Professional Summary:

• Over 7 years of experience excelling as a System administrator for LINUX RHEL,SUSE,CentOS,Debian, Ubuntu UNIX Sun Solaris, IBM AIX environment.
• Experience in working at the Linux kernel levels.
• Experience in Linux Internals like boot sector and setup, LILO, Processing kernel and Task Structure.
• Experience in Kernel debugging, RAID development, erasure encoding, performance analysis.
• Configured installed ALOM Advanced Lights Out Manager Load Balancer.
• Optimizing resource use and maximizing throughput in minimum response time with the help Load Balancing computer networking.
• Experience in Open Source Utilities like Nagios,DNS tools, Wireshark ,Apache.
• suspend or resume Network by using Load Balancing.
• Expertise with Root File System in Creating ,Populating, Analyzing and Wrapping.
• Expertise in regular backup and restore operations for AIX, Linux and Solaris Systems using Tivoli Storage Manager.
• In-depth knowledge of system backup methods, including SAN snapshots.
• Experience on Programming Languages like C and C .
• Experience with high-availability, high-performance, open source web technologies.
• Experience with cloud platforms, open source databases and caching layers.
• Experience with Cloud OS such as KVM, XEN, Ubuntu, Openstack.
• Experience with NFS network file system with NFSv4 and NFSv3.
• Working with the default Identity of IIS 6.0 NetworkServices .
• Expertise in console Linux debugger and a console Linux disassemble through IDA and offer local debugging of Linux executables.
• Experience in dealing with networking protocols L2 L3. Strong understanding of switching routing.
• Good production support at L2, L3.
• Ensuring the disaster recovery readiness of a service group using Veritas Operations Manager 6.x.
• Capability of handling all escalations in linux.
• Skillful and expert in installation, administration, patches, up-gradation, configuration, security issues, performance tuning and troubleshooting of RedHat Linux 4/5/6, Sun Solaris 8/9/10 IBM AIX 4.3, 5L, SuSe EL 7/8/9/10 and Window NT 4.0/2000/2003.
• Configure SSH configuration files and manually set sshd authorized keys file.
• Expert in Jumpstart and Kickstart Installation Methods.
• Experience with backup technologies like Tivoli Storage Manager 5.x, 6.x and Veritas Netbackup 4.x, 6.x, 7.x.
• Network Troubleshooting: Tcpdump, telnet, ping, netstat.
• Experience in Installing, Configuring, and Implementing Virtualization Environment Using VMware ESX and ESXi, Oracle Virtual Box, and Microsoft Virtual PC ..
• Worked on Various Storage hardware like EMC Symmetrix, EMC Connectrix and Hitachi data systems.
• Experienced working EMC tools like SRDF, Timefinder devices for DR and local replication.
• Experience managing NetApp filers by creating volumes on raid groups and aggregates and sharing to Windows and Unix servers using CIFS NFS.
• Experience working with Snapmirror Snapvaults for backup and replication purposes on NetApp devices.
• Disk space and File system management using Veritas Volume Manager 4.x, 5, Logical Volume Manager and Solaris Volume Manager, and ZFS.
• Managed dedicated management network, cabinet systems and appliances supporting global network and server management functions automation, tooling, monitoring, security, performance, configuration and change management
• Planned, documented and supported high availability, data replication, business persistent, fail-over, fall-back Solutions using Sun Cluster 3.1 and Veritas Cluster Server 4.0 and Red Hat cluster in SAN environment.
• Troubleshooting and problem resolution of system performance and networking
• Expertise in Installing and Managing LDAP, NIS, NFS, DHCP, SAMBA and DNS.
• Backup jobs, housekeeping, database, proprietary jobs using CRON, EMC legato Networker and BMC Control-M troubleshooting daily job problems.
• Strong experience and understanding of Auto mounts, TCP/IP, SMTP and Printer configurations.
• In Depth knowledge and experience with LDOMs, Server Domains and Zones/Containers.
• Extensive experience in installing, integrating, tuning, and troubleshooting Apache, Tomcat and Sun ONE.
• Monitoring the hosts and networks using NAGIOS, Zabbix, HP OpenView and BMC.
• Experience in Shell scripting using sh, ksh, bash and Perl
• JBoss including installation, configuration, management and troubleshooting.
• Worked with different database Environments like Oracle, IBM DB2, Sybase and Oracle RAC Real Application Clusters
• Experience in configuration of naming services like NIS, DNS etc. on Linux and Solaris
• Experience in architecting, setting up data centers and migration of applications.
• Provide rotation OnCall Support 24x7

Technical Skills:

Experience:

Confidential

Unix/Linux Administrator

Responsibilities:

• Installed, Configured and Maintained RedHat Linux IBM AIX 4.3, 5L, RedHat Enterprise Linux 4.x, 5.x 6.0 on SPARC, x86 and Blade Centers.
• Setup and maintain Windows 2008/2012 with Internet Information Server IIS to support internal and customer facing web applications and services.
• Experience in Linux Internals like boot sector and setup, LILO, Processing kernel and Task Structure.
• Expertise in Clustering and Load balancing of Web/application servers.
• Expertise in regular backup and restore operations for AIX, Linux and Solaris Systems using Tivoli Storage Manag
• Interacting with multiple internal application teams to create customized Load Balancing solutions.
• Experience of understanding of modern cloud compute, storage, networking , with an emphasis on OpenStack.
• Expertise with Root File System in Creating, Populating, Analyzing and Wrapping.
• Working with Cobbler and Puppet for configuration and deployment in large scale environment.
• Experience and working with NFS network file system with NFSv4 and NFSv3.
• A minimum of 3-5 years direct experience with IIS versions 6.0, 7.0, 7.5, or 8.
• Supported Redhat servers in Production and Development environments.
• Expertise in console Linux debugger and a console Linux disassemble through IDA and offer local debugging of Linux executables.
• Worked on Virtualizing Redhat servers using vSphere 4.1/5.0 and managed ESX servers using vCenter and also worked with ESX Cluster and vMotion.
• Configured Zones on the Solaris 10 servers created Resource pools and Fair share Scheduler for Containers and created Virtual Machines on VMware ESX 3.5.
• Develop systems testing, monitoring and automation tools in Perl, C, Java, and Shell Scripts
• experience in developing enterprise software applications in Perl.
• Developing Data structures, First-class functions, and an object-oriented programming with Perl.
• Created and Maintained Wholeroot and Sparse root Zones/Containers.
• Text processing, CGI programming, interfacing with databases, low-level applications with Perl
• Configures IPTABLES and SELINUX contexts for files and directories.
• Installed and Configured RedHat Linux Kickstart and booting from SAN.
• Implemented EC cloud technology in setting the new Linux and Solaris environment.
• Worked with IBM X series, HP DL and Dell Power Edge Model rack and blade centers like HP C6000 C7000.
• Configuration and administration of Fiber card Adapter's and handling of SAN SAN arrays, HITACHI, EMC .
• Performed SAN Migration on RHEL and solaris servers.
• Installed and configured openLDAP to create user accounts and to assign access permissions to the users.
• Worked with Centrify, on top of openLDAP which enables to consolidate all workstations, user, and group accounts in Active Directory and use Active Directory for all authentication, authorization, and directory services.
• Installation and configuration of backup clients like Avamar and Veritas Net Backup on Linux servers.
• Experience working with HP Openview client and server configuration.
• Experience in writing scripts to automate jobs and debugging scripts.
• Experience in using protocols like NIS, NFS, SSH, SFTP DNS.
• Installation of Solaris 9, 10 using Jumpstart, Redhat EL 4.x, 5 using Kickstart/PXE and SuSe Professional desktop 10x.
• Involved in Designing and Implementing host level migrations and replacing virtualization using P2P and P2V.
• Creating volumes using storage for VMAX Array on Redhat Solaris servers.
• Data migration at Host level using Red Hat LVM, Veritas Volume Manager and Solaris LVM
• Troubleshooting and performance tuning of various systems problems such as application, network and hardware related issues.
• Migrated different applications like SAP Databases like Oracle from HPUX to Linux.
• Administered Volume groups and volumes using HPUX and Linux volume manager
• Installation and support of various applications like Weblogic server 10, WebSphere 6.1 JBoss 4.x, Apache 2.x, Oracle 9i, 10g, Mysql, Informatica Power center 8 on Solaris 10.
• Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment, on RedHat Linux.
• Mirroring of root disks using Hardware Raid Controller on HP Dell HW.
• Managed 100 UNIX servers running RHEL, HPUX Solaris on Oracle HP and Dell server including blade centers.
• Experience configuring Emulex Converged Network Adaptors by Installing One Command on RHEL servers.

Environment: Solaris 8, 9, 10, Redhat EL 4.x, SuSe 10, IBM x3650,IBM HS22 Blade Center, IBM x232, IBM x236,T2000, T5120, E220, E420, 450, V240, V880/890, E3500, BL460c,, EMC-Avamar Netbackup, IBM Storage Manager, HP, Cisco Works, Korn shell, VMware ESX3.5, VMware Vsphere ESX4.0.

Confidential

Systems Administrator

Responsibilities:

• Involved in Design, Configuration Implementation of Unix/Linux migration activities from 3PAR to EMC SAN devices like VMAX.
• Involved in 24X7 Production support, Build and Migration Assignments.
• Worked Primarily on RHEL 4/5, HPUX, IBM AIX 4.3, 5L and Solaris 10 Operating Systems.
• Text processing, also in network programming with Perl Scripting.
• Involved in migration activities using Redhat LVM, Solaris LVM, Veritas and EMC Open Migrator.
• Installation of OAS Oracle Application Server on Solaris 9 and its configuration with oracle database.
• Experience running EMC GRABS, Heat and Sun Explorer reports and working with EMC and SUN/Oracle support teams.
• Migrated ORACLE RAC servers using system EMC Open migrator and effectively worked with the database team to bring up/down the databases.
• Writing Shell and Perl Scripting for automation of job.
• Tuning the kernel parameters based on the application/database requirement
• Used Veritas File system VxFS and Veritas Volume Manager VxVM to configure RAID 1 and RAID 5 Storage Systems on Sun Solaris.
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x.
• Installed and configured GFS cluster for holding databases.
• Manage user accounts for the team access for Redhat Satellite Server.
• Build channels and pull the packages from master Redhat Satellite Server.
• Troubleshooting hardware, software and configuration problems for various protocols and topologies.
• Configured open LDAP Red Hat Linux systems.
• Setup optimal RAID levels fault tolerance for protected data storage in NAS environments.
• Install and configure DHCP, DNS BIND, MS , web Apache, IIS , mail SMTP IMAP and POP3 and file servers.
• Created new slices, mounted new file systems and unmounted file systems.
• Expertise in troubleshooting the systems and managing LDAP, DNS, DHCP and NIS.
• Worked with different Active directory databases like Microsoft AD, Tivoli Directory server with LDAP.
• Worked on making DNS entries to establish connection from server to DB2 database.
• Experienced Cloud Computing technology.
• Performed patching, backups on multiple environments of Solaris, Linux and VMware.
• Assisted other UNIX administrators when help was needed i.e. creating UNIX accounts, writing scripts to perform system administrator functions, responding to trouble tickets, etc .
• Involved in preparation of functional and system specifications. Estimated storage requirements for applications.

Environment: Red Hat Linux RHEL 3/4/5/6 , Solaris 9/10, IBM AIX 4.3, 5L , Logical Volume Manager, Sun Veritas Cluster Server, Global File System, Redhat Cluster Servers.

Confidential

Linux Admin

Responsibilities:

• Installation and Configuration of RedHat Linux 5 , IBM AIX 4.3,5.1,5.2,5.3, 5L operating systems on large distributed environment.
• Setup and maintain Windows 2008/2012 with Internet Information Server IIS to support internal and customer facing web applications and services
• Implemented remote installation on RedHat Linux Kickstart and Solaris jumpstart/JET Servers.
• Installed and configured RedHat softwares and 3rd Party tools using RPM's and YUM on RedHat servers.
• Worked on SAN NAS devices like EMC Clariions, and NAS Devices like NetApp filers.
• Worked on NetApp filers like FAS 3240 6070 running DATA ONTAP 7.x.
• Involved in creating volumes on raid groups and aggregates and sharing to Windows and Unix servers using CIFS NFS.
• Worked on scripting using shell, bash and korn.
• Experience working Snapmirror Snapvaults for backup and replication purposes on NetApp devices.
• Upgraded Red Hat Linux servers from 5.2 to 5.4 and AIX from 5.2 to 5.3.
• Involved In Migration from AIX to Red Hat Linux.
• System performance tuning, User administration and security.
• Scheduling Backups, Monitoring taking failover test of Veritas Clustered servers.
• Monitoring of Tivoli storage logs for restarting any failed backups or trouble shooting any file permission or stale file handling problems.
• Ability to screen and diagnose client inquiries and problems troubleshoot to clearly understand problems root cause determination , solve problems, use operational documentation runbooks
• Responsible for administering and maintaining RedHat Linux work stations running Apache web server, iPlanet and SUN ONE.
• Configured and Administered JBOSS 4.2 on RedHat Linux and Solaris Cluster Nodes.
• Installed and configures Weblogic 9.1.
• Installed and Configured VMware ESX 3.5 server and Installed Red Hat Linux servers on top of it.
• Provided eCommerce application support for Java/J2EE based ATG Dynamo and Websphere environments.
• Worked in Data center environment for configuring new Hardware.

Environment: AIX 4.3,5.1,5.2,5.3,Solaris 8/9/10, RedHat Linux 5.x, IBM Blade center Servers HS20, HS21 ,

IBM P570, p590, 595MQSeries 5.0

Confidential

Unix/Linux Admin

Responsibilities:

• Installation and Configuration of RedHat Linux 5 , IBM AIX 4.3,5.1,5.2,5.3, 5L operating systems on large distributed environment.
• Configured Winbind on all Linux workstations which enables all the Linux users to be authenticated on Microsoft Windows 2000 Active Directory Server.
• Monitor T1, ISDN, 56k Modem, Router connectivity and all main servers' activity on a continuous basis.
• Used RPMs to install, update, verify, query and erase packages from Linux Servers.
• Authorized AIX users/groups to access various applications and troubleshot various user problems using management tools.
• Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA and UAT/Staging.
• Incident management for Unix Servers Solaris and Linux .
• Involved in migration AIX servers from 5.2 to 5.3.
• Primary responsibility includes building and supporting Solaris/ Red hat Linux 3, 4 servers.
• Extensive experience in installing, integrating, tuning, and troubleshooting Apache, Tomcat WebSphere and Weblogic application server.
• Installation and configuration Veritas Net Backup on Sun Severs and performing Backup using Veritas Net Backup.
• Sudo administration and Redhat Linux package administration using RPM and YUM.
• Involved in migration of projects from one flavor to another one.
• Worked on SAN using Tivoli Storage Manager in allocating filesystems to the end users and for managing storage.
• Involved in development, user acceptance, performance testing, production disaster recovery server.
• Worked in Data center environment for racking servers and configuring new Hardware.
• Worked with other IT teams, customers users , and other managers in helping build and implement systems and standards.

Environment: IBM AIX 4.3.3, 5.1, 5.2, Solaris 8/9/10, Red Hat Linux 4/5, Sun Enterprise Servers, SUN FIRE 6800/E6500/E4500, Sun Sparc1000, IBM RS/6000, Disk Suite.

Confidential

System Administrator

Responsibilities:

• Installation, Configuration, Upgradation and administration of Sun Solaris, RedHat Linux and HP-UX and IBM AIX
• User account management, managing passwords setting up quotas and support.
• Worked on Linux Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SFTP, SSH, LDAP integration.
• Managing file systems and disk management using Solstice Disksuite.
• Responsible for configuring real time backup of web servers.
• Log file was managed for troubleshooting and probable errors.
• Responsible for reviewing all open tickets, resolve and close any existing tickets.
• Document solutions for any issues that have not been discovered previously.
• Controlled the access to users by adding or removing the user from the groups as per the requirements by using LDAP.
• Troubleshooted LDAP server if there are any login issues for the users.
• Used LDAP to set Permissions, as an administrator to allow only certain people to access the LDAP database.
• Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.

Environment: Dell Hardware, RHEL 3.x, SUSE Linux, Sun Solaris 2.6 and 2.7, Sun E450, E250, Sparc stations 20, Switches, Hubs, Apache, IIS 4.0 and Oracle 8i.