Linux System Administrator

9 Years of Linux Administration experience

Summary

• Nine Years of experience in System Design and UNIX Administration of Red Hat and SUSE.
• Subject matter expert on Data center migration and transformation projects.
• Experience in building the Linux environment for the DC Migration.
• Experience in handling cross platform migration of mission critical applications like SAP environment.
• Handled cross platform FTP migration project for one of the prestigious media client in UK successfully.
• Implemented Globalscape's EFTP Solution.
• Implemented Kickstart and autoyast on HP Intel platform.
• Good Analytical and troubleshooting skills for OS performance issues.
• Strong experience in file systems, NFS, NIS, DNS, SAMBA, FTP and WEB SERVERS.
• Good exposure to VMware, C7000 Enclosure, HP Blades.
• Experience working with Enterprise SAN server side configuration like scanning the luns at the server side.
• Working Experience of Linux on Multi-Vendor Platforms of HP, IBM, DELL and Intel with both 32 and 64 Bit Architectures.
• Knowledge in deployment of Linux OS on Blade Server of HP, IBM and Intel and also Boot From SAN for SUSE servers.
• Hands on experience on troubleshooting grub and LILO and Good knowledge of Linux Boot Process.
• Experience with Firewall, VPN, DNS BIND , IP Tables, TCP Wrappers installation administration.
• Integrating and deployment of multiple OS by VM Ware.
• Experience on Bash Scripting language.
• Good knowledge on capacity planning with heterogeneous storage systems.
• Expert in implementing and designing the best practices for a business.
• Experience in implementing High Availability and Redundant architectures in a Data Centre
• Analysis and performance up gradation of Linux Systems and its Applications.
• Good knowledge of change control process.
• Good analytical, trouble-shooting, communication and learning skills.

PROFESSIONAL EXPERIENCE:

Confidential

Linux Consultant

Responsibilities:

• Involved in Datacenter migration planning from various locations across globe to specific primary and DR Locations.
• AS Technical SME
• Administration of RHEL 4.x, 5.x which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 5.1 and migrating servers between ESX hosts.
• Installing Red Hat Linux using kicks tart and applying security polices for hardening the server based on the company policies.
• Building the POC environment for the SAP across platform migration.
• 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.
• Tech and non-tech refresh of Linux servers which includes new hardware, OS upgrade, application installation, testing.
• Handled the SW licensing for the Linux environment for the servers which are candidate for the migration.
• SPOC from the Linux team for the new SAP build.
• Requirement gathering from the SAP and Oracle team for the newly build servers.
• Working on Heterogeneous environment including teams from Application, DBA, Storage, Backup, network, server and Vendor to drive issue to a fix.
• Understanding client requirement and providing design support for new deployment and submitting request for server build accordingly, further tuning them as per requirement.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Gathering requirements from customers and business partners and design, implement and provide solutions in building the environment.
• Installing and configuring Apache and supporting them on Linux production servers.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage or RDM Luns.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• Monitored server and application performance tuning via various stat commands vmstat, nfsstat, iostat etc and tuned I/O, memory, etc.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• 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.

Environment:

• Hardware: HP Blades, HP Proliant DL380,580, IBM, Dell
• OS: SUSE 11, Oracle Enterprise Linux 5, 6, Red hat Linux 32/64 bit 6.4
• Virtualization: VMware 5.5
• Cluster: VERITAS Cluster Suite 5.0, Oracle RAC
• Storage: EMC - DMX, VMAX, NetApp, Hitachi, EVA
• Database: Oracle 11g
• Backup: Symantec Net Backup
• Automation: IBM Endpoint Manager, CA, HPSM
• Tools: PowerBroker, Powerkeeper, Nagios, Tripwire.

Confidential

Linux Consultant

• Unix Migration lead for Disney DC migration project, responsible for handling Linux server migration from IBM DC to Disney DC in North Carolina.
• Used Migration approaches like P2P, V2V, P2P using platespin.
• Experience in handling migration using Lift and shift approach.
• Point of contact for the handling escalations for Linux servers issues during migration and responsible to provide hyper care support as well for the migrated servers.
• Configuration of ILO ip's for the blades moved to new DC.

Environment:

• Hardware: HP Blades,Cisco UCS
• OS: SUSE 10, 11, Oracle Enterprise Linux 5, 6, RHEL 5,6
• Virtualization: VMware
• Cluster: Oracle RAC
• Storage: EMC - DMX, EVA
• Database: Oracle 11g
• Backup: Symantec Net Backup
• Automation: IBM Endpoint Manager, CA, HPSM
• Tools: ITLM, Hpopenview

Confidential

Linux Consultant

• Involved in planning to separate the production and non-production servers across two different locations.
• Planning for grouping of servers for multiple moves.
• Separation of data from the production SAN to the swing Storage.
• Blade reshuffling activity prior to the actual move to separate prod and non-prod enclosures.

Environment:

• Hardware: HP Blades, HP Proliant DL380,580, C7000, Sun V440, V240, IBM P series, HP SuperdomeIBM, Rx8640
• OS: SUSE 9,10,11, Solaris 5.8, AIX, HPUX 11.31
• Virtualization: VMware
• Storage: EMC - DMX, Hitachi, EVA
• Database: Oracle 11g

Confidential

Linux Consultant

• As a part to Unix team, I have handled project of FTP services migration from Solaris to EFT Enhanced file transfer that runs on windows platform.
• Worked from requirement gathering till implementation of EFT services before handover of EFTP services to Steady State team.
• Involved in implementing Build and Deployment environment for building SUSE 9, 10 and 11 VM's and physical servers as there was lot of servers to be built during the transformation project.
• Has worked on ILO's of HP blades, installation and configuration of network services of SUSE Linux on physical blades.
• Configuration of network bonding on physical HP Blade servers.
• Worked extensively on VMware as well, exposure to Vsphere client 4.1.
• Worked extensively on LVM, creation of volume groups, logical volumes from the external disk added to the server on VMware level or from the LUNS assigned to the physical blades from storage team.
• Worked on DR activities of the services running on VMware using SRM.
• Interaction with the vendors for the product support as well, like with Novell and Globalscape.
• Extensive communication with Client for their requirement and issues.
• Mainly involved in movement of FTP servers from old to new data center.
• Some of them were moved using lift and shift, some using swing kits and some migrated from physical to virtual i.e using proftpd on Linux on virtual machine.

Environment:

• Hardware: C7000, HP Blades, HP Proliant DL380,580, V240, V440
• OS: SUSE9,10, 11, Red hat Linux 5
• Virtualization: VMware 4.1
• Cluster: VERITAS Cluster Suite 5.0, Oracle RAC
• Storage: Hitachi
• Database: Oracle 11g
• Backup: Symantec Net Backup
• Automation: HPSM, SMT Server for Patching
• Tools: HPSM, Hp Open view

Confidential

Linux Consultant

• Worked on Red hat Linux and Sun Solaris OS in production environment.
• Coordination with client and internal teams for operational issues, project work, following process like change process, problem management process, Access management etc, DR plan, process document, run book etc.
• Managing DNS, FTP, Send mail, NIS, HTTP, Account management, Samba, NFS, Auto mount, VNC, Disk management, NTP,Samba, NFS cron, package update, data
• replication through rsync, OS installation and taking its image etc.
• Coordination with vendors like Red hat, HP, Sungard etc and taking proper follow up.
• Using DRAC, DELL Remote console to manage server
• Handling server down issues and analyzing the root cause for the issue by checking system logs.

Environment:

• Hardware: HP Blades, HP Proliant DL380, Sun V240
• OS: RHEL, HPUX11.31, Solaris
• Virtualization: VMware
• Cluster: VERITAS Cluster Suite
• Storage: NetApp
• Backup: Symantec Net Backup
• Tools: Remedy, DRAC, ILO, Lotus Notes, Sympa , Remedy, HP Openview, Cacti.

Confidential

Software Engineer

• 24x7 Monitoring and maintaining the Systems at Data Center with accuracy of 99.999 using Nagios, Cacti and RTM tools
• Forwards / Escalates faults not been able to correct in a predefined time according to the agreed fault management procedures.
• Reports own actions and notifications on the agreed way to NOC Manager and shift leader
• Installation Troubleshooting Red Hat Linux using Network share.
• Users, Groups management and permissions management.
• Handling File system related issues, Mounting file systems, Network share FS, Auto mounting.
• Monitoring performance of servers i.e. CPU utilization, Memory usage, HDD free space.

Confidential

Trainee Engineer

• Main responsibility was to provide technical support to the customers using HP/Compaq laptops and desktops over the phone.