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Senior Unix Administrator Resume

Santaclara, CA

SUMMARY

  • 8 plus years of experience leading UNIX infrastructure team of System Administrators on Solaris, LINUX, and VMware.
  • Experience on RHEL 5 and 6/ Oracle Enterprise Linux 4 and 5, Sun Solaris 10 and Debian
  • Expert in Configuration via Jumpstart and Kickstart.
  • Ability to support servers in a 24X7 large scale data center environment. Excellent understanding of issues related to the hardware and software with the ability to resolve problems and tasks in a timely manner.
  • Proficient with configuring and maintaining NFS, DNS, NIS/NIS+, DHCP, SMTP, and Networking with TCP/IP.
  • Well Versed in different distributions and version of Linux flavours such as RHEL, SELS,Fedora,CentOS, Ubuntu, Debian etc,
  • Managing storage on EMC clarion and DMX.
  • Experienced in creating CRON jobs to automate various System Administration tasks using the crontab utility.
  • Worked as Administration, installation, configuration and tuning for Oracle SOA suite.
  • Hand - on experience on WebSphere 5.1/6.1 applications
  • Experience with SMIT, LVM (Logical Volume Manager), Mirroring, User & System Resource Management, Paging Space Management, and Job Scheduling.
  • Creating & Modifying the Store Procedures and Functions using Oracle for the monthly and weekly activities on UBS desk (Universal Banking Solution)
  • Created required environment for the deployment of the product by installing and configuring java, apache with SSI and PHP and tomcat.
  • Expert in Live Upgrade and patching, System, Network and SAN performance tuning, Kernel reconfigurations, Static and Dynamic routing

TECHNICAL SKILLS

Operating System: Solaris 10/9/8, HP-UX (10.20, 11.00, 11.11, 11.23), IBM AIX (4.3, 5.1L, 5.3L), Red Hat LINUX(AS/ES3/4/5/6/7), VMwareESX4.X.

Hardware: Sun Fire TSeries, MSeries Server, Sun Enterprise, HP 9000 K, L, N class server, IBM RS/6000, PSeries, Xserve's, HP/IBM/Blade Servers. VMware VMware Infrastructure Client and VMware ESXServer4.x/3.x/2. x.

Network Protocols: Services DNS/Bind, Samba, TCP/IP, NFS, Telnet, DNS, LDAP, SSH, DHCP, NAT, LAN, WAN, ARP/RARP, FTP/TFTP, ifconfig, route, NetStat, Xinetd, and HTTP.

Storage: SAN EMC Symmetrix 800/ DMX1000, 2000 & 3000, EMC CLARiiON 500, 600, 700, NetApp NAS

Databases: DB2, Oracle Web /Application Server Apache Tomcat, WebSphere, WebLogic

Automation Tools: Puppet, Chef, Kickstart, Jumpstart.

Mail Servers: SMTP, IMAP, and Qmail, Send mail, PostfixClusterVeritasClusterServer, MC/Service Guard, Sun Cluster

Languages: C, C++, Shell, Perl, Security SSH, SSL, IPchains, IPtables, Tcpdump, Wireshark, Tripwire, port scanners

PROFESSIONAL EXPERIANCE

Confidential, Santaclara, CA

Senior Unix Administrator

Responsibilities:

  • Working in an environment with approx... 2000+ servers, with Linux (RHEL- Red Hat Linux 4, 5, 6, 7), Solaris 9, 10, CentOS, Ubuntu, Novell SUSE Linux (9, 10), and HP-UX (11.23).
  • ITI compliant environment
  • Server builds using jumpstart, kick start, PXE Boot
  • Storage management using LVM, SVM, Veritas VXVM Volume Manager, ZFS, ZPOOL
  • Worked on stand-alone servers (Dell PowerEdge, T, M series) and virtualized environment (VMware vSphere 5.x, Oracle Virtual Machines)
  • Multi TB backend storage (EMC, NetApps, Oracle NAS) hosting variety of DBs and Apps. Provided Unix Engineering support to mission critical servers.
  • Bash scripting supporting Linux and Solaris servers. Good experience working with Java and C programming languages.
  • UNIX Admin and work on network implementation as in TCP/IP DHCP, SIP, NTP, IPV6 and RTCP and TIBCO based implementation.
  • Experience in analyzing logs for troubleshooting java application issues from server side.
  • Worked on changes on HMC directly from the Data Center in events of lost remote console Connection
  • Providing first level support to the branch users across India for their problems pertaining to the live banking.
  • Solving the issues of User/Branch and Host Server of HDFC Bank Using the SQL queries & UNIX Operating System.
  • Maintained and designed network and LINUX (Debian) Squid web-caching NATed firewall for Blossomland Supply and Communications Systems local LAN at both business locations.
  • Working on the unix platforms like Linux Redhat 5 & 6applying the Security patches and doing all the change management.
  • Administration and maintenance of servers running on Red Hat Enterprise Linux, Solaris and CentOS.
  • Successfully implementing pre-migration and post migration activities.
  • Providing Health check on servers on daily basis
  • Installation of Linux Operating System using Kickstart and PXE boot Installation methods.
  • Developed Scripts to automate daily activities
  • Amazon Web Services (AWS) and cloud technologies to migrate over from their current datacenter and virtual environments.
  • Designed and implemented Amazon Web Services (AWS) cloud based instances for use on their current and upcoming projects.
  • Created complex bash and kora shell (ksh) scripts for inventory management, performance troubleshooting, capacity management, user management for distributed servers, corn scripts
  • Scripting (bash, Perl) for job automation.
  • Amazon Web Services (AWS), EC2 Storage Managements integration and utilization within dis infrastructure and applications.
  • Infrastructure deployment, administration, troubleshooting and configuration virtual and cloud instances onAWSand VMware platforms.
  • ImplementedAWSsolutions using S3, RDS, EBS, Elastic Load Balancer, and Auto scaling groups.
  • Responsible for Design of different Release Environments for new projects and monitoring.
  • Implementing a Continuous Delivery framework using Jenkins, Chef, Maven & Nexus in Linux environment.
  • Managed Chef Cookbooks to automate system operations.
  • Performing updates and upgrades on the systems currently on the network for performance and auditing purposes.
  • Providing Support to networking services and protocols such as TCP/IP, NIS, DNS, NFS, LDAP, FTP, SSH, SMTP, SNMP, SSL, and HTTP.
  • Using JenkinsAWSCode Deploy plug-in to deploy toAWS.
  • Configured S3 versioning and lifecycle policies to and backup files and archive files in Glacier.
  • Work with different team members for automation of Release components.
  • Automate deployment and release distribution process. Develop and enhance the automated configuration management system. Control branching and merging of the code base.
  • Building and compiling code of varying complexity using scripting language such as Python and Bash.
  • Developed and customize monitoring scripts to meet customer needs using Ruby, Perl, Python, and shell-scripting
  • Experience in working with Veritas and Sun clusters

Confidential, Brown Deer, WI

Senior UNIX Administrator

Responsibilities:

  • Installation of RHEL (Red Hat Enterprise Linux) 5.X, 6.X, 7.X administrator and server maintenance
  • Using and configuring Red Hat Satellite server, Yum repositories and Troubleshooting activities.
  • Experience in Installation, configuration, patching, support to application and web server.
  • Administering Open stack environment. Built Solaris servers, including LDOMs and Zones.
  • Worked with backend multi-TB storage systems such as EMC, Netapps, and Hitachi using Volume Managers such as LVM, ZFS/ZPOOL, and VERITAS Volume Manager.
  • Providing On call support to production environment.
  • Numerous LINUX Debian file and print servers using samba throughout both campuses
  • Thirty workstation classroom and training using Debian LINUX.
  • Primary SME for security hardening of servers - providing solutions to pass internal and external audits for SAS70, PCI, HIPAA compliance for multi-OS platforms (Solaris, LINUX, AIX)
  • Worked as a primary onsite Admin for the Data Center production servers and Data Center migration for consolidation and tech refreshes.
  • Worked on AIX 5.3, 6.1, 6.2, with LPAR builds using NIM servers via HMCs.
  • Created Network VLANS, adaptors, andvirtual SCSI disks using NIM servers
  • Created service groups and failover groups using HACMP in multimode clustered environment
  • Worked in Java and programming in JavaScript, J2EE, JSR, JSF, AJAX, jQuery, JSON, RIDC.
  • Implemented Java based APIs to get health of NAS Storage Arrays on large scale.
  • Support of Applications like Apache Tomcat and Java based applications running on Linux machines for multiple clients.
  • Familiar with Hardware Management Console (HMC), Integrated Virtualization Manager (IVM), and IBM Systems Director Management Console (SDMC), VMware VSphere
  • .Monitoring & Maintaining and giving Support to Operators regarding the EOD(End of Day) and BOD (Beginning of Day) which is operated by Operator (CMS Team)
  • Removing the Locks of user id for the user/Bankers in Collection & disbursement server for avoiding the system in hang position using Simple queries and UNIX commands.
  • Using FIS in house tools - Change Management System (CMS / also non as CASE) for ticketing needs and STAR for inventory management.
  • Handling the UBS (Universal Banking Solution) in which mainly Three Modules are there FCC(Corporate A/c's), FCR(Retail A/c's) and GL (General Ledger of Corporate A/c).
  • Troubleshooting and fixing issues discovered by monitoring tools - Big Sister, Tivoli, Hubble, and Envision.
  • Implemented Java based APIs to get health of NAS Storage Arrays on large scale.
  • Developed System 3, 4 BSD and Unix based APIs for implementing configuration changes and gathering information from Linux and Solaris servers
  • Configured Elastic Load Balancers (ELB) with EC2 Autos calling groups.
  • Created monitors, alarms and notifications for EC2 hosts using Cloud Watch.
  • Developed startup and shutdown scripts for the WebLogic servers.
  • Excellent working noledge in configuring multiple WebLogic domains including machines, manage servers and cluster environments.
  • Disabling TLS v1.0 and enabling 1.2 using shell scripting.
  • Managed and maintained two mail servers, fax server and file services using LINUX Debian, Samba and CUPS for connectivity, file and printing from Windows XP, Windows 2000 and LINUX Debian workstations.
  • Installing open SSl for supporting AES under TLS for HTTP Apache webservers.
  • Developed startup and shutdown scripts for twehe WebLogic servers.
  • Installed, configured and administered WebLogic Server 10.3.x/11g on Red Hat Linux 5.x and Windows environment.
  • Web24X7 on call production support, technical support, and troubleshooting, problems related to oracle WebLogic Server.
  • Remediating security vulnerabilities by applying patch fixes according to CVE IDs.
  • Running scripts on multiple servers in a short span of time using the HP Automation Tool (HPSA).
  • Actively participating in Quarterly patching of servers.
  • Storage Techrefresh from Old Frames to new Frames for EMC (Symmetrix / Clariion / VMAX) Using Hostbased / Openreplicator / OpenMigrator for hosts running HP-UX/SOLARIS/LINUX with Native HP LVM/Veritas Volume Manager/ZFS.
  • Experience in Configuring, Administering & maintaining HP LVM / LINUX LVM & filesystems.
  • Created network interfaces and storage pins on HP-UX 11i.
  • HP UX 11i Superdome creation patching and user maintenance.
  • Working with hardware vendors (Systems Maintenance Services aka. SMS) and software vendors (Oracle / IBM / Red hat / Symantec) to troubleshoot/fix server hardware/OS issues.
  • Migrating servers from VAS to Boks server Autantication software.
  • Participating in DR tests.
  • Documentation of new installations and solutions.

Confidential, Boston, MA

UNIX Administrator

Responsibilities:

  • Responsible for Installation, Configuration and Administration of Red hat Linux 4.0/5.0, Solaris 10 comprising of testing, tuning, upgrading, and loading patches, troubleshooting both physical and virtual server issues.
  • Migration of Veritas Storage, Solaris and Linux servers and provided Storage Migration Support.
  • Data center migration by building new servers and data consolidation across different cities
  • Plan and implement assigned projects, change management, on-call support, and hotline bridge participation.
  • Installation, configuration and maintenance DNS servers, Mail servers, FTP servers, NFS, NIS, NIS+ and Samba Web servers on Sun Solaris, and Linux platforms.
  • Involved in setting up accounting systems and performing ongoing system with the administrative tasks. Extensive user and group management through admin tool.
  • Used Kickstart and Jumpstart for server builds and net booting.
  • Troubleshooting and analysis of hardware and software failures for various Solaris servers (core dump and log file analysis).
  • Configuring distributed file systems and administering NFS server and NFS clients and editing auto-mounting mapping as per system / user requirements.
  • Installation and monitoring of Sun Volume Manager, Sun Cluster Server in SAN Environment.
  • Providing 24 x 7 supports to various application level server level & network level Monitoring and troubleshooting of any datacentre outages.
  • Involved in development, user acceptance, performance testing, production & disaster recovery servers
  • VERITAS File system and VERITAS Volume Manager 3.2 are used to configure the RAID 1 and RAID 5 Storage Systems and Monitor Storage.
  • Installed and configured SAMBA server for windows and Linux connectivity.
  • Installed and Configured Sun availability Suite 3.5 to implement Point-in-time snap shots and remote mirroring.
  • Expert in Installing, configuring and maintaining SNMP, IP, apache/tomcat, samba & send mail, Web Sphere Application Servers.
  • Experienced with SAN and storage administration, with EMC Clarion & DMX storage administration.
  • Worked with storage team for migration of oracle backups from X86 environment to NetApp NAS environment
  • Support groups responsible for monitoring datacenter backups and troubleshooting backup errors.
  • Configuring Sun Multi-Packs, Storage Arrays, T3’s and SAN backup for disaster recovery.
  • Installed and Configured EMC SAN Power path.
  • Implemented and configured Backup policies and Storage Units.
  • Worked on Open Shift using Dockers for rapidly deploying in scalable fashion
  • Created custom plans, SSL certs (using open SSL) for working across multiple clients
  • Open Shift HA cluster upgrade with now downtime
  • Deploying applications using Open Shift from UAT to Prod envs
  • Supported Middleware application teams such as WebLogic, java, http, apacheon RHEL platforms
  • Helped in setting up round robin configuration from WebLogic middleware team to Oracle DB servers for HA
  • Helped create log rotation and clean up scripts for middleware team via crone
  • Helped in setting up SSH password-less keys (RSA, DSA) for deploying middleware builds just as WebLogic war files

Confidential, Plano, TX

Unix System Administrator

Responsibilities:

  • Installation, configuration and Operating System upgrade on Sun Solaris 9,10, AIX 5.X and Red Hat Linux AS 4.0/5.0 on sun Servers
  • Maintaining/troubleshooting of Linux instances on VMware server
  • Involved in the Implementation of Sun Fire 4800/6800, VERITAS Cluster Server 3.5/4.0 and Oracle RAC environment.
  • Provided support in installation and configuration of Web services, Web Sphere MQ, WBIMB.
  • Administration and Troubleshooting Solaris servers running business critical application & Web Logic (WAS) applications.
  • Maintained and troubleshoot of Linux instances on VMware servers
  • Support infrastructure systems running VMware VSphere 4.0, CentOS, Red hat Linux, JBOSS Application Server and Oracle Databases
  • Expert in Installing, configuring and maintaining SNMP, IP, apache/tomcat, samba & send mail, Web Sphere Application Servers.
  • Install, setup, and utilize the Jumpstart server for OS provisioning of Solaris.
  • Expertise in Console management, log file Administration and disk administration
  • Storage setups, RAID, Logical Volume Manager, system backup design and disaster recovery.

Confidential

Unix Administrator

Responsibilities:

  • User administration, management & archiving.
  • Performed automated installations of Operating System using Jumpstart, Kickstart for Linux.
  • Installation of patches and packages.
  • Disk and File system management through LVM (HP-UX, AIX, Linux)
  • Experience with configuring and managing Virtual disks, Disk Mirrors and RAID 0, 1 and 5 levels.
  • Provided functional and technical support, troubleshooting and diagnosing hardware and software problems, includingdesktop, laptop, WAN, LAN, and remote systems.
  • Assisted in the installation and updating of software, as well as the setup and troubleshooting of all equipment.
  • Provided functional and technical support, troubleshooting and diagnosing hardware and software problems, includingdesktop, laptop, WAN, LAN, and remote systems. Assisted in the installation and updating of software, as well as the setup and troubleshooting of all equipment.
  • Maintaining the CPU & Memory utilization of Unix/Linux Servers reports on the WEB.
  • Extensively worked in data and database migration from older machine to latest configurations.
  • Installation, setup, configuration, security administration and maintenance for flavors of servers.
  • Implemented Security Hardening per company policy using Solaris 10 features.
  • Responsible for server decommission/reassignment and Network cabling.
  • Responsible for maintaining current software and hardware patch updates for all servers.
  • Responsible for documenting and maintaining complete and accurate information for all active and decommissioned servers.
  • Demonstrated ability to gather relevant information and diagnose issues effectively and efficiently
  • Assisted in troubleshooting user problems relating to Network Connectivity, and TCP/IP configuration.

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