown scripts for DB2 databases.
• Mounted the cisco UCS on multiple racks and installed the APC's on the racks.
• Worked on Bulk loader errors for IBM DB2 content manager databases.
• Managed shared NFS, mounting and unmounting NFS server, NFS client on remote machine, sharing remotefile folder, starting and stopping the NFS services.

Sr. Linux Administrator

Responsibilities:

• Installation, Configuration, and OS upgrades on RHEL 5.X/6.X, SUSE 11.X, 12.X.
• Implemented and administered VMware ESX 3.5, 4.x for running the Windows, Centos, SUSE and Red HatLinux Servers on development and test servers.
• Creating volume groups, Logical volumes and extending them using LVM.
• Working with HP XEN Blade Servers. Attaching disk space from DL - 360 blade servers to VMs.
• Installed and managed VMware ESX 4.5 hosts running RHEL 5, 6 versions.
• Installed, configured, and maintained WebLogic and Oracle DB Servers on OS Redhat Linux and AIX.
• Responsible for setting up new instances, migrating existing services from physical servers to AWS cloud.
• Configure, monitor and, maintain AWS VPC environment.
• Working with SAN team for exporting shared volumes and mounting shared volumes.
• Installing and Configuring Puppet for configuration management.
• Responsible for configuring networking concepts like NIS, NFS, SAMBA, LDAP, SSH, SFTP, SNMP, DNS,DHCP, troubleshooting network problems such as TCP/IP, supporting users in solving their problems.
• Configuring, Managing and Scheduling CRONTABs for App Accounts and Backup management on a regularbasis.
• Assisted in setting-up proactive monitoring tool Nagios, monitoring and troubleshooting Nagios pipelineperformance.
• Monitoring infrastructure consisting of Nagios server with Centreon as web interface for configuration anddisplay of performance data.
• Installed and configured Apache Web Server.
• Installed and deployed Weblogic and WebSphere Application Servers (WAS).
• Worked on Puppet to organize and execute configuration plans on servers& worked on modules of Puppetfor its manifests on servers.
• Create, maintain and manage automated build processes for AWS environment using Puppet.
• Developed scripts for automating administration tasks like customizing user environment, and performancemonitoring and tuning with nfsstat, netstat, iostat, and vmstat.
• Created Bash shell scripts to monitor system resources and system maintenance and performed administrative tasks such as System startup/shutdown and Backup strategy.
• Created Disk groups, initialized physical disks to create a Veritas File System (VxFS).
• Import and Deport disks into a disk group depending on the requirement using the vxassist utility on theVeritas Volume Manager.
• Preparing servers for Oracle RAC installation, which includes creating ASM disks, kernel tuning, agentinstallation, adding NAS storage.
• Managed the User and Application Account creations, deletions, and setting up sudo access for DBA andapplication account access.
• Experience with running SQL queries on Oracle and MySQL.
• Administered security, users, group administration and daily backup and restore operations, networkingservice, performance and resource monitoring and Performed disaster recovery management procedures.
• Administration responsibilities include user, group, disk, and security management.
• Involved in preparation of functional and system specifications. Estimated storage requirements forapplications.
• Worked with DBA team for database performance issues, network related issues and with vendors forhardware related issues.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.
• Managed shared NFS, mounting and unmounting NFS server, NFS client on remote machine, sharing remotefile folder, starting and stopping the NFS services.

Environment: Red Hat Linux 5/6, SUSE 10/11, HP Blade Series servers, VMware ESXi 5.x, Veritas VolumeManager, Veritas Cluster Server, Samba, Cisco Unified Computing System (UCS) blade servers.

Linux Administrator

Responsibilities:

• Administration of RHEL 5/6 that includes installation, testing, tuning, upgrading and loading patches,troubleshooting both physical and virtual server issues.
• Creating, cloning Linux virtual Machines, templates using VMware Virtual Client 3.5 and migrating serversbetween ESX hosts.
• Working in AWS Cloud Environment like EC2 & EBS.
• Worked with API's like AWS API for Creating and Managing Amazon Cloud Instances using Puppet Codeand used puppet for provisioning.
• Installing Red Hat Linux using Kickstart and applying security policies for hardening the server based on thecompany policies.
• Experience in Developing KORN, BASH, JAVA, PERL, Python shell scripts to automate cron jobs and systemmaintenance. Scheduled cron jobs for job automation.
• Installed and Configured JBOSS on Java Applications
• Administration, package installation, configuration of CentOS 5/6.
• Created disk groups, volume groups and RAIDs using Veritas Volume Manager.
• Installing MySQL on Linux Server and securing installation.
• RPM and YUM package installations, patch and other server management.
• Creating new file systems, monitoring disk usage, checking and backup of log files administration andmonitoring the disk based file system.
• Configuring multipath, adding SAN and creating physical volumes, volume groups and logical volumes.
• Installing and configuring Apache and supporting them on Linux production servers.
• Kernel compilation and patch upgradation on Linux servers.
• Installed and configured Oracle 10g/11g RAC high availability.
• Administration and setting up Oracle RAC on RHEL 5.x servers.
• Familiar in LDAP setup and administration.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as iptables,firewall, and TCP wrappers and NMAP.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems usingshell scripting and CRONTABs.
• Creating and Managing Users / Group accounts and setup a user's work environment.
• Monitoring the File System, CPU load for better Performance and system performance parameters usingiostat, vmstat and prstat.
• Monitoring system performance, tune - up kernel parameter, adding/ removing/ administering hosts, users,disks on DNS / NIS domain.
• Performed the configuration and administration of DNS, NFS, SAN, NIS and database files.
• Worked on making DNS entries to establish connection from server to DB2 database.
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across the network.
• Creating VM snapshots for test and deployment as well as in production change controlled releaseenvironment.
• Installing and Managing Virtual Center 5.5.
• Closely worked with development and QA teams.

Environment: RHEL 5/6, Solaris 9/10, IBM blade servers, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, Oracle11g/10g/9i, VM ESX 3.x/2.x.

Unix/Linux Systems Administrator

Responsibilities:

• Installation, configuration and Operating System upgrade on, Red Hat Linux and Sun Solaris.
• Performed automated installations of Operating System using kick start for Red Hat Enterprise Linux 5/6 andJumpstart for Solaris 9/10 Linux.
• Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center
• Gathered VM requirements from the Performance Team, placed reservations and deployed Virtual Serversin Test and Production Environments.
• Experience in VMWARE ESXi 4/5 and vSphere and managed VM resource upgrades, Cold migration of VMfrom once vCenter to other.
• Handled and documented Cold Migration issues and IP, SAN, Network bandwidth and VLAN constraints.
• Performance Management & Tuning of RHEL.
• Responsible for multicasting of various components as a system administrator.
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Upgrading RHEL 5.0 to RHEL 5.5 using live upgrade and manual upgrade.
• Installing, configuring and maintaining AIX, SUSE LINUX servers including the logical partitioning on p690and p650 servers.
• Installed and Configured Web logic 8.x, 9.x on Java Applications.
• Experience managing various file systems using LVM and SVM and also configured file systems throughnetwork using NFS, NAS, SAN methodologies and installed RAID devices.
• Designed and configured large AIX systems (p6, p5), Building VIO Servers LPRAS, VIO Client LPARSinstalled VIOS 2.3, AIX6.1/5.3 using HMC V6 and installed/backup VIOS, BOS using NIM.
• Experience in working with puppet, git and chef.
• Installed and maintained OpenStack on KVM for cloud based applications.
• Extensive use of LVM, creating Volume Groups, Logical volumes, and disk mirroring.
• Performance Management & Tuning of AIX 5.2/5.3 UNIX Kernel.
• Hands on experience on various cloud computing products such as Amazon Web Services EC2 and VPC.
• Removing Virtual Resource from the VIO Server and Decommissioning the VIO Client LPARS.
• Implemented TSM backup Solution across the environment to backup the rootvg for all AIX servers.
• Perform User Account management, data backups, and users' logon support.
• Develop Shell scripts (Korn) for automating the batch jobs.
• Responsible for the upgrades to AIX and software packages and maintained them in accordance withestablished policies, procedures and service level agreements.
• Installed and Configure DNS, Websphere, DB2 Database and Tivoli storage manager.
• Work with DBAs on installation of DB2, restoration and performance tuning.
• Patched different software using RedHat Package Manager and YUM.
• Attend team meetings, change control meetings to update installation progress and upcoming changes inenvironment.

Environment: Red Hat Linux 5, VMware ESX, VERITAS NetBackup, Weblogic, Oracle 10g, Tivoli StorageManager(TSM), BMC Tools, NAGIOS, HPSM, JIRA

Unix/Linux/ AIX Administrator

Responsibilities:

• Linux administrators, responsible for providing for 24x7 support for production and responding to users' ticketsfrom remedy.
• Administered Network File Systems using Automounter and administering user and OS data files in NIS andNFS environment on both Redhat Linux and Solaris environments
• Log management like monitoring and cleaning the old log files.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on RedHat Linux.
• Experience in implementing High Availability Solutions using VERITAS Cluster, HP Service Guard andRedHat Cluster Server.
• System audit report like no. of logins, success & failures, running cron jobs.
• Administered VSphere and deployed several VMS based on the capacity consumption by the Host Groups.
• Worked with the VMWARE team and ensured all the VMs are working without any performance issues.
• Installing, configuring and Maintenance and Systems Development of AIX 4.3/5.1/5.2/5.3 servers.
• Day - to-Day trouble shooting for the end users on AIX 4.3/5L/5.1/ 5.2/ 5.3, RHEL 4/5 based applications.
• Backup the VIO Servers to the NIM and Upgrade 20 Virtual I/O (VIOS) from (1.3.x -1.5.2.1) and IBM EMC SAN(Symmetrix and Clarion) ODM (5.3.0.0 - 5.3.0.1 ) and Powerpath (4.5.3-b011 - 5.1.1) in dual LPAR Environmenton p670, p650, p595 and p590 and SUN SPARC machines.
• Extensive use of LVM, creating Volume Groups, Logical volumes, and disk mirroring, fixed the Problem ofStale and partially mirrored Logical volumes.
• Perform User Account management, data backups, and user's logon support.
• Worked on Projects of South Server help Issues and Pathmark Service requests. Resolving the path markuser requests and South server help ISSUES.
• HACMP V6.1 Administration and Support clusters topology using HACMP 5.3, Supported "Mutual takeover".On IBM p550 and p570.
• Efficient use and managing the LPARS using Web-SM tool HMC.
• SWAP box configuration, Implementation of disaster backup and recovery.
• Managed Patching and worked on Firmware Updates for Blades and Enclosures.
• Ability to write Perl and Shell scripting.
• Monitor system capacity and performance using standard tools such as topas, sar, vmstat, iostat, etc.
• Work with performance and DBAs on installation of DB2, restoration and performance issues.
• Attend team meetings, change control meetings to update installation progress and upcoming changes inenvironment.
• Provide 24x7 supports on call support on shift rotation basis.

Environment: RHEL 4/5/6, Solaris 8/9, IBM AIX, Veritas Volume Manager, Tivoli Storage Manager(TSM), SVM,Veritas Cluster Servers, Veritas Net backup, Oracle, RAC, LDAP.

UNIX/ Linux Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Linux and Solaris operating systems.
• Experience in Setting up and configuring Install Server, Configuration Server and Boot Server for Kickstartprocess & performed Kickstart to install OS on Linux boxes.
• Created User, Groups and File Systems as per database requirements.
• Configured and troubleshooting NFS, NIS, NIS+, DNS, DHCP, FTP, LDAP, and Samba, Apache servers inLinux Servers.
• Performed Memory and Swap management to improve optimization and performance of the servers.
• Experience in LDOM's server virtualization with Solaris zones and ZFS file systems and OVM.
• Experience in installing, configuring the Volume/File system management using Veritas Volume Manager,Logical Volume Manager (LVM), Solaris Volume Manager (SVM), ZFS Filesystem Management and VERITASFile System.
• Extensive use of LVM, creating Volume Groups, Logical volumes, and disk mirroring.
• Performance Management & Tuning of AIX 5.2/5.3, Linux 5 Kernel.
• Implemented TSM backup Solution across the environment to backup the rootvg for all AIX servers.
• Perform User Account management, data backups, and users' logon support.
• Develop Shell scripts (Korn) for automating the batch jobs.
• Build LPAR system and Installed AIX 5.3, 6.1 on LPAR using NIM Power 5, Power 6 systems.
• 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.
• Installation, configuration and maintenance DNS servers, Mail servers, FTP servers, NFS, NIS, NIS+ andSamba Web servers on Sun Solaris, and Linux platforms
• Working with NOC team for trouble shooting the production servers.
• Responsible for the upgrades to AIX and software packages and maintained them in accordance withestablished policies, procedures and service level agreements.
• Provide 24x7 supports on shift rotation basis on call.Environment: Linux, RHEL 5, SuSE 10, Solaris 10/9, Aix, VMware, Windows 2003/2000, Veritas VolumeManager 5.0, Veritas Netbackup 6.0.

Unix/Linux/AIX/Solaris Administrator

Responsibilities:

• Installing AIX 5.2/5.3 on pSeries p550, p650 and p630 and configuration and periodic update like applyingmaintenance level, fixes and microcode update and some more installation tasks like committing software,removing software, etc.
• Responsible for configuration of AIX servers, for maximum performance in a production environment,including kernel tuning and compiling, configuring systems with various raid, strip and mirroring configurations.
• 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 file systems.
• Implement, install and support high availability cluster on IBM RS6000 and pSeries platform (HACMP forAIX).
• Setup NFS Servers, Diskless clients and Auto clients and automated the file systems using direct and indirectmaps. Also setup entries in /etc/exports and mounted the disks onto the client systems by adding entries to /etc. / FSTAB.
• Open the Bridge call and bring other teams into the call for resolving the severe issues.
• Deploying the DSM agents into Windows/Solaris and Linux boxes.
• Implementation and maintenance of Veritas Cluster Server.
• Implemented DNS, NIS/NIS+ and NFS for administrative and project requirements.
• Installation of Apache, Weblogic and Tomcat Web servers.
• Creating SSL certificates for windows servers and Solaris/Linux Servers.
• Developed UNIX shell scripts using Korn, C Shell, Bash Scripting and Perl.
• Supporting databases like Oracle, Sybase, DB2 and Oracle RDBMS.
• Responsible for maintenance of development tools and utilities and to maintain Korn shell, Perl automationscripts.
• Experience in Shell scripting to automate system administration jobs as per the customer request.
• Setup of full networking services and protocols including NIS/NFS, DNS, SSH, DHCP, TCP/IP to insureoptimal networking, application.
• Managing the user environment by adding, modifying and removing user accounts from the environment andlimiting access to appropriate nodes.
• Test and install various patches (Fix Packs) on the servers to solve the problems encountered by theapplications running on the servers.
• Migrate application and other software modifications from the development environment to production.
• Specifying and procuring new AIX systems, hardware and software upgrades and peripherals.
• Optimize administration and distribution of space in disk for the Oracle database.
• Coordinate with DBAs, users, developers and vendors.
• Update data in inventory management package for Software and Hardware products.

Environment: SUN Solaris, Unix, Linux, E15K, E10K, E6500, SunfireV880, V440, Monitor, IBM Netcool, SunStorage Array D1000, A5000, T3, Storagetek L700, RS/6000 and P-Series Servers, Web logic, Veritas Volumemanager, Veritas net backup, Veritas cluster server.

System Administrator

Responsibilities:

• Installed and configured of Solaris and Linux servers using JUMPSTART and KICKSTART installation andperiodic Patch Upgrading using Live upgrade.
• Troubleshooting hardware and replacement of failed components running on LINUX and SOLARISenvironment, Performance tuning activities like allocation and monitoring of disk space using Disk Quotasystem.
• Installed and administered DNS, NIS, NIS+, NFS, and Send mail for centralization and firewall setup withintables on Solaris and Red Hat.
• Provided highly available data services to users using Solaris volume manager (SVM) and Logical volumemanager (LVM).
• Created and maintained user accounts and print queues, installed tools/compilers including GNU requiredby the environment and maintained their licenses.
• Resolved config issues and problems regarding NFS mounts, NIS maps, user ids, rpminstalls, and driverinstalls.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Used VERITAS Volume manager for Storage administration.

Environment: Fujitsu DRS6000 sparc server, SUN Solaris 2.7/8/9, RHEL 4/5, SUN Enterprise 3500, 6500,220R, 250, 420R, Enterprise workstations Ultra 80, Ultra 60, Ultra 10, Ultra 2, VERITAS Volume Manager 3.0.