SUMMARY

• Driven and engage individual who is ready to welcome new challenges. Always craving to learn the latest technologies.
• Expertise working for 5 years as a Linux System Administrator and Engineer.
• Looking for opportunities to learn and deploy new technologies.
• Well organized with strong problem - solving approach and good communication skill as well as ability to work in team and independently.

TECHNICAL SKILLS

Operating systems: RHEL (5,6,7), Centos (5,6,7), Ubuntu, Oracle Linux, SUSE, Fedora, Windows 10, Windows Servers.

Virtualization: (VMware, ESXI 5.5, 6.0, & 6.5, V-centers and data stores, Break/Fix, Provisioning & Decommission, Patching, Migrations, KVM, Xen, HyerV, Docker, Kubernetes.

Scripting: scripts using Bash and Playbooks in Ansible, modify and adding puppet manifest, python, Shell, YAML

Networking: TCPdump, Wireshark, Firewalls, NIC Bonding, IPtables, Traceroute, Nmap, Tellnet, Selinux, iftop.

Cloud: AWS (IAM, EC2, S3, EBS), AZURE.

Installation and Configuration: Apache Web server, PXE- servers, Yum repository, NIS, NFS, DNS, DHCP, IDM, LDAP, PKI, Kerberos servers and GITHUB.

Hardware: HP (ProLiant DL 360 G9), DELL (PowerEdge)

Automation: Red Hat Satellite, BladeLogic, Puppet and Ansible.

Storage: NetApp, SAN, NAS, Equalogic, Hitachi, LVM, VxFS, Storage foundation, and Datastores.

Clusters: VCS, Redhat Cluster, HA, Windows Clustering.

Incident Management tools: Jira, Service now and RT.

PROFESSIONAL EXPERIENCE

Linux System Administrator/Engineer

Confidential, Bentonville, AR

Responsibilities:

• Utilized Python to handle debugging and automation scripting tasks.
• Planned, implemented and integrated updated system-oriented projects.
• Built and oversaw network infrastructure comprised of various virtual products.
• Administered application stacks and executed performance tuning.
• Provided status updates to those affected when issues came up.
• Perform daily administrative task on Linux servers depending on the tickets.
• Configure and manage AWS infrastructure.
• Building and Configuring Redhat/CentOS servers as per client request.
• Administration of VMware, Vcenter, Vsphere.
• Resolving issues with OS installs. Deploying kick start file to accommodate automated installs.
• Securing Linux Servers by tweaking firewall (iptables), enabling only needed services and chkconfig off unnecessary services.
• Setting up directory shares through Windows Servers as well as Linux NFS servers and configuring clients (/etc/exports, /etc/fstab ).
• Upgrading packages on Linux ( rpm, yum ) and patching systems to maintain the productive environment.
• Setting up NIS domains, which involves configuring servers and client roles.
• Responsible for monitoring Infrastructure health using Nagios XI. Adding hosts to the Nagios server for monitoring. Monitoring health of Network and analyzing Network Traffic using SolariWinds NTA / NPA. Responding to alerts generated by Nagios and SolarWinds.
• Performing bare metal to VM conversions.
• Attaching / adding Iscsi storage to ESXi hosts.
• Cloning VMs and taking snap shots as recovery point.
• Write ansible playbooks to automate tasks.
• Clouds: Amazon Web Services (EC2, S3, IAM, EBS and other services).
• Maintain and support AIX servers, patching through bladlogic.
• Created and supported Vms on IBM PowerVM platform
• Supported appache web servers, Oracle weblogic servers and tomcat servers
• Supported Debian based GlusterFS storage cluster. Worked with Ubuntu flavor of linux.
• Design and implement the entire management stack for managing MxSP on KVM.
• Build management stack that enabled packaging, installation, configuration and patching MxSP upgrade.
• VM management, VM high availability, policy management, data services, reporting, cluster mangment, VM backup and recovery policy.
• Handled troubleshooting tasks related to the components for Local Area Networks, Wide Area Networks and voice systems.
• Configured, tested, and managed software installations.
• Implemented network security improvements to resolve vulnerabilities.

Linux Administrator

Confidential, Vienna, VA

Responsibilities:

• Lead Linux systems architecture and implementation, administration of server infrastructure consisting of 100+ servers. Both physical and virtualized servers running VMware ESXi.
• User management: creating, modifying, closing and propagating maps to NIS clients.
• Troubleshooting and maintaining of TCP/IP, Apache HTTP/S, SMTP, and DNS applications.
• Monitoring server and network infrastructure using Nagios.
• Provisioning servers, installation and configuration, post-build monitoring and troubleshooting.
• Ensured the streamlined operation of the IT infrastructure in alignment with the business objectives of the organization.
• Monitor the availability and health of the infrastructure and applications across multiple data centers.
• Linux administrator for RedHat systems (Systems resources: disk space, memory, CPU load)
• Identify possible issues, troubleshoot, and escalate to the appropriate technical team.
• Setup DHCP,T FTP servers for PXE booting process.
• Building servers (NFS, Automount, NIS, PXE server, File Servers, DNS, DHCP, Net Backup and Printer servers).
• Upgrading packages and patching systems to maintain the productive environment using rpm and yum.
• Used puppet Master to keep in sync configuration on hosts running agents.
• Setting up directory shares with NFS servers, and configuring clients as NFS clients, setting up automounts for home directories in different domains.
• Ensuring backup of all the servers and clients using Veritas net backup software, restoring data in the event of emergency.
• Compiling new kernels, creating and modifying scripts (mainly bash) to accommodate the administration of daily duties.
• Monitoring server and network infrastructure using Nagios and MRTG.
• Scanning Vulnerable hosts on the subnets and fixing vulnerabilities resulting in improved and secure networks using McAfee Found Stone.
• Expert levels Linux (RHEL / CentOS) support experience.
• Building and maintaining Domain Servers — Exchange, SMS, Active Directory, VMware, and printer servers.
• Issues related to login, performance, virus removal, adding machines to domains, granting proper permissions and applying domain group policies domain wide.
• Responsible for patch management and server maintained on Windows side.