OBJECTIVE:

IT professional with 6 years of experience in Linux systems administration/engineering, Seeking a position where I can face new challenges to grow professionally and also looking forward to implement extensive expertise of troubleshooting issues.

SUMMARY:

• IT experience in System Administration/Engineering on different Linux flavors i.e. Centos Linux, Red hat and Software configuration management.
• Expertise in Installation, Configuration, Integration, Tuning, Backup, Crash recovery, Upgrades, Patching, Monitoring System Performance, Network Security and Troubleshooting of Red hat Linux Servers.
• Provide support for physical, virtual and cloud - based Linux systems.
• Own end-to-end availability and performance of mission critical services and build automation to prevent problem recurrence.
• Participate in the on-call rotation, analyze alerts, and identify and recommend improvements.
• ID Management & user administration in NIS domain; Troubleshooting and administration of NIS Master-slave.
• Providing administration of Linux create users and groups, permissions, folders, mail, web, installation.
• Maintaining patch updates, security hardening, and software and hardware updates to provide for a stable infrastructure.
• Monitoring server resource utilization and administrating servers to maintain system efficiency.
• Interacting with other system engineers, developers, database administrators, client teams, vendors, and other teams for infrastructure compliance and system certification.
• Making technical recommendations on architecture, capacity planning, security, and system performance optimization.
• Implementing, documenting, and coordinating server and storage policies, procedures, and standards.
• Perform daily system monitoring, verifying the integrity and availability of all hardware, server resources, systems and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups.
• Audit and harden systems that communicate with external clients and servers.
• Good experience in reviewing system logs files for errors. Settings up CRON jobs for backups and monitoring process.
• Add, remove and resizing Logical volumes using LVM in Linux and implementing software RAID at installation time.
• Strong Knowledge on Amazon Web Services (AWS) administration.
• Experience in writing scripts to automate jobs and debugging scripts.
• Experience with process engineering, and change management in a complex environment.
• Experience working with ticketing systems RT and Remedy.
• Strong problem-solving approach, monitoring and 24/7 production support in mission critical environments.
• Maintenance level upgrades and software administration RPM installation on Linux using YUM.
• Provide drill down reporting for application teams to use in monitoring their application resource usage/performance using Nagios.
• Experienced in DNS, NFS, FTP, NIS, LDAP, remote access, security management, and system troubleshooting skills.
• I use cloud formation the automation Feature of AWS, manage IAM roles, attach EBS block storage to EC2 instances and also create S3 bucket
• With ansible i patch the systems, push configurations into client machines, install applications, manage the services, I write playbooks using Yaml language.
• Ability to write robust, maintainable, scripts in Bash, Python

TECHNICAL SKILLS:

Operating System: Red Hat Enterprise Linux 5/6/7, Centos 5/6/7.

Hardware: HP, Dell, Desktops, Virtual Machines.

Language: BASH Scripting,Python.

Database;: MySQL, SQL.

Network/Application Servers: VPN, TCP/IP, UDP,WAN,LAN, DNS, DHCP, SNMP, Pxe-Boot with KickStart, NFS, NIS, SSH, VSFTP, AutoFS, HTTP, FTP, Apache, Samba, NetBackup, RT Ticketing Service, Nagios, vulnerability management software MacAfee Foundstone, VMware, V-Sphere, V-center, ESXI, Storage (NAS, DAS, ISCSI), V-motion, KVM, P2V, V2V, LVM, Cronjob, Firewall,Git, IPtables, MS office, MS outlook, Ansible, TCPdump, Wireshark, Ilo /AND Idrac.

PROFESSIONAL EXPERIENCE:

Confidential, NYC

Linux Systems Administrator/Engineer

• Racking and Stacking of servers and configured them with PXE-boot kickstart.
• Built servers, installed tools, configured and provisioned servers as per enterprise standards and enabled log, port monitoring of servers and applications.
• Provisioning and maintaining Red hat, CentOS and Windows systems using Red hat satellite kickstart server as well as PXE-boot with Kick Start.
• Responsible for Installation, configuration, Maintenance, Deployments, Update, Monitoring, performance tuning on RedHat Linux 5.x, 6.x 7.x, using Kickstart Servers and Interactive Installation.
• Installed, configured and supported RAID 0, RAID 1, RAID 0+1, and RAID 5.
• Designed and implemented multiple Virtualization Infrastructures on VMware Hypervisor. Built and configured Virtual Linux Machines using ESXi and VSphere Client. Experience supporting VMware infrastructure in a large enterprise environment.
• Installation and configuration of different Linux Flavors OS on different Virtual Machines for multiple remote data centers.
• Remote system administration via tools like SSH and Telnet.
• Troubleshooting and Configuration of EXT3, EXT4, XFS file systems.
• Package management - YUM and RPM package installations, updates, rollback patches and others.
• Installation of local yum repository and package administration using yum and rpm, Installing and upgrading software on Linux Systems (rpm/yum) using ansible.
• Maintain GIT repository, handling branching, Merging, tagging and release activities
• Add, remove and resizing Logical volumes using LVM in Linux and implementing software RAID at installation time.
• User administration with LDAP and enabled security using the LDAP registry by assigning different roles to different users and groups.
• Setting up NIS domains, master server, slave and clients and resolving authentication issues.
• Responsible for backing up all systems using NetBackup 7.5 and restoring files in the event of data loss and restoring data upon user request.
• Excellent experience changing kernel parameters, tune them for database and tuned them for best performance.
• Involved in resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy
• Experience with Offshore team management providing necessary troubleshooting support, solving vulnerability tasks and issues.
• Very good knowledge with ITIL Processes (Incident, Problem and Change Management etc.)
• Analyze subnets for Vulnerabilities using McAfee Found Stone and remediating vulnerabilities.
• Management of Patch configuration, version control, service pack and reviews connectivity issues regarding security problem, manages systems routine backup, scheduling jobs and enabling cron jobs.
• Configured Networking Concepts TCP/IP, DNS, NFS, NIS, LDAP, SSH, SSL, SFTP, SMTP, SNMP, troubleshooting network problems such as TCP/IP, providing support for users in solving their problems
• Installation, configuration of Ansible on Linux, UNIX clients, pushing profiles to new servers.
• Have written YAML playbooks to automate delivery of packages as well as configuration files.
• Applying patches through YAML playbooks.
• Expertise in Configuration Management, Cloud Infrastructure, Automation. It includes Amazon Web Services (AWS), Ansible.
• Utilize the Amazon Elastic Compute Cloud (EC2) features for provisioning, monitoring, scaling and distribution of compute infrastructure.
• Use Amazon Cloud Watch to establish metrics and monitor the health/utilization of AWS resource.
• Perform AWS and on premise resources backups using AWS services.
• Utilize AWS Cloud Formation to automate infrastructure provisioning and deployment to reduce time to production.
• Build scripts and automated solutions using scripting languages such as Bash and shell
• Perform System Monitoring with Nagios, Manage user accounts with command line and GUI

Confidential, Ridgefield Park, N.J

Linux Systems Administrator/Engineer

• Install and maintain Linux servers in support of established requirements. Perform software installations and upgrade.
• Maintain Linux platforms and layered software packages, and Provide in depth troubleshooting.
• Responsible for OS installs, system configuration and upgrades.
• Responsible for identifying points of vulnerability and non-compliance for over 700 systems and recommend mitigation strategies as needed..
• Configure and manage Linux, CentOS and Windows operating systems and install and load operating system software as well as troubleshoot.
• Maintain integrity and configure network components along with implementing operating systems enhancements to improve reliability and performance
• Good troubleshooting skills to monitor server performance, hardware, network related issues
• Assist team in troubleshooting & resolution of server performance issues, software and network related issues
• Involved in applying new patches and packages for Linux Servers and handled issues arising out of them.
• Implement changes and troubleshoot issue related to Backup as requested by backup team.
• Managing VMware for Linux VM's as requested by owners.
• Proficient in User/Group administration, SUDO, file system management, configuration of clients/servers & troubleshooting in Linux & Unix Servers.
• Knowledge of VERITAS Cluster Suite, NAS/SAN Storage fundamentals, LVM.
• Experience in RPM Package Administration for installing, upgrading, and checking dependencies, Reconfiguring RPM databases using RPM Build and creating YUM repositories in RHEL.
• Experience in OpenSSH, FTP, Apache, DNS, and samba, NIS, NFS server.
• Work with Ansible playbooks for virtual and physical instance provisioning, configuration
• Maintain GIT repository, handling branching, Merging, tagging and release activities
• User administration with LDAP which includes creating, deleting and modifying user attributes
• Configured Kernel Parameters for application and databases to meet organizational needs.
• Develop and administer disaster recovery plans.
• Keep network infrastructure up-to-date and secured, and write and maintain network security policies and monitor compliance.
• Ability to write robust, maintainable, scripts in Bash.
• Perform System Monitoring with Nagios, Manage user accounts with command line and GUI .
• Experience NIC bonding configuration in Linux and UNIX systems to increase the bandwidth or redundancy based on requirement by the application.
• Cloud formation for entire AWS resources, IAM roles, Virtual private cloud, EC2 instances and S3 buckets Designed processes and Provisioning infrastructure architecture for HD Vest applications and used AWS infrastructure as code for various environments.

Confidential, NYC

Linux Systems Analyst

• Experienced in monitoring and debug performance issues on different OS Linux (RHEL & Centos),
• Providing both Remote and On-Site System Administration support for Red Hat Linux Servers
• Setup and configuration of Kernel Based Virtual Machines on Red hat Enterprise Linux Servers .
• Disk and file system management using Logical Volume Manager for Linux.
• Installation of local yum repository and package administration using yum and rpm, Installing and upgrading software on Linux (rpm/yum) and Windows Systems using puppet.
• Experience in creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Providing 24x7 on-call support on rotation basis and Handling High priority incidents through bridge call.
• Configuration of DNS and local YUM repository for software package management.
• Hardening systems with Security Enhanced Linux and File System Special permissions
• File transfer with NFS, Autofs, FTP, SAMBA, SSH etc.
• Installation and configuration of Apache Webserver in a LAMP stack.
• Linux to Linux and Windows to Linux migration of existing Learning Management Systems to support large data center migration initiative. P2P and P2V migrations.
• Perform Physical to physical and Physical to Virtual migrations using RSYNC, and WINSCP
• Configure and maintain OpenSSL
• Perform MYSQL installations, database design, configuration, backup, recovery and upgrades in both Linux and windows environment.
• Automate processes using python Scripting.