SUMMARY

• Over 5 years of experience specialized in System Administration working on Redhat Linux, Solaris, Suse Linux, AIX, Cent OS, OEL and Windows environments.
• Experience in administering Solaris & Linux. Experience in Installation, Configuration, Backup, Recovery, Maintenance, Support of Sun Solaris & Linux.
• Experience in Installing, upgrading and configuring RedHat Linux 3.x, 4.x, 5.x using Kickstart Servers and Interactive Installation.
• Experience in Installing, upgrading and configuring SUN Solaris 2.6, 7, 8, 9 and 10 on Sun Servers using Jumpstart Servers, Flash Archives and Interactive Installation.
• Worked with Database administrators to tune kernel for Oracle installations.
• Installation, administration, configuration and Testing of VIO Server and VIO client LPAR’S
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment.
• Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris volume manager.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Redhat Linux.
• Tested and configured AIX 5.3/6.1/7.3 on P 570/640/745/750 and P8 hardware with different applications
• Installation and upgradation of Packages and Patches configuration mgmt, version control, service pack. & reviewing connectivity issue regarding security problem.
• Expertise in migration from HACMP V4.4 to HACMP V4.5.
• Experience with Load Balancing, Fail overs and H/A of clusters
• Proficiency with configuration and maintenance of NFS, DNS, NIS/NIS+, DHCP, SMTP, and Networking with TCP/IP.
• Sun Solaris, IBM - AIX kernel Tuning, Performance Analysis and Load Balancing.
• UNIX security, Problem resolution and management, SMTP mail administrationand remote server support.
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, sendmail, ftp, remote access, security management and Security trouble shooting skills.
• Experience on Webservers such as iPlanet Webserver 6.0 /Sun one web server 6.3, 6.5, Tomcat 3.x, 4.x, 5.x & Apache Server 1.x,2.x and integrating them with Weblogic 10.x servers.
• Experience in administering VMware Infrastructure Client 3.5 and Vsphere 4.0.
• Experience in Installation of Oracle and MYSQL.
• Experience with Puppet 3.X and 4.X and also familiar with Razor technology
• Build and upgraded puppet master for each Dev/QA/Prod environment.
• Experience writing shell scripts to automate the administrative tasks and management using cron and at.
• Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
• Exposure to CI tools like Jenkins, Bamboo, Cruise Control.
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Used puppet for central management of Linux configuration files and software package management.
• Good understanding of F5’s Big IP hardware to load balance web and middle-tier servers.
• Experience Sun Solaris 10(Creation of Zones, Service Management Facilities, Virtualization, Container).
• Experience working in SAN environment like EMC Symmetrix DMX3, DMX4 and Clariion CX3 series arrays.
• Team player with good management, analytical, communication and interpersonal skills.

TECHNICAL SKILLS

Operating Systems: RHEL 3/4/5/6, Solaris Release 2.10/2.9/2.8/2.7 , IBM-AIX 5.X, Windows 98, Windows 2000 and NT.

Hardware: HP Proliant, Blade servers, Sun Servers E450, E3500, E4500, E5000, E6500, E10k, E15k, E25k, Sun Ultra’s, V210, V280, V490, V880, V6800 SUN Ray (1g Ultra Thin Client) SUN Desktops (SPARC 10, 5), DMX3 and DMX4 Storage Arrays, F5.

Software: Veritas Volume Manager 3.5/4/5, Veritas File System, Veritas Cluster Server 3.5, Veritas Netbackup 6.0, MS-Office/MS-Project.

Web/ Application Server: Tomcat, Apache DB2, Oracle.

Network Protocols: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP, and tcpdump..

Cluster Environment: Sun Cluster Servers 2.2, 3.1, 3.2 and VERITAS Cluster Servers 4.1.

Programming Languages: C, SQL, HTML, PHP, XML, Perl and Shell Programming, JSP, Python

PROFESSIONAL EXPERIENCE

Confidential, Stamford, CT

Linux Administrator

Responsibilities:

• Creating Zones, containers, LDOMs on Solaris servers, creating zpools, ZFS file system installing Oracle, Java based applications on them.
• Administration of RHEL and AS 4, 5, 6 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Installation, configuration, administration of Solaris 9, 10 on SPARC based servers using Jumpstart.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Installation and troubleshooting on VMware 5.5 running Linux (Redhat 3/4/5/6) .
• Experienced in Virtualization on Solaris Zones and VMware ESX Server environments.
• Experience in administration of enterprise applications with emphasis on IBM WebSphere Application Server 3.5/4.0/5.0, IBM HTTP Web Server Workload Management (WLM) in AIX, Sun Solaris, RED HAT Linux and Windows NT/2000/XP environment.
• Worked as AIX administrations and providing maintenance support to multiple IBM machines p5-520, p5-550, p5-570, p5-595, p7 750s and 770s running AIX 5.3/6.1/7.1.
• Disk Replacement Strategy on AIX
• Experience with F5 load balancers and Confidential load balancers (CSS and ACE)
• Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Monitoring and configuration of various servers using Puppet modules.
• Experience with F5 load balancer configurations, including migrating configurations and general troubleshooting of the F5 load balancers
• Administration, package installation, configuration of Oracle Enterprise Linux 5.4.
• Hands on experience in Scripting languages (e.g. shell, bash, perl)
• RPM and YUM package installations, patch and other server management.
• Responsible for Installation, Configuration Management, Maintenance and Systems Development of AIX Systems.
• Configured IBM P-series 570,550 and RS 6000 machines for production and test environments
• Responsible for the operation, maintenance and integrity of a distributed, networked AIX based environment
• Tested and configured AIX 5.3 on P 570 hardware with different applications.
• Responsible for creating LPAR/DLPAR/VIO.
• Installed, configured and tested VIOS
• Installed, configured and tested Logical Partitions technology (LPARS).
• Experienced in creating maintaining and managing LPARS, LPARS and VIO with HMC console
• Dlpar to manage all the resources.
• Responsible for NIM installation, setting up NIM servers, clients, define the resources, Alternate Disk Migration with NIM
• Familiar with gpfs file system.
• Created nsd and managed resources for gpfs cluster
• Adding removing node to the exsisting running cluster.
• Created gpfs file systems
• Installed and configured gpfs on AIX
• Software installation, updating and trouble shooting on systems using NIM and media
• Responsible for taking system backups mksysb, mkcd, savevg and savevgcd also make system backup through NIM, making archives of files and folders
• Responsible to setting up the VIO installation from the scratch on the IBM P5 servers.
• Installation/Administration of TCP/IP, NIS/NIS+, NFS, DNS, NTP, Auto mounts, Send mail and Print servers as per the client’s requirement.
• HACMP upgrade from v4.5 to 5.1 and then 5.1 to 5.2 configured HACMP cluster to keep applications running.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked on Openstack (Havana) which includes installation, configuration, administration of Virtual Machines, creating security groups, tenants, adding resources.
• Worked and performed data-center operations including rack mounting, cabling.
• Installation of Solaris 9, 10 on Sun Fire and Enterprise server using Jumpstart, custom configuration like installing packages, configuring services.
• Used puppet for central management of Linux configuration files and software package management.
• Worked on Solaris 10 container technology, created local and global zones, modified local zone parameters, created file systems on local and global zones.
• Tech, non-tech refresh of Linux servers including new hardware, OS upgrade, application installation.
• Experience with technology incidents, coordinating/running a bridge call, and bringing the correct resources.
• Worked on Networking concepts, IETF standards.
• Installing, configuring Redhat servers via Cobbler, automating scripts, tasks using Cobbler.
• Installation, configuration of MySQL 5.1 which includes creating database tables, updating table entries.
• Creating profiles, manifests for new servers, and pushing them to servers using puppet.
• Creating policies, jobs in HP Opsware, deploying them on linux, windows, solaris servers.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager & Solaris Volume Manager. File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Installing, configuring Jboss 4.3 on Linux, Unix servers, integrating it with Apache server.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Gathering requirements from customers and business partners and design, implement and provide solutions in building the environment.
• Installing and configuring Apache and supporting them on Linux production servers.
• Worked on E-commerce based application products related to internet marketing, credit card transactions, inventory management.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage on 2,3, 4 node clusters.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Installation and configuration of VxVM 5.0 and creating disk groups, volumes, increasing volumes.
• Coordinated with the Storage, Network and Hardware teams on server provisions (HP Proliant DL385/585 G5, G6 servers, and HP BL 465C G5 blade centers).
• Adding servers to the domain and monitoring them using spectrum, sitescope, cacti.
• Developed automated processes that run daily to check disk usage and perform clean up of file systems on UNIX environments using shell scripting and CRON.

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, Jboss 4.2, JDK 1.5,1.6,, VMware Virtual Client 3.5, VMware Insfrastructure 3.5.

Linux Administrator

Responsibilities:

• Jumpstarting Solaris 9, 10 on Sun servers, configuring servers. Configured/Maintained Zones, LDOMs, ZFS filesystem Sun Solaris 10 Servers.
• Installation and administration of RHEL 4, 5., 6.2 and Cent OS 5.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Planning and implementing system upgrades including hardware, operating system and periodical patches.
• Hands on experience in Incident Management.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine tuned system parameters and configurations to optimize performance and ensure security of systems.
• Pushing files, updates using CFEngine.
• Hands on experience onPythonand Shellscripting.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• Wrote programs in UNIX / Linux shell scripting (ie: Korn, Bourne or Bash).
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
• Creating profiles, manifests for new servers, and pushing them to servers using puppet.
• Responsible for maintenance of development tools, utilities and to maintain shell, Perl automation scripts.
• Installed, configured AIX 5.3, 6.1 on IBM p,x series servers using NIM, creating LPARs using HMC on p series servers.
• Creating virtual machines using Xen and deploying OS, managing hardware.
• Creating, installing, Weblogic Application servers, deploying WAR, JAR files on them installed on both Linux, Solaris servers.
• Installing, configuring Jboss 4.3 on Linux, Unix servers, integrating it with Apache server.
• Worked with project manager and auditing teams to implement PCI, SOX compliance.
• Monitoring of various services using Service Management Facility and Service Administration.
• Installing, configuring Veritas Netbackup 6.5 on linux, solaris servers, creating backup polices.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager. File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• Fine tuning of Servers and configuring networks for optimum performance.
• Organized various meetings with teams as mentioned above for tracking their requirements as inputs to get this done and designed the plan/steps involved and took user approvals.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Installation, maintenance and administration of Oracle and Db2 Server on Sun Servers.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.

Environment: Solaris 2.9 / 2.10, Red Hat Linux AS/EL 4.0, AIX 5.2, 5.3, Sun E10k, E25K, E4500, SunFire V440/880, DMX 3 & DMX4, Siteminder, SonicMQ 7.0, VxFS 4.1, VxVM 4.1, SVM.

Confidential

AIX/Systems Admin

Responsibilities:

• Created Zetabyte file system (ZFS) in Solaris 10. Created zpools. Exported ZFS from local zones to local zones.
• Installation and configuring of SUN Solaris and Linux servers.
• Involved in Building and configuring Solaris 8/9/10 using Jump start server and Red Hat Linux Servers using KickStart server as required for the project. Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Incident management for Unix Servers (Solaris, Linux).
• Installed and configured Solaris 10 servers with Zones and containers with Sun ZFS.
• Primary responsibility includes building and supporting Solaris/ Redhat Linux 3,4 servers.
• Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, HW and SW RAID, multipath, file systems, network using the tools NAGIOS and BMC Tools.
• Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and Weblogic application server.
• Implemented SUDO, SSH, security tools and implemented SOX (Sarbanes Oxley) security compliance.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, BEA Web logic etc.
• Extensive use of Veritas Volume Manager for Disk management, file system management on Sun Solaris environment.
• Installation and configuration Veritas NetBackup on Sun Severs and Backup using Veritas Net Backup.
• Extensive use of Korn shell, Bash for scripting.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VCS in heterogeneous SAN environment.
• Regular disk management like adding / replacing hot swappable drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Planned, scheduled and Implemented OS patches on both Solaris & Linux boxes as part maintenance.
• Worked with IT teams, users and other managers in helping build and implement systems and standards.
• Involved in migration of projects from one flavor to another one.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.

Environment: Solaris 8/9/10, Red Hat Linux 4/5, BMC Tools, NAGIOS, Veritas NetBackup, Korn Shell, Bash Scripting, Veritas Volume Manager, web servers, LDAP directory, Active Directory, BEA Web logic servers,SAN Switches, Apache, Tomcat WebSphere, Weblogic application server.