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Sr. Linux/unix Engineer Resume

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Raritan, NJ

SUMMARY

  • 8+ years of total IT experience.
  • 8+ years of experience in RedHat Linux.
  • 8+ years of experience in Linux engineering.
  • 8+ years of experience in migrating RHEL 4,5 and 6.
  • Recent experience in RHEL 7 and 7.2
  • 4+ years of experience in cloud OpenStack.
  • 3+ years of experience in VMWare.
  • Experience in LINUX/UNIX Administration, Shell Scripting with expertise in Red Hat Enterprise Linux 4, 5,6,7 and 7.2, Solaris 9 and 10 and Windows 2003 and familiar with IBM AIX 6.
  • Expertise in Installation, Configuration, Integration, Tuning, Backup, Crash recovery, Upgrades, Patching, Monitoring System Performance, System and Network Security and Troubleshooting of Linux/Unix Servers.
  • Experienced with the installation, configuration and volume/File system management using Veritas Volume Manager (VxVM), Logical Volume Manager (LVM) and Solstice Disk Suite (Solaris Volume Manager).
  • Experience in VMware. Installed and monitored Virtual environments with ESX 4.x servers and Vsphere.
  • Good knowledge on various cloud computing products such as Amazon (EC2), OpenStack.
  • Extensive Knowledge on Solaris OS installation, configuration and troubleshooting in Solaris 9,10.
  • Creating Virtual switch and assigning to Virtual servers(LDOMS)
  • Creation and configuration of New LDOMS and resource allocation to virtual servers.
  • Extensive knowledge on Performance monitoring and Turning Troubleshooting.
  • Extensive knowledge on T5 - X and T4-X hardware Design and planning.

TECHNICAL SKILLS

Hardware: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series), Solaris 9,10, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Dell Power edge 1300/1500 server, IBM Xseries,Blade server, Oracle RAC, Oracle T5-X and T4-X.

O / S: Red Hat Linux (RHEL) 4/5/6,7 and 7.2,Solaris 9/10, IBM AIX 5.3, Windows NT /2003/vista Fedora 16/17/18, SUSE 10.x

Naming Services: DNS, NIS, and NIS+

Backup Management: VeritasNetbackup 4.x/5.x/6.x, ufsdump, ufsrestore, tar, dd, cpio

Script Languages: Shell scripts, PERL

Web Technologies: Apache 2.x/3.x, IPLANET 4.x/5.x, WEBLOGIC 8, Websphere 4.0/5.0

Storage: SAN, EMC Symmetrix / Clarion, iSCSI, SNAP, NAS, DAS

Third-party Software: VERITAS Volume Manager, LVM, LDAP

Cluster: Red Hat Cluster, Veritas Cluster Server (VCS), Sun Cluster, AIX HACMP

RDBMS: Oracle, MS SQL Server

Protocols: NetBIOS, NetBUI, SMTP, SNMP, ICMP, TCP/IP, FTP, TELNET,SSH, UDP & RIP, DNS, WINS, DHCP.

Antivirus: Symantec Antivirus Corporate Edition, Trend Micro Messaging Suite for Exchange, MacAfee Virus Scan Engine 7.1 / 8i, AVG (Grisoft)

Remote Access Tools: Terminal Services, Net Meeting, Web - Ex, PC Anywhere and VNC for Windows Servers.

PROFESSIONAL EXPERIENCE

Confidential, Raritan, NJ

Sr. Linux/UNIX Engineer

Responsibilities:

  • Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 7/7.2 and Solaris 9/10 systems.
  • Performed automated installations of operating system using kickstart for Red Hat Enterprise Linux 7/7.2 and Jumpstart for Solaris 9/10.
  • As a Red Hat administrator primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, and securing of OS.
  • Remote monitoring and management of server hardware.
  • Configured VERITAS Volume Manager for file system management on Oracle Solaris environment.
  • Used SALT for managing system configurations.
  • Installation, configuration and administration of VMware vShpere, Solaris Zones and LDOMs.
  • Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
  • Extensive use of Bash shell for scripting.
  • Expertise in Solaris and Linux backups using VERITAS Net Backup.
  • Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VCS in heterogeneous SAN environment.
  • Involved in development, user acceptance, and performance testing, production & disaster recovery procedures.
  • Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, setting up user and group ACLs.
  • Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.

Environment: DELL PowerEdge M600/R610/R620/R710/R720/R820/R900/2950, M3000/M5000/T4-1/T5220, Red Hat Linux Enterprise servers 7/7.2, Solaris 9,10, SAN (EMC Clarion and Symmetrix), OpsCenter, Satellite, BladeLogic, Veritas Cluster Server 5.0, VMware Virtual Client 4.1, VMware Infrastructure 4.1, vSphere 5.5, WebSphere application server.

Confidential, Tampa, FL

Sr. Linux/Unix Engineer

Responsibilities:

  • Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 5/6 and Solaris 9/10 systems.
  • Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux 5/6 and Jumpstart for Solaris 9/10 Linux.
  • As a Red Hat administrator primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
  • Remote monitoring and management of server hardware.
  • Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
  • Installed Red Hat Enterprise Linux 5/6 and Solaris 10 Operating System on servers and Blades over the network.
  • Extensive use of Veritas Volume Manager for Disk management, file system management on Sun Solaris environment.
  • Used Puppet tool for managing system configurations.
  • Installation, configuration and administration of VMware, Solaris Zones, Containers and Ldoms.
  • Strong technical knowledge in Jboss Application server implementation, support, workload management and performance tuning including Web server setup configuration with Jboss App Server.
  • Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
  • Extensive use of Bash shell 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.
  • Expertise in Linux backup/restore with tar including disk partitioning and formatting.
  • Involved in development, user acceptance, and performance testing, production & disaster recovery server.
  • Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
  • Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.

Environment: cisco UCS B-series blade servers, Red Hat Linux Enterprise servers, Solaris 9,10, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, VMware Virtual Client 4.1, VMware Infrastructure 4.1, vsphere 5.5, WebSphere application server.

Confidential, Kansas City, MO

Sr. Linux/Unix Administrator

Responsibilities:

  • Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 5/6 and Solaris 9/10 systems.
  • Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux 5/6 and Jumpstart for Solaris 9/10 Linux.
  • As a Red Hat administrator primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
  • Installation, configuration of Oracle RAC for multiple computers to use single database.
  • Supported Oracle 10g RAC.
  • Remote monitoring and management of server hardware.
  • Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
  • Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
  • Installation and configuration of Veritas Storage Foundation Suite: Veritas Volume Manager, Veritas File System, Veritas Cluster Server.
  • Used Puppet tool for managing system configurations.
  • Installed and maintained OpenStack on KVM for cloud based applications.
  • Hands on experience on various cloud computing products such as Amazon Web Services EC2 and VPC.
  • Built virtualized Linux servers on ESXi,Vsphereand Blade servers to host multiple applications on same chassis across different server hosts.
  • Set up Red Hat Linux servers for iSCSI LUN boot instead of using local hard disks.
  • Set up Sun servers for SAN-through-FCP boot as against booting from internal hard disks.
  • Configured Sun servers M4000 and M5000 for operational readiness upon OS installation.
  • Set up Linux servers for LAMP implementations and readiness.
  • Created File systems from local storage as well as NFS partitions for application portability.
  • Created Ext4 file system in Red Hat Enterprise Linux and Zeta byte file system (ZFS) in Solaris 10.
  • Created zpools. Exported ZFS from local zones to local zones.
  • Installing, administering Red Hat 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.
  • Installed, configured, and maintained WebLogic 10.x and Oracle 10g on Solaris and Red Hat Linux.
  • Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
  • 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.
  • Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
  • Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
  • Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostatetc) and tuned I/O, memory, etc.
  • 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.

Environment: Red Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series), Solaris 9,10, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, VMware Virtual Client 3.5, VMware Infrastructure 3.5.

Confidential, Thousand Oaks, CA

Linux/Unix Administrator

Responsibilities:

  • Installation and administration of RHEL 4.0/5.0 and SUSE 10.x.
  • Configured kickstart server and updating/applying patches to the servers using Red Hat 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.
  • Installing, administering Red Hat using Xen, KVM based hypervisors.
  • Installation, configuration of Oracle RAC for multiple computers to use single database.
  • Supported Oracle 10g RAC.
  • Hands on experience on cloud computing product Amazon Web Services EC2.
  • Used Jenkins for continuous integration and automation.
  • Used Puppet tool for managing system configurations.
  • Built virtualized Linux servers using vCenter, vSphere suite on ESXi 4.0.
  • Automation of jobs through crontab and autosys.
  • Installation of packages, patch management, volume management on Suse servers using YaST.
  • Applied appropriate support packages/patches to maintain system integrity.
  • 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 Active Directory, 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.
  • Worked with project manager and auditing teams to implement PCI compliance.
  • Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
  • 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.
  • Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
  • Working on Volume management, Disk Management, software RAID solutions using Logical Volume Manager and VERITAS 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: Red Hat Linux Enterprise Linux 4/5 4, Solaris 9,10, Sun E10k, E25K, E4500, SunFire V440/880, DMX 3 & DMX4, Siteminder, SonicMQ 7.0, VxFS 4.1, VxVM 4.1.

Confidential, Houston, TX

Systems Administrator

Responsibilities:

  • Involved in installation and configuring Solaris 9/10 using Jump start server and Red Hat Enterprise Linux 4/5 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.
  • Installing, administering Red Hat using Xen, KVM based hypervisors.
  • Installation, configuration of Oracle RAC for multiple computers to use single database.
  • Supported Oracle 10g RAC.
  • Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
  • Primary responsibility includes building and supporting Red Hat Enterprise Linux 4,5 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 Zeta byte 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 Bash shell 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 swap able 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 9/10, Red Hat Linux 4/5, BMC Tools, NAGIOS, Veritas NetBackup, Bash Scripting, Veritas Volume Manager, web servers, LDAP directory, Active Directory, BEA Web logic servers,SAN Switches, Apache, Tomcat servers, WebSphere application server.

Confidential

Lead Systems Administrator

Responsibilities:

  • Installed RHEL 3.0/4.0 using kickstart and custom building the servers.
  • Installed/configured EMC Storage with 0, 1& 5 RAID configurations.
  • Installed and maintained Security issues.
  • Installed Veritas Volume Manager, VCS Cluster Server for fail-over 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.
  • Diagnosing hardware/software problems and provide solutions.
  • Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clients and Auto Fs 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 ms mail 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: HP Proliantservers, SUN Servers (6500, 4500, 420, Ultra 2 Servers), Solaris 7/8, Veritas NetBackup, Veritas Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming.

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