Abdullah Mansoor

About Abdullah Mansoor

DevSecOps Engineer with 7 years of experience automating cloud infrastructure…

Experience

1. Linux Engineer

   Citi

   Dec 2022 — Present · NYC, NY, US

   Implementing AWS Identity and Access Management (IAM) to create and manage roles, users, and groups, and integrating multi-factor authentication (MFA) for enhanced security of AWS accounts and resources.• Created monitors, alarms, and notifications for EC2 hosts using Cloud Watch. • Responsible for installation, configuration, maintenance of the Linux health systems for RHEL 6/7/8 and monitoring them using tools such as Nagios and using commands like vmstat, mpstat, sar and top. • Automated configuration management and deployments using Ansible playbooks and YAML for resource declaration. • Working with Ansible tower for managing credentials and making ansible inventory management more intuitive using the graphical user interface.• Responsible for setting up local and NFS filesystems for applications.• Responsible for configuring User Authentication for the Linux systems using LDAP.• Used Splunk to monitor the logs for both Prod and non-prod environments. Collaborating with other teams to identify and implement best practices for monitoring, troubleshooting, and resolving issues related to production servers and applications.• Migrating VMs across hosts within a HA cluster to perform maintenance tasks on ESXi hosts.• Used GIT for source code management in software development and tracking changes in the source code.• Utilizing a range of monitoring tools such as Sensu and Nagios to detect and resolve failing services, ensuring optimum system availability and performance. • Managing Logical Volume Manager (LVM) to optimize storage utilization, ensured resizing of filesystems without down time, and simplified disk management. • Proficient in configuring NIC bonding to increase network performance and availability, resulting in more efficient and reliable network operations.• Virtualized the servers using Docker for the test environments and dev-environments needs, also configuration automation using Docker containers.

Education

• City University of New York-College of Staten Island

  Bachelor's in computer information technology

  2018