Example:Real-time monitoring of filesystem events

Overview¶

This guide demonstrates how to set up real-time monitoring on a Linux directory to detect filesystem events. When an event occurs, the system logs the corresponding file names in a log file located in the /tmp directory.

The source files for this example are available on GitHub.

Files¶

• Dockerfile: Defines the Docker image build process.
• monitor.sh: Monitors the /incoming_folder directory for filesystem events.
• handler.sh: Executed by monitor.sh when a filesystem event is detected, logging the affected file name.

Usage¶

To set up the monitoring system, follow these steps:

1. Clone the Git Repository, then build and run the Docker container:

docker build -t file-monitor:v1 .
docker run file-monitor:v1

1. Access the Running Container: Open a new terminal window and execute:

docker ps  # Lists running containers
docker exec -it <container-id> /bin/sh

1. Trigger Filesystem Events: Navigate to the monitored folder and create test files:

cd /incoming_folder
echo "Hello " > hello.txt
echo "Hello 2" > hello2.txt

1. View Logged Events: Monitor the log file to observe the captured filesystem events:

tail -f /tmp/event_log.txt

Example output:

A file create event was triggered for: {hello.txt}
A file create event was triggered for: {hello2.txt}

This setup ensures real-time monitoring of directory changes, making it useful for automated processing workflows.

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