SUMMARY:

• 7+ years of experience specialized in UNIX System Administration working on server - based operating system; kernel configurations on Red hat Linux, Cent OS, SUSE, Debian 8.3, Ubuntu 15.10 and Solaris 11.3 (32 bit & 64bit) Networking, kernel Parameter & Tuning, Trouble Shooting System & Performance Issues, Package Management and Patch Management.
• Extensive experience in installation, configuration and administration of Solaris … Redhat … IBM AIX …
• Extensive implementation and troubleshooting experience under Client Server Systems.
• Configured Kick start servers for complete hands-free installation of workstations, with custom profiles, begin/ finish scripts and custom package suites/clusters.
• Experience on installation of Web Sphere application.
• Experience on installation of VMware ESX, ESXI migration of vm's from one host to another host, migration of vm's from one data storage to another data storage, patch management.
• Working experience on Windows Active Directory and LDAP.
• Experience on joining Linux server to Active Directory using win bind and samba protocol.
• Management of Puppet automation tool including installation of puppet agent on client server.
• Integration of various network related services like NFS, NIS, and DNS.
• Installation and configuration of Apache, Tomcat / Web logic on Linux.
• Database Installation includes Oracle, SQL, and MYSQL.
• Monitor Disk space and space as needed in LVM.
• Setup and administration of VERITAS Volume Manager and HA Clusters.
• Troubleshooting skills with network protocols such as DNS, TCP/IP, SMTP, and SNMP.
• Hands on experience with ticketing tools such as Remedy and Quick base.
• Experienced in installation of Operating Systems, Packages and Patches, adding Peripheral, maintaining user accounts, System Security, backup/recovery, performance tuning, troubleshooting at various levels.
• Management of User accounts, System security, kernel performance monitoring and tuning.
• Basic knowledge of networking devices such as F5 load balancers.
• Web /Application Server Tomcat, Apache, Web logic.
• Willingness to work on flexible hours for production, backup and on-call support for 24/7 environments.
• Good communication skills self-motivated with a high degree of attention committed to work and have Authorized to work in the US for any employer

TECHNICAL SKILLS:

Operating Systems: Solaris 11, Windows 2000, XP, 2003, NT, 2008, 2012, Red Hat Linux ES AIX 7, HP-UX 11.23

OS Administration: RHEL 7.2, Solaris 11.3

Scripting Tools: Shell, Perl, Python, Ruby Scheduling Tools AutoSys, crontab

Application servers: J Boss AS 5.x, 6.x, 7.x and J Boss EAP 5.x, 6.x Web Servers Apache(http), apache-tomcat, and Apache HTTP Server E-Mail servers Send mail, Postfix, Zimbra

Monitoring: Nagios, Zabbix

Networking: DNS, DHCP, TCP/IP, SMTP, LDAP

Database: Oracle 8i/9i/10g, DB2, MS SQL Server and Sysbase Third Party Tools MRTG, CACTI, Splunk, Puppet, Chef, DevOps Virtualization tools VMware vSphere

Others: MS-Office

WORK EXPERIENCE:

Unix/ Linux Administrator

Confidential, Austin, TX

Responsibilities:

• Installation & Configurations of Red Hat Enterprise Linux, Fedora Linux and Cent OS, Maintenance & System Administration.
• Worked with Open Stack Services like Horizon, Nova, Swift, Cinder, Neutron, Keystone, Heat and Glance.
• Create and managed Open Stack instances, flavors, networks, and attaching volumes using Horizon and CLI.
• Implemented and maintained services running on Linux and server platforms deployed in AWS EC2 and Open Stack based private cloud.
• Deployed Puppet agent, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure.
• Installed and configured Linux/Unix and Windows operating systems on VMware server.
• Worked with KVM and VMware.
• Wrote shell scripts using languages like Bash, Python, and Perl to automate day to day admin jobs.
• Configured LDAP Server and LDAP Client on Linux machines for authorization and authentication.
• Worked with TCP/IP network configuration.
• Administered and Configured Logical Volume Manager which involved create and modify file system, logical volume, Physical volume, Volume groups, mirroring and un-mirroring of volume groups, hot spare physical volume.
• Performed upgrade on Red hat Linux whenever required.
• Performed hardware and software installations, upgrades, and maintenance, patch administration, kernel modification/upgrades, file system management, performance and security analysis, and network configuration/tuning.
• Prepared Windows/Unix security standard preparation document and system check procedures to keep the systems secured & updated.
• Backend Solution, Day to day sys Admin & Monitoring, File sys mgmt.& disk mgmt.,
• Wrote UNIX shell scripts for automated installations, to extract logs using Bash, and Python.
• Responsible for maintaining security on all UNIX system for regulatory compliance.
• Implementation and troubleshooting of network services like NFS, FTP, NTP, Telnet, SSH.

Environment: Red Hat Enterprise Linux, Fedora Linux, Centos, AWS, Open Stack, Puppet, VMware, KVM, Shell-Scripting, LDAP, LVM0.

Sr. Linux Administrator

Confidential, Indianapolis, IN

Responsibilities:

• Provided support for more than 700 Redhat, Cent OS servers.
• Expertise in creating VM Templates, cloning and managing Snapshots.
• Configured and deployed multiple VM's using Vsphere client.
• Expertise in configuring Red Hat Cluster Nodes for any legacy applications and verified the daily health check on the Cluster Nodes utilizing clusters.
• Installing and configuring Puppet, writing manifests to automate day-to-day activities.
• Managed 500 servers using puppet to install and update system, application configurations.
• Experience in configuring monitoring tools like Xymon.
• Performed system performance monitoring, created alerts and benchmarking for • Performance analysis on all application & production servers.
• Developed multiple shell scripts for system monitoring.
• Monitored server and application performance & tuning via various stat commands (top, sar, iostat, vmstat, net stat, mpstat, prstat, nfsstat, prtconf, prtdiag, iostat, top, printmgr, hpimliview, dmidecode, smc etc) and tuned I/O, memory etc for SUN Solaris and RHEL Servers.
• Provided troubleshooting solutions through automations and monitoring system stats on Splunk applications with the help of Splunk-dashboards during new releases.
• Expertise in handling crisis during heavy load on servers and maintaining zero downtimes.
• Working in war-room, providing continuous technical support throughout release and production period.

Environment: Redhat 5 & 6; Solaris 9, 10; HP Gen 8 Blade and Rack mount Servers, IBM S/6000, MySql Database servers, Veritas Net Backup, IBM Storage Manager, Cisco UCS, VMware ESX 4.x.

Unix/ Linux Admin

Confidential, Bloomington, IL

Responsibilities:

• Supported Linux servers in production/QA/ Development Environment.
• Launching Amazon EC2 Cloud Instances using Amazon Images (Linux/ Ubuntu)
• Supported 200+ AWS cloud instances running Ubuntu, Redhat and Windows environments.
• Worked on VMware and vSphere 4.0. Dealt with ESX, ESXi servers.
• Installed ESXi 4.1 Hypervisor on HP Servers.
• Developed Unix Shell scripts for regular and periodic jobs and also for system admin jobs.
• Wrote Python scripts to monitor a variety of admin services.
• Installing, configuring and maintaining apache, samba, Web Sphere & Web Logic Application Servers.
• Proficient in installation, configuration and maintenance of applications like Apache, LDAP, PHP.
• Installed and configured various operating systems like HP-UX, CentOS.
• Installation of systems using Jumpstart for Sun Servers and Kickstart for RHEL on HP HW.
• Configure, support and perform routine maintenance of hardware and software for Linux servers.
• Involved in Hardware and software evaluation, recommendation and vendor management.
• Regularly applying patches for Redhat Linux, Sun and HP systems.
• Extensively worked with Business, Application, Database, Network and SAN Team for project requirement.
• Plan, document, review and maintain system administration guidelines and policies.
• Ensure Data Center operation meets required service levels.
• 24x7 support for the UNIX servers. Rotating on call pager responsibilities for Production environment.
• Environment: Red Hat Enterprise Linux, HP-UX, CentOS AWS EC2, VMWare and VSphere, Shell scripting, Apache, samba, LDAP, Web Sphere& Web Logic Application Servers, Unix Workstations.

Associate UNIX/ LINUX Administrator

Confidential

Responsibilities:

• Installing, tuning, troubleshooting and patching of Red Hat Enterprise Linux servers.
• Installation and configuration of Web Logic and Web Sphere application server.
• Installation, configuration, and maintenance of web servers, application servers, and database servers on Linux Servers.
• Scheduled various regular, periodic, future and queue tasks by using crontab.
• NFS management - take care of user accounts/groups, setting up of NFS environment.
• Transferring files from one system to other using FTP and SFTP.
• Monitoring server performance and troubleshooting server related problems to SNMP.
• Processes administration and management like monitoring, start/stop/kill various processes/sub processes.
• Monitor system performance parameters using iostat, vmstat, and fine-tuning.
• Systems administration, maintenance, and monitoring various day-to-day operations.
• Creating and maintaining user accounts, profiles, and security rights.
• Installation/upgrade, system startup, and system shutdown as needed.
• Wrote simple bash scripts to ping the servers and add users to the boxes.
• Resolved system errors and crashes, disk space problems, huge file sizes, and file system full errors.
• Documented various regular administrative tasks and backup procedures.

Environment: Red Hat Enterprise Linux, Shell Scripting, Apache, Web Logic, Web Sphere.