SUMMARY

• Over 6 years of strong experience in administration of System Administration in Red Hat Enterprise Linux, Sun Solaris & AIX Operating System with extensive implementation & troubleshooting experience.
• Experience on Red Hat ES/AS 3/4/5/6, Sun Solaris 7/8/9/10 implementation Administration, Installation & VM ware
• Over 5+ yearsof professional experience inOracle Database Administration.
• Experience in Migration from Sun Solaris to Linux.
• Worked on the backup, design, development, and support creation of all file system layouts, database environments, referential integrity relationships/constraints and security environment roles.
• Installation and support of Red Hat Enterprise Linux using Satellite server (Kickstart)
• Implementation and troubleshooting of Logical Volume manager in RHEL/CentOS servers
• Performing Kickstart to build out Linux environments to automate Linux installations with Kickstart to avoid manual intervention.
• Experience in Package Management using Red Hat RPM/YUM and Red Hat Satellite server.
• Upgradation of Kernel upgradation in Red Hat Linux and CentOS servers.
• Installed/Configured/Administrated VMware ESX - 3.5, ESX 4.1, 5.1 and migrated existing servers into VMware Infrastructure.
• Migration of ESX servers from one version to another version and also from one hardware to another.
• Managing VMware infrastructure/Vsphere clusters on production and UAT/Deployment environment’s
• Extensive knowledge on Vsphere/Vcenter/Vmotion operations in VMware and Hyper-v environment’s.
• Experience NIC bounding configuration in Linux and UNIX systems to increase the bandwidth or redundancy based on requirement by the application.
• Experience on load balancing. MTA applications QMAIL, POSTFIX., administration of High Availability clusters using RHCS, Multipath, Ethernet bonding and GFS cluster file system.
• LPM administration and performing the operational acceptance test in between the managed system to avoid any point of failures.
• Exposure of Storage migration of GPFS clusters without any downtime or any existing data loss
• Experience in IBM HACMP, POWER HA Cluster Expert in Power HA migrations from different version and in different methods.
• Administration, installations, upgrades, migrations, integrations, support, health checks, backups and custom configurations (JIRA cloud/standalone, Bugzilla, SVN, GIT, Bamboo, Fisheye, Trac etc)
• Performed DevOps for Linux, Aix, Mac and Windows platforms.
• Worked on DevOps tools like Jenkins,Maven for Build Management and puppet, chef and Ansible for Configuration Management and Nagios, splunk for Monitering and Log Management.
• Worked on version control system(VCS) like Git.
• Installation & Configuring VCS clusters with multiple nodes administration of VCS Clusters
• Experience in handling the HP service guard cluster, Configuration, Storage migration and managing the packages
• Installation, Configuration & administration of Red Hat Cluster and managing with the Conga
• Adding, deleting & Modifying of fence devices & failover domain, Managing high-availability services
• Experienced in Installing & Configuring the dual VIO in different POWER hardware with different version like 2.x
• Configuring SEA in dual VIO environment for providing continuous availability communication to the LPAR’s
• Sharing physical FC adapters to different LPAR’s through VIO server using NPIV and to ensure the LUNs are allocated successfully on the client LPAR’s
• WPAR configuration, migration of 5.2 & 5.3 as version WPAR’s. Exporting storage to WPAR from GLPAR and expert in troubleshooting WPAR
• Managing the hardware using the HMC and WebSM consoles & Upgrading of Hardware management console (HMC)
• Worked on Red Hat Cluster Servers (RHCS) with Global File System (GFS), worked on IPMP and NIC Bonding.
• VMware Infrastructure Installation & Configuration. Planning and Designing VMware VI3 (ESX3.x/ ESX4.x/ Thin ESX and VMware Virtual Center).
• Capacity planning & Performance Analysis, Uptime & Response time analysis.
• Hands on experience in performing routing administrative changes using CSPOC in a HACMP environment.
• Good understanding of error logging subsystem and Performance Monitoring tools like vmstat, iostat, netstat, topas, and lparstat on AIX.
• Administered JIRA as standalone as well as Split Instances with Database on a different server
• Worked on Jira ticketing tool for creating, managing and resolving issues and permission schemes.
• Installation and configuration of Solaris 10 container Technology, created and maintained Global & Non Global Zones and LDOMs.
• Extensively worked on advanced areas of IBM AIX such as Power VM, LPAR, HACMP etc.
• Experienced in configuring and supporting Logical Partitions/Micro Partitions (LPAR/DLPAR), via HMC (Hardware Management Console).
• Knowledge of scripting Perl & Networking and Communication devices, Server Utilities, TCP/IP, FTP
• Managing DNS, LDAP, FTP, Tomcat & Apache web servers on Linux (Red Hat ES 3.0) servers.
• Expertise in implementation and maintenance of Apache SMTP, DHCP, NFS, NIS, NIS+, LDAP, DNS, SAMBA, SQUID, Postfix, Send mail, FTP, Remote Access, Security Management & Security trouble shooting skills.
• Proven ability to Define System requirements, recommended solutions, analyse capacity and make appropriate modifications
• Experienced with the installation, configuration of volume management using VERITAS Volume Manager 5.1/6.0 and Solstice Disk Suite on Solaris and experienced in RAID configurations.
• Worked on Jenkins for Building and Monitoring deployment jobs related to software project.
• Day to day administration of the Development environment and Production and Test environment systems. 24x7 on-call support
• Strong appetite for learning new technologies with positive attitude

TECHNICAL SKILLS

Operating Systems: AIX 4.x/5.x/6.x/7.x, Sun Solaris 7/8/9/10, Linux 6/7.x, Windows 95/98/XP/NT Server, HP-UX 11.x

Hardware: IBM p-series p620, p630, p650, p690, p5-series p570, p575, p590 RS600043p, 44p servers/workstations. EMC SAN Clarion Symmetrix, FAST

Languages: Shell and Perl scripting

Databases: IBM DB2, MS-SQL Server, MS- Access

Tools: Web/App Servers Apache, IBM HTTP Server, Tomcat, HMC

Networking: TCP/IP, DNS, DHCP, LDAP, HTTP, SSH.

Other Skills: VIOS, HACMP 4.3.1, 4.4, HACMP/ES 4.5, 5.X, Samba, TWS Veritas Volume Manager, TSM, Tivoli Storage Management.

PROFESSIONAL EXPERIENCE

Confidential, Washington, DC

Unix/Linux Systems Administrator

Responsibilities:

• Installed, Deployed Red Hat Enterprise Linux 4.x/5.x/6.x/7.x, CentOS and installation of packages and patches for Red Hat Linux Servers.
• Installation, configuration, Troubleshooting and administration of AIX 5L, 6.1 & 7.1 operating systems.
• Installation, configuration and administration and management of HP UX 11.x.
• Involved in troubleshooting of Red Hat Linux server issues and hardware issues and replacements.
• Experience IaaS managing Amazon Web Services (AWS) infrastructure with automation and configuration management tools such as Chef, Ansible, Puppet, boto, or custom-built .designing cloud-hosted solutions, specific AWS product suite experience. Proficient in using all Amazon Web Services including EC2, EBS, EIP, ENI, ELB.
• Worked on Openstack and its components like Nova, Glance,Swift, Sahara and Manila.
• Worked on modules on Puppet for its manifests on servers.
• Working with the hardware vendors and application team for the faulty replacement and planning the downtimes accordingly
• Creating customized Kickstart profiles for each server and making ISO to build the server
• Applied patches every quarter regularly to meet audit requirements using Oracle Ops Center, Red Hat Satellite server, Up2Date, YUM, RPM tools.
• Performance Tuning and Management for Linux/AIX server and working with the application/database team to resolve issues.
• Worked on Installation/Configuration/Administrated VMware ESX-3.5, ESX 4.1, 5.1 and migrated existing servers into VMware Infrastructure
• Creating the file systems using Red Hat volume manager and performing the health check on regular basis for all Linux servers.
• Expert in areas of Oracle 11g/10g/9i/8i, PL/SQL, SQL, SQL*Plus, SQL*Loader.
• Worked with JIRA for creating Projects, assigning permissions to users and groups for the projects.
• Created Mail handlers and notification Schemes for JIRA.
• Expertise with hardware and management of IBM p-series p620, p630, p650, p690.
• Scanning the newly assigned LUNs to the serves and assigning them to volume group and increasing the file system using Red Hat volume manager
• Mounting & un-mounting the netapp storage LUNs to the Red Hat Linux servers and troubleshooting the issues encountered
• Planned and performed the upgrades on Linux and AIX operating systems and hardware maintenance on HP and POWER servers like increasing memory, disk, replacing failed hardware.
• Experienced Installing, Configuring and supporting VMware ESX 3.4 and 4 versions
• Built VIO servers and VIO clients on POWER7(770, 750), POWER6(595, 590, 570), p5 P520 and P550
• Configuration management including the building of LPARs using HMC, IVM and configuring the hardware devices that support them.
• Worked as a part of DevOps team, for automation, integration and to maintain and smooth flow of work process.
• Worked on DevOps team to make sure there is continuous delivery of work done.
• Worked on the Aws on services like Amazon EC2, Amazon S3, Amazon EBS, Auto Scaling.
• Worked on monitoring and alerting tools like Nagios, Splunk.
• Assigned the storage to servers using NPIVs( Virtual Fiber Channel)
• Experience in administration & configuration management of Puppet on Linux and puppet enterprise management from the console.
• Worked on puppet to organize and execute configuration plans on servers.
• Worked ON Git for version control System.
• Installed and configured VIO server via HMC, Extensively used LVM, created VGs, LVs, and disk mirroring.
• Measure, monitor and report systems capacity usage; create and adjust plans as required based on future demand and historical input.
• Work with development teams and business areas to plan future capacity requirements and hold regular meetings to review usage as well as create, revise, and report any new measurements required to manage mainframe or distributed environments.
• Provide drill down reporting for application teams to use in monitoring their application resource usage/performance.
• Promote involvement of application development teams to make recommended changes that improve program performance.
• Insure impact of software releases to system performance and resource utilization of distributed and mainframe platforms are acceptable during load testing.
• Doing capacity Assessment for new requests of servers ie calculating CPU and Memory for new servers according to the current/future Applications running on the system
• Performing Rightsizing Activity on the under and Over Utilized servers already in the environment for better performance.
• Checking daily Runaway processes in the environment and opening tickets for their removal.
• Determine present and future system capability needs and ensure systems are capable of handling anticipated current and future volume.
• Also performed Load balancing for servers.
• Repaired bad spots on the disk using repair and analyze. Used format and fdisk/Parted for disk configuration and disk crash recovery. Strong experience in Administration and Maintenance of WAS ND clusters (vertical, horizontal) and deployment of applications in highly available, load balanced production environments.
• Perform root cause analysis for service interruption recovery and create preventative measures.
• Provide technical leadership to appropriate personnel on system administration and engineering activities.
• Work with the team to manage the processing of incoming support requests ensuring effective and timely resolution of issues. Coordinate with other departments to ensure problems are satisfactorily resolved.
• Track and report progress against established milestones, metrics, and deliverables. Anticipate and address preventable issues that could impede progress. Adjust plans and schedules as necessary to meet changing business requirements.

Confidential, Wilmington, DE

Unix/Linux Administrator

Responsibilities:

• Documenting the procedures and standards for other administrators to follow. Setting up standards and solving complicated issues which were escalated to engineering team
• Discussing with the vendors for new hardware requirements, Built the AIX 6.1 Golden image and deploying it in the production environment.
• Experienced Installing, Configuring and supporting VMware ESX 3.4 and 4 versions
• Installation, configuration and administration of HP UX 11.x.
• Servers Installed, Configured and Maintaining of Red Hat Enterprise Linux 3.0,4.0,5.X,
• Using Logical Volume Manager for dynamically extending and reducing partition sizes as when the need arise increasing the size of the file systems
• Exposure to managing servers remotely using DRAC, ILOM, VNC
• Performing User Administration, Updating the patches for all the servers
• Performance & Capacity management. Configuring Network printers using CUPS
• Implementing Quota on file systems & ACL’s for the files & directories
• Web server’s administration and creating virtual hosts & certifications using SSL, Administration of Tomcat with deploying the web applications
• Installed and Configured SAMBA Server in Linux for accessing the shared files from the windows environment
• Configuring and Maintaining of Network File Systems like (N.F.S) and Auto mount in networks
• Installing and updating Kernel. Created and modified swap files and added swap space
• NTP server and client configuration for synchronization of timing of all the server with the NTP server
• Experienced in building VIOS 2.1.2.12 golden image and installing in production environment.
• Installation of VIOS 1.5.2.5, VIOS Fixpack 11.1 Service Pack via NIM Server. Installation of AIX 5.3 on all VIOC/LPAR Clients, installation via NIM Sever
• Worked on p & RS6000 frames, Experienced in documenting the standard hardware requirements for POWER7 (p750, p770) and installing AIX 6.1 on POWER7 hardware.
• MTA applications QMAIL, POSTFIX., administration of High Availability clusters using RHCS, Multipath, Ethernet bonding and GFS cluster file system
• Extensively worked on Mirroring of local disks as well as SAN disks to maintain Data Redundancy and performed Data Replication
• Extensively work with SAN storage EMC VMAX, IBM SVC and DS series, EMC Clariion, Symmetrix and Hitachi storage solutions.
• Experience IaaS managing Amazon Web Services (AWS) infrastructure with automation and configuration management tools such as Chef, Ansible, Puppet, boto.
• Worked on setup for Puppet Agents and Puppet Master.
• Worked on Puppet to organize and execute configuration plans on servers.
• Configured 4.1TB and 3.2 TB of EMC SAN Storage for HACMP Cluster nodes and extended physical volumes on VG and increased file system sizes
• Installation of RHEL on the IBM blades, X series (3850’s and 3650’s),and on Dell Power Edge servers (1950,2950,2900)servers either by ISO boot or PXE boot using the kickstart server
• Installation of RHEL on IBM Blade servers HS21 and JS22
• Day to day support and troubleshooting of RHEL, Performed basic Troubleshooting. Creating the Linux file system. Updated the Linux Kernel from an RPM.
• Experienced in performing TL upgrades applying service packs on AIX 5.3/6.1
• Zoned and configured SAN Storage and extended LUNs VG in vanilla and Cluster environment.
• Configured EMC SAN for HACMP Clusters and ensured the LUNS are zoned as shared between the nodes
• Logical Partitions of VIOS and VIOC on Blade server and pSeries frame
• Installation of Veritas volume manager on sun Solaris operating system,
• IBM’s SVC and DS series, Power Path installation and involved in Storage Area Network (SAN) administration.
• 24x7 on call production support
• Installation and configuration of VIO servers and updating system firmware by using HMC along with Logical Partition technology (LPARs).
• Building and configuring AIX V6.1, 5.3 on LPARs using NIM.
• Single point of contact for HACMP Cluster issues & support
• Designed & built a five node HACMP cluster from scratch and added nodes to two different existing clusters.
• Checking the status of the cluster and monitored the error log files of the HACMP.
• Created and applied a cluster snapshot during cluster failure because of configuration changes in HACMP cluster environment.
• Wrote shell scripts for HACMP to automatically start, stop the database and application when the server failover or fallback.
• Shell scripts to gather server resource statistics like available memory, processors etc from multiple servers.
• Documenting each and every procedure and uploading the Documents on the Internal Web Portal of the Company for Team Reference.

Confidential, Cincinnati, OH

UNIX Administrator

Responsibilities:

• Build new Solaris, Linux and AIX servers. Upgrade and patch existing servers. Compile, built and upgrade Linux kernel. Setup and test Red Hat Linux cluster. Configure Solaris zones (containers).
• Conduct project planning and status reporting. Independently setup and administer DNS, DHCP and DDNS (Dynamic DNS) using ISC software, including DNS security using TSIG, chroot-BIND
• Setup and administer VERITAS Volume Manager for NAS, SAN. Setup and administer VERITAS NetBackup& Cluster Server (VCS) for risk mitigation and disaster recovery.
• Setup Solaris Custom Jumpstart server and clients and implement Jumpstart installation.
• Worked with Telnet, FTP, TCP/IP, iLink, rlogin, used to inter-operate hosts.
• Worked on load balancing to divert traffic which intact system failure.
• Contact various systems administration works under Solaris, Red Hat Linux environments.
• Setup and administer NavisRadius/Vital AAA RADIUS servers for ISDN, PPP and VPN services.
• Worked as System Administrator in UNIX supporting infrastructure environment comprising SUN- SPARC Server 5s, SPARC Server 20s, and E450s, E250s E3000s, E3500s, E5500s and A5000 storage array
• Installed managed Veritas Volume Manager 3.5 (VxVM) on Solaris 5.9
• Created Role Based Access Control (RBAC) for users
• Performed regular day-to-day system administrative tasks including User Management, Backup, Network Management, and Software Management including Patch updates, Documentation etc.
• Supported Disk Volume Management- creating volumes with Solaris Volume Manager, VERITAS Volume Manager, and VERITAS File System.
• Worked on OS upgrade plan for Solaris on development and production servers.
• Recommend system configurations for clients based on estimated requirements. Installed, maintained and troubleshoot NFS.
• Implemented and maintained Backup strategy with automated scripts and using UFSDUMP, BACKUP, tar, cpio etc.
• Performed reorganization of disk partitions, file systems, hard disk addition, and memory upgrade.
• Performance monitoring done with conventional tools such as SAR, iostat & netstat. Monitored system activities, log maintenance, and disk space management. Solved problems involving DMS (dead man switch) timeout in HACMP environment.
• Administer TSM server environment(s) to monitor and manage enterprise data management processes. Monitor TSM application server processes and errors to ensure overall system performance and stability.
• Worked with Veritas Volume Manager, Veritas Net Backup and Sun Cluster Server in all environments.
• IBM RS/6000 SP System Software Maintenance AIX System Dump Generation and sending System Dump to AIX System Support Center.
• Upgraded HACMP V4.3 nodes by doing a node by node migration without changing the cluster setup.
• Configured HACMP 4.5 to monitor, detect and react to failure events, allowing the system to stay available during random, unexpected software problems and also configured to react to hundreds of system events.
• Involved in configuring cascading, mutual takeover and rotating modes of operation of the HACMP and HACMP/ES products.
• Expertise in using the cluster snapshot utility to record the HACMP odm configuration information.
• Worked on server builds for AIX, SUN Solaris and Windows platforms to achieve 100% acceptance on all the Disaster Recovery projects.
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and linux servers.
• Defined and setup network printers, and install client/server applications. Define/setup network protocols, Network File Services (NFS), and Network Information Services (NIS).
• Performance Management & Tuning of AIX Kernel. Installation of Printers, Hard disk and Tape Drives etc.
• Security, users, groups’ administration and daily backup and restore operations. Implemented Crontabs, Shell Scripts for automatic back -up. Networking service, performance, and resource monitoring.

Confidential, Dallas, TX

UNIX Administrator

Responsibilities:

• System installation and Configuration of AIX 5.x operating system and Red Hat 3.x, 4.x & 5.x servers
• User Administration, adding and removing user accounts, changing user attributes.
• Monitoring the CPU statistics and memory. Managed IBM PSeries servers installed with AIX.
• File system monitoring and checking error messages.
• Working with paging spaces, creating, increase, decrease paging spaces as per requirement.
• Performed other standard system admin tasks such as system monitoring, performance usage, network support and user support.
• Configure VG’s and LV’s, Extended LV’s for file system growth needs using LVM commands.
• Working with mksysb for rootvg and savevg for user defined Volume Groups.
• Fixing corrupted BLV. Daily management administration.
• Working on FTP and SSH for remote administration. Monitoring server performance, disk utilization and failedlogins.
• Diagnosing and troubleshooting problems related to Operating System and all hardware.
• Patch Management. Problem determination in File systems and Logical Volumes.
• Creating and managing the default and User defined Paging Spaces.
• Creating and updating the Crontab files. NFS Administration. System Resource Controller Administration.
• Corporate client support for mission critical environments
• Responsible for 200 Linux Servers: RHEL 3.0, 4.0 & 5.x, Bash scripting for automation of tasks.
• Day to day problem handling like related to File Systems, Disk, Memory, CPU, Network etc
• Installation and configuration of many OpenSource Packages for company and Clients (SugarCRM, eGroupware, Openfire, Spark, RT, etc. ) .
• Did handle day-to-day IT functions like user/quota/permission/ACL/LVM management.
• Configuration and management of MySQL