EC2Rescue for Linux Instances

What is EC2Rescue for Linux?

EC2Rescue for Linux is a tool provided by AWS to help diagnose and recover issues in Amazon EC2 Linux instances.

Common Use Cases

• Fixing boot failures
• Restoring network connectivity
• Recovering from file system issues
• Resetting lost SSH keys or passwords

Download and Install EC2Rescue for Linux

Run the following command to download EC2Rescue:

wget https://s3.amazonaws.com/ec2rescue/linux/latest -O ec2rescue-linux

Then, make it executable:

chmod +x ec2rescue-linux

Running EC2Rescue for Diagnostics

To check for common system issues, run:

sudo ./ec2rescue-linux --collect-only

Recovering SSH Access

If you cannot connect via SSH, use:

sudo ./ec2rescue-linux --restore-ssh

Checking Boot Logs

Use EC2Rescue to collect and analyze boot logs:

sudo ./ec2rescue-linux --collect-logs

Fixing File System Errors

Run the following to repair file system issues:

sudo ./ec2rescue-linux --restore-fstab

Resetting Root Password

To reset the root password:

sudo ./ec2rescue-linux --reset-password

Restoring Network Configuration

If the instance has lost network connectivity, try:

sudo ./ec2rescue-linux --restore-network

Generating a Support Bundle

If further AWS support is needed, generate a support bundle:

sudo ./ec2rescue-linux --collect-all