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Swap space in AWS EC2 instances

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How To Implement Swap Space?

1. First, launch a Linux EC2 instance. Once the EC2 instance is launched
2. Use MobaXterm to connect to the instance
3. Use the dd command to create the swap file

sudo dd if=/dev/zero of=/swapfile bs=128M count=32



Here the memory of the swap space is 128M X 32 = 4096M (or 4 GB).


4. Update the read and write permission of the swap file using the following command

sudo chmod 600 /swapfile




5. Set up the Linux swap area

sudo mkswap /swapfile




6. Make the swap file available

sudo swapon /swapfile




7. Start the swap file at boot time by editing the /etc/fstab file

sudo vi /etc/fstab




8. Add the following new line at the end of the file, save the file, and then exit

/swapfile swap swap defaults 0 0

How To Check If A Swap Space Is Implemented Successfully?

free -m

sudo swapon -s