SUMMARY

• Having 9 years of experience as System Engineer on RHEL 4.x, 5.x, 6.x,7.0, AIX 6.x, 7.x, Debian, CentOS4.x, 5.x, 6.x, Suse 9 & 10, Oracle Enterprise Linux 5 & 6, Solaris 8,9, 10, Windows 2003, 2008 R2, 2012, and VMware vSphere ESX/ESXi 4.x, 5.x environment.
• Hands on Experience in Redhat Enterprise Linux and Kickstart - PXE installation.
• Extensive experience with Virtualization technologies like installing, configuring, administering
• Well experienced in Installation, administration, patches, up-gradation, configuration, security issues, performance tuning and troubleshooting of Red Hat Linux 4/5/6, Sun Solaris 8/9/10 IBM AIX 5/6, SuSe EL and Window.
• Proficient in Installation, configuration, maintenance of open LDAP server and application integrated with apache/tomcat, samba & sendmail, web sphere application servers and postfix mail server for user authentication.
• Experience with server/kernel performance tuning, system security, system monitoring and system network interface load balancing.
• Strong expertise in the fields of Devops, Build and Release Engineer, Linux system administration and Software configuration management, using various automation tools to oversee the end to end deployment process.
• Experience with Configuration Management, Build, Deploy, Release Management and Quality Assurance.
• Expertise in creating Devops strategy in a mix environment of Linux (RHEL, CENTOS) servers along with Amazon Web Services.
• Experience in using configuration management tools like Puppet/Ansible/ Chef and knowledge on SaltStack.
• Good Working knowledge of Build scripts & automated solutions using various scripting languages like Shell, Python, Ruby, Yaml.
• Knowledge on protocols like HTTP, DHCP, DNS and SSL/TLS and firewalls like iptables.
• Used and build Red Hat Clusters, Sun Clusters, VERITAS Clusters for high availability and Load balancing.
• Worked on administering NFS, DNS, DHCP, Mail servers, VERITAS Volume Manager, RAID, VERITAS Netbackup, Tivoli Identity Manager, Tivoli Storage Manager, Tivoli Storage Manager and Shell/Perl Scripting in heterogeneous UNIX environments.
• Expertise in system monitoring and software installation tools including Nagios, RPM, yum, apt-get..
• Expert in Kickstart, Jumpstart, and Ignite Installation Methods.
• Provide recommendations for new Linux server deployments in a datacenter environment.
• Setup Internet load balancing on Multiple ISP, Firewall, Port forwarding, IP routing using IPTABLES.
• Experienced in supporting database systems including Oracle, MySQL onLinux/Unix, and Windows environment.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring on Redhat Linux.
• Installation and configuration of Web Application servers like Apache, Tomcat and Weblogic.
• Experience in configuring Oracle ASM disks and supporting Oracle RAC (Real Application Cluster) Database.
• Working knowledge on Automatic Storage Management (ASM), AWS and experience in Shell scripting (Ksh/Csh/bash/Sed/Awk), Python, Ruby, Java and Perl scripting.
• Experience with configuration management and automation software such as Puppet, Chef and Ansible.
• Managed Patches, Upgrades and Licensed Products for System software on all Linux Servers.
• Experience in iSCSI, NFS storage and RAID concept.
• Experience working with Cisco Nexus 2148 Fabric Extender and Nexus 5000 series to provide a Flexible Access Solution for a datacenter access architecture.
• Experiences in FTP, DHCP, SAMBA, users setup/troubleshooting.
• Experience managing various file system using LVM configured file system through network using NFS, NAS methodologies and installed RAID devices.
• Experience in Server monitoring, application monitoring with the help of HP insight, Nagios, Zabbix.
• Experienced in creating, mounting file systems and recovering file system errors.
• Good knowledge of installation and update of drivers for HBAs to provide connection between servers & clients.
• Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup.
• Advance Scripting skills in Bash Shell.
• Working Knowledge on using and developing Perl and python scripts used to automate day-to-day administrative tasks.
• Experience on Installation of VMware ESX, ESXI migration of vm's from one host to another host and also from one data storage to another data storage, Patch management.
• Strong experience with the VMware HA (High Availability), Distributed Resource Scheduler (DRS), vcloud, and VMware Distributed Power Management (DPM), VMwareData recovery and Site Recovery Manager along with configuration of Fault Tolerance (FT) for business critical servers.
• Configured, deployed and actively involved in troubleshooting of VMs, ESX/ESXi servers, vCenter server, and vSphere as well as Monitoring and managing performance of vSphere, ESXi servers and Virtual Machines.
• Extensive experience in VMs O/S installation, setting up VM priorities, Cloning, Creating Templates and Snapshots.
• Proficient in Configuring of DNS, DHCP and Active Directory Services in Windows based server environments
• Configured scheduled tasks, alarms and alerts, CPU, Memory and Network Disk monitoring in vCenter.
• Experience in with Virtualization technologies like installing, configuring, VMware vSphere. Creation, management, administration and maintenance of virtual servers and clients.
• Extensive knowledge in advance features like VMOTION, SVMOTION, HA and DRS.
• Experience inP2V, V2V MIGRATION using VMware Converter / Plate Spin. Creating host and client VM templates and cloning.
• Experience supporting 24x7 production computing environments, providing on-call and weekend support.

TECHNICAL SKILLS

Operating Systems: Redhat4/5/6, AIX, VMware 4/5, Solaris 8/ 9/10, Windows 2003, 2008 R2, 2012.

Hardware: HP ProLiant, Cisco UCS, Dell Power edge, IBM x series, Sun sparc

Languages: C, C++, FORTRAN and Pascal

Database: Oracle 9i, 10g, 11g DB2, MS Access, MYSQL 3.X

Web Applications: HTML, PHP

Scripting: Perl Scripting, Shell Scripting, chef, puppet, ansible on Linux and solaris

Networking: TCP/IP, NFS, FTP, DNS, DHCP, if config, route, HTTP, SAMBA

Web/APP Servers: Apache Web Server, Tomcat Web Server, Websphere

Tools: VMWare, IBM-RSA

PROFESSIONAL EXPERIENCE:

Linux/VMware/Devops System Engineer

Responsibilities:

• Worked on Red Hat Satellite Server, channel configuration, configuration file deployment and managing kick start profile as per the need.
• Monitored and administered Servers for day-to-day problems, patches, user administration, hardware failure, monitoring log files, backup, software patching, configuration changes and documentation.
• Installed, upgraded, patched and configured Linux servers using Jumpstart and Redhat Enterprise Linux 5/6 using Kickstart.
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Redhat Cluster Server.
• Experience in establishing NIC bonding/ teaming, IP aliasing.
• Installed, monitored and supported Web servers and Application Servers on Solaris and Linux environments.
• Administer the Network issues and Resolving Operating Systems related issues of AIX, Linux and making sure that the users get the proper environment for testing.
• Fine tuning of Operating System and performance analysis, uptime and response time and SLA. Performed UNIX System Administration. Fine-tuning, Kernel debugging, process scheduling, disk and file system
• I/O, kernel internals, TCP/IP communications.
• Automating the installs using Jumpstart and Kickstart and building post install scripts using Shell scripting in SUN Solaris and RHEL Servers.
• Developed ChefRecipes to configure, deploy and maintain software components of the existing infrastructure.
• Using chef wrote, cookbooks like TOMCAT for an application to automate and make virtual machine servers with the single click we made possible to make server spin off in less time.
• Used Chef to automate Configuration management & Applications.
• Used Chef to manage Web Applications, Config Files, Data Base, Commands, Users Mount Points, and Packages.
• Automated the cloud deployments using Chef and AWS cloud formation templates
• Experience in setting up the Chef Workstation, Chef Repo as well as Chef nodes.
• Implemented the Chef Software setup and configuration on VM's from the scratch and deployed the run-list into chef-server and bootstrap the chef clients remotely.
• Used existing cookbooks from Chef Marketplace and customizing the recipes with respect to each VM.
• Strong experience in setting up the entire Chef Infrastructure from scratch.
• Worked extensively with Vendors Sun, NetApp, and HP for troubleshooting the issues and in replacing the failed Hardware.
• Administered, created projects, users and taken care of access controls in Github.
• Monitoring of network services (SMTP, POP3, HTTP, NNTP, ICMP, SNMP, FTP, SSH) using Nagios.
• Troubleshooting and resolving issues in JIRA and Confluence as users.
• Provided documentation of customer JIRA terms, standard practices, and implementation and weekly status reports.
• Using Docker container enabled rapid deployment with minimum run-time requirements.
• Implemented RAID techniques and the creation of Disk groups and volumes using Veritas Volume Manager
• Writing shell scripts to automate various tasks.
• Worked and tested on critical production environment with permanent corruption and made plans for future disasters with documentation.
• User Administration by creating, maintaining User’s accounts and groups, setting up User environments.
• Maintaining file systems: Checking and repairing file systems and monitoring file system usage Networking - NFS, Telnet, FTP, ifconfig.
• Configuring and administrating of Swap space.
• Designed and documented the migration of servers to include applications and databases.
• Monitoring server activity logs, database and log usage, growth and volume status, disk storage pool volumes and tape scratch pool count.
• Created sudo access to users on Linux and Solaris servers.
• Updating YUM Repository and Redhat Package Manager (RPM).
• Installed and configured services like DHCP, NFS, DNS, Apache Web Server, NIS, LDAP, FTP/SFTP, SMTP, Telnet, RPM Package Management, File System Management.
• Duties included Installation, configuration, administration, troubleshooting and maintenance of VMware virtual infrastructure platforms
• Managed VMware infrastructure with Virtual Center Server and migration of virtual machines to ESXi 5.5
• Worked on Implementing, upgrading and maintaining the Cisco UCS domains, vcloud.
• Created and maintained VMware host clusters for High Availability (HA), Distributed Resource Scheduling (DRS) and Distributed Power Management (DPM).
• Configuring additional resources for VM’s and performing VM tools upgrade.
• Provisioning and Decommissioning VM’s based on the business requirements.
• Worked on installation of ESX Servers, vSphere Client and VCenter Server.
• Participating in Technical calls and Troubleshooting issues on outage for Service restoration.
• Installed and Configured the Yum repository across the multiple datacenters.
• Maintain Apache web server, FTP server and DNS servers.
• Configured Affinity, Anti-Affinity rules for Virtual Machines in the Cluster including configuration and troubleshooting of vMotion and Storage vMotion issues.
• Involved in the installation and configuration of VMware Syslog Collector for ESXi servers for centralized log management
• Installed & configured Guest operating system like Redhat on Vmware ESX 5.x.
• Involved with the deployment teams in trouble shooting and fixing day-to-day problems of the applications in production on 24/7 schedule.

Environment: Chef, Puppet, Jenkins, RHEL 5.x/6.x, VMware ESX 5.0, 5.1, 5.5, 6.0, Tomcat,Apache 2.2.x, SuSE EL 9/10, WebLogic 10/11g, WebLogic 8.x/9.x, Sun, HP, Cisco UCS,, Veritas Storage Foundation 5, Veritas Cluster Server 5.1, VMware 5.x, 6.0, vcenter, solarwinds, level 3 support, patching Confidential, Union, New Jersey

Sr. Systems Administrator(Linux/AIX/UNIX, VMWare)

Responsibilities:

• Experienced as Red Hat Enterprise Linux administrator.
• Building, Installing, Configuring servers from scratch with OS of RedHat Linux.
• Performed Red Hat Linux Kickstart installations on RedHat 4.x/5.x/6.x, performed Red Hat Linux Kernel Tuning, memory upgrades.
• Working with Logical Volume Manager and creating of volume groups/logical performed Red Hat Linux Kernel Tuning.
• Worked in the migration team for migration from AIX p5 to p6 & p7.
• Troubleshooting the POWER HA and increasing the file system in HACMP/POWER HA cluster.
• Hardware replacement of cluster nodes without any downtime.
• Configured IBM P-series 770, 750, 595, 570,550 and RS/6000 machines for production and test environments.
• Blade server’s Virtualization-Manage, build and configure the VIOS and LPAR’s on Blade servers and p-series.
• Creation and installation of new VIOS and LPAR’s using HMC.
• Written multiple cookbooks in Chef using Ruby scripting language.
• Rolled out Chef to all servers, and used the chef node database to drive host configuration, DNS zones, monitoring.
• Storage Provisioning, Volume and Filesystem Management using LVM, Veritas Volume Manager and Veritas Filesystem (Veritas Storage Foundation), Configuring ZFS file systems.
• System Data and Process Architect for Service-Now Deployment.
• 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.
• Setting up JBoss cluster and configuring apache with Jboss on Ret Hat Linux. Proxy serving with Apache.
• Troubleshooting Apache with JBoss and Mod jk troubleshooting for the clients.
• Installation and configuration of Apache Webserver in a LAMP stack.
• Monitoring connections and load of Apache server using mod status.
• Troubleshoot customer applications issue.
• Configuring DNS, DHCP, NIS, NFS and other Network Services in IBM Power Series.
• Troubleshoot OS issue using system message logs.
• Install packages using RPM.
• Created KSH/Bash scripts to monitor processes and making sure process startup when operating system restarts using chkconfig and RC startup levels.
• Manage user/group and sudo access on the Linux operating system.
• Setup logrotate for applications logs and system logs.
• Address and Network Management (network and sub-netting address)
• Support LANs, WANs, network segments, Internet, and intranet systems.
• Setting up the lab environment with Tomcat/Apache, configuring the setup with F5 virtual load balancer for customer application.
• Responsible for maintaining around 65 VMware ESXi 5 Hosts & 700+ guest virtual machines (VMs) in Data Center
• Installed and configured vCenter Servers and also configured Clusters and resource pools for CaaS (Computing as a Service), vcloud.
• Configured Clusters for the ESXi hosts and created Affinity/Anti-Affinity rules in the DRS to either keep the VMs together or separate them on ESXi hosts.
• Duties included monitoring and managing performance of ESXi servers and VMs using Virtual center server for HA, DRS, installing and configuring Cisco UCS Manager.
• Involved in live migration of VMs and data files using the vMotion and Storage vMotion
• Took active part in troubleshooting vCenter and ESXi issues and also in system hardware failures
• Maintained user access in VMware virtual Center, and configured mail alerts for any failure in HA, DRS, CPU and memory.
• Worked on troubleshooting the triggered alarms generated from VMwarevCenter Server and solved the SNMP traps
• Used Hot Plug feature for increasing the performances of virtual machine .

Environment: Red Hat Linux 4/5/6, VMware 4/5, Solaris 8/9, Sun Enterprise Servers, SUN FIRE 6800/E6500/E4500, IBM RS/6000, Disk Suite, Veritas Volume Manager 4.0, LDAP, DNS, NIS, SNMP, Shell scripting, SENDMAIL, Apache, WebSphere, Sun and Veritas Clusters.

Unix/Linux/VMware System Administrator

Responsibilities:

• Installation, Configuration and upgrade of Redhat Linux (3,4,5), Cent OS, SUSE, AIX, HP-UX & Windows 2000 / 2003/2008 R2 Operating System.
• User Administration, management and archiving.
• Experience in Configuring and Managing Virtual Disks, Disk Mirrors & RAID Levels.
• Experience with VMware Virtualization using ESX hypervisor of Vsphere 4.0.
• Installation, Configuration and Maintenance of Samba, Apache Tomcat and Web Sphere in AIX, and Linux environment.
• Experience in Active directory configurations and support.
• Installed Iplanet web server on Linux and Solaris boxes.
• Implemented and administered VMware ESX 3.5, 4.x for running the Windows, Redhat Linux Servers on development and test servers.
• Administration and troubleshoot skills on Disks & File Systems for Linux systems.
• Written various Linux shell scripts for example- apps init scripts, periodic backup scripts of Perforce depot, xterm tittle pointing to host alias names while login in.
• Installation/Administration of TCP/IP, NIS/NIS+, NFS, DNS, NTP, Auto mounts, Send mail and Print servers as per the client’s requirement.
• Expertise in Performance Monitoring and Performance Tuning.
• Expertise in creating and managing Logical Volume Manager in AIX, HP-UX and Redhat Linux.
• Experience in building Production Servers and validation for new build releases.
• Security, users and groups administration.
• Disk and file system management through Veritas Volume Manager / Veritas File System.
• Troubleshooting vSphere ESX/ESXi, ESXi Clusters, Host Profiles, vDistributed Switches, HA, DRS, vMotion, Storage vMotion, Fault Tolerance, Resource pools, vCenter Permissions, Snapshots, Templates, snapshots, Disaster Recovery (DR) and High Availability (HA) using PowerCLI and Remote CLI
• Installed and Configured WIN, TCP/IP, DNS, DHCP, IIS and Terminal Services.
• Configured and maintained new VM’s and Installed Microsoft Windows 2008 R2/2003 Servers, managing VM’s.
• Experience in setting a cluster environment for load balancing and HA
• Networking setup with the port group and VLAN trunking on the ESXi server and Physical switches
• Resolve tickets and provide root cause analysis to management.

Environment: Redhat (4,5), Cent OS and SUSE Linux, Solaris 8 / 9, Cisco Nekus 5k, 7k, MDS, Firewalls. Sun Enterprise Server, HP 9000 K, L, IBM RS/6000, p Series Server, Net Backup 5.0, Veritas Volume Manager 4.x, EMC DMC 2000/ 3000, Windows NT 2003/2000/ XP,

Linux/VMwareSystem Administrator

Responsibilities:

• Build and support cluster infrastructure (Sun Cluster 3.x, Veritas cluster, Linux RAC cluster
• Provided Administrative support for about 225 Solaris/Linux servers running Web logic, Web sphere Suites, Apache Web Server and Multimedia Messaging applications.
• Installation, Configuration and Maintenance of Redhat Operating System with Veritas Volume Manager and Veritas Cluster Server.
• Trouble shooting the OS related Issues.
• Created new file systems whenever required.
• Installed and configured JUMP START Server.
• Performed tasks such as User, group management, adding, removing disks and creating file systems as requested on UNIX/WINDOWS Servers.
• Extensive working experience in process scheduling, disk and file system I/O, kernel tuning, TCP/IP networking.
• Installing Veritas Volume Manager and configuring Disk Groups, Volume Groups and Logical volumes to manage the storage resources.
• Installing ESXi on Cisco UCS blades and C200 racks, using scripted installations, configuring and hardening ESXi servers
• Responsible for handling the vCenter operations like HA, DRS, vMotion, Storage vMotion, VM templates and maintaining the resource pools.
• Upgraded the ESXi/ESX Hosts, vCenter, VMs using Update Manager.
• Involved in storage migrations and replications on EMC storage arrays
• Responsible for full automation, migration and failover with vCenter site recovery manager 4
• Troubleshooting Windows 2003/2008 and ESX/ESXi Servers.
• Involved in planning and implementation of NAS backup for servers.
• Day to Day activities included handling security issues like stale UNIX account cleanups, 90 day password changes, setting max age and min age, creating a list of umask permission for various users.
• Involvement with the Deployment teams in trouble shooting and fixing day-to-day problems of the applications in production on 24 x 7 schedules.
• Configured and maintained FTP, DNS, NFS and DHCP servers.
• Ensured the data redundancy with RAID implementation.
• Responsible for the configuration of DHCP server and Samba server.
• Installed and configured several hundred Red Hat Blade and VMware Esxi Virtual Environment.
• Configured Red Hat Cluster Nodes for any legacy applications and verified the daily health check on the Cluster Nodes.
• Assisted in physically installing, racking and cabling new BM Blade Centre S and Cisco UCS 5108 Chassis environment.
• Installing and configuring Red Hat Enterprise Linux 5, 6 using kick start servers and virtual servers.
• Responsible for installation, Configuration and administration of Oracle10g/11g database on SCO Unix, Linux and Windows 2003 Servers and also an integral part of the backup and recovery.
• Installing and updating packages using YUM (custom YUM servers/repositories) and Red Hat Satellite Server.
• Responsible for DNS server management, user disk quota management, Projects, Quotas management.

Environment: Redhat Linux, Web Sphere, Virtual Box, RedHat Virtualization (XEN), Solaris 8/9, Apache Tomcat and Jboss, Oracle Cluster, VMWare 5.x, vmotion, DRS, HA Cisco Nexus 3k, 5k, Firewall

System/Network Administrator

Responsibilities:

• Installation, configuration and administration of Red Hat Linux servers and support for Servers.
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation
• Managing Compaq and Linux workstations and servers.
• Installation of patches and other software packages.
• Responsible for network analysis, configuration management and develops improvements for system software performance, availability and reliability.
• Monitoring system performance, adding /removing /administering hosts, users, disks on DNS / NIS domain.
• Configuration of Hardware and Software RAID on Digital & Sun Servers
• Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Implemented traffic filters using Standard and Extended access-lists.
• Designed and implemented an IP addressing scheme with subnets for different departments.
• Implemented and monitored the network using network sniffing and scanning tool as Wireshark.
• Wrote bash shell scripts for getting information about various Linux servers.
• Administering NFS Mounts.
• Backed up and restored data from tape in ufsdump, tar, cpio & dd format.
• Configured the Send Mail configuration file, created e-mail ids, created alias database.
• Handled troubleshooting the configuration file, configured the Boot file for the Domain Name Server to boot, configured and updated the Zone database.
• Installed various software packages such as tcpd, ipfilter and patching the appropriate software.
• Planned for storage and backup including studying the disk space requirement and backup device performance.
• Troubleshooting Backup and Restore Problems Creation of LVMs using Linux utilities.
• Monitored overall system performance, performed user management, system updates and disk & storage management.
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across the network. Environment: Redhat Linux, Sun Solaris, Suse Linux, AIX, SAN, Samba, NFS, VMware ESX and VMware server, Apache, Tomcat and Jboss, Networking, DNS, DHCP, Oracle Cluster, Web sphere servers.