Unix System Administrator Resume
Mount Laurel, NJ
SUMMARY
- 8 Years of Experience in UNIX/LINUX Systems and Network administration for Sun Solaris 9, 10, Linux RedHat (RHEL 4, 5, 6), CentOS, SUSE, Debian, OEL & HP - UX 10.x, 11.x.
- Experience in installation, configuration file system management through Logical Volume Manager (LVM), VERITAS Volume Manager (VxVM), Solaris Volume Manager (SVM).
- Configuring and maintaining virtual server environment using VMWARE ESX/GSX, VSphere, VCenter.
- Volume and Filesystem management using Veritas Volume Manager (VxVM) and Veritas Filesystem (Veritas Storage Foundation).
- Clustering solutions for High Availability using tools such as Veritas Cluster Server (VCS), RedHat HA (RHCS), and MSCS.
- Good knowledge of RAID groups and setting up NFS, CIFS and iSCSI protocols in SAN/NAS environment on HPUX 11.23/11.31 and Redhat LINUX.
- Experienced in system administration, System planning and design, co-ordination and communicate at group level and user level.
- Configuration, implementation, troubleshooting and administration of NFS, NIS, DNS, and LDAP on Solaris and Linux environment.
- Installation, Configuration and Maintenance of Samba, Apache Tomcat, Web Sphere and Linux environment.
- Experience in Patch management, Disk management, Security, troubleshooting, Disaster Recovery and Planning.
- Experience in SAN and VERITAS NetBackup administration.
- Performing regular day-to-day Systems Administration activities such as User Administrations, Disk Management, Package Install, Patch Management, Storage Management, Performance Monitoring; Log files Monitoring, Jobs Scheduling, NFS Administration and Disaster Recovery/fail-over exercises.
- Proficient in Shell Scripting (Bash), Sed & Awk.
- Ability to plan, schedule and execute projects on time.
TECHNICAL SKILLS
Operating Systems: Linux (Red hat - RHEL 3/4/5/6), Fedora Core 17.x/16.x, Ubuntu 12.x/13.x, HP-UX, Solaris, Windows 03/00/NT4.0.
Hardware: HP DL380 G5/G6/G7/Gen8, Dell Poweredge 1950, 2300, 2450, R810. IBM RS/6000, IBM Blade center, JS20, JS21, HS20, pSeries 570, 590, 595, 650, 630, 670, 780, 770, 750, 740, 730 SUN Enterprise 450.
Web Servers: Apache (httpd), apache-tomcat, jboss, weblogic. Tomcat, Apache, WebSphere, Apache Http Server, IIS 4.0/5.0, MQ Series.
Languages: C, Clearcase, Shell scripting Ksh & Bourn Shell, JavaScript, HTML, JAVA, C, C++, Korn Shell programming, PL/SQL
Databases: Oracle 8i/9i/10g, DB2, MS SQL SERVER 7.0/2000, SyBase.
Networking: NIS, NFS, AutoFS, DNS. TCP/IP, DNS, DHCP, Cisco Routers/Switches, and LA
Other Skills: VMware, VCenter Server, VMware Server, Xen, Solaris Zones. LPAR, NIM, TSM IBM tape libraries.
PROFESSIONAL EXPERIENCE
Confidential, Mount Laurel, NJ
Unix System Administrator
Responsibilities:
- Worked as Linux Administrator Supporting the Server farm in 24X7 Production Environment.
- Supported Red Hat Linux (RHEL 5.7, 5.8 and 6.4)
- Installation/Administration of RHEL 5.7 5.8 and 6.4 on Multiple Servers (configuration, testing on both physical and virtual machines).
- Install and configure various services like DHCP, NFS, DNS, Apache Web Server, NIS, LDAP, Samba, SSH, FTP/SFTP, Sendmail/SMTP, Telnet, RPM Package Management, File System Management.
- Developed Shell Scripts for automation of daily tasks.
- Develop Linux shell scripts to accomplish redundant tasks to simplify in distributed administration.
- Worked on Security/Authorizations; Created users with limited and full root privileges. Create and manage sudoers.
- Perform day to day Linux administration such as user accounts, logon scripts, directory services, file system shares, permissions. Support Oracle database.
- Setup NFS and Samba File sharing on Linux and Windows servers.
- Develop and maintain the documents, library and procedural documents of the system.
- Utilized Remedy for data center service requests (Network requests for IP’s, ILO’s, and DNS changes).
- Acquired comprehensive requirements from Project Managers, Team Leads pertaining to the servers to be migrated.
- Responsible for resolving network issues using network tools like ping, tcptraceroute, traceroute, tcpdump.
- Performing change management as per company standards in accordance with the hardware provider.
- Horizontal and Vertical Clustering. Setup Node Managers and Admin Servers.Attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment.
- Setting up cron schedules for backups and monitoring processes.
- Automated server building using System Imager, PXE, Kickstart and Jumpstart, for Solaris and RHEL Servers.
- Upgrades, installs, configuration and administration security and monitoring tools on Linux.
- Excellent in patches and packages installation on Linux/Unix Environment.
- Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
- Experience in Linux kernel configuration.
- Updating YUM Repository and Redhat Package Manager (RPM).
- Monitored Linux server for CPU Utilization, Memory Utilization, and Disk Utilization for performance monitoring.
- Building Customized Scripts / LVM for the SAN (HOST) based migrations.
Confidential, Irving, TX
Linux System Administrator
Responsibilities:
- Designed, set up, installed, configured and performed administration of Red Hat Linux servers.
- Setup automated installs for Linux servers (Redhat, Fedora and Ubuntu) using Kickstart.
- Used Nagios for Deployment on Server Farm of over 300 Linux Servers and monitoring.
- Setup NFS and Samba File sharing setup on Linux and Windows servers.
- Setup and configured Apache in Redhat servers RHEL 5.6/5.5/Ubuntu.
- Configured virtual switches, network interfaces, port groups, data stores using GUI and CLI.
- Installed Apache HTTP Server 2.4 and MySQL Database on Linux Boxes.
- Used VMware P2V to migrate from physical to virtual
- Worked on Solaris servers supporting all the OS administration, application and hardware issues.
- Very good working experience on Redhat Satellite Server upgrading and patching.
- Building Linux servers by using VMware ESX 3.0 and also involved in channels and pushing the packages in Redhat Satellite Server.
- Implemented upgrade of servers using Redhat Satellite Server.
- Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using Veritas Cluster Server in SAN environment.
- Setup NFS file systems and shared them to clients.
- Troubleshooting and configuring NAS and NFS mount points.
- Troubleshooting network, application, and server related issues.
- Scheduling of automatic repetitive Jobs, and Shell Scripts with Crontab.
- Monitoring Virtual memory, Swap management, and Disk and CPU utilization by using various monitoring tools.
- Installed, configured and managed VMware infrastructure (ESXi, Virtual center).
- Perform standard system administration tasks, such as patching, software and hardware upgrades, troubleshooting and problem resolution.
- Install and configure various services like DHCP, NFS, DNS, Apache Web Server, NIS, LDAP, Samba, SSH, FTP/SFTP, Sendmail/SMTP, Telnet, RPM Package Management, File System Management.
- Responsible for resolving network issues using network tools like ping, tcptraceroute, traceroute, tcpdump.
- Develop Linux shell scripts to accomplish redundant tasks to simplify in distributed administration.
- Create users with limited and full root privileges. Create and manage sudoers.
- Perform day to day Linux administration such as user accounts, logon scripts, directory services, file system shares, permissions. Support Oracle database.
Confidential, Lakewood, CO
Solaris/Linux System Administrator
Responsibilities:
- Involved in UNIX/LINUX System and Network administration in Sun Solaris (9/10), HP-UX 11.31, Linux (RedHat 5/6) servers running different Database and Middleware Applications.
- Storage Provisioning, Volume and Filesystem Management using LVM, Veritas Volume Manager and Veritas Filesystem (Veritas Storage Foundation), Configuring ZFS filesystems.
- Build two new VMware ESX Server 4.x/5.x on HP HW running Red Hat Enterprise Linux & Created different virtual machine like Debian, windows 2003 & 2008 server, SuSE enterprise Linux using VMware Virtual Infrastructure Client tool and configured with EMC storage box.
- Supported around 200+ whole root zones running on Solaris 10 environment.
- Maintained 15 VMware ESX server connected with two EMC VNX SAN box and managed of two Cisco MDS switch using Fabric & Device management tool.
- Clustering solutions for High Availability using tools such as Veritas Cluster Server (VCS), MSCS, RHCS.
- Configuring and maintaining virtual server environment using VMWARE ESX, VCenter VSphere, and Solaris 10 Zones.
- Installation and Configuration of Sun Enterprise Servers, HP and IBM Blade Servers (C6000 & C7000), HP Itanium, Configured Enterprise UNIX/LINUX systems in heterogeneous environment (Linux, Solaris, HP-UX) with SAN/NAS infrastructure across multiple sites on mission business critical systems.
- Setup, Implementation, Configuration, documentation of Backup/Restore solutions for Disaster/Business Recovery of clients using OMNIBACK on UNIX and LINUX platform.
- Performed quarterly patching of Linux, Solaris and HPUX servers on regular schedule. Involved in up Network/SAN based ignite images for HPUX PA RISC and integrity servers.
- Good knowledge of RAID groups and setting up NFS, CIFS and iSCSI protocols in SAN/NAS environment on HPUX 11.31 and Redhat LINUX.
- Implementation of oracle RAC 10g on HPUX blades and Itanium servers with Redhat linux RHEL 5.x/6.x along with SAN storage on EVAs.
- Also implemented and support HPUX Service guard on Linux servers.
- Involved and set up migration for UNIX/Linux server and SAN storage between data centers and also application migration and testing.
- This included SAN/Application migration and testing various functionalities of key applications.
- Installing, setup of proliant blade BL,DL series with fiber channel connectivity, Cisco GESM interconnect switch, configuring the connectivity, setting up JBOSS cluster, setting up oracle RAC cluster, configuring load-balancing on apache, on Redhat Linux 5.x Setting up NIS/NFS on RedHat servers.
- Setting up JBoss cluster and configuring apache with JBoss on RetHat Linux. Proxy serving with Apache. Troubleshooting Apache with JBoss and Mod jk troubleshooting for the clients.
- Setting up the lab environment with Tomcat/Apache, configuring the setup with F5 virtual load balancer for customer application.
Confidential, Dallas, TX
Solaris/Linux System Administrator
Responsibilities:
- Installed, upgraded, Mirrored and configured RHEL 4.x and Sun Solaris 10/9.0/8.0 using Kickstart, Jumpstart Installation respectively.
- Upgraded Solaris 8 to 9 and 9 to 10 on Sun servers and workstations. Added necessary patches using patchadd utility and scripts.
- Controlled disk operations, disk group operations, volume operations and volume configurations using vxdisk, vxdg, vxassist, vxmake and vxvol in Veritas Volume Manager.
- Configured Printers, Print Server and Print Clients using commands like lp, lpstat, lpadmin, lpfilter & GUI.
- Configured and administered Samba to provide file services, resolved various inter-operability issues between Windows NT & Solaris platforms.
- Installation, Setup and Configuration of WebLogic 9.0/8.1 application server.
- Deployed Portlets manually using Admin Console.
- Disk Management using different RIAD technologies in Solaris and Linux using Veritas Volume Manager and LVM.
- Veritas Cluster Installation and Configuration along with Resources and Service Groups Configuration in VCS.
- Configuration and administration of DNS, LDAP, NFS, NIS and Samba in RedHat Linux, and Sun Solaris.
- Network trouble shooting using ndd, traceroute, netstat, ifconfig and snoop.
- Administered and Managed Network Applications and Services like NFS with Hummingbird connectivity V7.1.
- Involved in Configuring DHCP server and giving IP addressing dynamically.
- FTP Server configuration in Linux and done kernel tuning on Linux for play out software.
- Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software and directories & files using access modes.
- Written Shell scripts to run Batch Jobs on Sun Solaris and RedHat Linux servers.
- Provided system performance reporting on a regular basis along with keeping all software at current version levels, and maintaining a log of changes for tracking.
Confidential, Phoenix, NV
Solaris/Linux System Administrator
Responsibilities:
- Worked on migration Project from Solaris 9, 10 to Redhat EL6x.
- Configured and Troubleshoot Network Interface NIC on Linux environment.
- Experience in adding swap and updating under /etc/fstab.
- Worked on installing and deleting kernel modules.
- Performed Disk administration using LVM’s and implemented file system expansion.
- Worked on Disk replacement, Root mirroring in Solaris on HP-UX servers.
- Performance Analysis of resources like CPU, Memory, Disk and Swap from command line using commands like prstat, vmstat, sar, iostat, swap.
- Modifying/ Writing scripts in Bash and Korn shell for optimizing day to day administration like (system checkout, monitoring and reporting scripts).
- Worked on LUN Mapping using multipath on Linux server.
- Worked on RAID implementation using mdadm utility.
- Extensively used RPM and YUM.
- Extensively used svcs commands on Solaris.
- Extensively used chkconfig in LINUX.
- Worked with database team and modified Oracle database scripts.
- Configuring password less login through SSH. Generating key using ssh-keygen.
- Experienced on Installing, Compiling various source code for the application.
- Worked on system backups using Rsync.
- Worked on Job scheduling using CRON.
- Worked on web/app application like Apache GemPak, LDM for weather applications.
- Experienced on different monitoring tools HP, AWSTAT.
- Worked on Change management, ticket SLA’s using Remedy.
- Worked on Project management using Gantt chart identifying critical path.
- Have done many root cause analysis with the team and management with BP
- Have done Documentation on different SOP’s ( Standing operating procedures)
- Worked with various groups on resolving issues with User management.
Confidential
UNIX/Linux Systems Administrator
Responsibilities:
- Responsible for day-to-day System Administration for Linux RedHat servers.
- Build the E450 and 6000 Servers with Solaris operating system.
- Storage setups, RAID, Logical Volume Manager, system backup design and disaster recovery.
- Systems performance monitoring.
- Solaris Operating Systems upgrade, package installations, updates, patches and software fixes.
- Responsible for troubleshooting end user and application problems.
- Veritas File system and Veritas Volume Manager.
- Creating User accounts, Mail account, groups, printer etc.
- Monitoring system resources, logs, disk usage, scheduling backups and restore.
- Set up Quotas for the user accounts & limiting the disk space usage.
- Creation/Configuration of Additional swap/ tmp dynamically as and when required.
- NFS Management - Take care of user accounts/groups, setting up of NFS Environment.
- Solving the problems as & when created when NFS data being accessed.
- Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.
- Assembling the systems and installing operating system and application software.
- Training for users to use the program.