SUMMARY:

• Systems Administrator experienced in Installation, Administration, Configuration and support of LAN/WAN networks on multi platforms like Red Hat 5,6 and 7, SUSE 10 &11, CentOS 7, Solaris 9 & 10 and Windows environments.
• Strong hands on experience in installing, upgrading and configuring Red Hat Linux 5.x, 6.x and 7 using kickstart Servers and Interactive Installation. Used server build tools like Qumulus and vSphere for automation.
• Worked with Database administrators to tune kernel for Oracle installations and also to build mongoDB as well as Oracle RAC servers.
• Extensive experience in managing volumes/file systems using Logical Volume Manager (LVM) and also configured volumes/file systems through network using NFS, NAS, SAN methodologies, installed and configured RAID devices.
• Good knowledge in working with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment.
• Expertise in Backup Management and Capacity management of mixed storage system environment.
• Experienced in configuring RAID0, RAID1 (mirroring) and RAID5 for data redundancy using Veritas Volume Manager and Veritas File System.
• Experience in creating and managing user accounts, security, disk space and process monitoring in Red Hat Linux.
• Ability to think outside the box for solutions.
• Good organization skills to balance and prioritize work.
• Excellent interpersonal and communications skills.
• Strong hands on experience in Installing and configuring Firewalld (new dynamic firewall provided with Redhat 7).
• Proficient in Installation, configuration and administration of systems monitoring products (Patrol, Nagios and Check MK).
• Extensive experience on managing logical volumes with LVM on RHEL7/CentOS7 and extend the existing logical volumes.
• Installation and configuration of Puppet agents across different environments.
• Write Puppet manifests for deploying, configuring, metric collection and monitoring.
• Experience working with Vblock Infrastructure to perform Virtualization using VMWare ESX 3.5, vSphere 4.0 on RHEL servers.
• Experienced in Backup management and managing storage. Proficient in setting up all kinds of incremental backups depending upon the real time situation of the servers.
• Experienced in Installing Firmware upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Proficient in performing system upgrades, installing layered products, analyzing and troubleshooting complex production systems.
• Experience in network administration, deploying and troubleshooting of DNS, LDAP, NIS, NFS, Network Interfaces and DHCP.
• Strong technical background and experience in Storage, Disk Management, Logical Volume Management (LVM) and logical partitioning.
• Professional Knowledge of networking (TCP/IP, Ethernet), NIS, DNS, NFS, DHCP, SMTP and RAID.
• Used Puppet to manage Web Applications, Configuration Files, Data Base, Commands, Users Mount points, and packages.
• Experience in Installing and configuring web hosting administration such as FTP, SSH, Telnet, and HTTP.
• Experienced in installation of Puppet Master and Client and their configurations.
• Experienced in installation and configuration of SAMBA.
• Experienced in troubleshooting and resolving network issues related to the servers.
• Worked on Grub, PXE boot, Kickstart, Packages, Yum, RPMs, LVM, file system configuration.
• Managed Network monitoring tool - Nagios and security through IP tables.
• Experienced in configuring firewalls using Linux.

TECHNICAL SKILLS:

Operating Systems: RedHat Linux 5/6 and7, SUSE 10 &11, Windows Servers 2000/2003/2008.

Software: VERITAS Volume Manager, VERITAS Cluster Service (VCS), HP Service Manager, SSL, JIRA, vmware vRealize, VMware vRealize Configuration Manager (VCM).

Hardware: HP Proliant DL360G8, DL380G8, DL385 and DL560 DELL Poweredge 1750, 1850, 2850, R630, R730, R730XD

Web Technologies & Databases: Tomcat, APACHE 2.x, Web Logic (11 & 12) & Web Sphere 8/9, SQL, MySQL, MongoDB, Oracle.

Network Protocols: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP.

Programming Languages: C, SQL, XML, Ruby, Python, Perl, Bash Scripting, HTML

Backup Management: COMMVAULT, Veritas Netbackup 4.5, 5

File System: VxFS, UFS, Ext, Ext2, Ext3, Ext4, ZFS, XFS.

Monitoring Tools: Patrol, Check mk, Nagios.

Configuration Management tools: Puppet, Ansible and Chef

PROFESSIONAL EXPERIENCE:

Confidential, PA

Systems Administrator / Associate Systems Engineer

Responsibilities:

• Full range of system administration duties including security patching and troubleshooting
• Participation on new projects and maintaining existing Linux / AIX systems.
• Setup, customization, configuring, troubleshooting and maintaining new and existing Linux and Unix (AIX) infrastructure.
• Building new servers in all the environments, configure file systems and install all the required tools and applications.
• Working with Puppet scripts to get the newly built severs added to the environment and set up the server as per the company standards.
• Built, installed, and tested Linux and VMware servers based on requirements from Design and architecture or established standards.
• Working on vSphere Client to connect to ESXi server and perform management tasks.
• Worked with other team members during change control activities to ensure smooth migrations and implementations, including performing change tasks.
• Providing user accesses and working on File ownership and permissions.
• Working with Puppet scripts to get the new severs added to the environment.
• Worked on various modules and manifests in Puppet to manage client configurations
• Maintaining system documentation.
• Tuning system performance.
• Validating and implementing critical system patches.
• Manage systems via Red Hat Satellite Server.
• Monitor and correct issues involving, disk, memory, and CPU.
• Support ad hoc requests from development teams.
• Strong knowledge of Linux /AIX operating system including scripting, deployment automation, and general system administration.
• Strong knowledge of networking and networking protocols.
• Strong knowledge of virtual environments.
• Strong knowledge of Satellite for RHEL patching.
• Ability to solve problems quickly and automate processes.
• Ability to quickly find solutions to unfamiliar problems (research skills).
• In depth Knowledge of security practices (PCI-DSS).
• Ability to follow change controls and security procedures.
• Analytical and problem solving skills to troubleshoot system problems.
• Ability to work independently and as part of a team.

Environment: RHEL v5,v6,v7; CentOS 4/5; VMWare ESXi; SAN (NetApp, EMC), Tomcat, Apache, Oracle, MySQL, Postfix, Puppet, Netbackup, OEM, Nagios, SVN, Shell Scripting, COMMVAULT, Patrol, Splunk, vCM, Puppet, Qumulus, Nexpose.

Confidential, FL

Systems Admin

Responsibilities:

• Installation, configuration, performance turning, and troubleshooting of storage environments and products in a mid-sized SaaS environment .
• Automated configuration and deployment of Linux and Windows machines using Puppet.
• Used Puppet to manage Web Applications, Config Files, Data Base, Commands, Users Mount Points, and Packages.
• Capacity management of mixed storage system environment .
• Installation, configuration, performance turning, and troubleshooting of Linux environments and products .
• Define, develop, and manage Linux and Windows OS images for use in a VMware environment .
• Worked on creation of puppet manifest files to install tomcat instances and to manage configuration files for multiple applications.
• Document system environments and the development of operational support guidelines and reference material.
• Support Java based solutions in a Linux environment .
• Work closely with information security personnel to identify and resolve security concerns .
• Management and operations of a data center environment , server provisioning, monitoring, performance analysis, network configuration and management .
• Create detailed specifications for redundancy, failover, and disaster recovery need to be planned and implemented .
• Installed and configured monitoring and management tools from Dell - OMSA(Open Management Server Administrator) and OME (Open Manage Essentials).
• Solution design, resource provisioning, system verification, and delivery.
• Support of 3-tiered 24/7/365 high-availability SaaS environments including 24/7 on-call rotation .
• Configuration and maintenance of common applications such as Apache, MySQL, NFS, NTP, SSH, DNS, and SNMP .
• Installation and configuration of Puppet agents across different environments.
• Write Puppet manifests for deploying, configuring, metric collection and monitoring.
• Experience in Puppet Master and Client installation and configuration.
• Configure and troubleshooting issues with NFS, CIFS, and iSCSI storage mounts.
• Middle-Tier administration as well as application support and deployment .
• Self-guided triage and follow-through skills to best respond to assigned duties .
• Apache HTTP server .
• Large-scale backup solutions and storage technologies .
• Linux administration of 500+ servers on enterprise level .
• Created various modules and manifests in Puppet to manage client configurations.
• Administration of virtualized infrastructure for non-production/production environments .
• Configuration management tool for environment buildouts (i.e. Cobbler, Kickstart, Satellite, Puppet, Cfengine) .
• Installation, configuration and administration of systems monitoring products (i.e. Nagios and Check MK) .
• Automation of tools for monitoring, process and documentations .
• SAMBA, DNS, scripting experience to automate administrative tasks .
• Sendmail, Postfix , Apache Tomcat, BIND, MySQL, Subversion (SVN) .
• System security techniques and best practices.
• Regular working hours with scheduled nights and weekends .
• On-call support rotation for after-hours support .

Environment: RHEL v5,v6,v7; CentOS 4/5; VMWare ESXi; SAN (NetApp, EMC), F5, Tomcat, Apache, Oracle, OME, OMSA, MySQL, BIND, Postfix, Puppet, Netbackup, OEM, Nagios, SVN, GIT, Shell Scripting .

Confidential, CARBONDALE.

GRADUATE RESEARCH ASSISTANT

Responsibilities:

• Installed, upgraded and configured RHEL 4.x and Sun Solaris 10/9.0/8.0 using Kickstart, Jumpstart Installation respectively.
• Upgraded Solaris 8 to 9 and 9 to 10 on Sun servers and workstations. Added necessary patches using patchadd utility and scripts.
• Configuration and administration of DNS, LDAP, NFS, NIS and Samba in RedHat Linux, and Sun Solaris.
• Network trouble shooting using traceroute, netstat, nmap and ifconfig .
• Involved in Configuring DHCP server and giving IP addressing dynamically. FTP Server configuration in Linux.
• Communicating with hardware/Network/Storage team for ticket handling.
• Supporting 24/7 environment.
• Incident management - Handling the tickets escalated by 1st level. Finding the root cause for the events and escalating to problem management.
• High level escalations - to level 3 and availability management. Taking remote login to the servers by using ssh and telnet through putty for troubleshooting.
• Daily health checking of servers for critical errors.
• Managing Logical volumes with LVM.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• NFS Management - Take care of user accounts/groups, setting up of NFS Environment.
• Software package/patch Administration involving adding software packages/patches and deleting software packages in Sun Solaris.

Environment: Linux(RHEL 4,5), LVM, Jumpstart, Symantec Netbackup, Nagios, SVN .