SUMMARY:

• 6+ years of proven experience as System administrator on IBM Power Systems running AIX 6.1 and 7.1, Linux (RedHat), VMware 5.5, 6.0 and 6.5 .
• Experience in installation, configuration, tuning, security, backup, recovery and upgrades of IBM AIX and Linux (RedHat & SuSE).
• Installed, configured and upgraded Linux (RedHat & SuSE) and IBM AIX using Jump Start/Kick start and NIM Installation.
• Experience in upgrading VMware ESX, Xenserver, Hyper - V and KVM servers.
• Experience in virtualization of environment with VMware. Installation and configuration ESX hosts, Managing vcenters and datastores. Making new virtual machines, with Linux, Solaris, AIX, MAC OSX, and Windows, making templates, cloning VMs. Converting Physical to Virtual (P2V) and Virtual to Virtual (V2V) machines.
• Installation and configuration of httpd, udp, ftp servers, TCP/IP, DHCP, DNS, NFS, NIS and ZFS.
• Creating and maintaining users, profiles, security, and rights.
• Extensive experience in installation and configuration of Virtual I/O Server (VIOS) and VIO client LPAR’S, NIM Master server and NIM Clients.
• Experienced in configuring SAN bootable servers/LPARS, HBA card virtualization (NPIV), HEA/IVE virtualization (LHEA) and live partition mobility (LPM).
• Extensively worked on Linux OS Upgradation for patching Linux servers to latest versions and installing RPM packages using Satellite server, Yum and up2date.
• Expertise in Planning, Installation, Configuration and Maintenance of IBM HACMP 6.x and 7.x. Reduce planned downtime, Reduce unplanned downtime, Increase Maintenance and availability.
• Everyday administration tasks - adding and removing users, file, share permissions, trust management, replication management, server backups and server setups on AIX, LINUX (RHEL, SUSE). Server health monitoring and system tuning as per vendor recommendations.
• Experienced in Tivoli Storage Management, creating TSM Servers and Clients, performing/scheduling and troubleshooting backups.
• Experience working in NFS/NAS, Storage Area Networks (SAN), SSA disk storage environment. Extensively performed SAN Migration.

TECHNICAL SKILLS:

Operating Systems: Solaris 8/9/10, AIX 5.1, 6.1 and 7.1, RedHat 6/7, Windows NT4.0, Windows 2003/2008 R2, 2012.

Virtualization: VMware ESX server 5.5, 6.0, 6.5,, VCenter, VMotion, Storage VMotion, VMware Update Manager, VMware Tools, VMware Converter, creating templates, cloning VMs, managing datastores.

Backups: Netbackup, OS level Backup, Storage level backup.

Storage: Netapp, HP EVA, EMC Clariion, EMC Symmetrix, EMC ISILON, EMC VMAX

Hardware: Dell rack type R610, R710, R730xd, HP Proliant G7,G8 Series servers, Cisco UCS 6500 BLADES, IBM RS/6000, pSeries 630, 650

Languages: Shell scripting-Perl,, PowerShell, HTML

Databases: Oracle 11g/10g, SQL Server, MYSQL,Hadoop.

Network protocols: TCP/IP, DHCP, HTTP, VPN, DNS, NFS, NIS, SSH, SFTP, TCP/IP Configurations, DNS servers Setup, NFS Shares, SSH Tunneling, Firewalls, DHCP Server setup, Managing Certificates, creating VLANS

Tools: ORACE RAC 11g, VERITAS Netbackup 6.0, Centrify, VERITAS Storage Foundation Suite, Ansible, Chef, Puppet.

Web Technologies: Apache 2.0, Weblogic 8.1/10

Monitoring: Nagios core, NagiosXI, Opsview, Solar winds.

PROFESSIONAL EXPERIENCE:

Confidential, RI

Sr. UNIX/ AIX Administrator

Responsibilities:

• Worked with IBM p7 p770/750, IBM Blade center and Dell hardware (x86) connected to EMC/Hitachi storage area networks.
• Racked, installed and configured p7 p770/750 into a virtualized environment, DUAL VIOS 2.2 and AIX 6.1/7.1 LPARS with SAN bootable LPARS, HBA virtualization (NPIV) and Live Partition Mobility (LPM).
• Worked on storage consolidation project performed disk migration from DMX4 array - VMAX array, Hitachi/Clariion array - VMAX array.
• Install third party tool such as ESM, SSM, Guardium, ITM on AIX, Linux and Solaris servers.
• Support as primary tech for upgrade 11gR2 Oracle cluster on PROD environment.
• Built several AIX LPARS using virtual SCSI per the project requirements.
• Worked on various maintenance request (adding storage to data disk group, adding storage to 12 node VIO cluster and mapped to the clients).
• Worked on HMC and VIO servers ios upgrade.
• Worked on Semiannual OS patching on AIX servers across the environment(1000+ servers, co-ordination with the business to get the patch window)
• Utilization of PowerVM for Micro partitioning, shared CPU, VLAN Tagging, Multiple Shared Pools.
• Installed AIX servers by using Network Installation Manager (NIM) server to deploy AIX system images over the network. Moved AIX servers from old IBM p4/p5 hardware to newer IBM p6/p7 hardware.
• Performed AIX Migration of AIX 5.3/6.1 to 6.1/7.1 and AIX TL Upgrades. Applied Semiannual security patches and service packs to IBM AIX servers and RHEL6 servers.
• Responsible for automating and setting up weekly backups for HMCs, VIOS and AIX systems.
• Installed RHEL 5.x/6.x using Kick-start server on standalone servers and VMware environments.
• Performed various methods of AIX OS Installation/Migration using alternate disk installation (NIMADM), Network Installation Manager (NIM) and RHEL OS using Kick-Start server.
• Supported the upgrades of VIOs (2.1 to 2.2) and HMCs (7.3.5 to 7.7.x), backing up the VIOS, profiles, and HMC data.
• Planned, installed, configured and maintained 2 node Veritas VCS clusters, adding Resource groups, Volume groups, SAN disks in addition to various LVM activities and user management.
• Performed a failover or fail back of resources within a VCS6 Cluster from the primary node to secondary node and vice versa.
• Created new file systems and expanded the disk space allocated to an existing file system on AIX servers. Performed Production AIX application server file-system restores from backup media.
• Split and established the EMC Symmetrix SRDF link used to mirror data from the live site to the DR standby site.
• Worked with Application/DBA teams to setup basic infrastructure such as file-systems, users, groups, sudo access. Coordinated with SAN team to get the disk space allocated.

Confidential, St. Louis MO

Unix/Linux Administrator

Responsibilities:

• Responsible for installation, configuration, and administration of Red Hat Linux version 5 and 6, SUSE 10/11 and Centos.
• Installed and configured solaris 9 and 10 Virtual Servers in Vmware. Racking sun Solaris sparc servers T series. Installing OS on them by jumpstart servers and making non-global zones on their top. Backing up Global and non-global zones.
• Designed, supported, and maintained Oracle Real Application Clusters supporting business critical applications on HP blade system BL465c 8th generation, HP ProLiant DL385p 8th generation& Integrity Itanium2 platforms on RHEL 5 and 6.
• Expanded the environment from 128 to over 280 servers over the course of 12 months.
• Setup and maintained NFS, NIS, and TCP/IP network, configured the systems for TCP/IP Networking with the existing LAN, setting up SSH and SCP features between SUN systems and other Red Hat hosts.
• Maintained network and data security, maintained security compliance policies on the OS for SOX and internal audits.
• Planned and implemented migrations from one environment to another environment in OS level and Hardware level in Solaris and HP-UX servers.
• Worked on Puppet for automated deployment of applications and new servers.
• Installed and configured VMware ESX server instances for virtual server setup and deployment. Responsible for creating VMware virtual guests running Linux.
• Created detailed build docs and training procedure for the team so that they can make new virtual servers as well.
• Used RPM and YUM to update RHEL 6.
• Deployed Red Hat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.
• Experience with Kickstart Installations on Linux Red hat.
• Installed, maintained and fine-tuned the Apache-Tomcat server and Websphere Application Server in Linux Platform
• Working with data delivery teams to setup new Hadoop users.
• Installed Oozie workflow engine to run multiple MapReduce, Hive and pig jobs.
• Configured Metastore for Hadoop ecosystem and management tools.
• Created Bash shell scripts to monitor system resources and system maintenance.
• Wrote Perl scripts to generate statistics and monitor processes.
• Planning and installation of monitoring solutions Support with the migration of commercial systems to Nagios/Naemon/Icinga and the license cost savings related to it. Analysis and optimization of existing Nagios/Naemon/Icinga installations. Development of new plugins for your specific IT components. Hosting, services and support of your monitoring systems. Trainings and Workshops for special issues. Hosting, service and support of your monitoring systems.
• Deployed MySQL clusters using Red Hat Cluster Suite for supporting internal applications built on the LAMP stack and also trained the team for installation and configuration of LAMP.
• Automated system management tasks like user account creation, file system size monitoring, monitor system resources and system maintenance using Shell, and Perl scripts.
• Installed, configured & upgraded Websphere and application level troubleshooting for the Dev, Test& Production environment and maintained Load balancing.
• Worked with DBAs on installation of Oracle database.

Environment: RedHat Linux 5/4, Oracle 10g, HP Servers, SUN Servers, Linux, KickStart, Shell Script, Autosys, LDAP, EMC Storage SAN, VMware servers, Websphere.

Confidential, Atlanta, GA

System Administrator

• Installed, configuration and maintained Redhat Linux 5, 6 and 7 physical and virtual servers using Puppet.
• Provisioned new Redhat Linux enterprise servers using Redhat satellite and vmware templates.
• Installed and configured Dell Compellent SC4020 SAN controller with SC220 extensions for 100TB. Provisioned New SAN luns to all ESX hosts and SAN Attached physical servers.
• Configured new iSCSI networks and decommissioned old FC NICs for ESX hosts. Installed and configured Dual port 10GB iSCSI NICs in the ESX hosts. Migrated all SAN attached Linux Application and Database servers to New Dell Compellent and switched all SAN attached through FC to iSCSI NICs.
• Maintained multi-site Vmware ESX 5.5 and 6.0 Environment.
• Upgraded Dell R710, R610 Server hardware i.e. memories, Disk upgrade to SSD’s and Upgraded NICs for Vmware ESX hosts.
• Solely responsible for SAN storages in the company including DELL Compellent and HP SAN.
• Imported Attributes, passwords and schemas from Sun Directory servers 5.2 installed on Solaris Sparcs to 389 LDAP server. Configured multiple Nodes for 389 LDAP server on Linux Redhat as slaves to authenticate from Master Server on Solaris.
• Configured Multi Master Environment by creating master on 389 LDAP in order to retire old Sun Directory Master server and pointed all users and applications towards new LDAP servers to authenticate from.
• Managed and created servers for critical applications like ldap and active directory and identity management systems in amazon aws using templates.
• Write Custom manifests, Deployment managements and also managed patches using puppet.
• Managed Docker Containers, images on them and worked YAML.
• Provide support to Operating Systems, system/software patches and upgrades, user account maintenance. UNIX Applications Management: Installation and maintenance of online Calendar, Directory applications, and Apache Web servers.
• Security advisor of all servers via software firewalls; and, high availability of these systems.
• Provided secondary support for electronic mail services on UNIX and VMS systems and Administrate for Anti-virus & Anti-spam mail servers.
• Wrote Custom Puppet Manifests in order install, Configure and Maintain Linux and Unix Servers.
• Wrote Scripts to automate different tasks performed by application and database teams manually and helped automating testing.
• Installation and Maintenance of Big Brother server and PRTG server for monitoring switches, routers, and servers.
• Maintained of NetReg, DNS and DHCP servers, created external and internal translations manage firewalls, and create certificates.
• Provided technical expertise, advice, support, and services as needed on various projects like Active Directory migration from LDAP.

Environment: Linux Redhat (5, 6, 7), Sun Solaris, HP-UX 11.20, Apple servers, Windows (2003, 2008, 2012), Vmware (5.5, 6.0), Dell Compellent SC4020, Cisco Switches.

Confidential, Seattle, WA

Linux System Administrator

Responsibilities:

• Administered Linux servers Linux (RHEL /5/6/) running on physical and virtual servers.
• Designed, advocated, and implemented the reorganization of the DevOps team to scale the organization. Drove adoption of new patterns and processes to support the new model.
• Refactored puppet manifests to reflect best practices. Wrote Puppet modules for Installing, configuring, and monitoring.
• Working knowledge of security policies and regulations pertaining to information security.
• Responsible for Patching Linux Servers. Installed removed and updated and querying packages using RPM &YUM in Red Hat Linux.
• Collaborated with the EMC and NetApp team for the storage requirements.
• Linux systems administration in a 3000+ node, heterogeneous environment.
• Managed deployments across various IaaS providers: AWS,
• Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure.
• Deployed LDAP for centralized authentication.
• Use of ServiceNow for incident management, change control and task management Redesigned and redeployed the Nagios implementation.
• Responsible for packaging all code into RPMs.
• Installed and configured several hundred Red Hat Enterprise Linux in both Physical Blade utilizing Kickstart/PXE/Red Hat Satellite Server and VMware Vpshere.
• Create and configure LVM based EXT3 and OCFS2 based Cluster file systems on SAN LUNS utilizing Multipath to assist redundant path detection and increase I/O stability.
• Configuration Installation of Red hat Linux 5/6/7 and Oracle Enterprise Linux by using Kick Start, Red Hat Satellite Server and customized bash/perl scripts.
• Scheduled various regular, periodic, future and queue tasks by using Crontab.
• NFS management - take care of user accounts/groups, setting up of NFS environment
• Transferring files from one system to other using FTP and SFTP
• Monitoring server performance and troubleshooting server related problems to SNMP
• Processes administration and management like monitoring, start/stop/kill various processes/sub processes
• Monitor system performance parameters using iostat, vmstat, and fine-tuning
• Systems administration, maintenance, and monitoring various day-to-day operations
• Creating and maintaining user accounts, profiles, and security rights
• Installation, configuration, and maintenance of web servers, application servers, and database servers on Linux Servers.
• Linux system Administration, New build and configurations, OS migration, Creation and maintenance of Linux server and deploying security standards, SOC.
• Faulty Part replacements like Memory DIMM server battery replacement.
• Handling basic issues of Storage like disk replacement and raising service request with EMC.
• Performing the Change request for the different hardware part replacement.

Environment: Redhat 5, 6, EMC, Netapp, Vmware, AWS, Pupper, Nagios, Redhat satellite Server, SAN.