DevOpsFetch using BashScripting

DevOpsFetch is a powerful command-line tool designed for DevOps professionals to quickly retrieve and display system information, including active ports, Docker containers, Nginx configurations, user logins, and system activities within specified time ranges.

Features

• Active port and service monitoring
• Docker image and container management
• Nginx domain and configuration inspection
• User login tracking
• Time-based activity logging
• Continuous monitoring via systemd service
• Formatted output for improved readability

Table of Contents

1. Installation
2. Configuration
3. Usage
   • Port Information
   • Docker Information
   • Nginx Information
   • User Information
   • Time Range Activities
   • Help
4. Logging Mechanism
5. Troubleshooting
6. Notes

Installation

To install DevOpsFetch, follow these steps:

1. Clone this repository: git clone [https://github.com/fortis-07/devOps-fetch.git]

2. cd devopsfetch

3. Run the installation script:

sudo bash ./dev5_install.sh

This script will:

• Install necessary dependencies (jq, nginx, docker.io)
• Copy the DevOpsFetch script to /usr/local/bin/
• Set up a systemd service for continuous monitoring
• Configure log rotation

Configuration

After installation, you can configure the systemd service by editing its unit file:

sudo nano /etc/systemd/system/devopsfetch.service

You can modify the ExecStart line to change how often the tool runs or what command it executes. After making changes, reload the systemd daemon and restart the service:

sudo systemctl daemon-reload
sudo systemctl restart devopsfetch.service

Usage

DevOpsFetch can be used with various command-line flags:

Port Information

• Display all active ports:

devopsfetch -p

• Display information for a specific port:

devopsfetch -p 80

Docker Information

• List all Docker images and containers:

devopsfetch -d

• Display information for a specific container:

devopsfetch -d my_container_name

Nginx Information

• Display all Nginx domains and their ports:

devopsfetch -n

#- Display configuration for a specific domain

devopsfetch -n example.com

User Information

• List all users and their last login times:

devopsfetch -u

Time Range Activities

• Display system activities within a specified time range:

devopsfetch -t "2023-07-24 00:00:00" "2023-07-24 23:59:59"

Help

• Display usage instructions:

devopsfetch -h

Logging Mechanism

DevOpsFetch uses systemd for logging. Logs are stored in the system journal and a dedicated log file.

To view the systemd service logs:

sudo journalctl -u devopsfetch.service

To view the dedicated log file:

sudo cat /var/log/devopsfetch.log

Troubleshooting

If you encounter issues:

1. Check the service status:

sudo systemctl status devopsfetch.service

2. View recent logs:

sudo journalctl -u devopsfetch.service -n 50 --no-pager

3. Ensure the script has correct permissions:

sudo chmod +x /usr/local/bin/devopsfetch

4. Verify the script content:

sudo cat /usr/local/bin/devopsfetch

5. If changes are made to the script, restart the service:

sudo systemctl restart devopsfetch.service

Notes

Configuration and Permissions

• Verify Paths and Permissions: Ensure all file paths are accurate and accessible. Confirm you have the appropriate permissions to execute the script and access required system information.

• Privilege Requirements: Some operations within the script may necessitate root or sudo privileges. Ensure you execute commands with the necessary level of access.

• Function Testing: Test each function in isolation to validate its operation before integrating it into the main script.

• Configuration Adjustment: Modify configurations to align with your specific environment and requirements.