SUMMARY

• 6+ years of experience as a Linux/Unix System Administrator.
• Experience in Linux (RedHat Enterprise Linux, Centos, Ubuntu, OpenSUSE), UNIX (IBM AIX, HP - UX, Solaris).
• Experience in clusters products running on AIX and Linux, General Parallel File System (GPFS), IBM Systems Director, Linux on IBM System z, Cryptography products on IBM Systems i, p, and x
• AIX UNIX administration of standalone, LPARs, and HACMP clusters connected to IBM HMC console.
• Experience on Kickstart and Jumpstart installations of POSIX compliant systems like Solaris, CentOS and OpenSUSE and experience in Virtual Machines.
• Administration of RHEL versions 6,6.3,6.4,6.5/7 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Experience in Creating, Maintaining of User Accounts, Profiles, Security, Permissions, Disk Space, partitions and mounting/unmounting file systems Knowledgeable in VERITAS Volume Management, Solaris Volume Manager and Logical Volume Management on Linux with LVM Knowledgeable in HTTP, HTTPS, FTP, SFTP, DHCP, DNS, SNMP TCP/IP, UDP, ICMP, VPN, POP3 protocols.
• Experienced in AIX … installation, configuration and migration using NIM Server.
• Experience in migrating AIX 6.1/7.1 servers to AIX 7.1/7.2 using NIMADM.
• Experience in installation and configuration of virtual I/O Server (VIOS) 1.5, 2.1, 2.2, and 2.3.
• Experience in installation of AIX in virtualized LPAR environment on IBM pSeries & DLPAR.
• Experience in managing IBM pSeries hardware from HMC, IVM/AMM & firmware upgrades.
• Experienced in administration concepts such as virtualization (VIOS) and logical partitioning (LPAR/DLPAR) of CPU/memory and Live partition mobility (LPM).
• Hands on experience with Live Partition Mobility (LPM) from one server to another.
• Thorough understanding of fundamentals of AIX LVM and file system concepts.
• Expertise in user/system resource management, paging space management, job scheduling.
• Configured HACMP 4.x/5.x to monitor, disaster recovery, detect and react to failure events, allowing the system to stay available during unexpected software problems and configured to react to hundreds of system events.
• Installation, configuration and support of GPFS servers & troubleshoot GPFS issues.
• Experienced in Process administration (i.e. monitoring processes using PS utility, signaling a running process using KILL and KILLALL command, monitoring processes and system load using topas, vmstat, iostat, netstat, tprof, svmon, lvmstat, sar, nmon and uptime utilities, monitoring logs, scheduling processes using Cron utility) and error logging subsystem.
• Configuring TCP/IP network on AIX including DHCP, DNS, NIS, NFS, sendmail, ftp, remote access, security management, and system troubleshooting skills.
• Expert in setting up ssh, scp, sftp connectivity between UNIX hosts.
• Experienced in Secured Unix systems using BindView, AIXPert, and Tripwire
• Experience working in NFS/NAS, Storage Area Networks (SAN), SSA disk storage environment.
• Experience in connecting to an EMC disk subsystem with powerpath and MPIO.
• Familiar with Tivoli Storage Manager (TSM) for backup automation with policies configuration for Web-based databases, setup consisted of server and client backup
• Resolve application startup problems, path problems, and name conflicts, TCP/IP, LAN /WAN, BIND, sys logging and networking problems.
• Involved in installing, configuring and administering Red Hat Linux 5.0, 6.0, 7.0 using Jumpstart, Interactive and Kickstart installations.
• Involved in Installing, Configuring and Maintaining Web Logic application server, Web Sphere Application Servers, Apache, and Send mail.
• Experience in installation and configuration of IBM System P … p5-570, p5-550, p5-55A, p6-570, … RS-6000 Servers.
• Supported hardware including IBM Blade Center hardware HS20, HS40, and JS20s, JS21s & JS41s (PowerPC) and older IBM RS6000 (models F50 and 43P).
• Team player with excellent communication and inter-personal skills.
• Experience with working in production, development and testing environments.
• Support for the critical data in production environment and 24 * 7 on-call support.

TECHNICAL SKILLS

Operating Systems: Red Hat, Fedora, SUSE, Debian, Ubuntu, CentOS, IBM-AIX, Sun Solaris, and HP-UX

Automation/Build Tools/Monitoring: Confluence, VERITAS Volume Manager, Nagios, Web Methods, Puppet, Chef, Jenkins, & Nagios.

Languages: Shell Scripting, Bash scripting, Python, Ruby, Java & Groovy

Networking: TCP/IP, NIS, NFS, DNS, DHCP, LAN, FTP/TFTP, SSH, & SFTP

RDBMS: ORACLE, MySQL, PostgreSQL and MS SQL Server

Virtualization /Storage: VM Ware ESX/ESXi, Docker, Amazon AWS/EC2, Vagrant, Satellite, OpenShift, LVM, SCSI, SATA, Ext 2, Ext 3, Ext 4 and NAS(NFS, SAMBA, RAID 0/1/5) and SAN(iSCSI, FibreChannel)

PROFESSIONAL EXPERIENCE

Confidential, Richardson, Texas

Unix/Linux Admin

Responsibilities:

• Responsible for troubleshooting issues related to Linux server's file systems, memory usage and experience in installing several packages/software on Linux servers and providing support for them.
• Installation of RHEL (Red Hat Enterprise Linux) 5.X, 6.X, 7.X administrator and server maintenance
• Linux servers, administrator of Red Hat Satellite Servers to avoid outage and developed strategies for enhanced system resource utilization.
• Work in a team supporting, troubleshooting, monitoring, repairing routine and complex issues and other day-to-day tasks associated with UNIX environments.
• Integrated Nagios and Groundworks monitoring output in one web-console.
• Worked on Setting up cronjobs to grab server statistics where monitoring is not currently enabled.
• Experienced in BMC Blade Logic executing site maintenance and job management tasks.
• Worked on BMC Remedy ticketing system to track all case issues
• Wrote korn shell scripts for application startup and shutdown for HACMP cluster.
• Configure Redhat NFS and AutoFS on both clients and servers.
• Installed and setup Chef for infrastructure automation.
• Automated installing the Linux packages and administering Linux service using Chef, and automating product installation configuration.
• Wrote many Chef Cookbooks and created Chef Recipes for automation tools and builds.
• Setup the Chef infrastructure for the environment for software configuration management.
• Experienced in Management of inventory, fabrication schedule, and development of process metrics for dimensions for crucible component fabrication process
• Experienced in Setup the Chef servers, Chef workstations, Chef nodes and involved in bootstrapping new infrastructure chef nodes.
• Design and implement an automated system installation and configuration system, based on Redhat Kickstart capable of complete unattended builds for common server configurations.
• Provided day-to-day technical support and troubleshooting on almost 250 Redhat servers.
• User account management creation, deletion and assigning permission.
• Involved in Installation Troubleshooting and Maintenance of Red Hat Enterprise Linux 4.0/5.1 Servers and Workstations.
• Experienced with Tripwire server security, AIXPERT, Audit logs, custom written trigger level Oracle table auditing.
• Customized the AIX security expert utility (aixpert) with custom scripts to meet corporate security standards
• Involved in managing Standard Partitions using fdisk and parted and managed using File Systems using Software RAID and Logical Volume Management (LVM).
• Implemented Basic and Advanced User Administration by applying SUID, SGID and STICKYBIT file permissions.
• Involved in tuning Kernel Parameters, managing devices and monitored processes and Resources.
• Configured and accessed various consoles to manage system Logging, time synchronization, printers and task Automation.
• Managed rpm packages using Red Hat Package Management tools like YUM and RPM
• Performed Installation by using KICKSTART Method and Utilized the Rescue Environment of Anaconda.
• Configured Static and Dynamic Network Setting using IPV4.
• Installed and Configured Network Servers like NFS, APACHE, SAMBA, NIS, and FTP.
• Implemented Backup using Cpio, Tar and Dump Commands.
• Good Understanding of DNS and DHCP Servers.
• Configured NFS and Samba for Sharing of the files between multiple Operating Systems.
• Deploy servers using RedHat satellite profiles, registered machines and manage set alert to ensure up-to-date servers
• Responsible for the installation of Redhat Satellite OS and to create channels for testing, development and production servers.
• Work on implementation of security controls and monitors compliance with security policies and procedures (PCI, SAS70, HIPAA, DSS, etc).
• Managed software development life cycle for the Digital Addressable Controller(DAC) and Remote Addressable
• Experienced in tasks like managing User Accounts and Groups, managing Disks and File Systems.
• Experienced in creation and maintenance of user accounts and active directory.

Environment: RHEL 5.X, 6.X, 7.X, LDOMs, LVM, ZFS/ZPOOL, VERITAS Volume Manager, Solaris, RHE Linux, AIX, VMWare ESX 4/5, DNS, DHCP,ICMP,TCP, UDP, Confidential DNCS, DCS VERITAS Netbackups, VCenter VSphere, Yum, Netapps, Hitachi, HP ProLiant servers, HP blade systems, Python, PERL, Ruby, Puppet, chef and ansible.

Confidential, New Jersey, NJ

Unix/Linux Admin

Responsibilities:

• Supported Linux environment with around 7000+ servers running Redhat Linux.
• Installation, Configuration, and OS upgrades on RHEL 6.X/7.X.
• Proficient in patching RHEL and Solaris servers to recommended security levels. Maintaining and upgrading operating systems like RHEL platforms.
• As Linux admin worked on Changed management and Incident management tickets used Service Now tool.
• Created custom XML template for AIX Security hardening using AIXPert and Power SC to Banks Technical Security Standards.
• Used AIXpert command to set up variety of system configuration settings to enable the desired security level
• Responsible for setting up VMware 4 and 5 infrastructure, including hosts, SAN, fiber, and networking.
• Experienced in Monitoring CPU, memory, physical disk, Hardware and Software RAID, multipath, file systems, network using the tools NAGIOS 4.0 monitoring.
• Wrote Korn shell scripts to gather data from Netbackup, created a database, and charted data to show trending and aid in load balancing.
• Used chef for server provisioning and infrastructure automation in different environments.
• Written Chef Cookbooks for various DB configurations to modularize and optimize end product configuration
• Hands on experience on Installation, Conmfiguration, Administration and Troubleshooting of VM Ware ESXi Virtual Center, VI Client.
• Hands on experience with Installation, Configuration, Oracle Data Guard, Disaster Recovery and Patching, upgrading and administering Terabytes of Oracle Databases.
• Managed physical storage by creating physical, extended and logical partitions including swap partitions. Examining and modifying file system parameters.
• Managed Logical volumes by Implemented LVM storage, extended logical volumes and file system, extending and reducing volume group, creating snapshot of a logical volume for data backup.
• Maintained my own second level system running AIX under z/OS, thereby obtaining many JCL and operating system skills.
• Worked on Manual migrations of DNZ zones from 10.x to 11.x ZoneRunner via F5 “BIND”
• Configured Linux network, basic trouble shooting process, Diagnose and corrective network problems. Proactive maintenance on systems by timely upgrading Patches to the systems and applications.
• Support high availability clustered Confidential Firewalls running VRRP. Ensure that systems maintain high availability.
• Worked on various applications using Python integrated IDEs Eclipse, Net Beans.
• Worked on WAMP (Windows, Apache, MYSQL, and Python/PHP) and LAMP (Linux, Apache, MySQL, and Python/PHP) Architecture.
• Installed, removed and updated packages/group packages with yum. Systems administration, maintenance, and monitoring various day-to-day operations. Creating and maintaining user accounts, profiles, and security rights.
• Worked with Chef Enterprise Hosted as well as On-premise, Installed Workstation, Bootstrapped Nodes, Wrote Recipes and Cookbooks and uploaded them to Chef-server, Managed On-site OS/Applications/Services/Packages using Chef
• Installation/upgrade, system startup, and system shutdown as needed.
• Administered User and groups: Add/remove user accounts, set/change user passwords, customize password managing policies for the users.
• Secured Linux file access by modifying file and directory permissions, modified file ownership, restrict a file based on a set of specified restrictions using UGO permission scheme, grant or block file access using ACLs.
• Experience in Installation of Red Hat Enterprise Linux 5/6, Ubuntu, on hardware like HP and Dell & Solaris 9, 10 operating systems.
• Deployed Puppet, Puppet dashboard for configuration management to existing infrastructure.
• Production experience in large environments using configuration management tool Puppet supporting with 500+ servers and involved in developing manifests.
• Implemented continuous integration web hooks and workflows around Jenkins to automate the dev test deploy workflow around Puppet codebase.
• Created continuous integration system using Ant, Jenkins, Puppet full automation, Continuous Integration, faster and flawless deployments.
• Installed and maintaining protocols like DNS, FTP, NFS, SSL, SSH, TCP/IP and DHCP Installed Web servers like Apache Tomcat on Red Hat Linux.
• Configured SUDO, granting permissions to users, creating and administrating control and guest domains on LDOMs.
• Proficient in, AIX 5.3, 6.1 and 7.1, Solaris 8/9/10/11, HACMP, Oracle RAC, Veritas suite of products and VIO setup, LPAR, Solaris Zone, VMware creation, Live Migration on the IBM P-Series and Solaris LDOM.
• Initial setup of VIO servers and LPARS using the HMC framework on P750 and P770 platform.
• Decommissioned AIX, Solaris servers by following the process of stopping and removing service groups, databases, local zones and then deallocating SAN.
• Manage Solaris/AIX clients by enabling SNMP to be monitored by Tivoli for Steady state team
• Document and troubleshoot hardware and software issues that occur in this complex environment.
• Analyzes and contribute to planning the architecture of the environment.
• Deploy legacy OS onto latest Solaris 10 host environment
• Undertake Application and Patch Management of the systems on a regular basis including Firmware upgrades.
• Troubleshoot and assist end users with applications related problems.
• Complete understanding of Lights Out Environment like ALOM and ILOM.SMS software for E 10K/15K/25K.SMS1.6
• Setup and deployment of Red Hat Linux 4.8 and 5.4 6.1IBM blade hardware
• Create standardize documentation

Environment: Solaris 8, 9 and 10, Sparc and X86, Patching, SUN ZFS, apache, iplanet, SunOne, TSM agent, Tivoli agent, NFS, VERITAS Netback up, TSM, LDOMS, SUN ZFS, DNS, DHCP,ICMP,TCP, UDP, Python, Perl.

Confidential

Linux Support Engineer

Responsibilities:

• Experience with different flavors of Linux (RHEL, CentOS, Oracle Linux, Debian, and Ubuntu).
• Installed and configured Red Hat Linux Kickstart and Solaris jumpstart Servers.
• System installation which includes new & complete overwrites migration and preservation installation. And also patch installation for (5.X) systems.
• Configuring the devices & handling the hardware problems.Using logical volume Manager to manage VG’s PV’s & LV’s. Creating, deleting &
• Worked on changing the characteristics of PV’s, LV’s & VG’s. Exporting & Importing VG’s.
• Monitoring the performance of system using Topas, vmstat, iostat, netstat commands.
• Worked on Adding, removing the user accounts, changing the characteristics of users likelogin shell, shell prompt, password etc.
• Experienced in Backing up the system using mksysb, backing up user information, restoring information from backup media, cloning the system.
• Designs, configures, implements, and maintains UNIX hardware and operating system environments including; AIX, HP-UX, and Solaris.
• Experienced in Nagios and New Relic for system monitoring.
• Installation, configuration and management of PostgreSQL & MySQL database servers.
• Creates and manage LVM volumes and participate in root cause analysis.
• Experience in writing UNIX Shell Scripts using commands like sed, bash, ksh and perl to automate system admin jobs.
• Resolve network issues and skilled in network protocols such as TCP/IP, and DNS, DHCP.
• Familiar with Disk Management Utility. Hands on experience in file system creation and file system management.
• RPM and YUM package installations, patch and other server management. Scheduling and disabling cron jobs, performance tuning, testing.
• Worked and performed data-center operations including rack mounting, cabling.
• Worked on Tech and non-tech refresh of Linux servers which includes new hardware, OS upgrade, application installation, testing. Set up user and group login ID's, printing parameters, network
• Installing and configuring Apache and supporting them on Linux servers. Designing Firewall rules for new servers to enable communication with application servers.
• Monitored server and application performance & tuning via various commands (vmstat, top, iostat etc)

Environment: RHEL, CentOS, Oracle Linux, Debian, and Ubuntu, VMWare, Veritas, LVM, Postgresql, Mysql