Manager System

Name : Hemendra Singh ****************@*****.***

DEVOPS ENGINEER 469-***-****

PROFESSIONAL SUMMARY

7+ years of experience specialized in System Administration working on Red Hat Linux, Solaris, SuSE Linux, AIX, CentOS, Fedora, OEL, Windows environments, and VMware vSphere.

Overall 7+ years of experience as Linux system administrator who is Motivated, enthusiastic, and pro-active with an excellent 'can-do' attitude and ‘go-to’ personal.

Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Red Hat Linux.

Experience using cloud providers and API’s for Amazon (AWS) with CloudSigma(EU).

Experience in Installing, upgrading and configuring Red Hat Linux 4.x, 5.x, and 6.x using Kickstart Servers

Experienced in implementing and maintaining an Apache Tomcat /MySQL/PHP, LDAP, LAMP web service environment.

Working experience in building and support using Git and Integration tools like Jenkins.

Installation and upgradation of Packages and Patches configuration mgmt, version control, service pack. & reviewing connectivity issue regarding security problem.

Experience on Web servers such as iPlanet Web server 6.0 /Sun one web server 6.3, 6.5, Tomcat 3.x, 4.x, 5.x, 6.x, and 7.x & Apache Server 1.x, 2.x and integrating them with Web logic 10.x servers.

Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, send mail, FTP, remote access, security management and Security trouble shooting skills.

Experienced in implementing Splunk, Puppet, and Chef.

Worked on Data-Center operation and migration across UNIX and Linux platforms.

Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment.

Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris Volume Manager.

Experience in Server monitoring, capacity planning, application monitoring with the help of Nagios, Cacti, Zabbix, Puppet, Splunk.

Experienced on Red Hat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.

Participated, documented, managed ITIL controls and supported Linux environment.

Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.

Experience in writing Shell scripts to automate the administrative tasks and management using cron..

Good understanding of OSI Model, TCP/IP protocol suite (IP, ARP, TCP, UDP, SMTP, FTP, and TFTP)

Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.

Accessed ARM based SoC hardware design for software design and test.

Installation and configuration of JBoss, Web Sphere 5.1/6.0 Application Server on Solaris and Linux boxes.

TECHNICAL SKILLS

Operating Systems

RHEL 3/4/5,6, Solaris Release 2.10/2.9/2.8/2.7, IBM-AIX 5.X, zVM Windows 2003, 2008, 2012 and NT

Hardware

HP Proliant, Blade servers, Sun Servers E450, E3500, E4500, E5000, E6500, E10k, E15k, E25k, Sun Ultra's, V210, V280, V490, V880, V6800 SUN Ray (1g Ultra Thin Client) SUN Desktops (SPARC 10, 5), DMX3 and DMX4 Storage Arrays, F5

Software

Veritas Volume Manager 3.5/4/5, Veritas File System, Veritas Cluster Server 3.5, Veritas Netbackup 6.0, MS-Office/MS-Project

Web/ Application Server

Tomcat, Apache DB2, Oracle

Network Protocols

DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP, and tcpdump, FTP, TFTP.

Cluster Environment

Sun Cluster Servers 2.2, 3.1, 3.2 and VERITAS Cluster Servers 4.1

Programming Languages

C, SQL, HTML, PHP, XML, Bash, Perl and Shell Programming, JSP, Python and Ruby

Other tools

VMware VSphere, ESX/ESXi, VCenter Server, Datacenter Puppet, Splunk, Chef, Nagios, Git and Jenkins.

EDUCATIONAL BACKGROUND:

Bachelor of Technology - Computer Science, India.

PROFESSIONAL EXPEREINCE

Lolly Wolly Doodle, Lexington, NC May 2014 - Present

Sr. Linux Administrator / DevOps Engineer

Responsibilities:

Building and supporting environments consisting Testing, Contingency, Production and Disaster Recovery servers.

Implemented Puppet, Splunk, and Chef tools.

Installed and integrated various plugins in Jenkins for continuous integration of the code from repository.

Involved in maintaining the repository in the distributed environment using Git.

Performed OS provisioning using kickstart through BMC Blade Logic.

Performed patching of RHEL using yum, up2date and BladeLogic.

Supporting infrastructure environment comprising of RHEL and Solaris.

Experience with VMware Virtualization using ESX hypervisor of VSphere.

Installation, Configuration and up gradation of Red Hat Linux 4, 5.X, and using Blade Logic.

Resolving different Users request.

Create, extend, reduce and administration of Logical Volume Manager (LVM) in RHEL environment.

Creation, Installation and administration of Red Hat Virtual machines in VMware Environment.

Creation of SAN File System on Red Hat Linux using multipath configuration.

Rebuilding of kernel in RHEL using mkinitrd.

Worked on projects like PCI, SR to ensure all goes well and provided support till servers go in to production environment.

Configuration of Monitoring tools in Linux and Solaris servers.

Configuration of Network bonding which include Active/Standby and Active/Active.

Installation of HBA cards ( Emulex and Qlogic )

Troubleshooting Network, memory, CPU, swap and File system issues, TCP/IP, NFS, DNS, SMTP in Linux and Solaris servers.

Performance tuning of Virtual Memory, CPU, system usage in Linux and Solaris servers.

Supported class monitoring and management tools such as Open NMS, Tivoli and VCO.

Performance Monitoring and Performance Tuning using Top, prstat, SAR, vmstat, ps, iostat.

Building of Oracle RAC (Oracle Real Application Clusters) environment.

Performed Disaster Recovery in RHEL servers which consists of LVM based FS and Red Hat Clustering.

Installation, configuration and administration of Jboss, Apache, Weblogic, Tomcat and Websphere.

Creation, initialization, addition of Oracle ASM and FSR devices in multipath environment

Creation of Jumpstart and Kickstart configuration for the automatic provision of servers using Bladelogic.

Installation of third party tools using packages.

Environment: Red Hat Linux 5.X, HP & Dell Servers, Oracle/DB2, VMWare ESX 4.x, Autosys, VMware VSphere, ESX, BMC BladeLogic, Weblogic, Jboss, Websphere, Chef, Puppet, Jenkins, Nagios, Splunk and Solaris, Open NMS, Oracle ASM.

Fast Pay, Beverly Hills, CA Oct 2012 - Apr 2014

Linux Admin / (Chef & puppet) Developer.

Responsibilities:

Worked with Symantec and BSC team to setup the Symantec O3 IDLINK Open VPN Servers.

Implemented Bash, Perl, Python scripting.

Implemented automations tools Chef, Puppet, Splunk.

Migrated to Red hat satellite server 6 version.

Worked exclusively on VMware virtual environment.

Experience in using VMware vMotion to move VM’s from One Datacenter to another datacenter.

Implementing and Updating packages and patches using RPM and YUM in RedHat Linux Servers.

Worked on Git for source code management and distributed version control for redundancy and replication.

Build servers using Kick Start, Red Hat Satellite Server, and VSphere Client.

Worked on variety of Linux platforms Red Hat Linux, Solaris which includes installation, configuring and maintenance of applications on this environment.

Involved in installation and configuration of various Third party software onto servers.

Installed and configured various plugins in Jenkins for continuous integration of the code.

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.

Worked with 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.

Worked on Nagios for automated monitoring.

Troubleshooting network administration, IIS configuration, DNS setup and modifications, firewall rule sets, local and distributed director, connectivity, and supporting applications.

Involved in ILMT Agent Deployments and Oracle/SQL Upgrade project which includes various UNIX builds of different OS platforms across various data centers.

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 with clients to ensure resolution of all issues.

Provide support to Account Managers, UNIX and Windows technicians, and other departments.

Used Logical Volume Manager for the management of volumes including creation of physical and logical volumes on Linux.

Coordinated with various cross functional teams across IT operations to make sure smooth functioning of projects.

Worked on projects like PCI, SR to ensure all goes well and provided support till servers go in to production environment.

Worked closely with 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.

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 2012, Windows 2008, IIS 7.0 & 7.5, Chef, Nagios, Solaris, JBoss 4.2.x, 5.x, Sun JES Web Server 6.1, Oracle 10g, Sybase 12.5.

Tele World Solutions, Chantilly, VA Nov 2011 – Sep 2012

Sr. Linux Administrator / Script Developer

Responsibilities:

Worked Primarily on RHEL 4/5, HPUX, and Solaris Operating Systems.

Text processing, also in network programming with Perl Scripting.

Involved in migration activities using Red Hat LVM, Solaris LVM, Veritas and EMC Open Migrator.

Writing Shell and Perl Scripting for automation of job.

Involved in 24X7 Production support, Build and Migration Assignments.

Tuning the kernel parameters based on the application/database requirement

Installation of OAS (Oracle Application Server) on Solaris 9 and its configuration with oracle database.

Used Veritas File system (VxFS) and Veritas Volume Manager (VxVM) to configure RAID 1 and RAID 5 Storage Systems on Sun Solaris.

File system tuning, growing, and shrinking with Veritas File system 3.5/4.x.

Manage user accounts for the team access for Red Hat Satellite Server.

Build channels and pull the packages from master Red Hat Satellite Server.

Troubleshooting hardware, software and configuration problems for various protocols and topologies.

Installed and configured GFS cluster for holding databases.

Configured open LDAP Red Hat Linux systems.

Setup optimal RAID levels (fault tolerance) for protected data storage in NAS environments.

Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP IMAP and POP3) and file servers.

Expertise in troubleshooting the systems and managing LDAP, DNS, DHCP and NIS.

Worked with different Active directory databases like Microsoft AD, Tivoli Directory server with LDAP.

Worked on making DNS entries to establish connection from server to DB2 database.

Performed patching, backups on multiple environments of Solaris, Linux and VMware.

Created new slices, mounted new file systems and uncounted file systems.

Assisted other UNIX administrators when help was needed (i.e. creating UNIX accounts, writing scripts to perform system administrator functions, responding to trouble tickets, etc).

Involved in preparation of functional and system specifications. Estimated storage requirements for applications.

Environment: Red Hat Linux (RHEL 3/4/5), Solaris, Logical Volume Manager, Sun & Veritas Cluster Server, Global File System, Red Hat Cluster Servers, OAS (Oracle Application Server), Veritas Volume Manager (VxVM).

Next Step Living, Boston, MA Oct 2010 – Oct 2011

LINUX System Admin

Responsibilities:

Maintaining and Troubleshooting of FTP Server, Samba Server of the client

Handling the day-to-day Operations, Install software, apply patches, manage file systems, monitoring performance and troubleshoot alerts.

Maintain 99.98% uptime of LINUX production servers and follow proper escalation.

Responsible to solve technical Problems related System administration (Linux of Our Clients).

Managing Red Hat Cluster, HPC environment etc.

Building & configuring Red Hat Linux systems over the network, implementing automated tasks through crontab, resolving tickets according to the priority basis.

Handling LVM related tasks, Creating, resizing LVM, Veritas Volume manager and also managing Cluster environment using Veritas Cluster suite.

Handling the day-to-day Operations, Troubleshooting & Solve Server Problems in LINUX.

Installing and configuring Red Hat Linux locally or over the network-kickstart.

Experience in building binaries using Maven & Xcode.

Maintaining Server and Systems, provide IT support to User.

User Administration (setup and maintaining accounts).

Monitoring system performance, Server load and bandwidth issues.

Work with DBAs on installation of DB, restoration and performance tuning.

Updating Systems, Servers and client software's.

Implement the policies for the users of the computer system and network.

Regularly manage backup process for Server and Client data.

Installing open source application, search, analyze and develop new application for users.

Environment: Centos 5.7/6, Red Hat Linux 5.7/6, Ubuntu 10.04/10.10/11.10, Fedora 17, Red Hat Linux systems, HPC environment, Maven.

HDFC BANK, Hyderabad, Andhra Pradesh Jul 2008 – Sep 2010

Linux Admin

Responsibilities:

Installation of patches and packages using RPM and YUM in Red Hat Linux.

Created and modified application related objects, created Profiles, users, roles and maintained system security.

Responsible for setting up cron jobs scripts on production servers.

Installed and configured SAMBA server for Windows and Linux connectivity.

Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.

Responsible for writing/modifying scripts using sh, ksh, and bash for day-to-day administration.

Modified Kernel parameters to improve the server performance in Linux.

Creation of Logical volumes Manager (LVM) for Linux operating systems.

Installed and configured Apache Tomcat web server.

Involved in design, configuration, installation, implementation, management, maintain and support for the Corporate Linux servers RHEL 4x, 5.x, SLES 9, CENTOS 5.x.

Coordinating with 24 x 7 on-call support personnel in debugging.

Maintained proper documentation of all the activities carried out during the project

Worked with DBA team for database performance issues, network related issues on Linux Servers.

Maintained proper documentation of all the activities carried out during the project.

Created and modified users and groups with SUDO permission.

Installed and configured VNC server/client.

Coordinating users for any server activities which may involve major changes on software or any hardware related issues.

Environment: Red Hat Linux (RHEL 4/5), Logical Volume Manager, Global File System, Red Hat Cluster Servers, Oracle, MySQL, DNS, NIS, NFS, Apache, Tomcat, Samba, VNC.

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