Linux System Administrator
Procore-Plus
09.2023 - Current
- Monitored servers to ensure proper system functions with CheckMK, Nagios, and Graylog log management
- Deploy Containers via Docker, Podman
- Performed day to day Linux administration tasks such as user account management, directory services, file system sharing and permissions
- Utilized logical volume manager (LVM) and swap to create, modify, delete file systems
- Optimized system and application performance using techniques like shutdown, reboot, start and stop services and tools to identify performance issues and solutions
- Edited system configuration files: network settings, kernel parameters, service configuration files, cron jobs
- Installed, configured, and maintained services such as NFS, Apache Web Server, SSH, RPM and YUM Repository
- Performed standard system administration tasks such as troubleshooting and problem resolution, patching, installing packages using rpm and yum, drivers, software and hardware upgrades
- Wrote shell scripts for various system tasks such as back-ups, collecting and sorting logs, installation and monitoring
- Configured iptables firewall and hardening Linux systems for system security
- Managed disks and file systems using
- Administered Nagios monitoring tools for servers monitoring and incident alerts
- Monitored and maintained the disk space and backup systems, and implemented change controls, capacity planning and growth projections on the systems
- Performed troubleshooting existing user accounts, security objects and authorizations to resolve security conflicts by creating sudo rules, supporting users, setting up new accounts and password resets
- Involved in daily incident management and resolved the day-to-day problems raised by the users and incidents which are logged by monitoring system
- Manage virtualized servers with VMware and Oracle Virtual Box
- Worked extensively with Network File System (NFS) for storage
- Kernel Upgrading during outage in production boxes
- Handling problems or requirements as per the ticket (Jira) created
- Experience creating, configuring and managing infrastructure with tools like Ansible, Terraform and Foreman
- Installation of Red Hat Enterprise Linux virtual machines (RHEL 7 & 8 &9) and CentOS
- Experience with modern control systems, Git.
- Interacted directly with users to diagnose and correct major system issues and address concerns.
- Created and serviced administrator and user accounts on Linux-based systems, managing [Number] deployments.
- Preserved system documentation accuracy via regular data updates and graphical refreshes.
- Configured and maintained web servers with [Number] end users.