OBJECTIVE:

I am looking for a challenging and rewarding Linux based environment where I may utilize my experience and strong interpersonal skills. I am looking forward to an opportunity to work as a Linux Systems Administrator/Engineer as a team member.

SUMMARY:

• I have 5+ years of experience in systems administration in both Windows and RedHat Linux Environments including analyzing, installing, maintaining, and repairing hardware, software, peripherals, and networks in diverse heterogeneous environments. I have excellent troubleshooting and technical support skills with network connectivity, migrations, and security and database applications.
• Expert in Red Hat Linux 5/6/7
• IT experience in System Administration/Engineering on different Linux flavors i.e. Centos Linux, Red Hat, Ubuntu and Software configuration management
• Worked with HP Proliant Servers and Dell Servers and set different RAID levels as needed
• Experience with preparing Bare Metal machines by adding RAM and Hard Drives as well as Racking/Stacking of servers.
• Experience in Provisioning servers using PXEboot and Kickstart Process on multiple servers
• Applying patches, Security fixes and installation of packages on Linux and Windows Servers on both Physical and Virtual Environments.
• Expertise in Installation, Configuration, Integration, Tuning, Backup, Crash recovery, Upgrades, Patching, Monitoring System Performance, Network Security and Troubleshooting of Red Hat Linux Servers using Red Hat Satellite and Ansible
• Experience with troubleshooting/maintaining Hardware (Servers/Desktops)
• Experience with different storage devices such as SAN/NAS.
• Experience Performance/Kernel Tuning as needed especially for virtual memory(swap space)
• Proficient in VMWare Installation and monitoring Virtual environments with building ESXi hosts and administering using V - Center/VSphere
• Managing/Administrating ESXi 5.5 & 6.5 Hosts and Clusters on vCenter Server 6.5. Using vSphere Client 5. And web client 6.5 (HA and DRS)
• Deployment and System build configuration using Ansible and Puppet as well as monitoring and setting sensors using Nagios and PRTG
• Installing and upgrading software on Linux Systems (rpm/yum) using ansible.
• Experience using automation tools such as Ansible and Kaseya
• Working knowledge of backup tools (Netbackup)
• Experience in Logical Volume Manager for creation of Volume groups / Logical Volumes and File systems in a Linux environment.
• Creating, extending and shrinking of logical volumes using LVM for storage pools
• Experience in handling pacemaker Cluster Server during Fault Tolerance.
• Expertise in Installing, administering, troubleshooting NFS, DNS, DHCP, NIS, LDAP, Mail Server, Send Mail, Rsyslog and Samba Server. Experience in configuring LAMP stack.
• Experience in using various network protocols like SSH, SCP, SFTP, HTTP, UDP, FTP, TCP/IP and SMTP
• Wrote Bash scripts for day to day tasks such as Group/User administration, Startup & Shutdown Scripts, Crontabs, File System Maintenance, Backup Scripts, and Automation
• Experience in configuring, monitoring and troubleshooting various file systems like xfs, Ext 4, 3, 2.
• Experience in creating, installing, updating packages in Red Hat Linux servers using RPM's and YUM repositories
• Experience with GIT repositories for version controlling using push, pull, commit commands
• Worked extensively on Red Hat Linux DNS servers from installing BIND package, updating the BIND database and troubleshooting the problems.
• Experience with setting up RSyslog server to centralize log monitoring
• Experience with Cloud based services such as AWS, Citrix, Azure
• Experience with migrating OS/applications and on-premises data to AWS
• Writing and updating documents for teams use on troubleshooting, installing and configuring new technologies implemented in the environment.
• Wrote disaster recover Documentation and rollback plans
• Experience working with vendors for support Hardware support(HP and Dell) and software upgrade support(VMware)
• Centrally Managed Datacenters with RedHat Satellite and VCenter
• Experience with patching cables to a patch panel for both Voice and Data on dedicated switches and VLANs
• Experience of Network Infrastructure and fundamentals on Switching, Routing and VLAN configurations
• Experience with Active Directory, Group Policies, RDP, RDS, Citrix, SSL
• Experience in configuring and recovery procedures for Master and Client Backup Servers using Veeam and Mozy
• Proficient in Bash shell scripting.
• Excellent verbal and written communication skills with experience in direct internal and external customer relationship management
• Experience with process engineering, and change management in a complex environment
• Self-directed approach that illustrates excellent work ethic, produces high-quality results and demonstrates attention to detail
• Ability to learn and adapt to new and different technologies to a working depth quickly
• 24/7 customer support and service delivery experience

SKILL:

Operating System: Red hat Linux 5/6/7, CentOS Linux 6/7, Windows, MacOS X

Network: LAN / TCP/IP / UDP / DNS / HTTP / SSL / DHCP/ NTP / FTP

Languages: Bash Shell Scripting

Application Server: SSH, SFTP, Apache, Samba, NIS, NFS, Nagios, SQL(database), NetBackup

Automation: Puppet, Ansible, Bash scripting and Red Hat Satellite

Knowledge of: C++, SQL(Oracle), HTML/CSS, PowerShell

Cloud Technologies: AWS

WORK EXPERIENCE:

Confidential

Linux Systems Engineer

Responsibilities:

• As a Red Hat Enterprise Linux Engineer primary responsibility included building of new servers which included rack mounting, installation of OS, configuring of various OS-native and third-party tools, securing of OS, installation, configuration & job scheduling using cron
• Racking and Stacking of Servers and provisioning them using PXE boot installation
• Built servers, installed tools, configured and provisioned servers as per enterprise standards and enabled log, port monitoring of servers and applications.
• Configured PXE boot Kickstart script according to need to automate provisioning of a server
• Responsible for Installation, configuration, Maintenance, Deployments, Update, Monitoring, performance and kernel tuning on RedHat Linux 5.x, 6.x 7.x, using Kickstart Servers
• Configured Kernel Parameters for application and databases to meet organizational needs according to vendor reccomendations.
• Installed and configured Apache (HTTP and Tomcat) and MySQL on Linux (RHEL 6 and 7) for virtual and web hosting; building and hosting websites
• Confirmed disk partitioning
• Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux and CentOS
• User account management and administration with LDAP which included creation, deletion, permissions as well as adding them to proper security groups
• Experience with configuring/provisioning DNS, DHCP, PXE-boot, Kickstart, NFS, NIS with autofs, Apache Web Server, FTP Server and managing repository servers.
• Created and managed(extending/shrinking) Logical Volumes and File Systems on Red Hat Linux using LVM
• Configured a LAMP Stack on Red Hat 6/7
• Wrote and used Ansible inventories to define groups of hosts
• Used ansible for configuration management, application deployment, and provisioning as well as to automate daily tasks.
• Wrote Ansible Playbooks(YAML) to automate tasks on multiple servers and to manage the infrastructure
• Patched servers regularly using Ansible and RedHat Satellite
• Experience with Cloud-based services such as AWS
• Worked on with GIT repositories for version controlling
• Built and maintained cloud-based workstations, spun EC2 instances on AWS and connected workstations to LDAP
• Built/Configured Workspaces on AWS and synched them with LDAP
• Experience with migrating OS/applications to AWS using RSync or dd
• Prepared Hard Drives for use with logical volumes using fdisk/gdisk tools
• Administered and managed VMware infrastructure and environment. Responsible for upkeep and optimization on all ESXi hosts, Storage(SAN), virtual hardware versions, VMware tools and virtual machines.
• Worked with the storage team for Storage Allocation, Troubleshooting, Monitoring and Reporting on the SAN Environment.
• Wrote Bash shell-scripts to automate routine activities
• Backing up of file systems using bash script and cron jobs.
• Monitored systems health and resources using Nagios by configuring sensors
• Updated inventory of equipment in the data center

Confidential, Toms River, NJ

Senior Systems Administrator

Responsibilities:

• Racking and Stacking of Dell and HP Servers
• Created and managed Swap space as needed with methods of Performance and Kernel Tuning
• Configured passwordless login with secure authentication for SSH
• Configured Samba servers so that windows machines can access shared files, home directories and printers on Linux servers
• Created IAM users on AWS to create users with proper administrative permissions
• Spun EC2 instances on AWS and used its features to provision, monitor, and distribute compute infrastructure
• Configured LDAP based authentication on RHEL Clients and Firewalls for VPN access
• Updated YUM repositories with RPM packages as per client requests
• Utilized pre-existing playbooks to complete routine tasks such as rebooting servers, unattended app installation and backing up of root files system using cron jobs.
• Administered User accounts and security groups which included creation, deletion, and setting permissions for users. Created users both manually and with useradd command.
• Managed multiple users using scripts such as creating and deleting users
• Migrated local users and groups from one system to another and kept their data synched with Rsync
• Disaster Recovery - maintained and improved company tape backup systems
• Created Clusters of servers on VMWare and migrated Virtual Machines to different servers using vMotion
• Updated Documentation for team and helpdesk on how to perform certain tasks
• Wrote disaster recover Documentation

Confidential, NYC

Systems Administrator

Responsibilities:

• Racking/Stacking of Dell and HP servers along with switches and firewalls
• VMWare - Built an ESXi host and deployed various operating systems on it with the required resources
• ESXi Installation on HP ProLiant Servers Using Customized ISO
• Creating and Managing VMware cluster with HA and DRS
• Creating and Managing resource pools for Virtual Machines
• Monitoring and managing performance of ESXi servers and Virtual Machines using Virtual center server for HA, DRS and VMotion
• User account management which included creation, deletion, permissions as well as adding them to proper security groups on both Linux and Windows
• Synced servers to Active Directory and LDAP server
• Configured a backup server using Veeam
• Built a Citrix server and populated apps on it
• Experience in configuring Fortinet firewalls, switches and Access points.
• Experience in configuring site-to-site VPN tunnels between various site offices
• Experience with SSL and IPSec VPN
• Experience with VLANs and subnetting techniques and port forwarding
• Experience of working in Data centers with 24X7 Production and On-Call Environments
• Experience with Migrating Domains.
• Experience with buying O365 tenants and adding new domains/DNS
• Preparing few basic scripts to automate routine tasks
• Used Kaseya centrally to manage workstations/servers for all clients.
• Experience with provisioning terminal servers using Remote Desktop Services (RDS) and RDP
• Setting up SAMBA & NFS servers, to enable Windows & UNIX clients to communicate with Linux without the need of additional software on the Windows side, such as NFS clients
• Develop and maintain Active Directory Group Policy Objects (GPO), accounts, and security groups
• Management and Configuration of Active Directory (AD) Attributes, LDAP Queries, PowerShell Scripting to Modify AD Attributes, Group Policy Analysis, GPO Configuration & Item-Level Targeting
• Provided L3 team support for Linux Apache Web Servers
• Experience with configuring Azure Active Directory
• Basic troubleshooting on Users workstations
• Managing and Creating emails on exchange(owa), O365 and google as well as synching Exchange to O365 via PowerShell commands
• Maintained(Rebuild) workspaces on AWS and mapped them to local storages
• Experience with building and maintaining QuickBooks, Timeslips, ACT and other database servers