SUMMARY:

• Around 5 years of experience in IT industry including Data Center system administration and data center Network administration experience.
• Several years of experience in a Unix/Linux environment and expertise in several flavors of Linux including Red Hat, CentOS, and Ubuntu.
• Managed more than 100 physical servers, 1000+ virtual servers, VPS for large number of clients along with 500+ co - allocated servers.
• Data center experience with good hands on experience on HP ProLiant DL 380, 385, Dell power edge, 2650, R220, R320, IBMX3650 servers.
• Linux server implementations for data center, Rebuild of Linux (Redhat/Ubuntu) OS when the server is crashed, using the established profile settings.
• Several years of experience on Virtualization, VMware, Proxmox platform supporting large number of clients in installation and maintenance of the same.
• Network admin/designer role in installation, maintenance and troubleshooting experience on high traffic cyberoam, fortigate, Cisco firewall and networks for a government organization called Start-up village for several years.
• Coordinator role between technical marketing team, System development team, Application development team, Also member of production support team.
• Hands-on experience on C-panel Installation and maintenance, LVM and Veritas volume manager etc.
• Client support and end-user support in Linux and network over phone mail and in-house developed ticketing system.
• End-user (train the trainer model) for the hospital information system.-
• Experience in technical presentation of projects for business development.

TECHNICAL SKILLS:

Operating System: RHEL4,RHEL5,RHEL6.CENTOS5,CENTOS6.UBUNTU12,UBUNTU14

Servers: HP ProLiantDL380, 385. IBMX3650. Dell,Poweredge,2650,R220,R320

Routers: Cisco, Huawei.

Switches, Bridges, Hubs: Cisco, Juniper, Dell, HP, Netgear, FortiGate

Firewalls: Cisco, FortiGate, Cyberoam

MultiWAN Router: Pep link

Installation methods: Kickstart, DVD, External Memory Devices

Disk space and File system management: LogicalVolumeManager, Veritas Volume Manager 4.x, 5

Web Servers: Apache HTTP Server 1.3.x, 2.2.xMail Server: Zimbra8

Databases: MySQL (Installation), Phpmyadmin (installation in apache server)

Designing presentation: Microsoft, PowerPoint, Microsoft excel

File Systems: UFS,VxFS,fat32,ext,ext2,ext4

Networking: TCP/IP, NFS, DNS, NIS, Switches, Hubs, firewalls and Routers

Backup: Fwbackups,LVM snapshot.,Bacula.,RsyncPerformance Monitoring of CPU, Memory, Disks, Network monitoring toolsNagios, Top, Vmstat. Tcpdump, Htop. Iostat. Ping monitor

Virtualization: VMware Esxi, Proxmox, Virtual box

PROFESSIONAL EXPERIENCE:

Confidential

Linux System Administrator

Responsibilities:

• Design, build, install and configure Red Hat Enterprise Linux servers ( RHEL5, RHEL6) on bare metal servers of HP ProLiant DL380.
• Installation and configuration of RHEL,CENTOS OS in servers in virtual VM machines (VMware) and proxmox virtual machine.
• Configuring Fortigate firewalls and monitoring firewall logs(to enhance security, Network load balance, Application and user monitoring).
• Managed more than 100 physical servers, 1000+ virtual servers, VPS for large number of clients along with 500+ co-allocated servers.
• User, Group creation monitoring and maintain log for system status/system health using Linux commands and Nagios,Top,Genome system monitor.
• Installed and Configured Redhat Linux Kickstart and booting from SAN/NAS.
• Performed SAN Migration on RHEL servers.
• Installation and configuration of backup clients like Veritas Net Backup on Linux servers.
• Experience in using protocols like NIS, NFS, SSH, SFTP & DNS.
• Installation of Redhat EL 4.x,5 using Kickstart/PXE and SuSe Professional desktop 10x.
• Support of RHEL 6 for the production environment.
• Create and adjust plans as required based on future demand and historical input and forecast resource consumption by application and resource
• Hold regular meetings to review usage as well as create, revise, and report any new measurements required to manage mainframe or distributed environments.
• Provide drill down reporting for application teams to use in monitoring their application resource usage/performance.
• Documenting the procedures and standards for other administrators to follow.
• Discussing with the vendors for new hardware requirements.
• Doing capacity Assessment for new requests of servers i.e. calculating CPU and Memory for new servers according to the current/future Applications running on the system.
• Extensively involved in Backup & Restores.
• Regular updating and patching of packages and software supporting for the production environment.
• SSL cert Installation on Linux machine.
• YUM and aptget package management .
• Load balancing using F5 load balancer.
• Upgrading Linux servers running as VMware vSphere/ESX virtual machines.
• Third party software installation and upgrades, scheduled system health checks, S.A. procedure documentation, New system planning, Customer support, System related problem determination and resolution.
• System Performance, and Tuning
• Performed package installations, maintenance, periodic updates and patch management.
• Creating the Linux file system.
• Installation/Administration of TCP/IP, NIS/NIS+, NFS, DNS, NTP, Auto mounts, Send mail and Print servers as per the client’s requirement.

Environment: Red Hat Enterprise Linux 4.x, 5.x, 6.x, VERITAS Volume Manager, Samba, EMC Power path, DELL PowerEdge 6650, HP Proliant DL 380, 585, 580 Fortigate 100D,200D.

Confidential

Linux System administrator

Responsibilities:

• Worked as L2/L3 operations SA in an organization consisting of 200 physical servers globally, running Redhat Linux operating System.
• Installation of RHEL Linux 5/6 operating systems on HP and dell.
• Installed and Configured Redhat Linux Kickstart and booting from SAN.
• Rebuild of the both Linux (Redhat/SUSE/Ubuntu) OS when the server is crashed using the established profile settings.
• Annual Participation in Disaster Recovery (DR) and power down Activities.
• Experience in troubleshooting samba related issues.
• Performed disk administration using LVM, Linux Volume Manager (LVM), Veritas Volume Manager 4.x/5.x.
• Performance monitoring on Linux servers using iostat, netstat, vmstat, sar, top prstat.
• Installed VMWare ESX4.1 to perform virtualization of RHEL/SUSE/OEL servers.
• Installed and configured DHCP, DNS, NFS.
• Configured iptables on Linux servers.
• Perform ongoing performance tuning, upgrades, and resource optimization as required.
• Measure, monitor and report systems capacity usage; create and adjust plans as required based on future demand and historical input.
• Performed Package administration on Linux using rpm, yum and Satellite server.
• And forecast resource consumption by application and resource.
• Measure, monitor and report systems capacity usage; create and adjust plans as required based on future demand and historical input.
• And forecast resource consumption by application and resource.
• Work with development teams and business areas to plan future capacity requirements and hold regular meetings to review usage as well as create, revise, and report any new measurements required to manage mainframe or distributed environments.
• Provide drill down reporting for application teams to use in monitoring their application resource usage/performance using nagios.
• Documenting the procedures and standards for other administrators to follow.
• Discussing with the vendors for new hardware requirements.
• Doing capacity Assessment for new requests of servers i.e. calculating CPU and Memory for new servers according to the current/future Applications running on the system.
• Extensively involved in Backup & Restores.
• Third party software installation and upgrades, scheduled system health checks, S.A. procedure documentation, New system planning, Customer support, System related problem determination and resolution.
• System Performance, Monitoring and Tuning.
• Performed package installations, maintenance, periodic updates and patch management.
• Creating the Linux file system.
• Installation/Administration of TCP/IP, NIS/NIS+, NFS, DNS, NTP, Auto mounts, Send mail and Print servers as per the client’s requirement.

Environment: Redhat EL 4.x, SuSe 10, IBM x3650,IBM HS22 Blade Center, T2000, T5240, V240,V880/890, BL460c, HP, Cisco Works, VMware ESX3.5, VMware Vsphere ESX4.0.

Confidential

Network/Linux Admin

Responsibilities:

• Aride Ocean is an well-known data-center which provides wide range of Internet Services like Web hosting, Data Center Co - location Services, Dedicated Server, VPS, and Email services etc. Worked as Linux system administrator
• Had primary responsibility for all production systems, including web services, distributed storage, networked file systems, backup, maintenance, accounts, provisioning, and physical infrastructure.
• Installation of Redhat, Ubuntu and SUSE Linux on HP and Dell Rack and Blade.
• Installing, administration and troubleshooting of Apache web server, which included tasks like creating virtual hosts, installing SSL s etc.
• Installation of Linux servers and creation of VMS’s using the web console vCenter on VMWare ESX.
• Managing configuration files like Apache httpd.conf, crontab in the revision control systems.
• Performance monitoring and tuning of the applications and OS using iostat,sar vmstat, prstat commands and nagios.
• Installation of patches on servers running Redhat & SUSE Linux servers.
• User, Group management for all the UNIX servers.
• Firewall administration for fortigate,cyberoam networks.
• Performed tuning of the kernel parameters for the better performance of the operating system and tuning TCP parameters and analyzed performance of resources like CPU, Memory, Disk and swap using native commands like prstat, vmstat, sar, iostat, swap etc.
• Install and configure SSH to enable secure access to the servers.
• Configuring, administering and trouble shooting of NFS, AutoFS (Direct and Indirect Maps), NIS (master, slave and client) and DNS in multi-platform networks.
• Troubleshooting day-to-day server related issues and problems in terms of operating system, applications and network.
• Activities include user administration; startup and shutdown scripts; crontab, file system maintenance, backup scripting and automation using shell scripting for Red Hat Linux systems.
• Configuring SAN/NAS storage.
• Documentation of the procedures of according to the company policy and industry standards.
• Configure RAID mirroring on Linux platform.
• Maintained and monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues
• Installation of VMware ESX3.5.4.x infrastructure on Dell Power Edge Server and administration of VMs
• Annual Participation on power down Activities of server.
• Performed disk administration using LVM, Linux Volume Manager (LVM), and Veritas Volume Manager 4.x/5.x.
• Installed VMWare ESX4.1 to perform virtualization of RHEL servers.
• Performance monitoring on Linux servers using iostat, netstat, vmstat.
• Modifying/ Writing scripts in Bash shell for optimizing day to day administration (basic level).
• Manage logical Volume manager on Red hat Servers.
• Administration/Configuration of Print Servers/Clients in the Network.
• Interaction with vendors for Hardware and software supports.
• Security Implementation in servers using different tools, Configured and maintained Fortinet Cyberoam Firewalls.
• Intensive experience SAN/NAS storage.
• Disk and File system management through Veritas Volume Manager and LVM
• Planned and implemented the migration of equipment and services from one datacenter to the new one.
• Expertise in VMware Virtualization using Vsphere 4.0.

Environment: Redhat 8, 9,Redhat EL 3.x, 4.x,WBig Brother Sun E25K,T2000, v890, v480, 280R, E480, Dell 6800, 2950, 1850, HP DL 380, DL 500,Apache 1.3.4, IIS 6, Postfix 2.2, Sendmail 8.12,Veritas Volume Manager 4.1, 5,