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Linux System Admin Resume

Cincinnati, OH

SUMMARY

  • A Linux Admin with over 5 years of experience in administration of Linux operating systems and storage infrastructure supporting a mission - critical environment on developments, testing, and production servers.
  • Experienced in implementing and supporting full life cycle of Linux based servers from provisioning, patching, application deployment and troubleshooting OS related issues
  • Expertise in using automated tools for configuration purposes such as Ansible.
  • Installed, configured, maintained Linux systems and LINUX Servers (MySQL, NFS, DNS, DHCP, FTP, VSFTPD, HTTP, HTTPS, APACHE, SAMBA, PXE BOOT)
  • Have experienced working in the RedHat Enterprise and Oracle Enterprise Linux servers and Migrating from older Versions to the Newer version of Linux.
  • Expertise in writing scripts in Bash for the Monitoring purposes and enhancing the existing script to show efficient information so the issues can be resolved before making problems.
  • Expertise in setting up an Inventory system for the Linux servers in Excel to make it available offline in case of power outage.
  • Responded to all LINUX systems problems 24x7 as a part of an on-call rotation and resolving issues promptly.
  • Install Red Hat Enterprise Linux using scalable methods red hat satellite, yum and configuration manager.
  • Preparation and execution of server patching and upgrade on Red Hat Linux servers
  • Some experience with container orchestration tools like Kubernetes and Docker
  • Handled networking with LAN, WAN, Routers, Gateway.
  • Configuration Management in Linux RHEL 5, RHEL 6 and RHEL 7 to secure command-line service on remote systems, using Open SSH and configured various services such as DNS, HTTP, HTTPS, SMTP, FTP, and apache and PXE boot, Kickstart.
  • Installed Red Hat Enterprise Linux using scalable methods red hat satellite, yum and configuration manager.
  • Prior experience/ expertise with Networking configuration of IP tables, TCP/IP/UDP.

TECHNICAL SKILLS

Operating Systems: Red Hat Enterprise Linux 6 and 7, CentOS 6 and 7

Virtualization Tools: VMware, vCenter, vSphere

Configuration and Management: NFS, DNS, DHCP, FTP, VSFTPD, HTTP, HTTPS, APACHE, SAMBAPXE BOOT, KICKSTART, and MySQL

User authentication: Active Directory, Windows server 2012, Centrify

Hardware Troubleshooting: Rack and Stack, build servers, ILO, iDRAC, KVM. RAID

Disk Storage Management: SAN, NAS, iSCSI, RAID, LVM, XFS, EXT4

Environment: tools: Kubernetes, Docker, Ansible, BashAmazon Web Services AWS, IAM, EC2, S3, Cloud formation, EBS, ELB, RDS, VPC

Productivity Tools: Office 365, Outlook, Skype, Team viewer, Google hangouts

PROFESSIONAL EXPERIENCE

Confidential, Cincinnati, OH

Linux System Admin

Responsibilities:

  • Responsible for design, build, deployment, patching and upgrade of Linux. Design, Build and configuration of RHEL.
  • Administered Linux servers Linux (RHEL 6/7), for several functions including managing Apache, mail server, and firewalls in both development and production.
  • Install and configure hardware and Linux OS to all servers in the network per specifications of clients.
  • Responsible for providing 24x7 production support for Linux production systems using BMC remedy tool.
  • Wrote Ansible Playbooks for VG, LV and filesytem creation, identify disk and start software on Redhat servers.
  • Prototype, test and configure Ansible Server management systems to manage Redhat servers for software installs and upgrades.
  • Implementation of Nagios monitoring server, Configure Clients & Alerts as per server owners request, respond to the alerts generated by Nagios such as Network and Application availability.
  • Installation and up-gradation of the operating system (RHEL,Ubuntu) and other applications.
  • Performed OS upgrades, migrations on Redhat.
  • Worked on Ansible for configuring and maintaining development, test and production and RCA in support of operations for various service requests and incidents.
  • Installation of software on multiple platforms using Ansible.
  • Managed VMware infrastructure (ESXi, Virtual center).
  • Provision PXE Server with kick start to automate Linux OS installation process.
  • Involved in virtualization with VMWare ESX vSphere 5.6 and created VM's.
  • Migrated Linux virtual machines from one vCenter to another using vConverter.
  • Performed data-center operations including rack mounting and cabling.
  • Tech and non-tech refresh of Linux servers which includes new hardware, OS upgrade, application installation, and testing.
  • Upgraded firmware on HP, DELL, and IBM blade servers running Linux.
  • Configured LVM, NFS, Web Server, Samba server, DHCP server, NAT, Primary Secondary and cache-only DNS server. Administered mail servers.
  • Migrated applications to the AWS cloud.
  • Developed and managed cloud VMs with AWS EC2 command line clients and management console.

Confidential, MALTA, NY

Linux Analyst

Responsibilities:

  • Analyze technical issues as well as faults with the OS configuration or the hardware.
  • Discover and repair misconfigurations and other issues created by customers, or third party systems administrators.
  • Analyze customer servers to provide guidance for their systems administrators\ Disk administration, Creating File systems, mounting / Un-mounting file systems. Setting up the file and Directory Permissions.
  • Installation and configuration of Yum and Rpm Packages.
  • Implemented NFS and DNS Linux.
  • Administrative tasks such as System Startup/shutdown, Backup strategy, User Management, Security, Network management and devices carried out.
  • Write bash shell scripts for getting information about various Linux servers.
  • Performed the administration of the DNS Server and configuration of the Database Files.
  • Monitor overall system performance, performed user management, system updates and disk & storage management.
  • Responsible for handling networking issues with LAN, WAN, Routers, Gateway.

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