How do you add swap to an EC2 instance?

Question

I'm currently running an ec2 micro instance and i've been finding that the instance occasionally runs out of memory.

Other than using a larger instance size, what else can be done?    

Answer 1

You can use Paging to add a supplement virtual memory on your server. This supplement memory doesn't reside on the physical memory assigned to the machine, it's a space made on a hard disk and saved for using as extra memory by your machine or server.

You can add this extra memory to your instance using the following commands:

sudo /bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024

sudo /sbin/mkswap /var/swap.1

sudo chmod 600 /var/swap.1

sudo /sbin/swapon /var/swap.1