SUMMARY:

• Overall, +4 years extensive experience as Linux Admin. Working experience of Linux OS i.e. file systems, storage, process management, and basic Linux command line. Expert level experience in deployment, configuration, maintaining, monitoring, and troubleshooting of RHEL/ Centos 6 & 7 and managed, coordinated, and implemented software upgrades, patches, hot - fixes on servers, workstations, and network hardware. Strong experience in automation tools such as Ansible, bash scripting. Experience in the areas of DevOps and AWS, automating lifecycle management solutions, and enforcing security and compliance procedures to assure a secured environment.

TECHNICAL SKILLS:

Operating Systems: RedHat 6.x, 7.x, CentOS 6.x,7.x, UbuntuFile System Ext3, Ext4, XFS

Automation: PXEboot, Kickstart, Ansible, Bash scripting

Performance Management: Solarwind, top, netstat, iostat, sar and vmstat, Nagios

Software Management: YUM, RPM, RedHat satellite

Storage: SAN, NAS, NFS, RAID, LVM, DASVirtualization WMware, ESXI, vCenter, vSphere, vConverter, DRS & FT.

DevOps Tools: Ansible, Git, Docker, CI/CD pipeline, Jenkin and Kubernetes, AWS

Hardware: HP & Dell Servers, Cisco Switched, and printers.

Applications and Protocols: NFS, FTP, TFTP, Telnet, SSH, HTTPD, nslookup, tcpdump, PING, DIG, ICPM, TCP/IP, & UDP.

EXPERIENCE:

Linux Admin

Confidential, Jersey City, NJ

Responsibilities:

• Installing, testing, tuning, upgrading, troubleshooting Red Hat 6.x, 7.x servers (both physical and virtual server) issues.
• Building virtual Servers, performing patching and OS upgrading (rebuilds), and taking care of associated hardware break/fix and software Installations related to the patching and OS upgrade activities.
• Managed numbers of virtual machines on VMware ESXi using VMware Vsphere, VMware Vcenter, and vMotion.
• Handled different types of migrations such as Physical Machine to Virtual Machine, Virtual to Virtual, participated in the migration of Virtual Machines from one VCenter to another.
• Experience in installing software and packages on RHEL servers through YUM, RPM, and Buiding local Yum repose for getting benefits in offline mode.
• Knowledge of working with security hardening and automation of the process by writing Ansible playbooks and creating roles.
• Quickly retrieving information & deploying configuration on multiple systems by taking advantage of Ad-hoc commands.
• Working with GIT for managing code, and versions control. Worked with gitlab to manage code in a centralized platform.
• Working with Ansible Tower for the deployment of Ansible Playbooks from a centralized platform.
• Configuring containerized environments to run the apps in an isolated environment. Building images and running containers, moving monolithic apps to microservices, enhancing developer workflow, increasing scalability.
• Setting up a Kubernetes cluster, managing clusters, creating and managing pods, deployments, application management.
• Familiar with AWS services. Launching EC3 instances, importing volumes, managing S3 buckets.
• Assigning roles and policies through IAM, managing security groups in the defined Virtual Private Connection (VPC).
• Creating and deploying Logical Volume Manager, resizing, the physical volume, volume groups, and logical volume. Also worked with migration, activation, and deactivation of the volumes.
• Creating, mounted, ensured boot persistence (fstab), resized, EXT 3, EXT 4 & XFS file systems.
• SME of performance tuning using TOP, SAR, VMSTAT, IOSTAT commands, finding the Bottlenecks of Processes, CPU, Network, Disk, Memory and Swap space troubleshooting to avoid any performance-related issues.
• Handling post-patch issues with OS and kernel. Tuned Kernel by adjusting Kernel Parameters.
• Experience in configuration of network services HTTP, DNS, DHCP, FTP, TFTP, SMTP, NIS. Expert level in network troubleshooting.
• Strong knowledge of recovering the root password and other Operating System-level trouble shootings i.e., recovering initramfs, grub configuration.
• Setup software RAID on Linux Red Hat and CentOS Systems and hardware RAID (0,1,5,6)
• Remotely managed servers Dell servers using IDRAC, HP servers using ILO, and Virtual Console Center.
• Working on user management, giving, and blocking permissions in Linux for the file/directories and users/groups. Good exposure of special permissions SGID, SUID, STIKY BIT and UMASK, setup ACL.
• Expert in SSH configuration and managing access (allowing and denying) and ensuring secure access by using openSSH and creating RSA keys to ensure passwordless access to local and remote servers.
• Performing File system administration to make, repair corruption, and then maintain the performance by health checks from time to time.
• Worked in Change, Incident, Problem, and agile methodologies using Industry standard ticketing solutions like ServiceNow and Jira.
• Knowledge of creating scripts in Bash to automate my daily administration tasks.
• Configuring NFS with auto mounting to make it boot persistent.

IT Support Technician

Confidential, Piscatway, NJ

Responsibilities:

• Racked and stacked of servers in data center.
• Software and Hardware installation and cabling of servers.
• Resolved onsite issues i.e. PC Setup and configurations, network connections, PC diagnostic issues and printer problems.
• Opening support cases with VENDORS to replace inoperable hardware including hard-disks, memory dims, fans, CPU, and raid cards.
• Maintain asset tracking documentation and inventories and dispose of equipment as warranted.
• Implemented access control list (ACLs) on files for complex user and group access permissions.
• Resolved tickets generated for troubleshooting equipment hardware issues.
• Troubleshot of the network-related issues.
• Managed storage capacity on request.