Amazon LIghtsail instance cannot boot

If your Amazon Lightsail instance is unable to boot up after a reboot, there could be several potential issues to investigate:

Configuration Changes: Review the cron jobs you added before rebooting the server. It's possible that one of the cron jobs caused an issue during startup. Check for any misconfigurations or errors in the cron jobs that could be preventing the instance from booting properly.

Disk Space: Insufficient disk space can cause an instance to fail to boot. If your instance's disk is full, it may not be able to start up properly. Check the disk usage on your instance and free up space if necessary.

Logs: Check the system logs on your Lightsail instance for any error messages or indications of what might be causing the boot failure. Look for messages related to the startup process, filesystem checks, or any services failing to start.

Security Group Rules: Ensure that the security group associated with your Lightsail instance allows inbound traffic on the necessary ports for Grafana to function properly. If the security group rules are too restrictive, it could prevent the instance from booting correctly.

Instance State: Check the instance state in the Lightsail console to see if there are any warnings or errors reported. If the instance is stuck in a pending or stopping state, it may indicate a problem with the Lightsail infrastructure.

Snapshot Restore: If you're unable to resolve the boot issue, you can try restoring the instance from a snapshot taken before the problem occurred. This can help you revert to a known working state.

Check System Logs: If your instance is not booting up, you may not have access to the Grafana dashboard or any other interface. However, you can still check system logs from the Lightsail console or through SSH if you have configured it. Look for any error messages or indications of what might have gone wrong during the boot process.

Resource Exhaustion: If your cron jobs are consuming too many system resources (CPU, memory, disk space), it could lead to the instance becoming unresponsive or failing to boot. Check resource usage metrics in the Lightsail console or through monitoring tools like CloudWatch.

Cron Job Errors: Review the cron jobs you have set up and ensure they are configured correctly. A misconfigured cron job could potentially cause issues during boot.