SUMMARY:

• Over 7+ years of experience as a Unix system engineer and administrator in complex high end server/client environment consisting multi - operating systems (with emphasis on Red Hat Linux and Solaris environment) in which my responsibilities include design, installation, configuration, maintenance, tuning and troubleshooting of servers running on Redhat enterprise Linux 6.x/5.x, Solaris 10, 11 and Windows servers.
• Expertise in Systems Administration, Data Center migration, Server Deployment and production support with automation and scripting.
• Worked with tools like Net cool, Nagios, Zabbix and Solar winds for performance monitoring and checking health status of the servers.
• Configuration of Cisco catalyst switches and racking of servers, networking and interfaces.
• Installation, configuration and management of LAMP (LINUX/Apache/MySQL/PHP) stacks.
• Specialized in Linux System Administration, Installation, Configuration of RHEL 4/5/6, CentOS 4/5/6 environments.
• Experience in using Shell scripts to automate log backups and daily tasks.
• Troubleshoot the issues at server level (Physical & Virtual VMware, Zones, LDOMs)
• Enterprise Systems Architecture, System Backups, Restore/Recovery, ESX and VERITAS Clustering and Load Balancing concepts.
• Experienced in using monitoring tools like Nagios, Splunk, ELK and Cacti.
• Performance and Capacity Planning to meet the growing requirements of the applications.
• Extensive working knowledge of mainframe Tools like TSO/ISPF, File AID, Xpediter, Abend AID, Syncsort, NDM, SPUFI, QMF, SSO and FTP, TCP/IP.
• Have good working experience with configuration tool Chef and Puppet.
• Proficient in Backup utilities, Restoring, Mirroring and Cloning.
• Installation and up gradation of Packages and Patches configuration management, version control, service pack. & reviewing connectivity issue regarding security problem.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Red hat Linux.
• Hazel cast, Cassandra or any other NoSQL, RDBMS.
• Proficient in System Software Installation, Configuration & Administration of NFS, NIS, DHCP, DNS, Apache and Samba server configuration and management.
• Experience in Network Troubleshooting, SAN, NAS connectivity issues and Server Hands-On for DELL R710, HP ProLiant DL-380 G4/G5, & DL-580 G6/G7.
• Excellent team-oriented worker and ability to quickly adopt and work under minimal supervision.

TECHNICAL SKILLS:

Operating System: Red Hat Enterprise Linux 6.x/5.x, Solaris 10, 11, HACMP 5.3/5.2, VMware ESX 3, 4, 5, Centos 4, 5, Ubuntu 11, 12.

Web Servers: Apache HTTP server 2.0.50/2.0.49/2.0.48, IBM HTTP web server 6.0.0.0, Web Logic 8.1, Web Sphere application 6.0/5.4/5.1

Virtual Environment: VMware virtual server, Zones, LDOMs

Hardware: HP ProLiant DL 580/380 (G8/G7/G6) DELL IDRAC (R710, R720, R910), M5000, T3, T5, Sun Fire V-880, IBM P/P5series (p795, p780, p690, p670, p510, p590).

Volume Management: Red hat LVM, VERITAS Volume Manager.

Scripting Languages: Shell scripts KSH, CSH, BASH, HTML and PERL.

Server Monitoring Tools: Service Now, HP Open view, Nagios.

Networking: NIS, NFS, DNS, SSH, CISCO Switches/Routers/Access Points and Firewalls.

Storage Devices: VVM 3.1/3.2, RAID Manager, NAS, SAN.

PROFESSIONAL EXPERIENCE:

Confidential, Irving, TX

Sr. LINUX/UNIX Engineer

Responsibilities:

• Installing, configuring and support RHEL 6.x/5.x
• Building the host using the Kick start and configuration of LVM and maintaining them.
• Excellent Knowledge of ITIL process for incident /change management.
• Done in place upgrades of Red hat servers from 5.10 to 6.5 via Yum repositories.
• Maintenance and Vulnerability Management of Hybrid infrastructure and CI/CD using Chef - Cookbooks.
• Used Redhat Satellite Server for updating packages at various locations of servers where it deployed.
• Migrated to Red hat satellite server 6 version.
• Shell scripting for job automation in korn and bash shells.
• Administered Linux servers for several functions including managing WebSphere, Apace/Tomcat server, mail server, MySQL database, SVN.
• In depth knowledge in Installing, Configuring and Troubleshooting Application Servers like BEA Web logic and IBM HTTP Server, Apache Webserver on Sun Solaris, Linux and AIX
• Utilized Nessus software to run vulnerability scans on TCP & UDP Ports to ensure system security
• Remote system administration via tools likes SSH and console access.
• Performed day-to-day administration tasks like User Management, Space Monitoring, Performance Monitoring and Tuning, alert log monitoring and backup monitoring.
• Provides accurate root cause analysis and comprehensive action plans. Works closely with HW/SW vendor support teams to resolve problems quickly.
• Installed VMware VSphere 5 and created virtual machines on ESX 5.0 Servers using Dell PowerEdge R410.
• Worked on maintenance of ESX host clusters and security.
• Strong communication skills are imperative, including assertiveness and taking ownership of issues and requests.
• Analyzed the VMCore dumps, system logs, data gathered from Splunk, VMWARE on day to day basis to troubleshoot the mission critical issues.
• Worked with variety of storage volume managers such as ZFS, LVM, SVM, VERITAS Volume Manager on backend EMC storage arrays
• Manage ITIL compliant Change control cases using BMC Remedy Help Desk.
• Performed scripting on Perl and shell for monitoring and scheduling the Jobs.
• Migration of LDAP and up gradation of RHEL 5 to RHEL6.
• Excellent hands on experience, in web servers such as Apache Tomcat, IIS, IBM HTTP Server and IPlanet.
• Extensively used LVM - created VGs, LVs & File systems.
• Implemented automations tools DevOps.
• Monitoring of web servers and other services using Nagios monitoring tool.
• Configuring and customizing various devices and parameters in Nagios Monitoring tool.
• Configuring the FTP, DHCP, DNS and troubleshooting them.
• Application readiness/OS checkpoint. Install & config oracle 10g and coordinating with the oracle team.
• Worked on homogeneous and cross-platform file sharing protocol such as FTP, Samba, NAS, and NFS for sending and receiving files between local and remote servers.
• Extensively worked with installing, configuring and managing the emerging monitoring services Zabbix, Nagios, on the Linux Infrastructure.
• Installing, configuring and maintaining apache, samba, Web Sphere & Web Logic Application Servers.
• Utilize Puppet for configuration management of hosted Instances with in AWS.
• Troubleshooting of VERITAS Volume manager and Sun Solaris manager.
• Review of UHG standard Solaris OS image and configuration standards.
• Installed the Teradata and Java patches and granted the privileges to the users.
• Setup LVM. Install OS packages and patches, break/fix support . System security management. Worked on OS upgrade plan for Solaris on development and production servers.
• Provide 24x7 supports on shift rotation basis.
• Resolved/closed incident tickets and documented issue and each step taken in order to resolve.
• System data in the “Splunk” monitoring tools. Also worked with the storage team to setup the “TSM Schedules” for all the servers and troubleshoot the issue if any of the servers was missing backup.

Environment: Insurance (auto, life and health), Red Hat Linux 6.x/5.x, Redhat Satellite Server, Dev-Ops, Hadoop, HP ProLiant: DL 580/380 (G8/G7), Azure, Puppet, ELK, DELL IDRAC: (R710, R720) X 3650. 2500+ Linux Servers, Zabbix, Web Sphere & Web Logic Application Servers.

Confidential, St. Louis, MO

UNIX Infrastructure Administrator

Responsibilities:

• Installation, configuration and administration of 200+ Red Hat Linux servers and support for Servers
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation
• Installed, configured and maintained HTTPD server for Intranet specifications
• Installation, Configuration and Troubleshooting of Linux and Windows Servers
• Provide Remote support for Linux and Windows Servers.
• Implemented Kerberos for authenticating all the services in Hadoop Cluster.
• Maintained system configuration files to handle high volume data
• Ensured and maintained the stability of POP, POP3, SMTP, Send mail & IMAP mail servers
• Upgrades of Red hat servers from 5.10 to 6.5, patching and Vulnerabities fixing.
• Installing and Configuring Red Hat Linux in VMWare Environment.
• Knowledge and understanding of effective trouble ticket tracking system use.
• Configuring, Implementing and Troubleshooting access lists.
• Installing & Configuring VPN clients.
• Implemented and administered VMware ESX 3.0, for running the Windows, Centos, SUSE and Red hat Linux Servers on development and test servers.
• Preparing and Installing Ghost Images according to the projects requirement.
• Performing Linux Kick Start installation, RAID & LVM Implementation.
• Configuring inner and outer view of DNS server to resolve internal & external queries
• Patching the ESX/ESXi hosts by using VMware Update Manager.
• Maintenance and operation services for the AS/400 servers and connectivity to mainframe and core interfaces.
• Configuring bind as a master DNS, caching-only name server, slave server and forwarding only name server.
• Configuring Samba, NFS and DHCP server in Linux & Windows.
• Configuring various Hardware level RAIDS on Dell Blade Server ( Power Edge 860 & 2850 series )
• Configuring FTP server and Apache Web Server on Red Hat Enterprise Linux
• Configuring Proxy Server (Squid) on Red Hat Enterprise Linux.
• Configuring and administering Send mail with dovecot package for IMAP & POP3.
• Updating & recompiling the kernel for our requirements.
• Preparing binary RPMs from the source code to suite our architectures.
• Configuring RHEL as Router by enabling IP forwarding.
• Use Linux rescue mode to correct the problems in file systems.
• Disk and File system management through RAC, VERITAS Volume Manager.
• Preparing the centralized log server for all Linux clients.
• Planning and setup of Disaster Recovery Servers.
• Preparing centralized installation server comprising FTP, Webserver and NFS

Environment: Red Hat Linux 6.x/5.x, NFS, VMware ESX 3.0, And Hardware: Dell Servers and Intel Boxes

Confidential, Naperville, IL

UNIX/LINUX Engineer

Responsibilities:

• Decommissioning of old hardware’s and migrating the application to the new hardware’s of P Series.
• Setup and configured network TCP/IP on AIX nodes including RPC connectivity for NFS. Created mount points for Server directories, and mounted these directories on the Servers.
• Performed IP networking Parallel System support Programs PSSP High availability Clusters.
• Patching and Upgrades Red hat servers from 5.10 to 6.5.
• Designed and built p-Squadron logical partitioning LPAR profile.
• Diagnosed and troubleshoot software and hardware related problems.
• Installed and deployed operating system and security related patches and fixes.
• Good knowledge of Hardware management console Confidential : update Confidential code, manage Confidential Users, Configure Network setting for Confidential . Managed Power5 p/i-squadrons 9117-570 using Hardware management console Confidential .
• Good working knowledge of installing, configuring, and upgrading Blade Center’s Management Module. Good knowledge of Installing and configuring Blade Center's Gigabyte Ethernet switches such as Cisco and Nortel for different subnets using VLAN ID'S.
• Good knowledge of applying online updates, patches & service pack's for Linux SuSE & RHEL.
• Developed Shell scripts for automating the batch jobs.
• Involved in Storage management, LVM, File system management, User account management, data backups and user’s logon support.
• Involved in testing of products and documentation of necessary changes required in this environment.

Environment: Networking (2500+ Linux instances, 200+ Linux Servers, Solaris Servers) UCS-Blade Center & Racks), ILO, KVM, RHEL 6,5, GPFS, VMware-VSphere, Oracle RAC, AIX 6.1/5.3, VIO 2.2.2.1, App Servers, IBM HTTP servers, TSM, Scripting (KSH, C-SH, and BASH), DB2 ESE, and Oracle 10g DBA

Confidential

UNIX Administrator

Responsibilities:

• Worked as Unix Administrator in IT infrastructure environment providing server administration, application administration and automation solutions to support business objectives
• Configured UNIX infrastructure, and supported RHEL (Linux) 3, 4, servers.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands. Maintained availability, increased capacity & performance of production machines by upgrading their hardware (disks, CPU, memory, IO board, power cooling unit, motherboard etc.) & firmware.
• Troubleshooting of all kind of OS related and hardware related issues on the Linux servers
• Performed process automation, scheduling of processes using CRON jobs.
• Created and configured logical partitions (LPAR) on IBM p690 systems.
• Designed & Implemented System Security administration policies. Systems security administration policies include: User ID/Group ID management, Password policies, password aging for Linux and Solaris Users.
• Managed file permissions & ownership for important directories & files.
• Implemented DNS, NFS, NIS, Auto mount networking services.
• Created logical partitioning LPAR and dynamic logical partitioning DLPAR defining virtualization on IBM P series servers using Confidential .
• Installed and configured Redhat Enterprise Linux AS 3.0/2.1 on Intel EM64T. Installed and configured NIS, DHCP, BIND (DNS) services. Performed file system tasks using LVM, RAID and swap space concept. Installed and configured NFS and SAMBA server. Also performed user administration in complex high end server environment.
• Installed, configured and administered Solaris 8, 9 with SunOS version 5.9/5.8 with I Planet Directory server, Resource manager, Solaris volume manager, Multipath I/O, IPMP and extended file attributes features.
• Performing data center migration by moving servers from different locations to central data center.

Environment: Software Development (100 plus UNIX Servers), SUN SPARC, Ultra, Linux 3, 4, Solaris 8, 9, Oracle, DB2, Testing, and Apache web server.