SUMMARY:

• Linux/Unix Systems Administrator with 7+ years of professional IT experience using Red Hat (4.x, 5.x, 6.x), SUSE (9.x, 10.x, 11.x), Ubuntu (8.x, 9.x, 11.x), CentOS (3.x, 4.x), HP - UX (10.x, 11.x) and IBM AIX (4.x, 5.x, 6.x).
• Installation, Configuration and Maintenance of UNIX/LINUX servers in an enterprise environment (Red Hat, CentOS and SUSE Linux, AIX, HP-UX) with SAN/NAS infrastructure across multiple sites for business-critical applications.
• Installation of Patches, Security fixes, Packages on Linux, AIX, and Windows NT/2000 Servers.
• Installed OS by using Kickstart/RHEL Jumpstart/Solaris, and NIM methods.
• Installed, configured and supported virtual server environment using VMware ESX / GSX, VSphere, and Oracle Virtual Machine as per customers' requirements.
• Extensively worked on Linux OS Up-gradation for Patching Linux servers to latest versions and installing RPM packages using Satellite server, RPM's, Yum and up2date. Extensively worked on solaris10 containers, Zones for Virtualization.
• Experience in Migration set up for UNIX/Linux server and SAN storage between data centres, as well as application migration and testing.
• Configuration and managing Puppet Master Server, and also experience in updating and creating modules and pushing them to Puppet Clients.
• Experience in Utilize configuration management tools (Chef / Puppet, Ansible, PowerShell DST, etc)
• Extensive experience in writing scripts, Job Automation, and troubleshooting scripts in Bash & Perl languages.
• Installed dependent libraries and coordinated on version control using GIT.
• Extensive experience on File System, Volume Group management (adding Physical Volume, migrating physical volume, importing and exporting volume group), Paging space and Mirroring using LVM and VERITAS Volume Manager, Swap Space management etc.
• Experience in IBM WebSphere installation, configurations and administration, configured IBM HTTP server and generate plugin, setting up nodes, data source, and virtual host; configure application server.
• Installation and configuration of JBoss for standalone server create user for Jboss admin group, Deployed WAR, EAR and data source creation.
• Installation and configuration for Oracle, Sybase, SQL Server, Informix Databases.
• Day-to-day operation of various Storage Area Network (SAN) and Network Attached Storage (NAS) devices. Worked on Storage area networks related to EMC, NetApp and HDS.
• Experience on User account management and configuring Centrify, OpenLdap, Quest, NIS and SiteMinder.
• Configuration and maintenance of NFS, DNS, NIS/NIS+, DHCP, SMTP, and Networking with TCP/IP
• Experience in AWS Cloud platform and its features which includes EC2, VPC, EBS, AMI, Cloud Watch, VPN Servers. Experienced in Elastic Search, Logstash and kibana.
• Monitors systems activities and fine tunes system parameters and configuration to optimize performance and ensure security of systems. This includes kernel parameters, resource allocation etc.
• Experience with network security and administration, specifically with firewalls, switch and load balancer administration. In depth knowledge of network design, security and protocols.

TECHNICAL SKILLS:

Operating Systems: Linux (RedHat 5/6/7 Suse 10/11), IBM AIX 7.x, 6.x, 5.x, Sun Solaris 11/10/9/8/7/2.x, HPUX11.0, Windows NT / / Vista.

Sun Fire Servers: E25k, E15k, 12k, E280R, E480R, V240, 420R, V440, V480, V490, V880, V, E6900 and E2900.

Data Centre Servers: E250, E450, E3000 and E3500, M5000, M8000. IBM P5, 6, 7 series. DELL (Power Edge), HP (Pro Liant G7 & G8), IBM Blade Center

Arrays: Sun StorEdge 3130, A1000/D1000, EMC DMX 800 and 1000

Languages: Shell Scripting, Bash, Ksh, PERL, Python, PowerShell, Ruby, HTML, JavaScript

Databases: Oracle 11g/10g/9/8, Sybase 11.5.1, IBM DB2, SQL, MongoDB, POSTGRESSQL, MYSQL, MSACESS

Networking: TCP/IP, DNS, NFS, NIS, SSH, DHCP, VLAN, Cisco Routers / Switches

Tools: Web logic 10.x/9.x/8.x, Web sphere, Apache HTTP/Tomcat /JBOSS, VERITAS Volume Manager, VERITAS Net backup, Cluster server 3.5 &4.1, Sun Cluster 2.x & 3.x, Nagios, Splunk, Puppet, Chef, Ansible, Cloud stack, VMware

Storage: LVM, SCSI, SATA, Ext 2, Ext 3, Ext 4 and NAS (NFS, SAMBA, RAID 0/1/5) and SAN (ISCSI, Fiber Channel) Net App filers.

AWS: EC2, VPC, EBS, AMI, Cloud Watch, VPN Servers, E2C, S3, RDS, EBS, Elastic Load Balancer, Auto scaling

PROFESSIONAL EXPERIENCE:

Confidential, Owing Mills, MD

Linux Administrator

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 5/6 and Solaris 9/10 systems.
• Performed automated installations of Operating System using Kickstart for Red Hat Enterprise Linux 5/6 and Jumpstart for Solaris 9/10 Linux.
• Administered Linux servers for several functions including managing WebSphere, Apache/Tomcat server, and mail server, MySQL database, SVN.
• Automated server building using system imager, PXE, Kick start and Jumpstart.
• Applied appropriate support packages/packages to maintain system integrity.
• Working on volume management, disk management, and software Raid solutions using VERITAS volume manager. File system tuning using VERITAS File system (VxFS), coordinated with SAN team for storage allocation and Disk Dynamic Multipath
• Experience in configuring and upgrading the device mapper Multipath software on the servers.
• Building of new servers which include rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
• Provided virtualization support using Red Hat’s KVM platform to create and manage virtual host.
• Responsible for regular maintenance, security, troubleshooting and upgrades.
• Monitoring and managing the company’s network performance and network security.
• Tuning the kernel parameters based on the application/database requirement. Also regularly monitored system performance with the help of system utilities like vmstat, iostat, prstat etc. and other utilities like sar, top etc.
• Troubleshooting Apache issues such as performance testing and tuning (i.e. worker, pre-fork, mpm configuration), failure of Apache to restart, queuing of requests, etc.
• Create filesystem - LVM - scanning the disk, vg and lv create according to payback required directory, provide filesystem (mkfs), mounting the filesystem in fstab, create directory for user and groups, user add and group add, assign permission to user and groups as required.
• Apply patching of the server; install the entire package required according to server config sheet, host file update.
• Worked on virtualization technologies such as VMWare, ESX, ESXi, etc on Linux.
• Hands on experience with migrating the existing applications from WebSphere application servers 5.x to 6.x on Linux/AIX.
• In-depth knowledge of NFS, DHCP, NFS, FTP and network troubleshoot issues and solutions.
• Experience using YUM and RPM for package management.
• Day to day automation using Ansible and puppet.
• Extensive use of Perl & Bash shell for scripting.
• Performance enhancement and tuning for Tomcat, Apache and JBoss servers on RHEL6 OS virtual instances.
• Worked on SAN storages of EMC products like CLARIION CX3, CX4, and Symmetric DMX-4 for storage and backup.
• Upgraded and maintained software packages on servers using RHEL Satellite and Repository servers.
• Kernel tuning, Writing Shell scripts for system maintenance and file management.
• Monitored Hardware console for any hardware issues. Troubleshoot any operating system issues.
• Created Root Cause Analysis (RCA) for any server outages and server problems.
• Monitored ESX server alarms and VM's alarms and acted on those incidents to resolve.
• Implemented V2V and P2V conversion using VMWare Converter.
• Coordinating with various vendors for hardware related issues.
• Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VCS in heterogeneous SAN environment.
• Responsible for deployment and support of VMware vSphere ESXi 5.1
• Installing and Managing ESX and ESXi servers on Cisco servers.
• Installation of vCenter Server, vCenter Components and upgrading VMware Tools.
• Creating resource pools and adding the VM’s into the pools.
• Clone the server in VCenter , storage & cluster allocation, add cpu & memory, add hard disk, allocation network adaptor, get the server on network assigning hostname, IPS and net mask.
• Perform daily health checks for servers like checking CPU memory utilization, Check the connectivity
• Updated ESX host’s using VMware Update manager.
• Expertise in scheduling tools such as Control M and Autosys for setting up jobs for backups and monitoring process.
• Install puppet agent on server, create iptables files/ firewall files, install powerbroker and LDAP Clint. Check VMWare tools status/upgrade, enable log collection, and add security limits.
• Set ssh key as per server permission sheet, add PAM /PRC group per user in. groups for allow the access of the user, add the new server in EPV valet.
• Submit workflow for SMTP , NetBackup, BMC monitoring tool, submit soft firewall and hard firewall data-flow request for source and destination server with corresponding port.
• Storage Migration ; Work for database storage migration from thick to thin within EMC storage and XtremIO to EMC.
• As per cluster databases, request new SAN with total amount of disk as well as number and size of luns. After allocation of luns by EMC- rescan the lun and rename the luns Id/powermt.
• Puppet automation; implemented configuration management with puppet.
• Used puppet for central management of configuration files and software package management.
• Wrote custom modules and manifests , downloaded pre written modules from puppet forge
• Used puppet enterprise tools for updating the patch, to start and stop various red hat services.
• AWS : Responsibilities include designing and developing new back-end services, maintaining and expanding our AWS infrastructure , and providing mentorship to others on my team.
• Experience in AWS cloud environment’s and also familiar with EC2 , Cloud watch and Elastic IP’s and managing security groups on AWS
• Configured Elastic Load Balancers with EC2 Auto scaling groups
• Implemented AWS solutions using E2C , S3 , RDS , EBS , Elastic Load Balancer , Auto scaling groups.
• Load balancer; Work as middleman for taking care of load balancer request for customer and implemented in F5 device using API automation tools. Add/delete load balancer request from customer that used to come pool name, VIP name, member name, persistence, port and irules
• Experts troubleshooting skills, and ability to clearly verbalize and communicate step-by-step process.

Environment: RHEL 5/6/7, SLES 9/10/11, AIX 5/6/7, HMC 7/8/9, IBM P5, P6, P7, DELL, HP, Oracle 11gR1, 11gR2, Veritas cluster services, Chef, Puppet, VMware, ESX, Netapp, ESX, PowerShell, bash, Perl, nagios, NetBackup, VSphere, Windows, IBM blade servers, AWS

Confidential, Owing Mills, MD

Unix/ Linux Admin

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of Linux, Sun Solaris, AIX, HP-UX systems.
• Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center
• SWAP box configuration, Implementation of disaster backup and recovery. Performance Management & Tuning of RHEL.
• Installed and configured SAMBA server for windows and Linux connectivity.
• Setup and maintain checkpoint security policies including NAT, VPN and secure remote access.
• Troubleshoot security issues related to CISCO, checkpoint, Ids/IPS and Juniper Netscreen firewalls.
• Expertise in remote access and application virtualization technologies such as XEN, VMWare, ESX, ESXi, etc on Linux.
• Implemented and configured Backup policies and Storage Units.
• Installation and configuration of Veritas Storage Foundation Suite: Veritas Volume Manager, Veritas File System, Veritas Cluster Server and Oracle SF RAC
• Installed Web Logic 8.1 with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Implemented NIS and NFS for administrative and project requirements.
• Installed and Configured Web and investigate the configuration changes in the production environment.
• Tuning the kernel parameters based on the application/database requirement.
• Upgrading RHEL 5.0 to RHEL 5.5 using live upgrade and manual upgrade.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x
• Worked on network connectivity, SAN storage, creating LVM and taking TSM backup .
• Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Monitored the performance of the system using top, sar, ps, prstat, vmstat, netstat, iostat, and cpuinfo to check the CPU utilization, bottlenecks of I/O devices,, memory usage and network traffic.
• Troubleshoot network connectivity used ping, netstat, ifconfig, and trace route commands . Login to the remote system using sudo, putty, and telnet. Transfer files across the systems on the network used ftp, scp, and rsync commands.
• Linux technical support and prepared technical documentation for check in verification.
• Regular backing up of critical data and restoring backed up data. Worked in solving tickets issued on day to day activities and problems related to development and test servers.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Set up Linux servers for iSCSI LUN boot instead of using local hard disks
• Set up Sun servers for SAN -through-FCP boot as against booting from internal hard disks
• Configured Sun servers M4000 and M5000 for operational readiness upon OS installation
• Set up Linux servers for LAMP implementations and readiness
• Created File systems from local storage as well as NFS partitions for application portability
• Created Zetabyte file system ( ZFS ) in Solaris 10. Created zpools . Exported ZFS from local zones to local zones.
• Worked and performed data - center operations including rack mounting, cabling.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• 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).
• Configured Elastic Load Balancers with EC2 Auto scaling groups
• Implemented AWS solutions using E2C, S3, RDS, EBS, Elastic Load Balancer, Auto scaling groups.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Adding servers to the domain and monitoring them using spectrum, sitescope, cacti. Provide internal analysis and support to ensure proper escalation during outages or periods of degraded system performance.
• Ensure new applications are documented in documentation repository.
• Manage turnover of new applications to 24x7 support team.

Environment:: F5, RHEL 5,6, AIX 5.x/6.x, Splunk, Websphere, Weblogic, Jboss, Apache, Tomcat6, Bladelogic, Chef, MySQL, VMWare, Kickstart, NetApp, NFS, Bash, Korn, Perl, Dell Servers, Cisco, AWS

Confidential, Dallas, Texas

Linux Administrator

Responsibilities:

• Installation and administration of RHEL 4.0/5.0 and Sun Solaris.
• Involved in Building and configuring Solaris 8/9/10 using Jump start server and Red Hat Linux Servers using Kickstart server as required for the project. Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Backing up AIX servers using mksysb and ADSM/TSM using IBM 3494 automatic tape libraries and recovering
• Installed and configured Solaris 10 servers with Zones and containers with Sun ZFS.
• Primary responsibility includes building and supporting Solaris/ Redhat Linux 3,4 servers.
• Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and Weblogic application server.
• Managed physical and Logical volumes, Volume Groups etc. in LVM for Linux, AIX and HP-UX.
• Automation of jobs through crontab and autosys.
• Installation of packages, patch management, volume management on Suse servers using YaST.
• Applied appropriate support packages /patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine - tuned system parameters and configurations to optimize performance and ensure security of systems.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, BEA Web logic etc.
• Extensive use of Veritas Volume Manager for Disk management, file system management on Sun Solaris environment.
• Extensive use of Korn shell, Bash for scripting.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VCS in heterogeneous SAN environment.
• Regular disk management like adding / replacing hot swappable drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
• Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
• Build LPAR and DLPAR system and Installed AIX 5.2, 5.3 on LPAR using NIM.
• Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
• Integrating Weblogic 10.x and Apache 2.x and deploying EAR, WAR files in Weblogic Application servers.
• Management and monitoring of various services using Service Management Facility and Service Administration.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Fine tuning of Servers and configuring networks for optimum performance .
• Organized various meetings with teams as mentioned above for tracking their requirements as inputs to get this done and designed the plan/steps involved and took user approvals.
• Setting up network environments using TCP /IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Installation, maintenance and administration of Oracle and Db2 Server on Sun Servers.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN Environment.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Created new groups and tested first in development, QA Boxes and then implemented the same in production Boxes.

Environment: RHEL, Solaris 10, AIX 5.3/5.2/5.1 on IBM Pseries Server, Red Hat AS 4.0/3.0, HMC-LPAR, Storage SAN, Z/VM, Veritas cluster server, Solaris/Veritas volume manager, Lap, IBM Tivoli Storage Manager 5.4/5.3, NIM, Korn shell scripting, Vmware

Confidential, Dallas, TX

Server Administrator

Responsibilities:

• Troubleshooting Hardware of Desktop PC’s, Installing, Troubleshooting and maintaining operating system by installing regular updates, Troubleshooting Network and connecting all the clients to the domain, Installing Anti-Virus on Client PC’s as well on Client Server, Configuring & Troubleshooting Outlook Express and MS Outlook, Installing, configuring and maintaining other third party software, Solving client’s problems through telephone by Level 2 support,
• Giving solution for client’s problems by accessing to their desktop remotely through intranet, Coordinating with other departments for the smooth functioning and to resolve the issues at the earliest, Ensure Data security and machine uptime, maintaining the system inventory of all Clients.
• Upgrading Hardware of PC’s on user request, Installing and configuring important security patches and updates
• Providing technical assistance to our customer support team, software development team, was responsible for purchasing the Computers, deciding on the Configuration of the computers for the Company, We ended up assembling all of these computers for the Startup Company, I was responsible in installing all the software’s on these Computers.
• Installation, configuration and troubleshooting of Solaris, Linux RHEL, HP-UX, AIX operating systems.
• Apply OS patches and upgrades on a regular basis and upgrade administrative tools and utilities, configure or add new services if necessary.
• Installed, configured and upgraded Solaris Volume Manager (SVM/SDS), Logical Volume Manager (LVM), Veritas Volume Manager (VxVm) and Veritas File System (VxFs).
• Implementation of RAID techniques and the creation of Disk groups and volumes, plex using Veritas Volume manager.
• Extensive Space allocation to Meta devices, detaching and clearing the devices if not in use.
• Configured IPMP in Solaris and bonding in Linux.
• File system resizing and extending volumes using Online Journal File System (JFS) on Linux/HPUX.
• Worked on upgrading and patching Redhat Satellite Server.
• Building Linux servers by using VMware ESX 3.x and also involved in channels and pushing the packages in Redhat Satellite Server.
• Installed and configured Solaris 10 servers with Zones/Containers.
• Troubleshooting the issues on virtualization of machines using Zones on Production Department.
• Worked on Service management on Solaris 10 through SMF (Service Management Facility) svcs, svcadm, svccfg etc.
• Implemented, configured and managed Logical Domains (LDoms) for a virtualized environment.
• Scanning LUN's using ioscan/insf, running EMC/Symcli/NAS host end commands and adding LUN's and setup up new layout for Oracle data base.
• Performed automated installations of Operating systems using Jumpstart, Flash Archive for Solaris, ignite for HP-UX and Kickstart for Linux.
• Worked with DBAs for installation of Oracle RAC (Real Application Cluster) on Linux servers running Redhat Cluster Suite (RHCS) and Global File System (GFS).
• Monitoring Virtual memory, Swap management, and Disk and CPU utilization by using various monitoring tools.
• Installing & Configuring Virtualization Technologies like VMware ESXi.
• Actively participated and supported in the migration of production servers from Data Centers.
• Resolving critical problems, performing root cause analysis, document solutions and provide preventive Measures.
• Fixing backup failures and debugging backup scripts.
• Installed and Configured Veritas Netbackup client and advanced client software's in Production servers.
• Worked on SAN/EMC storages with HBA card configuration and different level of RAID configuration.
• Installing, upgrading, querying and checking dependencies of RPM software packages.
• Created RPM packages using RPMBUILD, verifying the new build packages and distributing the package.
• Verifying and rebuilding corrupted RPM database.
• Verifying and validating GNU PGP package signature.
• Fail over/Fail back Remedy applications during licenses or any software upgrade on clustered servers.
• Responded to all UNIX system problems 24x7 and resolving them on a timely basis.

Environment: Solaris 10/9/8, Linux RHEL 5, Sun Fire 6800/E6500 Server, E10K/25K, T2000/T5000, M5000, HP L/N/RP series, IBM Power 570, p5 505 Express servers, Apache, SAN EMC/HP/Hitachi, Veritas Volume Manager, VCS, Veritas Netbackup