SUMMARY:

• 8+ years of IT experience in large - scale enterprise implementation and support. Proficient in various aspects of Server Computing Infrastructure Management.
• Experience in Installation, configuration, and System Administration with Linux (RHEL 7/6/5/4),Oracle Linux(5/6/7), SuSE Linux 10/11/12, Solaris (11/10/9/8), HP-UX (11.x/10.x), AIX (5.x/6.x) and Windows (2008/2003/2000/ NT) administration.
• Experience in building Servers using Kickstart for Linux, Jumpstart and Flash Archive for Solaris, Ignite for HP-UX and exposure to NIM for AIX installation.
• 2+ years of experience in cloud computing with AWS (Amazon Web Services).
• Experience in RPM Package Administration for installing, upgrading, and checking dependencies. Reconfiguring RPM database using RPM Build and creating YUM repository in Redhat Linux.
• Experience in building RedHat Network Satellite Server for automated installation of Linux boxes and creating image of Linux system with System Imager that automates Linux installs.
• Experience in installation, configuration and administration of VMware based virtual servers using ESX/ESXi servers, vSphere and Virtual Center.
• Experience with OpenStack (Nova, Swift, Glance, Keystone, Neutron)
• Experience in implementing and monitoring High Availability environment using VERITAS Cluster Server, Sun Cluster, RedHat Cluster Suite and HP Service Guard.
• Experience in installing, configuring the Volume/File system management using VERITAS Volume Manager (VxVM), Logical Volume Manager (LVM), Solaris Volume Manager (SVM), Veritas File System (VxFS).
• Experience in installing, configuring and maintaining Application Servers like WebSphere and Web Logic, Web Servers like Apache HTTP, JBOSS and Tomcat on UNIX operating systems.
• Experience in Implementing Virtualization Environment Using KVM, VMware ESX, ESXi and Xen.
• Extensively worked on administering NFS, NIS, NIS+, DNS, DHCP, LDAP, Mail servers, Samba Servers.
• Extensively worked on Solaris 10 Container technology, responsible for creating, configuring and maintaining ZONES and installing applications on individual zones (global and local zones).
• Performing software installation, upgrades/patches/packages, troubleshooting, and maintenance on UNIX & Linux Servers.
• Worked on DevOps, puppet, chef, Jenkins, Github tools.
• Experience in configuring Zettabyte File System (ZFS) pools, file systems, snapshots and clones in Solaris and Global File System (GFS) in Linux.
• Experience in installing and configuration of OpenStack.
• Experience in User & Security administration, multiple backup & recovery technologies (Snapshots, Disaster Recovery plan) and maintenance of various activities.
• Experience working on monitoring tools such as Zabbix, Nagios and Cacti on Unix servers.
• Expertise in configuring IPMP (IP network MultiPathing) in Solaris and Bonding in Linux.
• Capacity planning and recommending hardware for SAN (Storage Area Network) implementation and replacements.
• Experience working on Oracle Real Application Cluster (RAC) database, which provides highly available database solutions and supported MS SQL Server and DB2 teams.
• Experience on Live Upgrade, migrating from UFS root file system to ZFS file root system in Solaris.
• Involved in Data Center Migration for P2P, V2V and P2V environments.
• Storage experience in managing NAS, EMC storage arrays and Veritas Net Backup administration (VNB).
• Extensive experience in doing backup to tapes periodically using job scheduling Crontab & at
• Expertise in monitoring System resources and Kernel parameters to enhance the system performance.
• Extensive experience in Shell (Bourne, Korn) and knowledge of HTML, Java Scripts, SQL, Perl Scripting.
• Experience working with ITIL process (Change management, release management and problem management,

TECHNICAL SKILLS:

Operating System: RedHat Linux 3/4/5/6/7,Oracle Linux(5/6/7), SuSE 11/12, Ubuntu 14/15/16, Solaris 11/10/9/8, HP-UX (11.x), IBM AIX (5.x, 6.x) & Windows NT 4.0/2000/2003/ XP.

Hardware: Sun SPARC T5-2/M4000/M3000, Sun X3-2L, X4440, X4150, Sun Enterprise E 5000/5500/6500, Sun Fire 3800/4800/6800, E10K/15 Series server, TSeries, MSeries Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers.

Third Party Tools: Veritas Volume Manager, Logical Volume Manager, RAID, Redhat Cluster, Pacemaker. Veritas Cluster, Sun Cluster, HC Service Guard, VMware ESXi.

Cloud: Openstack, AWS

Automation Tools: Puppet, Chef, Github and Jenkins

Web Application Server: Apache, WebSphere, Weblogic, JBOSS, Tomcat.

Network/Naming Services: NIS, NFS, AutoFS, DNS, DHCP.

Storage: SAN, NAS, NetApp, DAS EMC Storage, iscsi, SAS, HP and IBM Storage, HDS.

Languages: Unix Shell Scripting, Perl Scripting, HTML.

PROFESSIONAL EXPERIENCE:

Confidential, California.

Sr. Unix/Linux Administrator

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of Linux, Sun-Solaris and Oracle Enterprise Linux operating systems.
• Performed automated installations of Operating System using Jumpstart for Solaris and kickstart for Linux.
• As a Linux administrator primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing, configuring & job scheduling using Cron.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Worked on installation, configuration, and volume/File system management using Logical Volume Manager (LVM), Veritas Volume Manager, and Solstice DiskSuite (Solaris Volume Manager)
• Installation and configuration of webservers like Tomcat, Apache and JBOSS on Linux servers.
• Installation and configuration of the Redhat Pacemaker Active/Failover cluster for IBM Informix application.
• Testing and validating all the servers hosted/built on VMware ESX/ESXi using enterprise systems.
• Built virtualized Linux servers on ESX and blade servers to host multiple applications on same chassis across different server hosts.
• Build and configured a virtual data center in the AWS cloud to support Enterprise Data Warehouse (EDW) hosting including Virtual Private Cloud (VPC), Public and Private Subnets, Security Groups, Route Tables, Elastic Load Balancer (ELB).
• Hands on experience in using AWS Cloud in various AWS services such as Redshift Cluster, Route 53 domain configuration.
• Used AWS cloud services such as EC2, auto-scaling and VPC to provision secure build, highly scalable and flexible systems that handled expected and unexpected load bursts.
• Setup and build AWS infrastructure various resources VPC, EC2, S3, IAM, EBS, Security Group, Auto Scaling, and RDS in Cloud Formation JSON templates.
• Maintained the user accounts (IAM), RDS, Route 53, VPC, RDB, Dynamo DB, SES, SQS and SNS services in AWS cloud.
• Working on VMware guest host operating system installation, Virtual Machine server provisioning post configuration of virtual machine.
• Responsible for setting up a disaster recovery plan for the servers, which includes in development of programs for synchronized backups.
• Installation, Configuration and Administration of Virtual Machines built on KVM and Xen
• Working on VMware ESX 5.5 and providing continuous support for Virtual Linux and Solaris VMs.
• Managing the system life cycle with Puppet and Manifests.
• Managing the OpenStack ecosystem provisioned for the Continuous Integration and Continuous Development,
• Creating of tenants and projects, creating of network stack, instances, security rules using Horizon dashboard in OpenStack.
• Managing the Controller node, multiple Nova compute nodes and Network nodes.
• Worked on DevOps, Puppet, Chef, Jenkins, Github tools.
• Working on Nagios monitoring tool to monitor server information.
• Cross Platform Migrating the IBM Informix application from Solaris to RedHat Linux.
• Preparing the Shell Scripts to manage the day to day admin activities.
• Modifying the 200 + IBM Informix Solaris Shell scripts to RedHat Linux compatible during migration.
• Created Filesystems from local storage as well as NFS partitions for application portability.
• Applied patches and packages on Linux servers using rpm RedHat Package Manager and yum tools.
• Ensured automatic startup of different services by using chkconfig.
• Providing day-to-day user administration like adding/deleting users and managing users queries. Shell programming for routine administration tasks.
• Monitoring the Unix servers using Cacti and Nagios tools.
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.
• Configuring the serves to monitoring for various hosts and service level checks.
• Configuring Veritas Netbackup client on the servers to take backup.
• Configuring backup schedule and related components in the Netbackup server.

Environment: SUN Enterprise- E 5000/5500/6500, SUNFIRE 3800/4800/6800, E10K/15K, TSeries, MSeries Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers, Solaris 11/10/9/8, HP-UX (11.00, 11.11, 11.23, 11.31), IBM Informix (11.7 FC8), RedHat Linux (RHEL 5/6/7), Splunk (5/6)

Confidential, Hartford, Connecticut,

Sr. Unix/Linux Administrator

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of Linux, Sun-Solaris, HP-UX and AIX operating systems.
• Performed automated installations of Operating System using Jumpstart for Solaris and kickstart for Linux.
• Perform testing, evaluation and validation of enterprise systems.
• Performed AWS Cloud administration managing EC2 instances, S3, SES and SNS services.
• Managed network security using Load balancer, Auto-scaling, security groups.
• Created Buckets in AWS and stored files. Enabled Versioning and security for files stored.
• Implemented and maintained monitoring and alerting of production and corporate servers/costs using Cloud Watch.
• Experience with monitoring with Cloud Watch, EC2, EBS, ELB, RDS, and S3 etc.,
• Worked on webservers like Apache and Tomcat.
• Performed Linux OS management tasks which include installing packages using rpm and zypper, creating soft and hard links, YaST for installing and configuration on SuSE operating systems
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Configured and maintained Network Multipathing in Linux and Solaris.
• Participated as an escalation point for 24*7 operations support for Splunk.
• Worked on installation, configuration and administration of Splunk on Unix, Linux and Windows-based platforms.
• Worked on backup tools like Amanda, Tivoli and Veritas Netbackup.
• Worked on installing and configuring VMware/ESX Servers for virtualizations.
• Worked on Nagios monitoring tool for server monitoring.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Added Service Groups and resources based on the requirement with appropriate dependencies. Documented the in change design/Architecture diagram of Veritas Cluster Servers, RHCS, & Service guard.
• Installation and configuration of Veritas Volume Manager, LVM, Veritas File System and Veritas Cluster Server.
• Installed the Operating System on Solaris and Linux servers and blades over the network.
• Built servers according to standards specified as per individual applications.
• Worked on Installing and configuring KVM, VMware ESX servers for Virtualizations.
• Built virtualized Linux servers on ESX and blade servers to host multiple applications on same chassis across different server hosts.
• Develop and maintain an expert level understanding of the OpenStack project ecosystem.
• Set up Linux servers for iSCSI LUN boot instead of using local hard disks.
• Provide 24 X 7 on-call UNIX and Linux support on a rotating schedule basis.
• Set up Sun servers for SAN-through-FCP boot as against booting from internal hard disks.
• Applied patches and packages on Linux servers using rpm RedHat Package Manager and yum tools.
• Configured Opsware on the servers for event tracking.
• Implemented virtual, integrated, management and proxy IPs on the machines to serve different purposes.
• Worked on enrolling new IDs into Dell Quest TPAM password manager and assisting team members to fetch root passwords.
• Develop, implement and maintain policies, procedures, and associated training plans for system administration, usage, and disaster recovery.
• Performed troubleshooting on filesystem failure, network failure and disk failures etc.,
• Setting up VSFTPD, NFS and Samba servers for file sharing.
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.
• Creation and scheduling of Cron Jobs such as for Backup, System Monitoring and removal of unnecessary files.
• Develop, Maintain, update various script for services (start, stop, restart, recycle, cron jobs) Unix based Korn shell, Bash.
• Updated & Running the various source code for migration & updating follow-up the release management.

Environment: SUN Enterprise- E 5000/5500/6500, SUNFIRE 3800/4800/6800, E10K/15K, TSeries, MSeries Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers, CISCO UCS, Solaris 11/10/9/8, HP-UX (11.00, 11.11, 11.23, 11.31), IBM AIX (5/6/7), RedHat Linux (RHEL 5/6/7), SuSE Linux (11/12), Splunk (5/6)

Confidential, Houston, Texas

Unix/Linux Administrator

Responsibilities:

• Administered 2000+ LINUX/UNIX servers running Redhat Linux 4/5/6, Sun Solaris 9/10 and Virtual machines hosted on ESXi servers.
• Installed & configured HP-UX 10.23/11.00 with administration and troubleshooting.
• Worked in Data Center provided 24/7 supporting IBM, HP, Sun blade.
• Installed and configured RedHat Linux, Solaris operating system using kickstart, Jumpstart.
• Installation, configuration and upgradation of Splunk.
• Managed multi-site Splunk Disaster Recovery ready systems, Splunk security including applying roles and capabilities
• Installation and configuration of Tomcat.
• Implemented SUDO, SSH and other security tools and security compliance.
• Worked on VMware guest host operating system installation Virtual Machine server provisioning post configuration of virtual machine
• Maintained VMs build using QEMU and KVM.
• Extensively worked on Configuration management tools such as Chef, Puppet for automation
• Installed, configured and troubleshooting of OpenStack on Linux Servers.
• Experience on various VERITAS suite of products on RHEL and Solaris.
• Volume Manager (VxVM) administration including installations, configuration of DG (Disk group), Volumes (Plex and VM), and file systems. Deport and Import of DG, Root disk Mirroring.
• Experience working on Logical Volume Management (LVM) administration on Linux. Created VGs, LVs, PVs and disk mirroring.
• Experience on working with Monitoring tools such as Nagios, Cacti etc.,
• High Availability using Redhat cluster and VERITAS Cluster Servers for failover and redundancy purpose.
• Administered Zones on Solaris 10, Solaris zones (containers) using utilities Zonecfg, Zoneadm etc.
• Solaris LDOM configuration and administration.
• Upgraded firmware on Oracle /SUN and IBM hardware such as X4140, M5000.
• Debugging issues that are effecting the environment and understanding the root cause and identify a solution.
• Extensively worked in data and database migration from older machine to latest configurations.
• Configured IPMP, NIC Bonding and Storage Multipathing
• Troubleshooting various problems, logging call with vendors - Oracle, Symantec and RedHat.
• Fixing the hardware failures by coordinating with management and vendors for an uninterruptible delivery.
• Experience in RPM Package Administration for installing, upgrading, and checking dependencies. Reconfiguring RPM database using RPM Build and creating YUM repository in Redhat Linux.
• Worked on server consolidation and migration from one data center to another data centers.
• Monitor performance and resource utilization of key systems and provide ongoing trend analysis for forecasting future resource requirements.
• Administering operating systems, hardware, and peripheral components, and maintain databases. - Replaced faulty - Disk, Power supply, CPU Fan, HBA cards.
• Debugging issues that are effecting the environment and understanding the root cause and identify a solution.
• Fixing the hardware failures by coordinating with management and vendors for an uninterruptible delivery.

Environment: CISCO UCS, HP/IBM Blades, Solaris 9/10, RHEL 4/5/6,M5000, T2000,T5140, SuSE Linux 10/11, Netra X1,X4140, X4170 SPARC T- 4 6800/4800/480, HP-UX 10.x/11.x,SunFire 6900, IBM x3550, x3650 M3, X4600,IBM series 670, p5 595, series Servers, Splunk (5/6).

Confidential

Unix/Linux Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Solaris, Linux (RedHat and SuSE), HP-UX, AIX operating system.
• Installation and configured Solaris 10 with Zone configuration.
• Installation and deployment of Splunk Add-ons.
• Administration of Splunk Configuration files along with CLI.
• Collection of log files using Splunk as per vendor request.
• Experience in configuring RedHat Cluster Suite, Veritas Cluster Server and HP Service Guard.
• Installation of patches and other software packages.
• Configuration of NIS, NIS+, DNS, NFS, Sendmail, Samba, Apache for multiple environments.
• Monitoring System performance and do kernel tuning to enhance the system Performance.
• Setup and maintained DNS Primary, Secondary, Cache-only servers, DHCP servers and DNS clients.
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.
• Understanding of Network protocols like TCP/IP, BGP, HSRP, NAT, IPsec and worked on configuring Hardware/Software firewalls.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Installation and configuration of Veritas Volume Manager, LVM, Veritas File System and Veritas Cluster Server.
• Creating and maintaining Users, Disk space, LVMs and Process Monitoring in Linux.
• Package management using RPM and errata using UP2DATE in Linux.
• Experience in Setting up and configuring Install Server, Configuration Server and Boot Server for Kickstart process & performed Kickstart to install OS on Several workstations
• Experience with Volume creation resizing and troubleshoot to the client’s development/production environment using Veritas volume Manager.
• Managed Physical and Logical volumes, Volume Groups in Linux.
• Application & Production Support and on call support.
• Troubleshooting hardware, software and configuration problems for various protocols and topologies.
• Updated & Running the various source codes for migration & updating follow-up the release management.
• Creation of users, mounting home folders and respond to general user queries regarding mounting issues.
• Configured NIS Master and Slave servers and NIS clients.
• Analyze, review and alter existing network to increase operational efficiency or adapt to new requirement.
• Co-ordinate with Backup Operator regarding daily backups, monitoring backup servers and perform database, application and system backup in the absence of the backup operators.

Environment: Solaris 8/9/10, RedHat Linux, SuSE Linux, HP-UX and AIX, VERITAS Volume Manager, VERITAS NetBackup, Veritas Cluster Server, Redhat Cluster Server, Splunk (5/6)

Confidential

Unix/Linux Systems Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Redhat/SuSE Linux, Solaris and HP-UX operating system.
• Configuring NFS, NIS, NIS+, DNS and LDAP.
• Worked on Data Center Migration Project. Migrated Linux/Unix Servers from one data center to other data center with minimal downtime.
• Excellent in Configuring and Administering NFS, SMTP, DHCP, samba in heterogeneous environment.
• Performed automated installations of Operating System using Kickstart and Jumpstart for Linux and Solaris.
• Configured and used yum repository for packages and patches installation in Linux environment.
• Worked on Installation and configuration of VMWare ESX servers.
• Installation and configuration of Logical Volume Manager, Veritas Volume Manager, Veritas File System, Veritas Cluster Server.
• Extensive use of volume management tool using Veritas Volume Manager to create disk groups, volumes with RAID architecture and layered volumes.
• Worked on Solaris 10 container technology, created local and global zones, modified local zone parameters, created file systems on local and global zones.
• Created Zettabyte file system (ZFS) in Solaris 10. Exported ZFS from local zones to local zones.
• Good working experience with Redhat Satellite Server for upgrading and patching Linux Servers.
• Expertise in setting up SystemImager software for automated installation, software distribution, configuration changes and operating system updates to a network of Linux Machines.
• Experience in Redhat Cluster Suite and Global Filesystem, Redhat Network Satellite Server.
• Creating Metadevices, soft partitions, mirroring the devices and metasets.
• Space allocation to the metadevices, detaching and clearing the devices if not in use.
• Troubleshooting and building high end servers and midrange servers.
• Performed automated installations of Operating System using Jumpstart for Solaris, kickstart for Linux and Ignite for HP-UX.

Environment: Solaris 10/9/8,Linux RHEL 5, SuSE Linux 10.x, Sun Fire 6800/E6500 Server, E10K/25K, T2000/T5000, M5000, HP L/N/RP series,IBM Power 570,p5 505 Express servers, Ubuntu 6.x/7.x, Apache,SAN EMC/HP/Hitachi, Veritas Volume Manager, VCS, Veritas Netbackup.

Confidential

Unix Administrator

Responsibilities:

• Installation, Configuration & Upgrade of operating systems Solaris and Linux and Installation of Packages and patches.
• Experience in Setting up and configuring Install Server, Configuration Server and Boot Server for Kickstart process & performed Kickstart to install OS on Several workstations.
• Proficient in configuration of VERITAS Cluster Server (VCS), fail over test of VCS groups, adding/modifying VCS resources such as File Systems.
• Disk and File system management through VERITAS Volume Manager & Solstice Disk Suite on Solaris and other logical volume manager for Solaris and Linux.
• Configuration of Hardware and Software RAID on Solaris and Linux Servers.
• Monitoring System performance and do kernel tuning to enhance the system Performance.
• Configurations of NIS, NFS, send mail on Solaris and Linux.
• Providing day-to-day user administration like adding, deleting and modifying users and groups.
• Interaction with vendors for Hardware and software supports.
• Troubleshoot network systems and recommend improvements to network.
• Responsible for day-to-day System Administration for SUN SOLARIS and Linux Servers.

Environment: Solaris 8,9, Linux, SUN Netra Servers, Sun Enterprise 4500/6500/450/420 R/250 server, Sunfire 6800/4800/480, E10k/15K.

Confidential

Linux Server Support

Responsibilities:

• Managed 1900+ servers.
• Experience installation RHEL OS and configured required network on HPC cluster.
• Installation, Configuration & Upgrade of Solaris, AIX, HP-UX, Linux (Redhat and SuSE) operating system.
• Installation, Configuration & Trouble Shooting of VXVM under sun Solaris 8, HP-UX.
• Managed HPC cluster, performed hardware, BIOS and application upgrade.
• Configured and managed Apache and JBOSS web servers and Managed software and hardware RAID systems.
• Managed user accounts and authentication process by NIS service.
• Managed System Firewall utilizing IP Chains, IP Tables. Implemented SSH SSL.
• Setup and maintained DNS Primary, Secondary, Cache-only servers, DHCP servers and DNS clients.
• Worked on incidents problem and change tickets related to AIX/Unix/Linux server.
• Managing (adding/removing) disks partitions.
• Worked on multiple accounts with Ticket assessment on daily basis.
• Administration and maintenance of WAS ND clusters (vertical, horizontal) and deployment of applications in highly available, load balanced production environments.
• Developed web service integration layer for Web Sphere Portal. Install and configure Web Sphere Portal on AIX, UNIX and Windows.
• Experienced in working with Network Engineers to install, manage, and configure NAS based storage and insure overall system and network security.
• Perform auditing on UNIX/Linux Servers for security compliance and monitoring.
• Department Security Focal (Managing all the security related issues like Apars, Cirats, Health.
• Worked on security activities (QEV, Health Checks, Priv ID revalidation & PAR) as per ITCS104.
• Worked on Server commission and Decommission.
• Monitoring the System Performance and tuning the kernel to enhance system performance.
• Worked on Backup issues and resolving as required.
• Job Scheduling and Automating process using CRON & AT.
• Worked on Citrix environment user management.
• Administration of Tivoli Storage manager 5.1.4 client.
• Performing User ID creation, modification, deletion and maintain server security.
• Monitoring system logs and the root's email for important messages such as errors and warnings or hardware fail errors .
• Setup and configured network TCP/IP on AIX including RPC connectivity for NFS. Created mount points for Server directories, and mounted these directories on AIX Servers.
• Configured and administrated LPARs. Installation of patches and other software packages.
• Configuration of NIS, NIS+, DNS, NFS, Send mail, Samba, Apache for multiple environments.
• Monitoring System performance and do kernel tuning to enhance the system Performance.
• Setup and maintained DNS Primary, Secondary, Cache-only servers, DHCP servers and DNS clients.
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.

Environment: Solaris 8, RHEL 3,4, AIX 5.2, HP-UX 11.x, Windows 2000/2003, Sun Enterprise Servers 6800, 4800, v480, E5500/E4500 and E3500,Veritas File System 3.0, ORACLE.