Python System Administration Scripts for DevOps Engineers

This article presents a comprehensive collection of Python scripts designed for system administration and DevOps tasks. The content is organized into 12 main sections, each covering a specific aspect of system management.

The first section covers CPU usage monitoring using the psutil library, providing a continuous monitoring script that displays real-time CPU utilization percentages. The second section focuses on memory usage monitoring, tracking total memory, available memory, and usage percentages.

Log analysis is addressed in section three, where a script parses log files using regular expressions to extract timestamps, log levels, and messages. File backup functionality is covered in section four, implementing automated file copying with timestamp-based naming conventions.

System updates are automated in section five using subprocess calls to apt-get commands for system package management. Network monitoring is implemented in section six, tracking bytes sent and received over network interfaces.

Service management scripts in section seven allow starting and stopping system services using systemctl commands. System reboot functionality is provided in section eight through subprocess calls to the reboot command.

User management is covered in section nine, with scripts for adding and removing users using useradd and userdel commands. System log management in section ten includes scripts for clearing log files by truncating their contents.

Comprehensive system resource monitoring is presented in section eleven, combining CPU, memory, and network monitoring into a single script. File permission management is addressed in section twelve, providing scripts to change file permissions using os.chmod.

The final section covers system information collection, gathering details about the operating system, release version, machine architecture, CPU usage, and memory statistics using platform and psutil libraries.

The article concludes by emphasizing how these scripts can help DevOps engineers manage and maintain systems more efficiently, providing practical automation tools for common administrative tasks.