Linux Administrator Resume
El Dorado Hills, CA
SUMMARY
- Over 8 years of experience in Administration of Red Hat Linux, SUSE Linux and Solaris.
- Experienced in Installing, configuring and administering Red Hat Linux 3.0 /4.0/5.x,SUSE Linux, Solaris 8/910, Dell, IBM and HP x 86 Servers.
- Design and Implementation of migration strategy for consolidating Data Centers from around the world to two centralized locations in US which involves 6000+ servers of various Windows versions.
- Identification, planning and migration of P2V candidates and new builds from each site wifout any downtime.
- Consolidation and Capacity planning of Physical Servers using Cirba.
- Using Server automation (BladeLogic) too to run the scripts/patches in multiple servers.
- Performed Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESXi, Vcenter and VM tools.
- Creating and managing Virtual Machines and Templates, worked wif clones and snapshots of Virtual Machines.
- Knowledge in Component Object Model (COM) and Distributed Component Object Model (DCOM).
- Automating and building the Windows 2k3 and 2k8 servers using BMC Blade Logic Automation tools.
- Using robocopy, and Plate Spin to copy data from source to target over the LAN.
- Experience in transformation and remediation process.
- Involved in installation, configuration and testing of Double - Take Share for Data Transfer for Solaris and AIX Servers.
- Troubleshooting, documenting and knowledge transferring of Double Take process to the BUs.
- Involved in migration of project from one flavor to another one.
- Knowledge in IIS6 & IIS7 administration.
- Strong Experience on Migrating from Windows 2000/ using Double-Take Availability.
- Works closely wif Java Team to deploy the application and trouble shoot.
- Implemented and Enhanced the Existing Scripts which are developed in Shell, Perl, and SQL.
- Worked wif Backup Team to Configure the Master and Client Backup servers Using VERITAS Net Back up 4.5/5.0
- Experience in virtual infrastructure and Enterprise Cloud technologies.
- Configuring Kickstart Servers and booting the images using PXE in Red hat Linux (RHEL).
- Installed OS by using Kickstart, NIM and Ignite methods.
- Extensive experience in installing, integrating, tuning, and troubleshooting Apache, Tomcat and WebSphere application server and webserver, webfocus IHS Also involved in troubleshooting.
- Good understanding of testing cycles and Worked closely on UVT, AVT& IVT Testing’s.
- Experience in Windows file/print servers, Windows clustering, Symantec Enterprise Vault, Netbackup& VMware. dis is primarily a Windows Administrator wif working knowledge of Netback up, VMware.
- Expertise in Volume management, Disk Management, software RAID solutions File system Tuning and growing.
- Disk and File system management through Logical Volume Manager (LVM) on IBM AIX & LINUX and experienced in RAID 1, 5, 10, configuration.
- Knowledge of “JON” - JBoss Operations Network.
- Experience in SQL Server 2002/2005/2008 in Installation and Configuration.
- Configured SAMBA, FTP/SFTP, DNS, LDAP, I-planet, Apache HTTP servers.
- Good experience and understanding of SAN (SAN arrays; HITACHI, EMC) technology including zoning, disk creation on various systems, maintaining and configuring various fiber switches and storages.
- Experience wif Methodologies of Agile & Scrum.
- Knowledge in XML schema.
- Experience in network administration, deploying and troubleshooting of TCP/IP, Ethernet, SMTP, DNS, LDAP, NIS, NFS and DHCP etc.
- Expertise in System performance tuning, capacity planning and Disaster Recovery planning.
- Experience wif patching of Linux and IBM AIX servers and hardening of servers using native and third party tools.
- Knowledge of Routers and Switches, Subnet, VLAN, TCP/IP, VPN, OSI model, Firewall (checkpoint), VOIP, and Sarbanes Oxley compliance (SOX).
- Extensive experience in programming wif C, C++, Device driver, Application Services on UNIX, Windows Host.
- Experience in Shell scripting (ksh, bash, perl) to automate system administration jobs
- Extensive experience in UNIX performance monitoring and kernel tuning and Load balancing to ensure stable performance.
- Proficient in Installation, configuration, maintenance of open LDAP server and applications integrated wif Apache Web server and Postfix mail server for user authentication.
- Strong technical background in Storage, Disk, Process, User Management, Logical Volume Management (LVM) and logical partitioning.
- Good Knowledge in virtualization using WPARS & LPARS on IBM Power environment.
- Works closely wif Network and security team to open the required ports for communication
- Excellent communication skills, enthusiastic wif the drive and determination to do whatever it takes to get the job done.
- System automation and Configuration Management tools
- Puppet configuration and implementation
- Knowledge on CFEngine
- Cloud service and support
- Good understanding on Amazon AWS console
- Implementation knowledge on EC2 virtual server in Amazon cloud
- Good knowledge on Route 53 Amazon DNS services.
- Understanding of Amazon S3 like creation and deletion and Amazon signed URLS
- Knowledge on Amazon Elastic Transcoder service to create pipes and jobs.
TECHNICAL SKILLS
Operating Systems: Linux (Red Hat & SUSE), HP-UX 11.0, 11.11, 11.23, 11.31, IBM AIX (4.3/5.x/6.x/7), SLES 8,9,10 & 11, Windows NT /2003/2008.
Hardware: HP Proliant DL 380, 580, 480 G4, G5, G6 &G7 servers, HP Blade Enclosures C7000 & C6000, IBM P550, 650, 660, Dell PowerEdge 2800,r310, r410, r710, Intel Servers, Extreme network and Cisco switches, Brocade Switches, A1000, A5200, 3510, 3511, D1000, Sun Store Edge T3, 9980
Networking: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP.
WEB Technologies: Tomcat, APACHE 2.x, 3.x, Web Logic (8/9/10) & Web Sphere 4.0/5.0,IIS6.0/7.0, C, UNIX Shell Scripting, Perl Scripting, HTML, Perl, VB.
Programming Languages: C, UNIX Shell Scripting, Perl Scripting, HTML, Perl, VB
Backup Management: 4.x/5.x/6.x, Ufsdump, Ufsrestore, tar, cpio, dd, Tivoli
Third Party Software: VERITAS Volume Manager, EMC Storage, RAID Technologies, SSL, Double-Take, BMC Blade Logic.
Protocols: TCP/IP,UDP RIP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET
PROFESSIONAL EXPERIENCE
Confidential, El Dorado Hills, CA
Linux Administrator
Responsibilities:
- Worked on variety of Linux platforms Red Hat Linux, AIX, Solaris which includes installation, configuring and maintenance of applications on dis environment.
- Works wif Symantec and BSC team to setup the Symantec O3 IDLINK Open VPN Servers.
- Build servers using Kick Start, Red Hat Satellite Server, and vSphere Client
- Updating patches to keep servers updated against bugs present in the operating system using Red Hat Satellite Server, yum, etc.
- Worked exclusively on VMware virtual environment.
- Experience in using VMware vMotion to move VM’s from One Datacenter to another datacenter.
- Involved in installation and configuration of various Third party software onto servers.
- Installed, configured and provided support for Tivoli Monitoring software across various OS platforms like RHEL, AIX and Solaris.
- Installed packages using YUM and Red hat Package Manager (RPM) on various servers.
- Troubleshooting network administration, IIS configuration, DNS setup and modifications, firewall rule sets, local and distributed director, connectivity, and supporting applications.
- Worked wif Red Hat Satellite Server which is used to push changes across various servers simultaneously.
- Performed the daily system administration tasks like managing system resources and end users support operations and security.
- Responsible for independent support of Tier 2 issues: reboots, start/stop services, reset Terminal Service and pc anywhere connections, and administrative server maintenance. Daily follow up wif clients to ensure resolution of all issues.
- Provide support to Account Managers, UNIX and Windows technicians, and other departments
- Involved in ILMT Agent Deployments and Oracle/SQL Upgrade project which includes various UNIX builds of different OS platforms across various data centers.
- Used Logical Volume Manager for the management of Volumes including creation of physical and logical volumes on Linux.
- Co-ordinated wif various cross functional teams across IT operations to make sure smooth functioning of projects.
- Worked closely wif DBA Team in order to adjust kernel parameters as per requirements.
- Day to day resolution on Linux based issued though SMS ticketing system in compliance to SLA cycles.
- Performed application installation and management on IBM AIX and Linux servers for applications like Web Sphere Application Server (WAS) 7, JBoss 4.2.x, 5.x, Sun JES Web Server 6.1, Oracle 10g, Sybase 12.5 etc.
- Automating many day to day tasks through Bash scripting.
Environment: Red hat Enterprise Linux 4.x/5.x/6.1, AIX 6.x, Solaris 8/ 9/10, Tivoli Storage Manager, VMware ESX5, Tivoli Net backup, and Web sphere. Windows 2008 servers, Windows 2003, IIS 7.0 & 7.5.
Confidential, Fort Worth, TX
Systems Migration Engineer
Responsibilities:
- Installation and configured SLES 9, 10 &11, Red hat 4.x, 5 on Dell Power Edge Blade servers using Kickstart wif PXE for LAMP (Linux, Apache, MySQL and Perl/PHP) installations and disaster recovery setup.
- Installation, configuration and testing of Double-Take Share for Data Transfer for Solaris and AIX Servers.
- Implementation of VMware Infrastructure for Windows, SLES 11 & Linux Red hat 5.0 wif VMware ESX 3.5, Virtual Center 2.5 and administered the VMs wif VI client.
- Installation and configured SLES 9, 10 &11, Red hat 4.x, 5 on Dell Power Edge Blade servers using Kickstart wif PXE for LAMP (Linux, Apache, MySQL and Perl/PHP) installations.
- Migration of applications from Linux (Redhat& SUSE) to Windows2003/2008 and resolving any dependency issues after live upgrade.
- Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat and Web Sphere application server and Web sphere IHS including troubleshooting.
- Used Logical Volume Manager for the management of Volumes including creation of physical and logical volumes on Linux
- Experience in supporting Windows Cluster server running 2-4 nodes on Windows 2000,2003 and 2008 supporting applications like web servers, SharePoint and Active Directory environment.
- Strong Experience on Migrating from Windows 2000/ using Double-Take Availability.
- Using blade logic automation tool to add and remove the Confidential Standard’s stack.
- Worked on User administration setup, maintaining account, Monitor system performance.
- Activities includes user administration; startup and shutdown scripts; crontabs, file system maintenance, backup scripting and automation using Perl, shell scripting (bash, ksh) for Red Hat Linux and AIX systems.
- Performed application installation and management on IBM AIX and Linux servers for applications like Web Sphere Application Server (WAS) 7, JBoss 4.2.x, 5.x, Sun JES Web Server 6.1, Oracle 10g, Sybase 12.5 etc.
- Adding patches to keep the servers updated against bugs present in the operating system as well as other applications like VERITAS Storage Foundation, Web Sphere and Oracle.
- Implemented and administeredVMware ESX 3.5, 4.xfor running the Windows 2003/2008 Servers on development and test servers.
- Worked extensively wif Active Directory Services, Web Services(IIS Servers), DNS, DHPCP, SQL Database Servers and Business Application Servers
- Modified the Linux kernel to add tracing probes for Config access tool.
- Worked on user management and groups, worked on creating the users policy on the ACX end point.
- Expertise in installation, configuration and administration of Windows 2000/2003/2008 servers, Active Directory and exchange server.
- Creating User Accounts and Groups in Active Directory
- Remote Desktop Monitoring using Microsoft Terminal Services/Client.
- Interacting wif all the team members both in offshore as well as wif the client in maintaining good customer relationships
Environment: Red hat EL 4.x, 5.x, Windows Server 2000/2003/2008 , Double-Take,BMC BladeLogic, Web Sphere Application Server 10, JBoss 4.2.x, 5.x, Sun JES Web Server 6.1,Sql, Oracle 10g, Sybase 12.5, Stellent 7.5.1, Samba 3.3.x, EMC Symmetrix DMX-3.
Confidential, NH
Linux Engineer
Responsibilities:
- Administration and support of Unix Servers including SUSE, IBM AIX & Red Hat Linux and CentOS.
- Creation of VMs for SUSE, Solaris x86 and Redhat Linux on VMWare ESX 3.5 and administering them wif VI Client.
- Performed volume management using SVM and LVM and the creation of zfs, VxFS, UFS and ext3 file systems.
- Installation and support of various applications including WebLogic 10, JBoss 4.2.x, Oracle 10g, Sun Java System Web Server 7, Tomcat, JDK 1.5, Ant.
- Created and Maintained User Profiles for all new users via Windows NT/2000 Server User Manager for Domains
- Installation, configuration & administration of Windows 2000/2003 Server, IIS-5.0, Active Directory & Exchange 2003 Server and updating the Windows 2003/2008 patches.
- Managing, Supporting and troubleshooting wif remote as well onsite support for Customers to resolve server
- Provisioning of LUNs from SAN based on McData Switches and Hitachi Based Storage.
- Performance tuning and troubleshooting of the applications and resolution of issues arising out of the ticketing systems in Remedy.
- Monitoring the servers using tools like BMC and Nagios and providing 24x7 support on call rotation basis.
- Modified the Linux Kernel (2.4) to control the swappiness.
- Decommission of the servers/service groups which include: removal of DNS, take full ad-hoc backup of file systems, removal from backups, removal of patrol monitoring, removal from AD, keep autosys jobs ON-ICE, removal from CME etc.
- User administration of UNIX / Linux account using SeOS and also used sudo / RBAC for assigning special privileges to the users.
- Worked on Remedy project and resolved Remedy tickets as assigned to the individual or team
- Involved in development, user acceptance, and performance testing, production & disaster recovery server.
- Extensive experience in programming wif C, C++, Device driver, Application Services on UNIX, Windows Host.
- Strong scripting knowledge on Perl, bash, ksh, to perform different administration tasks.
- Backup and restore of file systems using VeritasNetbackup 6.5.
Environment: SUSE 9,10, Solaris 8, 9, 10, Redhat 3, 4.x,VM Ware ESX 3.5, Virtual Center 2.5, BMC Patrol for Unix, Apache 2.2.x, Sun Java System Web Server 7, WebLogic 10, ksh, bash, Oracle 10g, Sun SPARC Enterprise T2000, T5120, Sun Fire v890, 6800, x4100, x4150, E6900, M5000, M 8000, 3510, 3511, Hitachi Lightening 9970v.
Confidential, Dallas, TX
Linux Administrator
Responsibilities:
- Installation of Oracle 10g on the Sun servers running Solaris 8, 9, SUSE Linux ES 10 and Redhat AS 2.1, EL 3 and 4.x.
- Experience on working wif a SAN environment which included working wif SAN teams and the environment included Brocade Silkworm 4900 switches, EMC Symmetrix DMX 4 and Sun StorEdge 9980
- Installing and upgrading Solaris 8, 9, 10, IBM AIX 5.x/6.x, Redhat EL 3, 4.x and SUSE EL Server 10 sp1, sp2 operating systems.
- Involved in building AIX servers using NIM server on various IBM Power servers and KickstartingRedhat EL 3, 4.x, 5.x
- Creating resource pools, zones and containers on Solaris 10 and v490s, v890s to optimize and consolidate the use of the hardware.
- Worked on LAMP for configuring Mantis Bug tracking tool and Wordpress blog software.
- Installing Veritas Volume Manager 4.1. Implementing RAID and creating Disk Groups, Volume and Logical volumes using VxVM on Solaris to manage the storage resources and creating, resizing and managing volumes and used LVM on IBM AIX, Linux to create Volumes on the Volume Groups, Volumes and file systems.
- Mirroring the root disks using Sun Volume Manager.
- Installed and Configured High Availability, Disaster Recovery systems using Veritas Cluster Server 4.1 on a two node cluster for NFS and MQSeries.
- Configuring, administering and troubleshooting of NFS, NIS (master, slave and client) and DNS (Bind 8.2.x and 8.3.x) in multi-platform networks dat included IBMA IX & Linux.
- Updating patches to keep the IBM AIX, Linux and Solaris servers updated against bugs present in the operating system using patch administration commands like swlist, swinstall, patchadd, showrev, yum, up2date etc.
- User, Group management and security policy management for the all servers including Windows and UNIX using RBAC, sudo etc.
- Installing, configuring and troubleshooting Sun Java System Web Server 6.x, 7 and Apache 2.2.x web server on IBM AIX.
- Responsible for Installation, configuration and administration of middleware like WebLogic 9.0, JBoss 3.2, CA Web Access Manager (WAM) and MQ Series v 7.0 etc.
- Performance Analysis of resources like CPU, Memory, Disk and Swap from command line using commands like prstat, vmstat, sar, iostat, swap etc. and tuning of the kernel parameters for the better performance of the operating system and TCP.
- Was involved in creation of a Project plan and the implementation of a backup solution using VeritasNetBackup 5 and StorageTek L700 tape libraries.
- Modifying/ Writing scripts for day-to-day job and administration.
Environment: Redhat 8, 9, AS 2.1, EL 3, 4.x, SLES 10 sp1, sp2, IBM AIX 4/5/6, Veritas Volume Manager 4.1, Veritas Cluster Server 4.1, VeritasNetbackup 5, BMC Patrol for Unix, Apache 2.2.x, Sun Java System Web Server 6.x, 7, WebLogic 8.x, 9.0, JBoss 3.2, MQ Series 7.0, CA WAM, System 5 Packaging, Perl, Oracle 10g, v880, v490, v890, 6800, x2100, x4200, SunFire T2000, M5000, M 8000, Brocade Silkworm 4900 switches, EMC Symmetrix DMX 4, Sun StorEdge 9980, StorageTek L700
Confidential
Systems Administrator (UNIX)
Responsibilities:
- Configured firewall based on Redhat Linux and FreeBSD 4.x dat TEMPhas three network interfaces.
- Implemented a High Availability Cluster using 2 V480s, a T3 and Veritas Cluster Server 4.0.
- Installation, Maintenance, Administration and troubleshooting of IBM AIX 4/5 and Redhat 9, AS 3.0 servers on various hardware platforms dat include IBM Power servers & Dell 6400, 2400, 1800 etc.
- Performed automated installations of Operating System using NIM for AIX and Kickstart for Linux.
- Extensively worked on hard disk mirroring and stripe wif parity using RAID controllers
- Designed bash, ksh, and Perl scripts to automate application and system management activities. These scripts provided the following functionality: application startup and shutdown, monitored systems and applications health, and web site management
- Installation, Management, Configuration of LAN/WAN systems utilizing Cisco switches and routers.
- Configured various services, devices as well as applications of UNIX servers and worked wif application team to customize the environment. Worked wif Apache and developed several UNIX scripts to automate web tasks
- Managed existing documentation for systems and created new procedures to support new products. Created documentation for disaster recovery project.
Environment: IBM AIX 4/5, Redhat Linux 9, AS 3.0, Veritas Volume Manager 3.x, 4.0, Veritas Cluster Server 4.1, Cisco Routers, Sun 4800, V480, 280R, 4500, 3500, Dell 6400, 2400, 1800 Redhat 8, 9.
