SUMMARY

• Over 7+ years of System and Network Administration experience in Installation, Configuration, Customization, Management and Administration of RHEL 4/5/6, Sun Solaris 8/9/10/11, SUSE Linux, Windows and AIX.
• Experienced in installing, managing Esxi 4.x and 5.x. ( VMware barebone - guest OS)
• Expertise with automating the provision of OS by using Jumpstart for Solaris and Kickstart for Redhat.
• Highly experienced in installing and configuring Volume Management by using Veritas Volume Manager (VxVM)
• Experienced in Solaris Volume Manager (SVM) in Solaris and Logical Volume Manager (LVM) in Linux.
• Hands on experience in RedHat Clustering and Veritas Cluster Server 4.0, 5.0.
• Experienced in installation of Packages and Patches in both RedHat Satellite Sever and Solaris Server.
• Hands on experience in creating and managing all kind of file systems like VxFS, ZFS, Ext3, Ext4, UFS.
• Created Logical Volumes, Logical Volume Groups and manipulated them as required.
• Configured Raid-0, Raid-1, and Raid-5 in order to combine and mirror the disk space of storage devices.
• Comfortable in working with backup and recovery suite like Veritas Netbackup and performing Disaster recovery and patching.
• Experienced in working with NIS, LDAP, NFS, Sendmail, Weblogic, DNS, DHCP Server, and TCP/IP services.
• Highly experienced in Hardware setup, creating filesystems, and managing paging/swap space.
• Hands on experience of administrative tools like ILOM and KVM to manage change request in data center, and emergency situations.
• Strong knowledge of system performance and monitoring tools like Nagios,GNOME and so on.
• Troubleshoot problem related to bootloaders like GRUB and performed PXE boot.
• Configured SUDO, granting permissions to users, creating and administrating control and guest domains on LDOMs.
• Hands on experience in installation, configuration and support of Websphere, JBOSS, Tomcat, FTP, Apache Web server, LDAP and mail server.
• Highly experienced on installation and configuration of automating tool like Puppet and Jenkins.
• Experience on Amazon cloud computing using Amazon Web Services (AWS)
• Configured Bonding in Linux and IPMP in Solaris.
• Highly experienced on installation and configuration of third party software and services.
• High level of problem solving and conflict resolution capabilities.
• Experienced in round the clock service (24/7), and on call support.
• Ability to lead technical discussions and projects in an organized manner
• Ability to document strategies and designs and present these ideas to management with cost/benefit analysis
• Strong interpersonal skills, including both written and verbal communications.

TECHNICAL SKILLS

Hardware: Intel Based Servers/PCs, Dell/ HP servers and PCS. Sun Ultra 5/10/60, Sun Enterprise (E250/450, 5000, 6500),Sun A1000/D1000/3310FC Array, Netra T1, Sun Fire (280R, 420R, V210, V240, V250, V440, V480, V490, V880, V890),Linux Server, DellPowerEdge 6300/500, Backup devices, Ethernet Hubs, Routers, LAN Testers, Cable Modems, Terminal Servers and Print Servers

Operating Systems: Linux (Red Hat 4.x, 5.x, 6.x, SUSE 9,10,11, Unix-Sun Solaris 8,9,10,11 VMware ESX 3.5,4.0, Ubuntu 10.04/12.04 , AIX 5.x, 6.x, 7.x

Programming Languages: C, C++, Unix Shell scripting ( - ksh, Bash and csh), Python, Perl and Ruby scripting, HTML, PL/SQL

Networking Environment: NFS, AutoFS, NIS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP

Disk Management: Logical Volume Manager, Veritas Volume Manager 4x, 5.x, 6.x, Solaris Volume Manager

File Systems: ZFS, UFS, VxFS, Ext, Ext2, ext3, ext4

Monitoring Tools: Nagios, Tivoli, snmp, splunk, Xymon

Web/Application Servers: Amazon Web servers (AWS), JBoss4.x, 5.x, Web Logic 8.x, 9.0, 10, WebSphere 5.x, 6.x, Apache Server 1.3.x, 2.2.x, Apache Tomcat 5.x, 6.x, 7.x

PROFESSIONAL EXPERIENCE

Confidential, VA

Unix/Linux Administrator

Responsibilities:

• Managed KickStart server for RedHat Linux 5.x, 6.x and Jumpstart server for Solaris 10.
• Configured and maintained volume groups, logical volumes and extended logical volumes using Logical Volume Manager and, VERITAS Volume Manager/ VxFS and Solaris Volume Manger.
• Installed and configured Zones/Containers, and used SMF for the administration of the services on Solaris 10.
• Configured RAID mirroring of root disk using SVM in Solaris 10.
• Created and restored snapshots, vMotion, and DRS maintenance of RedHat/Oracle Enterprise Linux servers in VMware.
• Created and administered the guest OS on LDOMs and added virtual memory and hard disk to the guest OS.
• Managed users and groups on a large scale in NIS and LDAP environments.
• Used RedHat Satellite Server for upgrading and installing Packages and patches in RedHat; and managing channels.
• Build high availability servers using VERITAS cluster server 5.0 involving 2-5 nodes.
• Managed the entire infrastructure with puppet by setting up puppet master and slaves; and TPM (Tivoli Provisioning Manager).
• Used bash, awk, and sed to automate most of the daily activities like log monitoring, log rotation and purging, proactive system monitoring with disk error detection.
• Configured NIC Bonding on Linux and IPMP on Solaris.
• Implemented SSH for secure transfers and implementation of PKI between servers to enable Password less logins between servers.
• Coordinated with vendor to determine RCA on few occasions; by facilitating Veritas and Solaris explorers, core dumps, and RHEL sosreports.
• Configured and used ALOM / ILOM / XSCF onSunand ILO's HP Hardwares. Also used several concentrators like lantronix, black box, to gain console accesses.
• Worked with storage teams to configure EMC SAN, NAS and iSCSI configuration.
• Got involved in multiple DR (Disaster Recovery) test scenarios, by facilitating SAN SRDF functionality in Solaris 8, 10 and RHEL 5.x, 6.x environments.
• Worked with database administrator for adding on packages and patches after checking compatibility and integrity of packages for Oracle RAC.
• Performed VxVM & VCS upgrade from 4.x to 5.x.
• Solaris upgrades / updates using live upgrade technology.
• Server Consolidation and migration of application on oracle Enterprise and java Application.
• Monitored, Modified and optimized NetBackup activity, backup schedules and reporting to proactively avoid issues.
• Used Shell and Python scripting for automating jobs.

Environment: Solaris 8/9/10/11; Red Hat Enterprise Linux 5x/6x;IBM AIX 5.1/5.2;p series 550, 570, RS/, E4500;Veritas Volume Manager; Veritas Cluster Server; VMware ESX 4.x, 5.x;SUN Enterprise 420R, 450, V490, 3500, 4500, 6500, 8800; Nagios; Tomcat6; Oracle 9i;DNS; DHCP; NIS; NFS; Puppet; Apache 2.x.

Confidential, NY

Unix/Linux Administrator

Responsibilities:

• Installed, configured and administered RHEL 4/5/6 and SUN Solaris 8/9/10.
• Worked on PXE servers, and Kickstart configurations for automatic Linux Installation.
• Worked with Redhat Satellite Server for upgrading and installing Packages and patches in Redhat; and managing channels.
• Build high availability servers using Redhat Cluster involving 2-5 nodes.
• Configured NIC Bonding on Linux and IPMP on Solaris.
• Managed various servers using VMware vSphere ESXi 4.1 /5.0/5.1.
• Performed VxVM & VCS upgrade from 4.x to 5.x.
• Worked with VXVM configuration and add space as needed.
• Installed and implemented VMware ESXi 4.0 host servers with vSphere client.
• Managed virtual machines clones and templates, plan and implement VMware Fault Tolerance.
• Configured and maintained volume groups, logical volumes and extended logical volumes using Logical Volume Manager.
• Worked with storage teams to configure EMC SAN, NAS and iSCSI configuration.
• Coordinated with vendor to determine RCA on few occasions; by facilitating veritas and solaris explorers, core dumps, RHEL sosreports.
• Monitored, modified, and optimized NetBackup activity, backup schedules and reported to proactively avoid issues.
• Hands on experience with troubleshooting problems with bootloaders like GRUB .
• Configured and deployed Nagios Monitoring system for managing all the Linux warehouse systems.
• Installed BIND package, updated the BIND database and troubleshoot the problems in Red Hat Linux DNS servers.
• Worked on the configuration of mail server using SendMail.
• Participated in migration planning, developing, testing and moving the migration process onto full-fledged production network.
• Performed User Account management, data backups, and user’s logon support.
• Implemented Network File System (NFS) for file sharing and network installation.

Environment: Solaris 8/9/10; Red Hat Enterprise Linux 4/5/6;SuSe Linux Enterprise Server (SLES) 9/10; VMWARE; DELL PowerEdge 1650,2850,2950,6400; Sun SPARC workstations (A21, A22, A70, A89) and Servers E450, E3000, E3500; HP-Proliant DL 360G5; NFS; NIS; DNS; Shell/PERL scripts; SAN; Tivoli; Puppet; Nagios; SVM; LVM; ZFS; zones; VxVM; Apache 2.x; WebLogic; Oracle 9i.

Confidential, Minneapolis (MN)

Unix/Linux Administrator

Responsibilities:

• Installed, maintained and administered Red Hat Enterprise 5.x, 6.x, Solaris 8/9/10 servers.
• Configured Jumpstart and Kickstart Servers for Solaris 9/10 and RHEL 4.x/5.x respectively.
• Added patch and package on Red-hat Linux servers using RPM’s &YUM.
• Installed and configured VERITAS volume manager, VERITAS file system and VERITAS cluster server; Maintaining and troubleshooting VCS for failover and redundancy.
• Added and managed disk along with file system through VERITAS volume manager, Solaris Volume manager and Logical volume manager.
• Configured and maintained VERITAS volume manager, VERITAS file system and VERITAS cluster server.
• Maintained and troubleshoot VCS failover and redundancy.
• Installed and configured VERITAS Cluster server, Sun Cluster, and Red-hat Cluster server.
• Created and Configured GFS (Linux) and ZFS (Solaris) file systems.
• Worked on Oracle/UDB users and assigned appropriate permission.
• Created local and global zones using Solaris container technology.
• Installed and configured Websphere and Apache servers.
• Involved in disaster recovery testing every quarter; Implemented Disaster Recovery sites from the scratch.
• Deployed NIS and NFS for administrative and project requirements.
• Worked on Nagios and VERITAS Netbackup for monitoring system resources, logs, disk usage, scheduling backups.
• Used VMware virtual infrastructure, VMware ESX, VMware VCenter for server consolidation and virtualization.
• Handled and upgraded Storage, coordinating with vendors on EMC Clarion.
• Registered the new server hardware under Red Hat network for support and downloading software.
• Configured IP Multipathing on existing servers to avoid the downtime in case of Network Migration.
• Worked closely with database administration staff to ensure optimal performance of databases, and maintained development applications and databases.
• Involved in teams handling system performance, capacity planning and SLA compliance

Environment: Solaris 10/9/8, Red Hat Enterprise Linux 3/4/5, HP-UX 11.0/11i, AIX 5.1/5.3L, Sun Fire 4800/3800/V880/ Sun Enterprise 6500/500/4500/450/420 R/250 servers, VERITAS Clusters, HP 9000 K, L, N class server, IBM RS/6000, VERITAS volume manager 4.5, 5, VERITAS cluster server 5, VERITAS Netbackup, Nagios, EMC Clariion/Symmetric.

Confidential, Hanover (MD)

Unix/Linux Administrator

Responsibilities:

• Maintained and Administered SunSolaris 8/9/10, Red-Hat Enterprise Linux 4.x/5.x/6.x, CentOS 5,6 server & troubleshooting hardware, operating system, applications & network problems and performance issues.
• Carried out Jumpstart and Post Jumpstart Installation with Solaris 10, and kickstart installation on RHEL environment.
• Configured Virtual Machines under VMware ESXi servers to install Red Hat Linux guests.
• Migrated Solaris8/9 to Solaris 10 or RHEL environment; also p2v migration projects.
• Tested Solaris 11 in test/lab environment.
• Created and executed Shell and Perl Scripts for automation of administration tasks and used Crontab for scheduling repetitive tasks.
• Created new Volumes, Disk Groups along with addition and removal of disks and resizing of existing volumes by implementing Volume Management with VxVM.
• Upgraded VCS from version 4.x to 5.1 MP3.
• Created ZFS file system hierarchy in Solaris implementing ZPOOL.
• Organized storage in Solaris with Solaris Volume Manager (SVM) and Red Hat with Logical Volume Manager (LVM) in SAN environment and performed File system tuning and resizing.
• Configured RAID mirroring of Root Disk using Solaris Manager (SVM) on Solaris.
• Configured Bonding in Linux, IPMP in Solaris and Ether-channel in AIX to provide network interface redundancy.
• Configured and administered virtual machines using vSphere 4.0, VMware Converter and vCenter Server 4.0.
• Created virtualized environment using zones in Solaris for efficient management of system resources.
• Installed and implemented Mail Server using postfix and dovecot.
• Implemented, configured, and monitored Veritas Cluster Server4.1 for high availability for agents like DNS, NFS and other database applications along with troubleshooting for Cluster Cable Heartbeat and Network Cables.
• Used Puppet for centralized management of Linux servers/boxes.
• Implemented Nagios to monitor and set up thresholds on the various system parameters (CPU, Memory, Disk, and Network) and took corrective measures as the usage approaches the thresholds.
• Configured and managed DNS, DHCP and NIS, NFS, and LDAP, ftp, sshd Servers.
• Engaged in SAN migration efforts.
• Installed and configured Apache2.x webserver in RHEL.
• Co-ordinated with vendors in handling hardware problems and failures.
• Tuned the kernel parameters based on system requirements.
• Carried out data backup and disaster recovery operations.
• Performed documentation processes and troubleshooting steps.

Environment: Solaris 8, 9, 10, Red Hat EL 3, 4.x, VERITAS Volume Manager 5, VERITAS Cluster Server 5.0, VERITAS Netbackup 6.5, VM Ware ESX 3.5, Virtual Center 2.5, BMC Patrol for Unix, Apache 2.2.x, Sun Java System Web Server 7, 7, WebLogic 10, KSH, bash, Oracle 10g, Sun SPARC Enterprise T2000, T5120, Sun Fire v890, 6800, x4100, x4150, E6900, M5000, M 8000, 3510, 3511, Hitachi Lightening 9970v

Confidential, Fremont (CA)

UNIX/ Linux Administrator

Responsibilities:

• Configured and administered RHEL 4/5, Solaris 9 operating systems environment.
• Used Jumpstart for Solaris and Kickstart for RedHat for automatic provision of OS.
• Worked on Disk Partition, mirroring root disk drive, configuring device groups in UNIX and LINUX environment.
• Added and managed patch using tools like Yum, Repository and RHEL satellite server and Sun Update manager for Solaris server.
• Configured Multipathing on RedHat and Solaris using EMC power path and native Multipathing softwares.
• Managed patching worked on Firmware updates for blade enclosures.
• 10.1.10.94 Managed SAN storage and created different RAID level configuration for application and database server.
• Installed and configured JBOSS, Apache, Tomcat, and WebSphere.
• Worked on LDOMs server virtualization with Solaris zones and ZFS file system.
• Worked on tuning, backup and recovery system.
• Maintained and configured DHCP, DNS, NFS and automounter.
• Managed volume and file system using Veritas Volume management, Solaris Volume Management on Solaris and Linux Volume Management in Linux.
• Worked on Sun Update Manager tools for patching.
• Established remote and secured connection through SSH gate.
• Created and implemented clustering topology in WebSphere application server ND V 5.x, 6.x, 7.x, 8.x to achieve Work Load Management, High availability, Load balancing and hardware failover.
• Worked on Nagios 3.0 to monitor services like CPU, Hard Drive, Memory, Users, http, ssh etc.
• Experienced on file system management, User account management, data backups and user’s login support.
• Monitored and debugged day to day issues and problem relating to systems, software and servers.
• Provided 24x7 on-call /Remote Support to resolve the issues regarding server performance.

Environment: Redhat 4/5, Solaris 9, Apache 2.2, JBOSS 4.2, Jumpstart, KickStart, LDOMS 1.2, VMware, Veritas Cluster Servers, Solaris Volume Management.

Confidential

Unix/Solaris Administrator

Responsibilities:

• Analyzed, maintained, deployed, and modified networks, servers, and other IT resources in a mixed Unix/Windows environment.
• Administered and configured Red Hat 4, Solaris 8 performing periodic updates.
• Implemented RAID configuration for redundancy members of a team.
• Configured Telnet, FTP, sFTP, SSH, iptables, Samba for the servers.
• Deployed, configured and maintained Open Fiber based SAN/NAS units.
• Designed, built and maintained disaster recovery data center for company.
• Provided networking support like routing, WAN/LAN, switching and VPN support.
• Installed and Configured RHEL 5.x on Dell servers using Kickstart and Solaris 8 on sun servers using Jumpstart.
• Performed volume management using LVM on Linux.
• Created Users, Group and file system as per the database requirements.
• Managed packages, and did necessary patches in the system.
• Monitored system capacity and performance using tools like Vmstat, iostat.
• Implemented direct and indirect maps for auto mounts in NIS environment.
• Configured and administered MySQL database.
• Tuned Kernel parameters based on application and database requirements.
• Created zones and added storage to an existing storage pool.
• Installed and configured Sendmail Utility on Sun UNIX servers.
• Created, troubleshoot and mounted NFS file systems on different OS platforms.

Environment: Sun Solaris 8, Redhat 4/5, Veritas Volume Manager, Veritas foundation suite 5.0, Puppet, Apache 2.2.x, Web Server 6.x, 7.