SUMMARY

• Over 6 plus Years of experience in heterogeneous and complex Cloud/IT environments.
• Extensive experience with RAID using Volume Management Software like Logical Volume Manager, Veritas Volume Manager, Solaris Volume Manager.
• Experienced in Installation of Operating Systems, Packages and Patches, adding peripherals, maintaining user accounts, System Security maintenance, backup/recovery, performance tuning, troubleshooting at various levels etc.
• Experience on group and user access management. Hands on SUID, SGID, Sticky Bit, ACL.
• Extensive experience with Kickstart in Redhat Linux, Jumpstart in Solaris, Ignite in HP - UX.
• Expertise in implementation and maintenance of NFS, NIS, DNS, LDAP name services.
• Experienced in Linux / UNIX System Administration of REDHAT Linux 3, 4.0, 5.0, 6.x, 7.1(ES, AS & WS).
• Strong knowledge of large-scale Linux server deployment methods, kernel compilation and configuration, performance monitoring and tuning.
• Excellent knowledge of load balancing and clustering techniques to ensure high availability.
• Excellent Virtualization experience with VMWare Technologies in an operational environment.
• Hands-on experience with VCS, Veritas Net Backup, Veritas Volume Manager.
• Hands-on experience with IBM Power Series, HP, SUN blade and rack servers.
• Strong knowledge of client/server services like NFS, NIS, DNS, DHCP, SMTP, POP3, HTTP/HTTPS, SSH, LDAP etc.
• Excellent experience in Firewall management, hardening OS security, scheduling job using Cron.
• Strong understanding of advance TCP/IP, UDP, IPv4, IPv4 subnetting, IPv6.
• Experienced with Oracle, MYSQL administration, performance tuning and troubleshooting issues.
• Experienced in updating server’s firmware (BIOS), updating packages and upgrading Linux distribution, applying security patch, kernel recompilation.
• Hands-on experience in diagnosing, troubleshooting various networking, hardware & Linux/ UNIX server’s services issues and performing preventive maintenance.
• Experience with Red Hat Kickstart or scripted OS installation methods.
• Extensive work knowledge on Storage Area Networks (SAN), of EMC Symmetrix, CLARiiON CX300 Storage Arrays and Dell EqualLogic storage.
• Worked with Virtualization, NIS, NFS, DHCP Server, Samba, and TCP/IP on Linux server environment and LDAP client-server model to retrieve and manipulate data.
• Experience on Linux based server solutions like Apache, Sendmail, FTP, DHCP, DNS/NIS, SAMBA, QMAIL and NFS with AUTOFS.

TECHNICAL SKILLS:

Operating Systems: Linux (RHEL, OEL), HP-UX, Solaris, AIX, MS Windows server 2000, 2003, 2008, 2012

Network Protocols: IPv4 + IPv6, Advance TCP/IP, SIP, DNS, DHCP, LDAP, FTP, VPN, VTP (VLAN), SNMP, SMTP.

Scripting Skills: Shell (BASH), Ruby, python

Database: MS SQL Server, PostgreSQL, Oracle

Virtualization: VMware, AWS

Clusters: Red Hat Cluster Suite, VCS

Monitoring Tool: Nagios, splunk

PROFESSIONAL EXPERIENCE:

Confidential, Atlanta, GA

Linux Engineer

Responsibilities:

• Installation, Upgrade and configuration of Linux Redhat 6.x & 7.1, Centos 6 and 7, AIX and Windows 2008, 2012 servers on HP, Dell, IBM and Cisco UCS Servers.
• Set up networks scripts and DNS in newly created operating systems.
• Upgraded kernel and also carried out kernel compiling procedure.
• Maintenance of user account in creating new users, groups and setup their home directories as per manager’s directives.
• Create files and folders and grant ACL permissions to users.
• Installed and configured VERITAS Volume Manager and VERITAS File System as needed.
• Resize or extend logical volume manager and Veritas Volume Manager solaris and linux severs.
• Configuration and administration of LDAP, NFS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Added agents to puppet server and created files, folders, installed packages using Ruby scripts.
• Responsible for setup, configuration, and troubleshooting of complex Linux environments.
• Setup kickstart server and build of Linux servers using kickstart server.
• Checked overall health of AIX, Redhat, Centos server and patcheds nessary updates.
• Worked extensively with Network File System (NFS) for storage, CIFS, SAMBA and FTP servers.
• Web Server and application server installation and configuration Apace, Tomcat, LAMP and JBOSS, Wildfly application server, weblogic.
• Grub password set up as a project of server hardening.
• Worked with Networking team for fault management and IP management systems.
• Servers patching manual as well as automation tools such as using BMC bladelogic tool.
• Worked closely with network team in Cisco networking infrastructure and troubleshoot networking issues.
• Conduct ongoing monitoring and maintenance to ensure stability and optimal performance on all server environments.
• Web Server and application server installation and configuration Apache, LAMP and weblogic application server.
• Worked with database team on Oracle, MYSQL administration, performance tuning and troubleshooting issues.
• Design, configuration and added clients to the nagios monitoring server.
• Carry out scheduled server maintenance and check overall health of servers.
• Installed and configured and administrated VMware ESXi 5.5 server.
• Monitored High Availability (HA) and Distributed Resource Scheduling (DRS) with VMWare team
• Created template of VM and deployed.

Confidential, New York, NY

Systems Administrator

Responsibilities:

• Installation, administration, configuration of RHEL 4/5 including package management, patch management, regular system administration tasks.
• Build, rack and stack physical servers HP,Dell, IBM, Cisco UCS and administration.
• Installed Redhat Linux, UNIX AIX on bare metal servers and virtual machines using kickstart and hardening the servers.
• Creating and cloning virtual machines in VMware environment using Virtual Infrastructure client 3.5 and Vsphere 4.0.
• Creating logical volumes, extending the filesystems using both LVM and VxVM 4.1.
• Perform daily maintenance routines on Linux servers, monitoring system access, managing file space and tuning the system for optimum performance.
• Respond to all UNIX systems problems 24x7 as a part of on call rotation and resolving them on a timely basis.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Updated DNS configuration based on the new servers that are rolled out.
• Worked and performed data center operations including rack mounting, cabling.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Worked on various applications and improving their performance by performance tuning and analysis.
• Responsible for change management, troubleshooting and resolution of server issues for end users support.
• Installing and configuring Apache and supporting them on Linux production servers.
• Adding servers to the domain and monitoring them using nimsoft, cacti, sitescope.
• Assist System Administrators with various support issues.
• Writing shell scripts for Automated Back- ups and Cron Jobs.
• Tuning kernel parameters for optimum performance.
• Installed network file sharing utils cifs and samba.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Installing, Administering and troubleshooting Windows Server 2003, 2008,2012.

Confidential, North Brook, IL

Linux Administrator

Responsibilities:

• Install, configure, and maintain servers Dell, IBM, HP using enterprise standards and build process/
• Provide problem management support for the production site and services - troubleshoot technical problems as they arise, design and implement long term solutions.
• Performed Server design engineering, configuration and troubleshooting of all components, hardware and software, including large scale storage systems with 32 and 64 bit processors, Intel and AMD based
• Configured host-based and user-based security for the service using TCP wrappers.
• Providing administration and troubleshooting user related problems.
• Work closely with DBAs, software partners and Staff in a proactive and solution oriented manner.
• Maintaining RHEL 2.1/3, Redhat 6.0, SUSE 9 and 10 on Intel based servers.
• Patch Management, Package Installation/Upgrades and Kernel upgrades.
• Installation and Configuration of Web servers like Apache, Tomcat,jboss,weblogic.
• Used Webalizer for monitoring webserver logs.
• Wrote Scripts for system management and monitoring in Bash and Ksh.
• Configuration and deployment of Red Hat Linux as a Windows file server.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Software package and patch administration, involving adding and removing software packages and updating patches.
• Handled problems or requirements as per the ticket (Request Tracker) created.
• Configuration and administration of LDAP, NFS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Maintained proper documentation of all the activities carried out during the project