SUMMARY

• Over 7 years of experience in Unix System Administration and Support of various applications on Sun Solaris 8, 9,10, RHEL 4.x, 5.x, 6.x, Red Hat Linux 4, 5, 6, SuSE EL 9, 10, vSphere 4.0, 5.0, Cent OS and Windows 2000/2003/2008.
• Experienced in installing, upgrading, patching, configuring and administrating Solaris OS (SPARC/x86) wif proper release management.
• Experienced in Performance Monitoring, Security, Trouble shooting, Backup, Disaster recovery, Maintenance and Support of UNIX systems.
• Created and maintained user accounts, profiles, security, rights, disk space and process monitoring.
• Worked on shell scripts for CPU usage, Memory consumption and number of me/O to collect performance stats and troubleshoot issues if needed on Sun Solaris, Red Hat Linux.
• Installed and configured VMware ESX server 3.5, 4.0 and vSphere 4.0 on Dell power edge servers.
• Deployed and configured Veritas Volume manager (VxVM) and SVM for creating mirroring, striping, parity, New File Systems, mounting and un - mounting and data replication of File Systems on Sun Solaris, Red Hat Linux.
• Managed teh user accounts, partitioning, making zones, mounting and maintaining file systems, system security, change management, documents, Performance tuning of Sun Solaris Red Hat Linux servers using tools like vmstat, iostat, sar, top, pmstat, free, prtconf, syststat, iostat, netstat etc.
• Performed Remote system administration using Network protocol tools like ssh, http, rsh, telnet, scp, ftp, sftp, ssl, RSA secure connection and Rlogins.
• Experienced in planning, documenting and supporting high availability, business persistence, fail-over, fail-back using Veritas Cluster Server 4.0, 5.x, Veritas cluster file systems in SAN environment.
• Configured Networks using DNS, NIS, NFS, FTP and DHCP, troubleshooting network problems such as Sub netting, Routing, Firewall related on TCP/IP providing support for users in solving their problems.
• Installed, upgraded and configured SUN Solaris 9, 10 on sun servers using Jumpstart installation (also manually).
• Experience in installing and configuring Kick start in Linux.
• Created and maintained large file systems wif EMC SAN devices using VxVM on Sun Solaris.
• Resolving system errors and crashes, huge file sizes, file system full errors.
• Troubleshooting of NFS servers and NFS clients in auto mount Environment.
• Deploy and configuration of Data Protection tools such as VERITAS Net Backup, Legato and other backup agents and Anti-virus agents (ESM).
• Install and configure wif recommended kernel setting for various applications such as Oracle (10i, 11g), MySQL.
• Experience wif Java Enterprise application servers such as Web Server and Apache.
• Implementation of RAID levels using VERITAS Volume Manager.
• Problem determination and troubleshooting, Security using SSH and Shell Scripting.
• Exposure to couple of ticketing systems like Remedy, Clarify.
• Performed server remediation in a critical 24/7 production environments, handling hardware and OS centric issues.
• Working closely wif other business units like deployment, DBA, SAN Admin and Backup Admin etc and other product vendors like EMC, SUN, Oracle.
• Performed all configuration changes to software and Patching, firmware upgrades to hardware wif in teh maintenance window wif proper change management approvals.
• Excellent written and verbal communication skills, inter-personal skills and self learning attitude.

TECHNICAL SKILLS

Operating Systems: Red hat Linux EL 4.x, 5.x, 6.x, Solaris 7/8/9/10, SuSE Linux 9, 10, vSphere 4.0,5.0, CentOS 5, 6, Fedora, VMware ESX 3.x,4.x,5.x, Windows NT/ 2000 /2003/2008.

Hardware: Sun Ultra Enterprise Servers E3500, E4500, E450, E420R, E250) SunFire (6800 / 4800 / 3800 / v880 / v480 / v240 / v210 / v440 / 280R / 12K / 15K), M8000, M5000, M4000, M3000, T5220, T5240, Sun Workstations (Ultra 5, 10, 20, Blade 100,150, 2000), Sun Storage Array (D1000, A5000, ST 6540), Sun X3-2, X2-4.

Volume Management Tools: Solaris Volume Manager, Veritas Volume Manager 4.0,5.0, Logical Volume Manager, RAID, Veritas Cluster.

Server Management: Sun management console, Confidential open View, Network node manager, Compaq insight server manager.

Database Servers: Oracle 9i, 10g, 11g on Solaris and Red Hat Linux and SQL 2000, 2005.

Network Services: SMTP, SNMP, DHCP, POP, SMB, NIS, NIS+, NFS, DNS, FTP/TFTP, ARP/RARP, SSH, TCP/IP, NTP, TELNET.

Web Technologies: Apache 2.0, WebLogic 8.1, Websphere, Jboss 4.x, IIS, VMware ESXi, ESX 2.5.1, 2.5.2.

Storage: EMC PowerPath, Symmetric/Clariion & Celerra, Hitachi, IBM Arrays, Storage-TEK L700, Dell Power Vault, Netapp V6000, FAS6000, Netapp (Snap Vault and Snap Mirror), VERITAS NetBackup 4.5, Hitachi, Netapp V6000, IBM Tivoli (TSM).

PROFESSIONAL EXPERIENCE

Confidential, Richmond, VA

Unix/Linux Administrator

Responsibilities:

• Monitored teh systems and administered Servers for day-to-day problems, patches, user administration, hardware failure, monitoring log files, backup, software upgradation, configuration changes and documentation.
• Installed, upgraded and configured SUN Solaris 9/10 on Sun Servers using Jumpstart and Red hat Enterprise Linux 5/6 using Kickstart.
• Installed & configured Guest operating system like windows, Redhat 5.x and SuSE 9, 10 on VMware ESX 4.0.
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Red hat Cluster Server.
• Fine tuning of Operating System and performance analysis,uptime and response time and SLA.
• Managed users and groups on a large scale in NIS and LDAP environments.
• Installed multiple instances of Oracle WebLogic 10, 11g and halped wif teh deployment of JARs and WARs on development environments.
• Installed and configured LAMP on RHEL 5.x. and also configured and setup SSL and Virtual machines.
• Performed UNIX System Administration. Fine tuning, Kernel debugging, process scheduling, disk and file system me/O, kernel internals, TCP/IP communications.
• Installing, Configuring and deploying applications on WebLogic Application Server 8.x, 9.x.
• Performed installation, configuration and maintenance of Solaris 10 wif Veritas Volume Manager 5.0 and Veritas Cluster Server 5.1.
• Configured teh LUNs assigned by teh storage administrators, and managed Volumes using Logical Volume Manager (LVM) on Linux. Created ZFS file system in Solaris 10 using Zpool and ZFS and created Veritas file systems 5.0, RAID 0, 1, 5 volumes
• Implementated RAID techniques and teh creation of Disk groups and volumes, plexes using Veritas Volume Manager 5.0.
• Installed and configured LDOMs on Solaris 10 on T series Servers.
• Setup and configured KVM on Red hat and Xen on SuSE and installed guest OS on KVM and Xen.
• Gave sudo access to users on Linux boxes and RBAC on Solaris 10 boxes.
• Configured Nagios to monitor teh resources on teh server farm and support them on a 24x7 basis.
• VxVM & VCS upgrade from 4.x to 5.x.
• Configured multi-pathing using multipathd.conf, EMC Powerpath and native Leadville drivers.
• Creating backup account for new users and deleting account for teh retired or deleted users
• Troubleshooting and analysis of hardware and software failures for various Solaris servers (core dump and log file analysis).
• Assembled, replaced and handled Sun and Linux Hardware problems in Data Center.
• Involved wif teh deployment teams in trouble shooting and fixing day-to-day problems of teh applications in production on 24/7 schedule.

Environment: SUN Solaris 9/10, RHEL 4.x/5.x/6.x, VMware ESX4.0, Apache 2.2.x, SuSE EL 9/10, WebLogic 10/11g, WebLogic 8.x/9.x, SunFire T1000, T2000, Sun M9000, M5000, M3000, Sun X3-2, X3-4, Confidential C Blade System,BL460c, BL420c EMC, Veritas Storage Foundation 5, Veritas Cluster Server 5.1, VMware, Symmetrix.

Confidential, Houston, TX

Unix/Linux Administrator

Responsibilities

• Installed, maintained and upgraded Redhat Linux and Solaris Servers using kickstart based network installation.
• Configured and administered multiple production Redhat 4.0, 5.0 servers across multiple platforms.
• Configured and maintained teh volume groups, logical volumes using LVM, VERITAS Volume Manager and Solaris Volume Manager.
• Performed High availability designing using VERITAS Cluster Server 5.0 on Redhat Linux and Solaris Servers.
• Supported Oracle 9i, 10g database server applications and processes on Redhat 4.x, 5.x servers.
• Installed teh Redhat 4.0/5.0 operating system and set up teh Oracle environment.
• Installed, configured and administered Solaris 9/10 using Jumpstart.
• Managed File system using VERITAS volume manager 5.0.
• Added virtual hard drives, NIC cards and memory on Guest OS on Ldoms.
• Performed centralized management of Linux boxes using Puppet.
• Migration involved backup & restore and EMC’s Open Migrator, cpio, rsync and cp.
• Architecture, Design and core configuration of teh production server systems, which involved sizing file systems and hardware implementation after evaluating support matrices for storage. .
• Implemented Oracle RAC high availability application cluster on RHEL 4.5.
• Performed Troubleshooting NFS, NIS, Samba, DNS, DHCP, LDAP, Mysql and network problems.
• Maintained teh user’s accounts in NIS environment.
• Setup and configured KVM on Red hat and Xen on Suse.
• Resolved system errors and crashes, disk space problems, huge file sizes, file system full errors.
• Created pool and file system using Zpool on Solaris 10.
• Installed and configured VMware ESX server 3.5, 4.0 and Vsphere 4.0 on Dell power edge servers.
• Experience in Kernel fine tuning for maximum files, oracle database installation, ip forwarding, and network issues.
• Performed RAID mirroring of Root disk on Solaris boxes.
• Configured PXE environment for Kick Start installation for Red Hat Linux. Writing shell scripts for teh routine tasks.
• Configured password less login between system using SSH protocol on Solaris and Linux boxes.
• Designed and implemented security of teh production servers using IP chains, Security monitoring, developing scripts, processing teh job automation. Scheduling upgrades.
• Involvement wif teh Deployment teams in trouble shooting and fixing day-to-day problems of teh applications in production on 24/7 schedule.

Environment: RHEL 4.x/5.x, Solaris 9/10, VERITAS cluster server 5.0, VERITAS foundation suite 5.0, Apache 2.2.x, Oracle 9i,10g, JBoss 4.2, VMware, Sun Fire x4100, x4200, x4250, T2000, T5440, M3000, Dell R805, EMC Symmetric 8830, 8840,DMX -3 NFS, and DNS, EMC, Shell, bash and Perl scripting.

Confidential, Fort worth,TX

Unix/Linux Administrator

Responsibilities

• Build and support cluster infrastructure (Sun Cluster 3.x, Veritas cluster, Linux RAC cluster).
• Configured Jumpstart server for Solaris 9/10 and Kickstart Server for Redhat Linux 4.0,5.0.
• Provided Administrative support for about 225 Solaris/Linux servers running Web logic, Web sphere Suites, Apache Web Server and Multimedia Messaging applications.
• Installation, Configuration and Maintenance of Solaris Operating System wif Veritas Volume Manager and Veritas Cluster Server.
• Created new file systems whenever required.
• Knowledge on Packages and patches in Solaris and Redhat.
• Performed tasks such as User, group management, adding, removing disks and creating file systems as requested on UNIX/WINDOWS Servers.
• Installing Veritas Volume Manager and configuring Disk Groups, Volume Groups and Logical volumes to manage teh storage resources.
• Day to Day activities included handling security issues like stale UNIX account cleanups, 90 day password changes, setting max age and min age, creating a list of umask permission for various users.
• Involvement wif teh Deployment teams in trouble shooting and fixing day-to-day problems of teh applications in production on 24/7 schedule.
• Configure Web Logic and Apache and Tom cast Server wif JAVA Application tools on Red hat servers environment.
• Monitored System and Network Security by using various Security tools.
• Ensured teh data redundancy wif RAID implementation.
• Configured different Network related services such as NFS and NIS.
• Configured send mail server in teh local mail server.
• Responsible for teh configuration of DHCP server and Samba server.
• Responsible for DNS server management, User disk quota management, Projects, Quotas management. Troubleshooted teh problems regarding NIS and DNS.
• Activate/De-activate network ports on access-layer switches assign IP addres0sing using teh company policy and addressing scheme, VLAN assignment and configure coreNetwork switches.
• Ensuring data downloading & uploading via FTP at remote location. Tuning networks, Maintaining backups & ensuring minimum downtime. Installed & maintained Corporate/Desktop Antivirus Program.

Environment: - Sun Solaris 9/10, RHEL 4.x/5.x, SuSe Linux 9,10, Apache, Tomcat, Samba, NFS, SSH, Perl, Production hosting and software development support, Secure FTP Server, Veritas Volume Manager 4.0 MySQL database administration & replication, Oracle 10g, Sun Fire X4100, X4200, X4250, Security tools.

Confidential, Atlanta, GA

Unix/Linux Administrator

Responsibilities:

• Performed Systems monitoring and administration of Servers for day-to-day problems, patches, user administration, hardware failure, monitoring log files, backup, software up gradation, configuration changes and documentation.
• Installed & configured Solaris Jumpstart server and Linux Kick Start Server.
• Installed, Configured and Administered Web logic, Web sphere and Apache Servers in Linux and Solaris Servers.
• Performed troubleshooting for various problems, logging call wif vendors.
• Knowledge on Packages and Patches on Solaris and Red hat 4.0.
• Performed installation and configuration of Veritas Volume Manager, LVM, VERITAS File System and Veritas Cluster Server.
• UNIX Shell/Perl scripting for job automation. Creating zones for application.
• Installed, Configured and Administered teh High Availability Veritas Cluster Servers for failover and redundancy purpose.
• Created User, Groups. File Systems per database requirement.
• Documented teh in change design/Architecture diagram of Veritas Cluster Servers.
• Performed installation, Configuration and Maintenance of Web Servers, Application Servers and Database Servers on Sun Solaris 8/9.
• Setup and configure NIS environment and troubleshoot NIS when needed.
• Provided sudo access to users when needed .
• Disk and File system management through Veritas Volume Manager.
• Involved in troubleshooting day to day system and user problems.
• Interacting wif various teams such Oracle database team, and Net Backup team.
• Maintenance of Source code, Direct interacts wif development, migration, testing & Database- Oracle9i.
• Develop, Maintain, update various scripts for services (start, stop, restart, recycle, cron jobs) Unix based Korn shell, Bash.
• Performance management & Capacity planning.

Environment: Apache, Solaris 8/9, Oracle 9i, Veritas Cluster Server, Veritas File System, Veritas Volume Manager, Sun Fire 4500,V880,V480 E420R,E450,E250, Web sphere, Web logic, LVM.

Confidential

Unix/Linux Administrator

Responsibilities:

• Monitored teh usage of CPU, load on CPU, checking teh load on memory and various security aspects of teh systems configuring teh network printers.
• Installed, configured and maintained Oracle 8i on Sun Solaris.
• Involved in implementation, configuration, administration of LAN, WAN, CISCO VPN, Pix Firewall and VOIP Systems.
• Installation, Configuration and Administration of High Availability VERITAS Cluster Servers for failover and redundancy purpose.
• Performed problem determination and restored service using standard procedures.
• Maintained a secure Samba file server on a 3 Red Hat Enterprise Linux systems for integrated data communication between Windows and Linux Operating Systems.
• Used utilities like VNC, Nessus and Port Monitors.
• Security measures blocking unnecessary ports and restricting user’s remote logins.
• Managed data and disk drives, disk mirroring and RAID implementation using Solaris Disk Suite.
• Joined multiple disks to overcome disk size limitations, mirrored data for fault tolerance. Spread data over multiple disks for performance enhancement.
• Configured Jumpstart server for Solaris 8/9 and kickstart server for Red hat 4.0.
• Responsible for Day to Day Backup and Recovery using tar.
• Used commands for creating new users, groups, user passwords, changing passwords, managing user accounts and locking users.
• Monitored bad user logins and unauthorized users.
• Performed Recovery Management on tapes using Ignite-U.

Environment: Linux, Sun Solaris 8/9, Oracle 8g, NIS, DNS.