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Linux/unix Administrator Resume

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Houston, TX


  • Intend to build a career with leading corporate of hi - tech environment with committed and dedication, which will help me to explore myself fully and realize my potential to work as key player in challenging and creative environment


  • Over 7+ years of experience specialized in System Administration working on Redhat Linux, Solaris, Suse Linux, AIX, Cent OS, Fedora, 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 5.x, 6.x, 7.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.
  • 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 Red hat Linux.
  • Installation and upgradation of Packages and Patches configuration mgmt, version control, service pack. & reviewing connectivity issue regarding security problem.
  • 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, Xen, KVM.
  • Experience in Installation of Oracle and MYSQL.
  • Experience in creating and managing FACLs
  • Experience in writing shell scripts to automate the administrative tasks and management using crontab.
  • Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
  • Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
  • Experience in Sun Solaris 10(Ldoms, Creation of Zones, Service Management Facilities, Virtualization, Container based).
  • Experience working in SAN environment like EMC Symmetrix DMX3, DMX4 and Clariion CX3 series arrays.
  • Creating Linux Virtual Machines using VMware Virtual Center and AIX LPARs on P550 and P570.
  • Installation and configuration of Jboss, Web Sphere 5.1/6.0, MQs Application Server on Solaris and Linux boxes.
  • Independent problem solving and a good team player with strong interpersonal and communication skills.
  • Experience supporting 24x7 production computing environments. Experience providing on-call and weekend support.
  • Ability to work independently as well as a team member


Operating Systems: RHEL 5/6/7, Solaris Release 2.10/2.9/2.8/2.7 , IBM-AIX 5.X, Windows 98, Windows 2000,Windows 2008 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


Confidential, Houston, TX

Linux/Unix Administrator


  • Administration of RHEL 6.x, 7.x which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
  • Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts, Xen servers.
  • Installing RedHat Linux using cobbler and applying security polices for hardening the server based on the company policies.
  • Installed and configured Puppet Master / Agent configurations and Master-less Puppet configuration for high scalability
  • Sharing the source file from puppet master to all puppet nodes through puppet fileserver
  • Deploy and monitor scalable infrastructure on Amazon web service (AWS) & configuration management using Puppet.
  • Installed, manually configured Sun machines through jumpstart installation on Sun Fire and Enterprise servers. Installed, configured Zones, LDOMs in Sun Solaris 10.
  • Build LPAR system and Installed AIX 5.3 and 6.1 on LPAR using NIM Power 4, Power 5 systems and Upgraded Maintenance level as well.
  • Installed and verified that all AIX/Linux patches or updates are applied to the servers.
  • Installing, administering Redhat using Xen, KVM based hypervisors.
  • RPM and YUM package installations, patch and other server management.
  • 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 and performed data-center operations including rack mounting, cabling.
  • Tech and non-tech refresh of Linux servers which includes new hardware, OS upgrade, application installation, testing.
  • Installed, configured, and maintained WebLogic 10.x and Oracle 11g on Solaris & Redhat Linux.
  • Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
  • 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.
  • 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.
  • Designing Firewall rules for new servers to enable communication with application, Oracle 11g servers.
  • Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
  • 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).
  • Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
  • Adding servers to the domain and monitoring them using spectrum, sitescope, cacti.
  • Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.
  • Supporting 24x7 production computing environments and providing on-call and weekend support.

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series), Solaris 8,9,10, AIX 5.3, 6.1, 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 Infrastructure 3.5.

Confidential, Seattle, WA

Linux/Unix Administrator


  • Installation and administration of RHEL 4.0/5.0 and SUSE 10.x.
  • 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 patch upgrades.
  • Installation, configuration and administration of VMware, Solaris Zones, Containers and Ldoms.
  • Automation of jobs through crontab and autosys.
  • Installation of packages, patch management, volume managment on Suse servers using YaST.
  • Applied appropriate support packages/patches to maintain system integrity.
  • Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and Weblogic application server.
  • 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.
  • Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
  • Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
  • Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.Build LPAR and DLPAR system and Installed AIX 5.2, 5.3 on LPAR using NIM.
  • Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
  • Configured/Maintained Zones, LDOM, ZFS filesystem Sun Solaris 10 Servers.
  • Integrating Weblogic 10.x and Apache 2.x and deploying EAR, WAR files in Weblogic Application servers.
  • Management and monitoring of various services using Service Management Facility and Service Administration.
  • Worked on active directory on the windows side.
  • 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 & 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.
  • 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.
  • As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN Environment.
  • Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
  • Created new groups and tested first in development, QA Boxes and then implemented the same in production Boxes.

Environment: Solaris 8,9,10, 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, Framingham, MA

Systems Administrator


  • 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 and other 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.
  • Created Zetabyte file system (ZFS) in Solaris 10. Created zpools. Exported ZFS from local zones to local zones.
  • Installation and configuration Veritas NetBackup on Sun Severs and performing 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 a part of proactive maintenance.
  • Worked with other IT teams, customers (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.


UNIX Administrator


  • Installed RHEL 3.0/4.0 using kickstart and custom building the servers per SOW.
  • Installed/configured EMC Storagewith 0, 1& 5 RAID configurations.
  • Installed and maintained Security issues.
  • Installed Veritas Volume Manager, VCS Cluster Server for failover and for mirroring and raid level configurations on EMC storage frames.
  • Performed all System Administration tasks like cron jobs, installing packages, and patches.
  • Configured Mail relaying, virtual host, POP3 and IMAP4 services and enforced security policies.
  • Configured and installed Automount and Jumpstart.
  • Oracle Installation 8.1.5 on Solaris 2.6 & Red Hat Linux Enterprise 3.
  • Diagnosing hardware/software problems and provide solutions.
  • Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clients and AutoFs File systems.
  • Troubleshooting system, network and user issues.
  • Performing tape backups, archiving and checking data integrity through Shell Scripts and job automation.
  • Supported back office systems environments.
  • Testing and upgrading production, development and test Linux and Solaris servers.
  • Creation & Maintenance of user accounts & passwords & profiles, home directories, initialization of files, groups’ creation and management, setting file permissions, customizing shell environment setup for users.
  • Additional responsibilities include schedule and administration of server backups, setup and administration of network and msmail accounts.
  • Troubleshooting various problems related to VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices on various Production Boxes.
  • Maintaining production critical servers running Solaris UNIX, Linux supporting Oracle database and Web services. Providing 24x7 supports.
  • Worked efficiently using Veritas NetBackup on development and production servers for backups and restores.
  • Created LVMs on Linux servers.
  • Writing Shell Scripts for managing day-to-day transactions & for automation of routine tasks.

Environment: SUN Servers (6500, 4500, 420, Ultra 2 Servers), Solaris 2.6/2.7/8, Veritas NetBackup, Veritas Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming.


Systems Administrator


  • Installation, Configuration, Up gradation and administration of Sun Solaris, RedHat Linux.
  • User account management and support.
  • Jumpstart &Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
  • Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
  • Responsible for configuring and managing Squid server in Linux.
  • Configuration and Administration of NIS environment.
  • Managing file systems and disk management using Solstice Disksuite.
  • Involved in Installing and configuring of NFS.
  • Worked on Solaris volume manager to create file systems as per user and database requirements.
  • Trouble shooting the system and end user issues.
  • 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.

Environment: Sun Solaris 2.6/7, SUN Ultra Enterprise 6000/450, SUN Ultra 10/5/2/1, Windows NT 4.0, RHEL 3.x.

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