SUMMARY

• Linux System Administrator with 5 years of experience in Linux environment and expertise in multiple flavors of Linux which includes RedHat and CentOS.
• Skilled in handling incidents, tickets, and service requests associated with all kinds of troubleshooting including Networking, System Performance, LVM and File System Errors.
• Extensive knowledge and experience with Operating Systems Installation, upgrading packages and Patches, automation, maintaining user accounts, System Security maintenance, backup/recovery, performance tuning, monitoring and troubleshooting at various levels. In addition, proficient with cloud technologies mainly AWS and additional DEVOPS tools such as Ansible, Git, GitHub, GitLab & Docker.
• Excellent verbal and written communication skills with strong personal and professional initiative with a focus on organizational and team success.

TECHNICAL SKILLS

Operating System: RedHat Enterprise Linux (RHEL) 6,7,8 CentOS 6, 7, 8.

Networking Protocols: TCP/IP and UDP (HTTP/HTTPS, DHCP, DNS, NFS, FTP/ SFTP, SSH)

Virtualization Technologies: VMware, ESXi host, Virtual Box, vSphere, V - centers and Datastores.

Virtual Machine management: Break/Fix, Provisioning & Decommission, Patching, Migrations.

Deployment & provisioning: BareMetal Servers, virtual machines, with Linux, EC2

Installation and Configuration: VMware Templates, PXE, Kick-Start servers, Apache Web server, PXE- servers, Yum repository, NFS, DNS server, FTP, TFTP, DHCP, and GITHUB.

Storage & Disk Management: SAN, NAS, RAID, LVM.

Backup Tools: NetBackup, Bacula

Monitoring Tools: Nagios, CloudWatch.

Automation Tools: PXE/ Kickstart, Red hat Satellite, Ansible, Ansible Tower, Ansible Galaxy

Version Control Tools: GIT, GitHub, Git Lab.

Scripting: Bash shell Scripting, corn shell, YAML

Hardware: Dell PowerEdge R740, HP ProLiant DL380p Gen8 Rack ServerJuniper routers, Cisco routers/switches, NICs etc.

Cloud Technologies: Amazon Web Services (AWS): IAM, EC2, ELB, RSD, S3, GlacierCloud formation, CloudWatch.

Databases: MySQL, MariaDB, RDS, SQL server

Web/Application Servers: Apache Web Server/ LAMP Stack (Linux, Apache, MySQL, PHP)

DevOps and Automation tools: Docker images using Docker File, worked on Docker container snapshots, removing images and managing Docker volume

Programing Languages: C++, Java Script

PROFESSIONAL EXPERIENCE

Confidential, Jersey City, NJ

Sr. Linux Systems Administrator

Responsibilities:

• Installing and configuring, maintaining, supporting, troubleshooting, and deploying upgrades on Linux servers such as Redhat Enterprise Linux (RHEL) and Centos.
• Created templates, clones, snapshots for VMs, and added resources such as CPU, RAM, Storages, and migration of Virtual Machines (Hot and Cold Migration) across the clustered environments.
• Installed and configured servers (DHCP, FTP, TFTP) needed for over the network installation of virtual machines using PXE boot.
• Worked with different teams such as Network Engineering, Database teams, Application teams, Middleware Team, Storage team, security team and Data center team to resolve the issues and provide customer satisfaction. configuration of NIC-bonding on new builds with ability to handle load balancer implementations like bonding multiple interfaces into single bond in case of over-load on LAN devices.
• Managing users, groups with Active directory and LDAP as well as assigning files access privileges, changing ownerships and groups, modifying the files permissions on daily basis.
• Package management such as: YUM and RPM to install, update, remove packages from the system, and solve the dependencies for packages.
• Configuration and maintenance of common Linux services such as Apache, MySQL, NFS, FTP, LDAP, DHCP, DNS BIND, HTTP, HTTPS, SSH, iptables and firewall etc.
• Troubleshooting and resolving tickets related to system performance on Linux Servers using tools (top, vmstat, iostat, sar utility) anticipate Virtual memory, Swap management, Disk and CPU utilization.
• Strong technical background inStorage and Disk Management, Logical Volume Management (LVM), Implementation of RAID on Red hat cluster servers in SAN Storage Area Environment.
• OS storage management by creating static and dynamic partitions using fdisk, and creating, modifying, mounting, and unmounting the file systems.
• Deployed NFS for sharing files, directories and storage management in the environment.
• Implement Ansible & Ansible Tower as a configuration management tool, for automating patching projects, to automate repetitive tasks, quickly deploys critical applications, and proactively manage packages using yum and package module.
• Creating ansible playbooks roles, tags, dictionaries & handlers, to automate day to day tasks.
• Automated various infrastructure activities like Continuous Deployment, Application Server setup, Stack Monitoring using Ansible playbooks.
• Hands on experience in Amazon Web Services(AWS)provisioning, IAM (Identity Access and Management), EC2, S3, Glacier, ELB (Load Balancers), Cloud Watch, RDS, and EBS.
• Worked with IAM to create and manage AWS users and groups and use permissions to allow and deny their access to AWS resources.
• Designed scalable and highly available Domain Name System (DNS) within AWS Cloud to route traffic to AWS Cloud from users connected using AWS Direct Connect for larger deployments.
• Tagging and maintaining the versions across the environments using version control tools like GIT and managed Git Hub.
• Creating Docker images using Docker File, worked on Docker container snapshots, removing images and managing Docker volume.
• Worked on infrastructure with Docker containerization. Collaborated with development support teams to setup a continuous delivery environment with the use of Docker. knowledge with running container with web-based application deployment in EC2 instances by using Docker images, docker files, Docker Hub and Docker-registries

Confidential, Piscataway, N.J

Linux Admin

Responsibilities:

• Provided system deployment, system administration and operational support to Linux based production and development servers both in on premises and cloud environments.
• Utilized vSphere, vCenter technologies to automate ESXi host configuration across a large number of hosts and clusters.
• Perform daily administration activities on Linux servers, form adding space, ticket requests from the clients.
• User management, configuring new and old accounts.
• Administration of VMware, vSphere, vCenter (versions 6.0 & 6.5).
• Deploying new VM machines using templates & PXE.
• Maintain the health of VM machines using Nagios.
• Perform clustering in ESXi for High availability.
• Migration of VM Machines (Hot and Cold Migration) across the cluster.
• Worked on Monitor patch releases and develop patch installation strategies.
• Administration of local and remote servers using the SSH utility.
• Configuring and managing AWS infrastructures.
• Deploying EC2 instance as per requirement.
• Responsible for managing IAM, S3 and EBS services.
• Monitoring and maintaining the health of EC2 instances with CloudWatch service in AWS environment.
• Building new servers, configuration, mostly on RHEL 6,7 as per client request.
• Installation, configuration and maintenance of PXE, NIS, NFS, DNS servers.
• Involved in writing various custom Ansible playbooks for deployment orchestration and developed Ansible Playbooks to simplify and automate day-to-day server administration tasks.
• Install, configure, maintain, and troubleshoot enterprise-wide Apache web servers in a large Red Hat Linux/CentOS environment.
• Writing the bash scripts to automate daily tasks e.g., user management, service management, package management etc.
• Participate in application coordination launching process.
• Worked on deployment, support, and diagnose real issues for a production environment.
• Monitoring via Nagios to ensure consistently aware of application, infrastructure, and network health status.
• Manage and Adjust disk space on various Linux Red Hat servers utilizing Logical Volume Manager (LVM).
• Creating repositories, branches, pushing, pulling code on GITHUB.
• Worked on Symantec net backup on operations such as monitoring for failed backup jobs, resolving backup issues based on status codes.
• Reviewing system and application logs for troubleshooting.
• Perform daily system monitoring.
• Design and document processes and procedures to automate common tasks.