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Linux System Administrator Resume

SUMMARY:

  • Over 8 years of experience and specialization in System Administration working in RedHat Linux,
  • Experience in Installation, Configuration, Maintenance of Linux
  • Experience upgrading and configuring RedHat Linux 5.x, 6.x, 7.x using
  • Kickstart Servers and Interactive Installation.
  • Experience working on P550, P560, P595, P570, P575.P595.P770.P870
  • Migration of AIX OS from 5.1, 5.2 to 5.3 and 5.3 to 6.1, 6.1 to 7.1, 71 to 7.2 on pSeries servers.
  • Experience working Red Hat GFS and VERITAS Cluster File systems
  • Troubleshooting of Veritas Volume manager and Sun solaris manager.
  • Worked as AIX System Admin with IBM P - series Model servers in an HACMP environment.
  • Worked with Database Administrator to tune kernel for Oracle installations.
  • Experience in Creation and managing user accounts, security, rights. Disk space and process monitoring in RedHat Linux *Experience in configuration of NFS.
  • DNS, remote access management and security troubleshooting skills.
  • Experience in administering VMware Infrastructure Client 3.5 Vsphere 4.0, 5.x
  • & 6.0 and Pxeboot -Experience in administering RedHat Enterprise Virtual
  • Environment (RHEV)
  • Experience in scheduling jobs and administrative task using crontab. -Creating
  • Linux Virtual Machines using VMware Center.
  • Strong written and oral communication skills-Leadership Skills-Excellent

TECHNICAL SKILLS:

Platforms: Red Hat (RHEL 5, 6 and 7). CentOS 6 and 7 X86/X64 platforms, Windows 2003, 2008,2012, Server, Windows 7, VMware 5, 6, KVM

Hardware: Dell PowerEdge R710, R420, M91, R520, DL, 360,380

Languages: Bash, Perl, HTML Ruby

Software: VMware, LDAP, Active Directory, Networker, BMC Remedy 7, Symantec NetBackup, VPN, MySQL Database, Apache, SMTP

EXPERIENCE:

Linux System Administrator

Confidential

Responsibilities:

  • Expert in Installation and Configuration of Linux server and management
  • Expertise in establishment and configuration of Linux server and virtual environments
  • Installed and configure Networker Backup. Indexing and scanning of tapes for backup
  • Experience designing, implementing, maintaining and optimizing Disk Management utility,
  • Configure and maintain user authentication using LDAP
  • Performing needs assessment and patch management for Linux Enterprise Systems.
  • Infrastructure hardening and Security Administration & Installation on multiple Systems
  • Working knowledge with shell scripting using Bourne Again Shell (BASH) In-depth knowledge of Network, DNS, NFS, DHCP, NFS, FTP
  • Installed and configured Symantec VERITAS NetBackup master, media and client Servers.
  • Provide the needs assessment, Systems administration and patch management
  • Perform security management using Stateful and Stateless firewall (Security group and ACL)
  • Working knowledge with SAN, NAS (Disk Array RAID)
  • Experience using YUM and RPM for package management
  • RHEL virtualization with Kernel-based Virtual Machine (KVM)
  • Virtualization (VMware, Xen, Hypervisor)
  • Exposure to security concepts / best practices
  • Experience managing full application stacks from the OS up through custom applications
  • Troubleshooting user logins using various remote login utilities. Proficient in troubleshooting Systems.

Linux System Administrator

Confidential, Baltimore, MD

Responsibilities:

  • Designs Amazon Web Services architecture for new cloud computing System or existing Systems migrating to cloud architectures.
  • Expert in provision of EC2, S3, Glacier, Route53, VPC, and SecurityGroups
  • Expertise in establishment and configuration of Linux server and virtual environments
  • Provide the needs assessment, Systems administration and patch management
  • Perform security management using Stateful and Stateless firewall (Security groups and ACL)
  • Automate managing of System using Ansible.
  • Migration of AIX Systems from p4, p5 to p6, p6 to p7, p7 to p8 hardware.
  • Experience working in both virtualized and cloud environments across technologies such as Hyper-V, VMWare and AWS
  • Experience designing, maintaining and optimizing AWS S3 and Disk Management utility LVM.
  • Infrastructure hardening and Security Administration & Installation on multiple Systems
  • Provide deployment for scalable applications to container based technologies such as Docker
  • Perform integration of new Systems into enterprise environments.
  • Querying and modifying items in directory service providers like Active Directory and LDAP environments.
  • Automation experience using languages such as Python or Bash shell.
  • Possessed oral and written communication skills with a keen sense of customer service.
  • Expert in problem solving and troubleshooting skills.
  • Working knowledge with shell scripting using Bourne Again Shell (BASH)
  • In-depth knowledge of Network protocols and security, DNS, NFS, DHCP, NFS, FTP.
  • Working knowledge with SAN, NAS (Disk Array RAID)
  • Experience using YUM and RPM for package management
  • Experience managing full application stacks from the OS up through custom applications
  • Troubleshooting user logins using various remote login utilities.
  • Monitored client disk quotas & disk space usage. Systems performance monitoring and tuning.
  • Creating and Updating of the department's Standard of Operation (SOP).

Linux System Administrator

Confidential, New Orleans, LA

Responsibilities:

  • Installation and Configuration of Red Hat Linux
  • Configuration and maintenance of LVM
  • Experience in Redhat package management (rpm) and YUM installations.
  • Installing and configuration of Apache.
  • Creating and Managing of User Accounts, Groups and Permissions
  • Knowledge in Monitoring and Performance tuning of RHEL Servers.
  • File compression and decompression such as tar, gzip, etc.
  • Installing and Configuration of trusted connections in SSH
  • Extensively worked on configuring of NFS, Auto mounts, FTP Server
  • Knowledge to configure LDAP.
  • Knowledge in LVM and SWAP.
  • User management & Privilege issue.
  • Monitoring CPU, Memory, I/O Subsystems, and network utilization.
  • Providing remote access utilities and configuring various services.
  • Configuration and process troubleshooting of various application such as web applications, server -client applications.
  • Monitoring CPU, Memory, Disk.
  • Manage Disk and File System.
  • Installation and configuration of Linux operating System.
  • Process administration and management like monitoring, start/stop/kill in various processes.
  • Managing ACL's& special file permissions, Creating File System,
  • Configuring SAMBA and accessing windows share using SAMBA.
  • Installation and Configuration of ISCSI Target and initiator.
  • Installation and Configuration of SSH, FTP.
  • Linux kick start installation and Network Installation (NFS, FTP, and HTTP).
  • Configuring DHCP on client machines.
  • Provisioning and configuring of RHEL 6&7.
  • Deploying configuration of NFS, SAMBA, and AutoFS (NIS & DNS) Servers.
  • Install, update and upgrade the packages using rpm, YUM Package managements.
  • Installation and configurations of Apache Web Server in RHEL.
  • Configuration of Remote Access utilities, providing user access control on services like ftp, SSH and port status with telnet, NC.
  • Monitoring the Servers performance and health checkup.
  • Scheduling the Cron jobs and Basic knowledge on RYSLOG, NTP and LDAP.
  • Knowledge on DevOps concepts such as version control System using GIT, continuous integration using Jenkins, continuous deployment using puppet.
  • Knowledge on containerizations like Docker.
  • Knowledge on monitoring tools like Nagios.
  • Basic knowledge on creating and maintaining Database.
  • Responsible for creating, modifying and deleting users, groups and assigning the permissions to users and groups.
  • Handling and response to the mails, such as providing information to users.
  • Monitoring Systems resources, logs, disk usage, scheduling and monitoring backups and restore.
  • According to the SLA and ticket severity, providing permanent/ temporary solution to the requestor.
  • Troubleshooting the errors and remediate them on time.

Linux/Unix System Administrator

Confidential, Hagerstown, MD

Responsibilities:

  • Responsible for day to day operations of company infrastructure
  • Installing and configuring servers creating and maintaining user accounts and groups
  • Backing up user’s data
  • Worked as AIX System Admin with IBM P-series Model servers in an HACMP environment.
  • Experience with Red Hat build methodologies, performance tuning, memory management, server maintenance and troubleshooting
  • Wrote shell scripts and troubleshoot scripts for installation and automation
  • Used Ansible as Configuration Management tool to automate repetitive tasks (maintenance & software updates)
  • Logical Volume Management (LVM) of AIX.
  • Transfer file across the Systems on the network using FTP, SCP, WinSCP and Rsync commands
  • Setup and configured Apache in Redhat servers
  • Configure FIREWALL rules and hardening Linux Systems for Systems security
  • Configuring and Administrating Cron Jobs
  • Configured logical volumes for file System growth needs using LVM commands
  • Maintained availability, increased capacity & performance of production machines
  • Created new slices, mounted new file Systems and un-mounted file System
  • Configured Nagios monitoring tools, maintaining and monitoring 4000+ System located in four different sites

Environment: RHEL 6/7, Windows 2008/2012 servers, SQL, Ansible, VMware ESXi, JIRA, GIT, Apache, Shell Scripting.

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