Unix/linux Administrator Resume
Raleigh, NC
SUMMARY:
- Over 10 years of IT experience in System Administration under heterogeneous environment of UNIX (Sun Solaris, IBM AIX, HP - UX), Linux (Redhat & SuSE), Zlinux.
- Experience in installation, configuration, maintenance and troubleshooting Redhat Satellite server.
- Experienced in configuration and supporting VMware vSphere 5 .x .
- Experience in Installing ESXi Hosts and Configuring the Storage and Networking.
- Experience on VMware HA, DRS, VMotion, SVMotion and Fault Tolerance .
- Experience in installation, configuration, maintenance and troubleshooting the Zones/Containers, SMF, GFS and ZFS on Sun Solaris.
- Managed packages using RPM/YUM on Redhat Linux and maintaining patching on Solaris servers
- Experience in Migrating UFS root file system to ZFS root file system using Live Upgrade.
- Experience in Security Hardening in UNIX, Linux and Windows servers.
- Extensive experience in building servers using Jumpstart, Ignite and Kickstart Process.
- Managing the Ignite backups in HP tape drives. Scheduling cronjobs for weekly back up.
- Experience in USER MANAGEMENT by giving sudo access to the users.
- Managed resources for Zones using Solaris 10 Container Technology.
- Experienced in migrating Physical to Virtual servers
- Solaris Live Update Technology associated with an operating system upgrade or maintenance.
- Experience in installation, configuration, file system management of Soft Partitions and RAID volume management through Veritas Volume Manager, Solaris Volume Manager (SVM), Logical Volume Manager 1&2 (HP-UX, Linux), Global File System, OCFS2.
- Experience in implementing High Availability Clusters using Veritas Clustering, HP Service Guard, Redhat Cluster Server.
- Experience in configuring NIS, NIS+, NFS, SMTP, DNS, DHCP, Mail Server, LDOM and Samba Server in a heterogeneous environment.
- Good exposure to Network Storage Solutions like NAS, LDAP and SAN.
- Experience in Linux Printer management using CUPS and SAMBA CLIENT with Windows server.
- 1&2 (HP-UX, Linux), Global File System, OCFS2.
- Experience in upgrading and degrading KERNEL Versions and SAN MULTIPATHING in LINUX.
- Experience in backup and restore operation on multi platforms using Veritas Net backup.
- Good working experience with Redhat Satellite Server for upgrading and patching Linux Servers.
- Good working knowledge in registering different client servers to master Redhat Satellite Server.
- Experience in UNIX and LINUX performance tuning and performance monitoring.
- Experience in troubleshooting OS, Crash recovery and performance tuning activities Skilled at investigating and resolving system problems with minimum time
- Administrative tasks periodically like cleaning of system log files, var files, removing temp files, checking file system, scheduling jobs and creation of user accounts.
- Extensive experience in IPMP (IP Multipathing) in Solaris and Bonding in Linux.
- Experience in Shell/Perl Scripting languages like Bourne shell, Korn shell.
- VMware Infrastructure 3.x Installation & Configuration.
- Planning and Designing VMware VI3 (ESX3.x/ ESXi/ Thin ESX and VMware Virtual Center).
- Experience in installation and configuration of XEN VIRTUALIZATION.
- Strong working knowledge of Switch and Router configuration and customization with VLAN and Inter-switch communication. Installation and configuration of Oracle, DB2 DBA and MySQL on Unix Servers.
- Installation and configuration of Oracle RAC 11g on RedHat cluster nodes.
- Experience of working in Data centers with 24X7 Production and On-Call Environment.
- Technical professional with management skills, excellent business understanding and strong communication skills.
- Able to thrive in a rapid changing environment and quickly learn new technologies with total attention to details.
- Time management and scheduling for all related jobs.
- A Good team player with ability to lead a team by example and motivate them to achieve desired objectives. Willing to take on extra responsibilities to get work done.
TECHNICAL SKILLS:
Operating System: Solaris 10/9/8, IBM AIX (5.1, 5.3), & Red Hat Linux 3/4/5, HP-UX (11.0.11.11, 11.23, 11.31), Windows NT 4.0/2000/2003/ XP.ESXi5,ESXi5.1
Hardware: HP Proliant, DL360 G6, DL360 G7, DL380, DL390, BL460c G7, C6000 and C7000 chassis, Sun Enterprise E 5000/5500/4500/450/420 R/250/6500, Sun Fire 280R/V480/490, 3800/4800/6800, E10K/15k/25k Series server, T Series, M Series Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers, SAN, NAS Storage Box, SAN switch etc.
Storage: SAN, NAS, DAS EMC Storage, HP P4000, P4800 and IBM Storage, HDS
Third Party Tools: Veritas Volume Manager, Logical Volume Manager, RAID, Veritas Cluster, Sun Cluster, Redhat Cluster Service, HP Service Guard, SAR, LVM, FTP, SSL, and XEN virtualization, VMware ESX, Commvault backup service, RAID Technologies.
Web Application Server: Apache, WebSphere, Weblogic, iPlanet 4x/5x.
Languages: Perl Scripting, Unix Shell Scripting, HTML, JAVA.
Network/Naming Services: NIS, NFS, AutoFS, DNS, DHCP, NIS+, LDAP
PROFESSIONAL EXPERIENCE:
Confidential, Raleigh, NC
Unix/Linux Administrator
Responsibilities:
- Installation, Configuration and administration of Redhat, Solaris and Linux on mainframe (Zlinux) operating systems.
- Deploying Linux VMs using Templates.
- Installation, configuration and administration, up gradation of Redhat Satellite and Proxy servers.
- Configuration and administration of TSA (Tivoli System Automation).
- Running jobs and various scripts through HPSA.
- Usage of ROSH commands from Global Shell in HPSA.
- Daily systems administration, resolving systems issues, supporting different groups/apps.
- Performed installation, configuration, upgrades, Package administration and support for Linux systems on client side using Redhat satellite network server.
- Worked on installation, configuration and administration of Redhat Cluster Suite and Oracle RAC.
- Network configuration for host names, netmaks and routes details, NFS, DNS, DHCP, FTP, LDAP and Samba, Apache servers.
- Migration of server’s from Old data center to new data center.
- Multipath configuration on SAN devices/disks on Linux to keep the disks names persistent after reboot
- Performed Memory and Swap management to improve optimization and performance of the servers.
- Experienced in User and Group administration and security issues, sudo permissions.
- Performed upgrades of Packages and Patches in Linux.
- Adding/expanding new storage to existing/new systems using LVM
- Installing, Configuring ESXi Hosts and adding to the Clusters in vCenter.
- Installation and configuration of ESP, Tivoli and Legato agents on servers.
- Installation Packages and patches according to the new release and application requirement.
- Scheduling cron jobs such as for Backup, System Monitoring and removal of unnecessary files.
- VMware installation, configuration and monitored with virtual environments with ESX 5x and VCenter
- Running different scripts for performance, cleaning up old files.
- Configuring and scheduling backups on servers.
- Configuring Ulimit as per the recommended settings of the user and the application.
- Configured and maintained System Security using IPTABLES and TCPWRAPPERS in LINUX
- Troubleshooting network, application and server related issues
- Performed memory and swap management to improve optimization and performance of the servers.
- Writing Shell and Perl Scripting for automation of job
- Providing day-to-day user administration like adding/deleting users and managing user queries.
- Provided on-call support on as need basis.
Unix/Linux Administrator
Responsibilities:
- Providing support for Data centre migration activities.
- Installation, Configuration & Upgrade of Solaris, Redhat and Suse server's.
- Installing, Configuring ESXi Hosts and adding to the Clusters in vCenter.
- Experience with Puppet in an enterprise-wide environment.
- Actively participate in the migrations of V2V, P2P and Lift & ship servers.
- Hands on experience in migrating near zero Applications to the new data centre
- Experience in Installation and activation of applications using command line tools like WSADMIN
- Strong Administrative skills in UNIX Operating System (Solaris, Redhat Linux, IBM AIX), Veritas Volume Manager, TCP/IP,NFS, DNS. NIS, Automounter, RAID, Mail Services, Jumpstart etc
- Troubleshooting and Administering High Availability using RedHat Cluster, VERITAS Cluster server on various business critical database and application production servers
- Administration of RHEL 5, AIX 5.3 & 6.1 and Solaris 8,9,10 which includes installation, configuration, testing on both physical and virtual machines.
- Perform live migrations and consolidate the physical servers to VMware infrastructure virtual machines with shared storage across EMC clarion and EMC symmetrix.
- Work with application team to start applications and resolve any issue.
- Migration and troubleshooting of Veritas Cluster.
- Disk and File system management through Logical Volume Manager including GFS (Global File system)
- Configured resource group in VERITAS Cluster in E2, E3 environment
- Supported moving resource groups from one node to another node and taking online and offline Resource Groups in Redhat and Solaris systems
- Created Volume Groups, Logical volumes on Linux, Solaris and AIX platforms
- Modified UMASK, ULIMIT and Crontab entries on multiple platforms ( LINUX, Solaris and AIX)
- Monitored Linux server for CPU utilization, Memory Utilization and Disk Utilization for performance monitoring
- Configured EMC disk on various platforms ( Linux, Solaris and AIX) configured boot from SAN for the luns from EMC storage arrays
- Involved with SysAdmin activities for EMC SRDF Disaster recovery testing for the databases hosted on Unix systems
- Server remediation activities to qualify the servers for EMCSAN/Storage connectivity
- Configured EMC Clariion and Symmetrix VMAX LUNs on all unix servers
- Installation, configuration and remediation of various Security software
- Installation Packages and patches.
- Writing Shell and Perl Scripting for automation of job.
- Working closely with Oracle DBAs to assign the ASM disks in physical server and in VM servers and monitoring those ASM disks and troubleshooting their IO related issues
- Involved in troubleshooting, performance monitoring, file system maintenance and network monitoring
- Involved in bridge calls with other team leads and developers for resolving the High Priority Issues for High Availability Production Systems and also for deploying EAR files into Production Environments
- Work closely with Project manager, development, testing and production team to align project deliverables, dates and report issues/concerns
- Provided On-call support (24x7), Monitoring and maintaining multiple Applications and Data Base at Development, QA and Production phases
System Administrator
Responsibilities:
- Installation, Configuration and Administration of Solaris, HP-UX, AIX and Redhat Linux Operating System.
- Experience in setup, installation and configuration of NFS and Naming services like NIS, NIS+, DNS and maintaining NFS, DNS (Master/Slave).
- Creating and managing shared disk groups in clustering environment.
- 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.
- Creating the volumes and creating the file systems (UFS, JFS, EXT and VXFS).
- Adding/expanding new storage to existing/new systems using LVM, Veritas Volume management VXVM and Vxfs on Linux/SUN servers.
- Used Veritas Cluster Server (VCS) and Veritas Foundation Suite to provide high availability and storage management. Responded to unplanned system failovers within a production VCS environment.
- Building Linux servers by using VMware ESX 3.0 and also involved in channels and pushing the packages in Redhat Satellite Server.
- Installed and Configured Veritas Net backup client and advanced client software’s in Production servers.
- Configure Linux Redhat Servers with Kickstart, LDAP, DNS and DHCP and connect to network.
- Installed, configured and maintained Redhat Satellite Servers for different applications.
- Involved in large data center migration - planning, designing, moving servers to new data center, coordinating & troubleshooting issues with various data center, network, and application and storage teams.
- Configured System imager for Linux Servers and used it for Cloning, software distribution and OS updates.
- Worked mainly on Solaris servers supporting all the OS administration, application and hardware issues.
- Installation, Configuration and Administration of Web Logic, Websphere and Apache Servers in Linux and Solaris Servers.
- Extensive knowledge of Solaris Zoning Technology.
- Provisioning servers for Oracle & Sybase databases.
- Monitored services such as Disk Space, CPU usage, Memory usage, Temperature of the equipment, HTTP, Mail, SSH etc. using NAGIOS.
- Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using Veritas Cluster Server in SAN environment.
- Experience in setup, installation and configuration of NFS and Naming services like NIS, NIS+, DNS and maintaining NFS, DNS (Master/Slave).
- Creating and managing shared disk groups in clustering environment.
- 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.
- Creating the volumes and creating the file systems (UFS, JFS, EXT and VXFS).
- Implementing RAID 0, 1 and 0+1 levels using Veritas Volume Manager.
- Created RPM packages using RPMBUILD, verifying the new build packages and distributing the package.
- Installation of Veritas Maintenance Patches and Rollout Patches in Production Servers.
- Involved in mass migration of data form old EMC Storage subsystems to new Subsystems.
- Administer, maintain and troubleshoot EMC Clarion arrays.
- Working Knowledge on Tivoli Storage manager.
- Management of SUN High-end server E25k, E15K, and E10K.
- Perform capacity planning on SAN and switch fabric (Brocade).
- Performed zoning at Brocade switch level and LUN masking at server levels
- Creating volumes, LUNs and implementing different RAID levels on the same
- Configured and created snapshots of clones of LUNs using EMC Snap View
- Implemented replication of data within sub storage systems using SAN Copy and Mirror View software
System Administrator
Responsibilities:
- Installation, Configuration & Upgrade of Solaris, AIX, HP-UX, Linux and Windows operating system.
- Configuring NFS, NIS, NIS+, DNS, LDAP, and Auto-mount and disk space management on SUN servers.
- Performed automated installations of Operating System using Jumpstart, Kickstart for Solaris and Linux.
- Installation and configuration of Apache, Websphere.
- Installation and configuration of Veritas Volume Manager, Veritas File System and Configuration and Administration of Veritas Cluster Server.
- Extensive use of volume management tool using Veritas Volume Manager to create disk groups, volumes with RAID architecture and layered volumes.
- Experience with configuring and managing Virtual disks, Disk Mirrors and RAID 0, 1 and 5 levels.
- Used VxVM to add disk, create new disk groups/volumes, resize, deport and import disk groups between servers.
- Extensive experience with working on sun Volume Manager and Logical Volume Manager (HP-UX, AIX, Linux).
- Worked on Solaris 10 container technology, created local and global zones, modified local zone parameters, created file systems on local and global zones.
- Created Zetabyte file system (ZFS) in Solaris 10.
- Managed resources for zones using Solaris 10 container technology.
- Created/used LDOM in Solaris 10 and installed multiple OS.
- Creating metadevices, soft partitions, mirroring the devices and metasets.
- Space allocation to the metadevices, detaching and clearing the devices if not in use.
- Troubleshooting and building high end servers E15K, E25K and midrange servers sunfire 6800.
- Configured new service group and resources for new application in Veritas Cluster Servers.
- Worked on server consolidation and migration.
- Extensively worked in data and database migration from older machine to latest configurations.
- Proactive maintenance on systems by timely upgrading Patches to the systems and Scheduling of batch jobs and Cron jobs.
- Monitor performance and resource utilization of key systems and provide ongoing trend analysis for forecasting future resource requirements
- Supported class monitoring and management tools such as Openview and BMC Control-M.
- Implemented Security Hardening per company policy using Solaris 10 features.
- Involved in disaster recovery testing every quarter.
- Participation in change control activities, Involved in Memory sizing of different applications.
- Complete periodic checks of production and development systems; CPU utilization, memory profiles, disk utilization, network connectivity, system log files, etc.
- Verify successful completion of daily incremental and database backups, following developed procedures.