Monitoring memory usage in Amazon Lightsail instance

Are you able to complete the step 2 to SSH into the Lightsail instance? If so, you can run the commends for step 3, 4 and the rest of the steps. You can type the commands on the terminal.

Otherwise, here are the documentations for connecting to your Lightsail instance through SSH.

• Connect to your Linux or Unix instance using SSH in terminal
• Key pairs and connecting to instances in Amazon Lightsail