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- Over 5 years of strong experience as a LINUX/UNIX System Administrator and Production Support of various applications on SUN Solaris, Red Hat Linux and Windows environment.
- Experience on Solaris 10/9/8/7 and RHEL 4/5/6 implementation Administration, Installation & Maintenance.
- Upgrade and Maintain Firmware on IBM p5/p6 Servers, HMC, Sun Sparc Servers.
- Web Application Server Tomcat, Apache, IBM Web Sphere, Web logic 8.0, 8.1.
- Integration of various network related services like NFS, NIS, DNS, FPT and Samba Server.
- Installation and configuration of Apache/Web logic on Solaris, Linux and Windows.
- Enterprise Server administration of Sun Solaris and Linux Installations including Sun Fire series.
- Expertise in the setup and administration of VERITAS Volume Manager and Clusters.
- Configured Kickstart servers for complete hands-free installation of workstations, with custom profiles, begin/finish scripts and custom package suites/clusters.
- Troubleshooting skills with network protocols such as DNS, TCP/IP, SMTP & SNMP.
- Hands on experience with ticketing tools such as Remedy, BMC service desk express and Quick base.
- Administration of networking devices such as Routers and switches.
- Extensive implementation and troubleshooting experience under Client Server Systems.
- Experience in writing basic Shell scripts using ksh, bash, perl, for process automation of databases, applications, backup and scheduling.
- Strong technical background in Storage, Disk Management, Logical Volume Management (LVM) and logical partitioning.
- Installation, configuration and maintenance of Sun and HP servers.
- Management of User accounts, System security, change management and performance tuning.
- Installation of SSL certificates Linux servers.
- Monitoring and administering Sun-Solaris servers and Red hat Linux servers.
- Installation of Patches, Hardware, software's and Firmware upgrades.
- Ability to handle multiple tasks and work independently as well as a team member.
- Provided on-call support and worked with Vendors on system issues and bugs for its resolution.
- Proficient in System administration, System planning, co-ordination, commissioning, setting up security hierarchy and capacity planning.
- Worked on flexible hours for production, backup and on-call support for 24/7 environments.
Education:
Bachelor of Electronics and Communication engineering
Technical Skills:
Operating Systems
Linux (RedHat 5/6/7), Sun Solaris (/11/10/9/8), IBM AIX 5.x, Windows 2000/2003 Sever, VMWARE ESX/ESXi
Hardware
Dell Poweredge Series, HP DL Series servers, Sun Fire Servers - E25k, E15k, 12k, E280R, E480R, V240,420R, V440, V480, V490, V880,V890 and 4800
Data Centre Servers - E250, E450, E3000 and E3500
Tape Libraries - Sun StorEdge L20/L40/L60, L180 and Storagetek's 9840
A/B/C Fibrechannel
Arrays - Sun StorEdge 3130, A1000/D1000, EMC DMX 800 and 1000
Languages
Shell scripting, PERL, C, C++
Networking
TCP/IP, DNS, NFS, NIS, SSH, DHCP, Cisco Routers / Switches and LAN
Tools
Sun Cluster 3.2, VERITAS Netbackup 6.0, VERITAS Storage Foundation Suite, Solaris Volume Manager, sendmail
Web Technologies
Lotus Domino 5 / 6, Apache 2.0, Weblogic 8.1/10, WebSphere, JBoss, IPlanet, IIS, HIS.
Professional Experience:
CityOnlineServices,Hyderaabad Jan'12-2013 - Present
UNIX/LINUX System Administrator
Responsibilities:
- Responsible for installation, configuration, and administration of Red Hat Linux, Solaris systems.
- Designed, supported, and maintained Oracle Real Application Clusters supporting business critical applications on HP Proliant BL465/BL685 & Integrity Itanium2 platforms on RHEL 4 & 5.
- Expanded the environment from 128 to over 280 systems 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/UNIX hosts.
- Maintained network and data security, maintained security compliance policies on the OS for SOX and internal audits.
- Installed and configured VMware ESX server instances for virtual server setup and deployment. Responsible for creating VMware virtual guests running Solaris, Linux, Windows.
- Integrated the Linux environment with Active Directory providing a Single Sign On (SSO) solution.
- Using rsyslog & mysql, deployed a custom syslog reporting solution for system alerts and notifications.
- Deployed Redhat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.
- Experience with Jumpstart & Kickstart Installations on Solaris & Linux
- Installed, maintained and finetuned the Apache-Tomcat serverand Websphere Application Server in Linux Platform
- Created Bash/Korn shell scripts to monitor system resources and system maintenance.
- Wrote Perl and Python scripts to generate statistics and monitor processes.
- Deployed Active/Active MySQL clusters using Redhat Cluster Suite for supporting internal applications built on the LAMP stack.
- 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 provided extensive support in code deploy, change management and application level troubleshooting for the Dev, Test, Pre-Prod & Production environment. Deployed applications (EAR/WAR) files on multiple Servers/Clusters and maintained Load balancing.
- Worked with DBAs on installation of Oracle database, RDBMS database, restoration and log generation. Perform security patching of Linux servers
- Building Physical as well as Virtual (VMware) Servers.
- Mass Build of Linux/Solaris OS servers using kickstart /jumpstart automation application.
- Building Linux servers (web-logic application, apache, DB servers etc) in large quantity as per EDC and Non EDC production requirement as well as App/Dev requirement.
- Installation of Oracle 11g and Sybase open-client, Apache 2.x on Linux environment.
- Verification of the built servers.
- Worked extensively with Network File System (NFS) for storage.
- Patching of RHEL5.3 servers during outage for PCI compliance purpose as well as VCS patching for Solaris servers during weekend outage.
- Kernel Upgrading from EL5.3 to 5.4 during outage in production boxes.
- Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
- Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
- Software package and patch administration, involving adding and removing software packages and updating patches
- Handling problems or requirements as per the ticket (Request Tracker) created.
- Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
- Maintained proper documentation of all the activities carried out during the project.
- Perform hardware configuration, operating system loads, and assist with troubleshooting installation issues.
- Installations of all the required patches, drivers, third-party software.
- Installed and configured VERITAS Volume Manager and VERITAS File System as needed.
- Supported, Installed and Upgraded VERITAS NetBackup software on multiple Unix servers ( Solaris)
- Installalled of Sun E250, E450, Sun E3000, SunFire v440/v480/v490 with Solaris 8/9. Upgraded/Migrated Solaris 7 to Solaris 8 on Sun servers and workstations.
- Expertise in managing shared NFS files system, mounting and un-mounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
- Setup various user profiles, environment variables/security to ensure smooth operation.
- Experience in installing local and remote YUM server on Redhat.
- Co-ordinate with web administrator's team in installation of Web Sphere Application Server.
- Worked with DBAs on installation of Oracle database, EBS consisting Oracle Financials
- Implemented System policies and hardware profiles, hard disk configuration for fault tolerance, disk mirroring and back up the data using BACKUP devices.
- User accounts management, developing kornshell scripts for various system performances monitoring purposes and troubleshooting.
- Administered Linux servers for several functions including managing Apace/Tomcat server, mail server, MySQL database and firewalls in both development and production
- Monitored Sun Solaris Servers running in a 24x7data centre supporting approximately 400 servers.
- Responsible for supporting Linux servers for production, development and testing.
- Installing, Configuring and Maintaining the DHCP, DNS, NFS, NIS, send mail server.
- User Account Management, Group Account Management, configuring dumb terminals, adding modems, formatting and partitioning disks, manipulating swap, local and remote printer management, taking and restoring backup, scheduling jobs.
- Performance tuning and preventive maintenance. Performed daily backup.
- Performed addition of Swap space at run time.Performed installation and configuration of LDAP.
- Resolving TCP/IP network access problems for the clients.
- Implementing Remote System Monitoring with Sun Microsystems.
- Performed administrative tasks such as system startup/shutdown, backups, Printing, Documentation, User Management, Security, Network management, configuration of dumb terminals.
- Troubleshooting backup and restore problems and performed day-to-day trouble shooting for the end users on Solaris and Linux based servers.
- Develop, Maintain, update various scripts for services (start, stop, restart, recycle, cron jobs) UNIX based shell, Perl.
- Configured and maintained NIS, NFS servers on Linux.
- Setting up Oracle 8 server in Linux/Unix environment.
- Worked on creating and removing files and directories in Linux servers.
- Network designing, implementing & amp; managing LAN Networks and WAN Network
- Installing and Configuring, Manageable switches, Firewall.
- Active involvement in VMware Implementation project for virtualization of servers on three IBM ESX servers with DS 400 storage.
- Management of virtual servers on VMware.
- Managing disk storage with Veritas Volume Manager with Veritas File System (VxFS
- Granting root permission to users for performing certain activities.
- Worked on DNS, NFS, NIS administration.
- Cluster implementation for file server failover on two nodes with DS400 storage
References:available upon request
+1 (415) 644 5123
+44 1253 335595
+91 9875 492266
Hyderabad
,
India
